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Page 1: Welch Allyn Medical Division - frankshospitalworkshop.comfrankshospitalworkshop.com/.../WelchAllyn_Atlas... · Atlas Operator’s Manual, contact: Customer Service Welch Allyn, Inc.

Welch Allyn Medical Division

Page 2: Welch Allyn Medical Division - frankshospitalworkshop.comfrankshospitalworkshop.com/.../WelchAllyn_Atlas... · Atlas Operator’s Manual, contact: Customer Service Welch Allyn, Inc.

WELCH ALLYN ATLAS PATIENT MONITOR iSERVICE MANUAL 6200-43E REV. A

Drawings and/or illustrations and/or part numbers contained in this documentare for reference purposes only. For current revisions call the Welch AllynCustomer Service phone number listed in Section 1 page 2.

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ii WELCH ALLYN ATLAS PATIENT MONITOR SERVICE MANUAL 6200-43E REV. A

Contents PAGE

Section 1: General Information1.1 About the Atlas ............................................................................................................ 11.2 Technical Help Information, Worldwide Tech Support Phone Number ........................... 21.3 Product Model Number Structure ................................................................................. 31.4 Main Menu Architecture ................................................................................................ 61.5 Atlas System Block Diagram ........................................................................................ 7

Section 2: Service (See User Manual 6200-42E for Atlas Specifications)2.1 Incoming Inspection,Checklist ...................................................................................... 12.2 Repair Tests ............................................................................................................. 2-4 Table 2-1 :Tools Required for Service, Calibration and Software Loading ................... 5 Table 2-2:Software/Firmware Revision Levels ............................................................ 62.3 Calibration Procedures

BP Calibration - Section 2.3.1 ........................................................................... 7ETCO2 Calibration (623Models only) - Section 2.3.2 ......................................... 7&8CO2 Reset (623Models only) - Section 2.3.3 ........................................................ 9Printer Calibration - Section 2.3.4 ....................................................................... 10Battery Voltage Calibration (Models 622xx and 623xx only)- Section 2.3.5 .... 10&11Temperature Measurement Subsystem Calibration- Section 2.3.6 ...................... 12Set Battery Charge Voltage-Section 2.3.7 .......................................................... 13

2.4 SoftwareSoftware Chart#2.4.1.......................................................................................... 14Downloading Operating System 2.4 .................................................................... 15

2.5 Downloading NVRAM Text files ............................................................................ 15&162.6 Downloading Software and NVRAM Text files ............................................................. 162.7 Product Numbering Structure .................................................................................... 17

Section 3: Troubleshooting (Also see Atlas Operator’s manual Appendix E)3.1 Functional Tests/ Initial Diagnostic Steps ...................................................................... 13.2 Technical Troubleshooting Tables: Complaint/Cause/Corrective Action ....................... 123.3 Top Level Troubleshooting Index .................................................................................. 153.4 Diagnostic Tests and Test Setups ............................................................................... 17

Section 4: Disassembly and RepairAbout Section 4 .................................................................................................................... 14.1 Model 200 Dissassembly .............................................................................................. 24.2 Model 200 Re-assembly .............................................................................................. 134.3 Other Models notes ..................................................................................................... 15

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WELCH ALLYN ATLAS PATIENT MONITOR iiiSERVICE MANUAL 6200-43E REV. A

Appendix Section:A ............................................................................................................... theory of operationsB ...................................................................................................................... repair parts listC.................................................................................... interconnect diagram 620396 Rev AD...................................................................... electrical schematics and circuit board layoutsE ...........................Safety Tests: Required Equipment and Procedures and Test Results Form

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Section 1 - General Information

SERVICE MANUAL 6200-43E REV. A WELCH ALLYN ATLAS PATIENT MONITOR 1

1.1 About the Atlas MonitorThe Atlas combines in one unit all the necessary mea-surements for patients under anesthesia, for surgicalrecovery, or bed side monitoring. See Section 1.3 for acomplete listing of product models and options.

According to the standards of care for Nurse Anesthe-tists and Anesthesiologists, all patients receiving con-scious sedation are to be continuously monitoredthroughout the procedure and recovery phase by ECG,SpO

2, and NIBP. CO

2 monitoring is a requirement dur-

ing gas anesthesia (when patient is ventilated).

The Atlas combines a CRT to display ECG and CO2

waveforms and LEDs for the other numeric values tomaximize visibility and viewing angle. Although notdesigned to be a transport product, the monitor has anintegral handle and it is small and light enough at 13 lbto be easily moved. A one hour battery enables themonitor to be moved with the patient from the surgeryroom to recovery room. It also maintains unit operationfor up to an hour when power is interrupted.

IMPORTANT: for a complete description on the func-tion and use of the Atlas, as well as user safety warn-ings, cautions, and warranty information, read andunderstand the Atlas Operator’s Manual part number6200-42E (English). Other languages are available.

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Section 1 - General Information

SERVICE MANUAL 6200-43E REV . A2 WELCH ALLYN ATLAS PATIENT MONITOR

1.2Help Information

All service and repairs must be performed by fully trainedand properly equipped personnel, using genuinereplacement parts and correct procedures. Failure to doso will invalidate the product warranty.

Read and understand all safety warnings andservice notes printed in this Service Manual and theOperator’s Manual part number 6200-42E. If indoubt about any precaution or procedure, forphone help, or to order additional copies of theAtlas Operator’s Manual, contact:

Customer ServiceWelch Allyn, Inc.4341 State Street Road, PO Box 220Skaneatles Falls, NY 13153-0220 U.S.ATelephone 1-800-535-6663

When calling, refer to the model number on thebottom of the Atlas. The Model Number is the first threedigits of the Serial number number found on the bottomof the Atlas.

Treat all returned opened Nasal CO2 Sample Linesand watertraps as Bio Hazard material and disposeof them in an approved manner.

Troubleshooting assistance is contained in Section 3 ofthis manual to help determine which board ismalfunctioning. This manual does not support repairingthe printed circuit boards.

Year 2000 Information: The Atlas is Y2K compliant andwill not encounter “Year 2000” problems.

Safety Warnings

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Section 1 - General Information

SERVICE MANUAL 6200-43E REV A WELCH ALLYN ATLAS PATIENT MONITOR 3

1.3 Product Model Number Structure

621S0 ECG, Nonin SpO2, NIBP

621SP ECG, Nonin SpO2, NIBP, Printer

622S0 ECG, Nonin SpO2, NIBP, Temp, Respiration, Battery, RS232

622SP ECG, Nonin SpO2 , NIBP, Temp, Respiration, Battery, RS232, Printer

622N0 ECG, Nellcor SpO2, NIBP, Temp, Respiration, Battery, RS232

622NP ECG, Nellcor SpO2, NIBP, Temp, Respiration, Battery, RS232, Printer

623SP ECG, Nonin SpO2, NIBP, ETCO2, Temp, Respiration, Battery, RS232, Printer

623NP ECG, Nellcor SpO2, NIBP, ETCO

2, Temp, Respiration, Battery, RS232, Printer

SUFFIX:

Use letter designation for language localization as follows:E = English, F= French, G= German, I= Italian, S= Spanish, P= Portuguese C = Chinese,J= Japanese

Use number designation for line cord localization as follows:

1 = US, Canada, Japan Version2 = European Version4 = United Kingdom Version6 = Australian Version

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Section 1 - General Information

4 WELCH ALLYN ATLAS PATIENT MONITOR SERVICE MANUAL 6200-43E REV A

1.4 Main Menu Architecture

Also note that this is for the 623xx system.• On a 622xP system, delete the CO2 Reset box , the Calibrate CO 2 item, and the CO2

units item.• On a 621xP system, delete the CO2 Reset box , the Calibrate CO 2 item , the CO2

units item, Respiration speed item, the Temperature units item, and the Batterytest item.

• On systems without printers (621x0 and 622x0) delete the Printer test pattern item.

*

* The Display A/D Channels also lets you press <SET> up and down to display additionalsets of information, but does not change the menu page that you are on, just writesdifferent information on the right side of the screen.

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Section 1 - General Information

SERVICE MANUAL 6200-43E REV A WELCH ALLYN ATLAS PATIENT MONITOR 5

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Section 2 - Service

SERVICE MANUAL 6200-43E REV. A WELCH ALLYN ATLAS MONITOR 1

2.1 Incoming Inspection

o 2.1.1 Inspect shipping package and productfor damage. Make a record of possibleshipping damage.

2.1.2 List accessories in box.o power cordo SpO2 probeo ECG leadso ECG lead cableo Cuff(s)o Operator Manualo nasal C02 Lineo ECG Electrode(s)o temperature probeo BP tubingo papero loose parts, describe

o 2.1.3 Clean and disinfect by following theinstructions printed in the OperatorManual.

o 2.1.4 Operate the Atlas to verify the customercomplaint before making any changes tothe unit. Call the customer if the complaintis unclear.

NOTE: Perform REPAIR TESTS inSection 2.2 to fully inspect theAtlas monitor before and afterservicing. Refer to Section 3for Troubleshooting help.

2.1.5 If the unit has caused or is suspected ofhaving caused an injury of any type:

DO NOT DISASSEMBLE OR REPAIRTHE UN IT IN ANY WAY.Contact Welch Allyn Customer Serviceimmediately.

Service Intervals forCalibration and Main-tenance are listed inAtlas Operator ’sManual Appendix C.

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Section 2 - Service

2 WELCH ALLYN ATLAS MONITOR SERVICE MANUAL 6200-43E REV. A

2.2 Repair Tests 2.2.1 Blood Pressure System Leakage Test:Unit must not leak more than 5 mmHg in a 15second interval while attached to a 100 ccvolume at test pressures of 50mmHg and250mmHg.

Need:100cc (+10/-0cc) test cavitystopwatchsqueeze bulb

2.2.1.1 Connect Atlas to test 100cc volume andSetra Gage as shown in Figure 2.3.1.1

2.2.1.2 Turn Atlas ON2.2.1.3 Press Time and Date button to access

Options Menu.2.2.1.4Press Lead Select button to select

Service Mode. Select Verify Manometer2.2.1.5Pressurize the Atlas with squeeze bulb

to 50mmHg.NOTE: Allow reading to stabilize for 15 seconds.

2.2.1.6Observe pressure for 15 additionalseconds. Unit should not leak more than5mmHg during this time.

2.2.1.7Perform this process at 250mmHg

2.2.2 Dump Test:Unit must be able to deflate a 500 cc volumefrom greater than 260.0 mmHg to less than15.0 mmHg in 10 seconds or less.

2.2.3 Manometer Accuracy TestInternal temperature of the unit must be lessthan 32.0 degrees Celsius before performingtest.

2.2.3.1 The primary transducer must be within +/-0.75 mmHg at 0 +/-0.3 mmHg. The safetytransducer must be within +/-1 mmHg at0+/-0.3 mmHg.

2.2.3.2 The primary transducer must be within +/-1.5 mmHg at 50 +/-5.0 mmHg. The safetytransducer must be within +/-1.5 mmHg at50 +/- 5.0 mmHg.

2.2.3.3 The primary transducer must be within +/-1.5 mmHg at 150 +/-5.0 mmHg. Thesafety transducer must be within +/-4.5mmHg at 150 +/- 5.0 mmHg.

2.2.3.4 The primary transducer must be within +/-

Manometer Accuracy Test

BP Dump Test

BP Leak Test

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Section 2 - Service

SERVICE MANUAL 6200-43E REV. A WELCH ALLYN ATLAS MONITOR 3

2.2.4 Deflation Test:With the unit connected to a large adult cuffand a target inflation pressure of 200 mmHg*have the unit perform a complete “normal”BP cycle.For steps two and three, the size of the stepmust be between 3.0 mmHg and 11.0 mmHg.Step 4 and all other steps above or equal to40 mmHg, step size must be between 7.0mmHg and 11.0 mmHg. All steps below 40mmHg, except for the last step, will bebetween 4.5 mmHg and 10 mmHg. The laststep will be between 0.01 mmHg and 10mmHg.

2.2.5 Charge Voltage Test:Check battery charging circuit:Specification :No Load: 6.85VDC acrossright pin (+) and left pin (-) of Main PCBbattery charge connector.

2.2.6 Hardware Fail Safe Tests2.2.6.1 Over Pressure Test:

Atlas hardware must detect overpressure on unit pneumatic systembetween 296.0 mmHg and 329.0 mmHg.

2.2.6.2 Over 15 mmHg Test:Atlas hardware must detect if thepneumatic system has been pressurizedgreater than 15 mmHg for more than 155seconds but less than 180 seconds.

2.2.6.3 Under 15 mmHg Test:Atlas hardware must detect if thepneumatic system has been pressurizedless than 15 mmHg for more than 25.0seconds but less than 35.0 secondsbefore alowing new inflation cycle in “non-Stat” Auto Mode.

2.2.7 RS232 Test:The RS232 communication operationwill be confirmed with successfulserial transmit and receive.

2.2.8 Printer Option Test:The printer must be able to print out the testpattern . Inspect print quality.

RS232 Test

Printer Option Test

Deflation Test

Charge Voltage Test

Hardware Fail Safe Tests

* Go to service modescreen and set initial

pressure to 200mmHg.

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Section 2 - Service

4 WELCH ALLYN ATLAS MONITOR SERVICE MANUAL 6200-43E REV. A

ECG Test

SpO2 Test

2.2.9 ECG Test:Use a calibrated simulator to checkperformance.NOTE: There is no calibration for the ECG orimpedance Respiration subsystems.If the performance does not match up to thatexpected using a calibrated simulator thenthere could be a problem with the cable, leads,connectors, wiring or the main board itself. Ifthe main board is faulty then replace it.

2.2.10SpO2 Tests:Need:

Appropriate Phantom finger setSpO2 cuff and cableOr:Nellcor or Nonin (as fitted) simulator(replaces cuff to drive subsystem)Or:Calibrated SpO2 simulator that has a cufffitting that simulates a perfused finger

Nonin : Settings for NoninPatient Simulator8000S are 98% O2 / 80 BPM. SpO2 boardaccuracy after 25 second stabilization periodmust be within +/-2%O2 and +/- 2BPM.Nellcor: Settings for Nellcor Patient SimulatorSRC-2 are 81% O2 and 112 BPM. SpO2 boardaccuracy after 25 second stabilization periodmust be within +/-2% O2 and +/- 2 BPM.

2.2.11 TEMP ACCURACY VERIFICATIONNeed:Calibrated thermometer (DIGITAL OR GLASS)small insulated container with cover for warm water2.2.11.1Fill container wtih approximately 96 degree

F water2.2.11.2Attach temperature probe neaqr the sensing

part of the thermometer and insert into thewarm water.

2.2.11.3Accuracy must be within +/- 0.2 degrees F.

Temperature Test

NOTE:There is nocalibration for the SpO2 andPulse subsystem. If theperformance does notmatch up to that expectedusing a calibrated simulator,or the Phantom finger set,then the subsystem boardmust be replaced.

NOTE:Section 3 of this ServiceManual containstroubleshooting steps forthe ECG subsystem.These tests will helpdetermine if the mainboard is faulty.

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6 WELCH ALLYN ATLAS MONITOR SERVICE MANUAL 6200-43E REV. A

Section 2 - Service

LEDOM metsySgnitarepO redaoltooB roclleN ninoN noyrP

OS126 99/8/9,0004.10.AA 99/02/6,0000.10.AA 7V

PS126 99/8/9,0004.10.AA 99/02/6,0000.10.AA 7V

OS226 99/8/9,0004.10.AA 99/02/6,0000.10.AA 7V

PS226 99/8/9,0004.10.AA 99/02/6,0000.10.AA 7V

ON226 99/8/9,0004.10.AA 99/02/6,0000.10.AA 79/71/210.0.2.1V

PN226 99/8/9,0004.10.AA 99/02/6,0000.10.AA 79/71/210.0.2.1V

PS326 99/8/9,0004.10.AA 99/02/6,0000.10.AA 7V 00.1VE.0

PN326 99/8/9,0004.10.AA 99/02/6,0000.10.AA 79/71/210.0.2.1V 00.1VE.0

Table 2-2:Software/Firmware revision levels

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Section 2 - Service

SERVICE MANUAL 6200-43E REV. A WELCH ALLYN ATLAS MONITOR 7

2.3.1 BP Calibration :Need: 500cc vessel (approximate)

calibrated digital manometersqueeze bulb with one-way valvetubing and T fittingsPC with HyperTerminal *serial cable

2.3.1.1 Connect: manometer, bulb, and 500cc vesselto BP port with “T” connectors, Atlas to PCwith serial cable.

2.3.1.2 Turn AtlasON and start HyperTerminal on PC.2.3.1.3 Enter commands on Serial interface:

Pangea> bp valve close<ENTER>Pangea> bp safety off<ENTER>

2.3.1.4 Enter command:Pangea> bp cal 5000

Do not press <ENTER> yet!2.3.1.5 Raise pressure with bulb to as close to

50.00mmHg as possible or slightly higher. Letthe pressure bleed down toexactly50.00mmHg. Now press <ENTER> . Take nomore than 3 minutes for this step.

2.3.1.6 Enter command:Pangea> bp cal 25000<ENTER>

2.3.1.7 Repeat step 2.3.1.5 with 250.00 as target.Press <ENTER> when pressure deteriorates to

250.00 mmHG.2.3.1.8 Enter command:

Pangea> nvram write<ENTER>2.3.1.9 Disconnect serial cable and instruments and

cycle power on Atlas. BP cal complete.2.3.1.10 Verify accuracy of pressure settings

by repeating step 2.3.1.3 then 2.3.1.5 andcompare Atlas front panel reading with Setrareadout. Do this at 50.00mm and 250 mm Hg.

2.3.2 ET CO2 Calibration: 623 Models onlyNeed: Tank of approximately 10% CO2, balance N2

(certified) Blood Gas MixtureTubing and T connectorsWatertrap and scrubber

2.3.2.1 Insert water trap. Power up.2.3.2.2 Place the instrument into Service Mode: Press

Date/Time Lead Select button.2.3.2.3 Select Calibrate CO2

Message “Remove CO 2 water trap ” willappear.

2.3 Calibration

2.3.1 BP Calibration

Caution: Improper use, stor-age, handling of compressedgas vessels can cause injuryor death! Follow gas manu-facturers safety processes.

Setra

500cc volume

Figure 2.3.1.1

2.3.2 ET CO2 Calibration

*Access and set upHyperTerminal:1-Start2-Settings3-Control Panel4-Add/Remove Programs5-Windows Setup6-Communications7-selectHyperTerminal8-APPLYSettings are:9600 Baud, 8 bit word, 1 stop bitno parity, no flow controlANSI character setFind HyperTerminal in Programs,Accessories

NOTE: The Scrubber lookssimilar to a watertrap, butis filled with white granules.It is included with model623XX.

NOTE:Replace water trapevery 6 hrs of use. Treatwater trap and usedNasalCO2 Sample linesas bio hazard material!

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Section 2 - Service

8 WELCH ALLYN ATLAS MONITOR SERVICE MANUAL 6200-43E REV. A

2.3.2.4 Remove water trap from water trap socket .2.3.2.5 Message “Install scrubber ” will appear .2.3.2.6 Attach scrubber to water trap.2.3.2.7 Insert scrubber/water trap assembly into water

trap socket.Message “Enter span gas value using<Set> button ” will appear.

2.3.2.8 Change the default value (10%) to the value ofspan gas being used (calibrated 8% to 12%concentration known to ±0.01%).

2.3.2.9 Press <BP Start/Cancel>Message: “Sampling ” appears while theinstrument is sampling the scrubber air.

2.3.2.10 When instructed, remove the scrubber fromthe CO2 water trap. Do not remove water trap.

2.3.2.11 Attach the calibrated source of CO2 gasto the CO2 side-stream sampling tube as perFigure 2.3.2.11

2.3.2.12 Adjust the CO2 regulator just enough toallow a small amount of gas to flow out of thevent (approximately 3 PSI).

Important: Once positive flow isestablished, let the it flow for one minutebefore pressing the Continue button andactually sampling.After one minute, press the Continuebutton to let the Atlas start sampling CO 2. .

2.3.2.13 Press <BP Start/Cancel>Message: “CO2 calibration successful ” or“CO2 calibration failed ” will appear onthe CRT display.

(Note: Serial Communication is not the cause of a failureif the Prion Serial appears in the Service Screen.Therefore the problem is with the board or connectionsand not serial communication problems.)

2.3.2.14 Press Trend button to Exit.

To calibrate the CO2 system in years 2022 or later it isnecessary to reset the system clock to an earlier year,perform the calibration, and then set the clock to thecorrect year again. The service center should keep arecord of this since the Cal display in the Service Modescreen will be incorrect.

CO

2

watertrap

vent

Figure 2.3.2.11

Note : Adjust regulator toapproximately 2 PSI.

valve

NOTE:Replace water trapevery 6 hrs of use. Treatwater trap and usedNasalCO2 Sample linesas bio hazard material!

SR856: CO2 Calibrationbeyond the year 2021

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Section 2 - Service

SERVICE MANUAL 6200-43E REV. A WELCH ALLYN ATLAS MONITOR 9

NOTE: There may be amessage indicating a 5minute Warming Up period.

2.3.3 CO2 RESETNeed: Watertrap and Scrubber

2.3.3.1 Press the Date/Time button on the lowerright of the monitor. The Set Date and Timeand Other Options menu will be displayed.

2.3.3.2 Select the Reset CO2 selection by pressingthe CO2/RESP ALARMS Off button.CO2 Reset screen will appear.

2.3.3.3 Follow the instructions on the screen.“Remove the CO2 watertrap”.“Install the CO2 Scrubber onto the CO2

watertrap.”

NOTE: The Scrubber looks similar to a watertrap,but is filled with white granules. It is includedwith model 623XX.

2.3.3.4 Remove the tubing from the watertrap andattach the Scrubber to the watertrap.

2.3.3.5 Insert the watertrap/Scrubber combinationinto the watertrap socket.

2.3.3.6 Messages: The system will report that it isSampling. The system will then report ResetComplete.

2.3.3.7 Remove the watertrap/Scrubber from thewatertrap socket.

2.3.3.8 Detach the Scrubber from the watertrap andreattach the tubing.

2.3.3.9 Replace the watertrap in the watertrap socket.2.3.3.10 Press Trend to return to the waveform

screen.

2.3.3 CO2 RESET

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Section 2 - Service

10 WELCH ALLYN ATLAS MONITOR SERVICE MANUAL 6200-43E REV. A

2.3.4 PRINTER CALIBRATIONNeed:PC with HyperTerminalSerial cableConnector

2.3.4.1 Use HyperTerminal to get strobe widthsettings for printer normal for waveforms -text for trend

Advanced configuration printing:Pangea> nvram get

printer_strobe_width_normal<ENT>(normal value 130)

Pangea> nvram get printer_strobe_width_text <ENT>(normal value 70)

2.3.4.2 Change values - larger number for darkerprinting. Change with:

Pangea> nvram set printer_strobe_width_normal XXXPangea> nvram set printer_strobe_width_text YYY

2.3.4.3 Test and reset until satisfied.2.3.4.4 Press Trend button to exit the Service Mode.

2.3.5 BATTERY VOLTAGE CALIBRATION for models622XX and 623XX.

NOTE: CHECK BATTERY VOLTAGE CALIBRATIONAFTER REPLACING MAIN PCB.Need:DC power supply rated: 7 VDC at 5ABattery eliminator cable - Atlas battery plug on oneend, interface to the power supply on the other.There should be access for voltmeter probes atthe Atlas end of the cable when it is installedDMM / DVM with 10mV resolution on a 10V scalePC with HyperTerminalSerial cable and connector

2.3.5.1. Connect serial cable to PC and Atlas2.3.5.2 Remove battery from Atlas2.3.5.3 Set the power supply to 6.8V +/- 200mV2.3.5.4 Connect the power supply to the Atlas battery

connector.2.3.5.5 Turn Atlas ON.2.3.5.6 Reduce the power supply to 6.0V

2.3.5 BATTERY VOLTAGECALIBRATION

2.3.4PRINTER CALIBRATION

Note: Two lines are displayed:Waveform +128, Text +70These two numbers are factorydefaults and a good starting pointif the system is printing verypoorly or not at all.The LEFT<SET> button controlsthe Waveform setting, up anddown. The RIGHT <SET> but-ton controls the Text setting, upand down. Make changes tothesettings as needed, where alarger number = darker printingand a smaller number = lighterprinting. Make initial changes ofabout 10 points each time. Aftermaking an adjustment, press<TREND> to exit the ServiceMode.

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Section 2 - Service

SERVICE MANUAL 6200-43E REV. A WELCH ALLYN ATLAS MONITOR 11

2.3.5.7 Measure the voltage at the battery connector(at the Atlas) to the nearest 10mV.

NOTE: Do not measure at the power supply, sincecable resistance will introduce error.

2.3.5.8 At the HyperTerminal, type:Pangea> power cal XXXX<ENTER>

(where XXXX represents the measured voltage inmillivolts no decimal point.) For example, if youmeasured 6.010V at the battery connector, use thecommand “power cal 6010<ENTER>”.

2.3.5.8 The Atlas will respond:raw = ZZZZ mV true = 6010 mV OK

(where ZZZZ is the raw uncalibrated reading that theinstrument made.)

2.3.5.9 Reduce the power supply to 5.6 volts. Youshould soon hear the “low battery” alarm.

2.3.5.10Measure the voltage at the battery connectorto the nearest 10mV.

2.3.5.11 At the HyperTerminal, type:Pangea> power cal XXXX<ENTER>

(where XXXX represents the measured voltage inmillivolts no decimal point.) For example, if youmeasured 5.590V at the battery connector, use thecommand “power cal 5590<ENTER>”.

2.3.5.12The Atlas will respond:raw = ZZZZ mV true = 5590 mV OK

(where ZZZZ is the raw uncalibrated reading that theinstrument made.)

2.3.5.13 Finish by typing: (this will re-boot ATLAS)Pangea> hw reset<ENTER>

2.3.5.14 Turn Atlas OFF and remove the powersupply.

2.3.5.15 Re-Install the battery.

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Section 2 - Service

12 WELCH ALLYN ATLAS MONITOR SERVICE MANUAL 6200-43E REV. A

2.3.6 TEMPERATURE MEASUREMENTSUBSYSTEM CALIBRATION:

Need:PCSerial CableHyperTerminal 1kOhm - 2kOhm 1% 1/2watt resistorLarge RCA plug (1/4”) 2 conductorShort length of wire (optional)Soldering iron and solder

2.3.6.1Prepare Resistor/Plug assembly.Solder the resistor across RCA plugterminals.

2.3.6.2 Plug the resistor assembly into the AtlasTemperature jack.

2.3.6.3 Connect the Atlas to the PC serial port.2.3.6.4 Turn the Atlas ON.

NOTE: Temperature display will show a validtemperature.

2.3.6.5 Start HyperTerminal on the PC.2.3.6.6 At the Pangea prompt, type:

Pangea>temp cal xxxxxx<ENTER>

(where the xxxxxx is the value of the precision resistorin centiOhms- Specify the Ohms, tenths, andhundredths of Ohms with no decimal point- forexample, a 1200.00 Ohm resistor would be:Pangea>temp cal 120000<ENTER>

2.3.6.7 Wait four seconds then type:Pangea>temp state<ENTER>

2.3.6.8 Displayed resistance will be within 0.5Ohms of the value that you entered.The Offset should not exceed 5.0 Ohms.

NOTE: The system will silently fail (without error) if itis unable to calibrate properly. Therefore youmust manually verify that this resistance iscorrect.

2.3.6.9 Turn the Atlas OFF.2.3.6.10Unplug the resistor/plug assembly.2.3.6.11Remove the serial cable.2.3.6.12Check the accuracy of the

temperature sensing system using theprocess described in Section 2.2.11

2.3.6 TEMPERATUREMEASUREMENT

SUBSYSTEMCALIBRATION

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Section 2 - Service

SERVICE MANUAL 6200-43E REV. A WELCH ALLYN ATLAS MONITOR 13

2.3.7 Set battery charging voltage:Specification :No Load: 6.85VDCNeed: DVMM2.3.7.1Remove battery from unit and unplug.2.3.7.2Use DVMM to check across right pin (+)

and left pin (-) when viewed looking intothe battery compartment.

2.3.7.3Adjust potentiometer R338 to obtain6.85VDC. (It is located at the right of thebattery jack.Turn it counterclockwise to increase thecharging voltage.

2.3.7 Set Battery ChargeVoltage

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Section 2 - Service

SERVICE MANUAL 6200-43E REV. A WELCH ALLYN ATLAS MONITOR 15

2.4 Downloading Operat-ing System

(when upgrading software orreplacing CPU board)

2.5 Downloading NVRAMText files

after replacing Main Board

*Configure HyperTerminal9600 Baud8 bits1 stop bitno parityno flow control

2.4 Downloading Operating SystemWhen required: to load latest revision software*

on a fully functioning Atlas or to reload softwareafter replacing the MCU board. Theatlas_dl.exe program loads the following files:

atlas.out.gznvram_common.txtnvram_(model#).txt **nvram_(language).txt **

Equipment or supplies required:PC with Windows ‘95/NTSerial cable with connector: (COM1to PC)File : atlas_dl.exe

2.4.1 Connect serial cable between Atlas andPC COM1

2.4.2 Double click “atlas_dl.exe” explorer window2.4.3 After downloading is complete, check alarm

and other User controlled advancedconfiguration settings since these are ‘reset’ bythis downloading process.

Downloading Operating System complete

2.5 Downloading NVRAM files with Hyperterminal*.The NVRAM resides on Main Board. Hyperterminal loads the following files:

cal_init.txtcommon.txt(model#).txt **(language).txt,**printer.txt (if required),or no_printer.txt.

2.5.1Connect serial cable between Atlas andPC COM1 as in 2.4 above.

2.5.2Open HyperTerminal program on PC:STARTPROGRAMSACCESSORIESHYPERTERMINAL

2.5.3Turn Atlas ON. You should see someversion information and a prompt:

Pangea>2.5.4 Transfer Text files:

(TRANSFER/SEND TEXT FILE)NVRAM_CAL_INIT.TXT (only if main board has beenreplaced)

Note: If Atlas calibrationwas satisfactory prior todownloading softwarethen recalibration is notrequired.

**Note: Hyperterminalqueries the Atlas to deter-mine which model numberand language to down-load.

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Section 2 - Service

16 WELCH ALLYN ATLAS MONITOR SERVICE MANUAL 6200-43E REV. A

2.6 Downloading Soft-ware &

NVRAM Text filesafter replacing Main Board

AND CPU board

2.5 Downloading NVRAMText files

when replacing Main Boardcontinued

NVRAM_COMMON.TXTNVRAM_NO_PRINTER.TXT

orNVRAM_PRINTER.TXTNVRAM_(model 200,210,220).TXTNVRAM_<LANGUAGE>.TXT

2.5.5 After these text files are transferred,Type the following serial commands to updatethe serial number:

nvram set serial___ (last 3 digits of serial#)nvram writehw reset (hardware reset restarts Atlas and

saves the new settings)2.5.6 Verify the serial number correct2.5.7 Recalibrate Atlas unit. After calibration is

complete.2.5.8 Check alarm settings and User selected

advanced Configurations

2.6 Downloading Software & NVRAM Text files2.6.1 Use atlas_dl.exe as in step 2.4. to Program

new CPU board.2.6.2 Use HyperTerminal as in step 2.5 to set

NVRAM on new Main Board.2.6.3 Recalibrate Atlas2.6.4 Check alarm settings and User selected

advanced Configurations

NOTE: Firmware DownloadSoftware versions of OEM boards are not fieldupgradeable. (SpO

2 boards or the CO

2 board.)

Replace the subsystem board with a higher(current) version if necessary.

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WELCH ALLYN ATLAS MONITOR 17SERVICE MANUAL 6200-43E REV. A

Section 2 - Service

2.7 Product Model Number Structure

621S0* ECG, Nonin SpO2, NIBP

621SP* ECG, Nonin SpO2, NIBP, Printer

622S0** ECG, Nonin SpO2, NIBP, Temp, Respiration, Battery, RS232, Nurse Call

622SP** ECG, Nonin SpO2, NIBP, Temp, Respiration, Battery, RS232, Printer, Nurse Call

622N0** ECG, Nellcor SpO2, NIBP, Temp, Respiration, Battery, RS232, Nurse Call

622NP** ECG, Nellcor SpO2, NIBP, Temp, Respiration, Battery, RS232, Printer, Nurse Call

623SP** ECG, Nonin SpO2, NIBP, ETCO

2, Temp, Respiration, Battery, RS232, Printer, Nurse Call

623NP** ECG, Nellcor SpO2, NIBP, ETCO

2, Temp, Respiration, Battery, RS232, Printer, Nurse Call

SUFFIX:

Use letter designation for language localization as follows:

E = English, F= French, G= German, I= Italian, S= Spanish, P= Portuguese C = Chinese, J= Japanese

Use number designation for line cord localization as follows:

1 = US, Canada, Japan Version

2 = European Version

4 = United Kingdom Version

6 = Australian Version

Specifications: See Operator ManualSpecifications for all of the above listed models of Atlas including performance, accuracy,range, size, weight, power, environmental, are documented in an appendix to the UserManual.

* Model 200 Main Board and Schematic 200** Model 220 Main Board and Schematic 220

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Section 3 - Troubleshooting

SERVICE MANUAL 6200-43E REV. A WELCH ALLYN ATLAS MONITOR 1

1. Review customer complaint and determine if it issafe to plug in and turn on Atlas

2. Plug in Atlas, no sensors attached.3. Check for AC~ LED lit.4. Install paper in printer if fitted.

5. Turn on power6. Green light in power button.7. Loud beep when button pressed.8. Three dashes in SYSTOLIC.9. Three dashes in DIASTOLIC.10.Two dashes in SpO

2 (takes several seconds after BP

dashes come on).11. Three dashes in PULSE (takes several seconds after

BP dashes come on).12.Pleth: none, or a single bar at the bottom, or two bars at

the bottom.13.No lights in TEMP.14.No lights in ALARMS OFF buttons.15.X lit on AUTO.16.AC~ lit17.CRT display comes on slowly if cold, quickly if still warm

from last use.18.May see version string in center if comes on quickly, not

a problem if not seen because it comes on slowly.19.CRT: three dashes for Heart Rate20.Heart picture21.Lead select symbol22.Scale bar23.One or two lines of dashes for waveforms – depends

upon settings.24.Three dashes for MAP – or blank, depends upon

settings.25.Error message(s) at bottom of screen?

26. If 622 or 623, pull AC cable. Should be no changeexcept AC~ unlit.26.1. If errors of low, very low or depleted battery,

or if system dies, plug back in and repeattest in 2 hours.

3.1 Functional Test and Initial Diagnostic

Note: “Idle” screen is normalwaveform display.

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Section 3 - Troubleshooting

2 WELCH ALLYN ATLAS MONITOR SERVICE MANUAL 6200-43E REV. A

Plug AC back in.

27.Press <DATE/TIME><TREND>28.Get Advanced Configuration menu.29.Write down all settings for resetting to customer prefer-

ence later.30.Set language to your native tongue if necessary to

allow you to write down the other settings . The topitem is always the language, press either <SET> buttonto step through list.

31.Press <PRINT> if printer fitted.32.Press <TREND> to return to idle screen.

33.Press <DATE/TIME>34.Get date/time menu.35.Verify date/time, set if necessary.

35.1. Bad date may indicate battery problem. Ifdate was bad, turn off unit, pull power cable,wait 5 minutes reconnect power cable, turnon unit. Check date again.

35.1.1. If date comes back bad: Replacemain board Model 200. Model 210,220, if battery not dead replace mainboard.

Press Date/Time to return to waveform screen if needed.

36.Press <DATE/TIME><LEAD SELECT>37.Get Service Mode menu.38.Examine version/configuration data in lower half of

menu, and write it all down.39.Press <SELECT> to highlight Reset to factory de-

faults.40.Press <BP START/CANCEL> to reset configuration.41.Press <TREND> to return to idle screen.42.Press <DATE/TIME><TREND>43.Get Advanced Configuration menu.44.Set language to your native tongue if necessary

44.1. We have just reset to factory defaults .Compare settings to factory defaults appropri-ate for the country – in Operator manual. If notmatching, indicates memory problems.Changing only the language should not changeany of the other factory default settings.

45.Press <DATE/TIME><LEAD SELECT>

MENU TESTS

3.1 Functional Test and Initial Diagnostic

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Section 3 - Troubleshooting

SERVICE MANUAL 6200-43E REV. A WELCH ALLYN ATLAS MONITOR 3

46.Get Service Mode menu.47.Press <Select> to highlight CRT test pattern.48.Press <BP START/CANCEL> to show test pattern.

Examine display.49.Press any key to end display.

50.Press <Select> to highlight Printer test pattern (iffitted).

51.Press <BP START/CANCEL> to start test pattern.52.Printer should print test pattern.53.Press any key to end display.54.Examine printout.

55.Press <Select> to highlight LED test .56.Press <AUTO> to turn on all LEDs .57.Press <BP START/CANCEL> to show automatic test

pattern.58.Watch for a while, look for glitches in pattern.59.Press <Set> to go to manual mode and step through

individual segments if needed to observe a problem.

60.Press <Select> to highlight Button test.61.Press <BP START/CANCEL> to start test.62.Press every button on system, <BP START/CANCEL>

last.62.1. Verify that buttons match up with their names,

and that all buttons are functional.62.1.1. If names don’t match, indicates

memory corruption: Replace mainboard

63.Press <Select> to highlight Display A/D channels(three or four screens worth)63.1. Write down all values for later review.63.2. Press <Set> and write down all values for

each screen.64.Press <Trend> to return to Idle screen.

65.Connect the BP port to the BP simulator.66.Set the simulator for a normal reading (140/80,

100BPM, NSR).67.Press <BP START/CANCEL>

67.1. System should start pump, display manom-eter value in SYSTOLIC LED; this valueshould track and be very close to pressure

BP test

3.1 Functional Test and Initial Diagnostic

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Section 3 - Troubleshooting

4 WELCH ALLYN ATLAS MONITOR SERVICE MANUAL 6200-43E REV. A

displayed by manometer in BP simulator (iffitted). Largest number shown in SYSTOLICshould be very close to the Initial pressuresetting recorded above from AdvancedConfiguration.

67.2. System should step down pressure, showingstep values in SYSTOLIC LED, and then dis-play correct SYSTOLIC and DIASTOLICvalues. System may show MAP value de-pending upon country.

68.Press <DATE/TIME><TREND> to get to AdvancedConfiguration menu.

69.Press <Select> to highlight Initial pressure.70.Press <Set> to change Initial pressure to 280 mmHg.71.Press <Select> to highlight MAP.72.Press <Set> to change MAP to Yes.73.Press <TREND> to return to idle screen.

74.Press <BP START/CANCEL>75.System should start pump, display manometer value in

SYSTOLIC LED; this value should track and be veryclose to pressure displayed by manometer in BPsimulator (if fitted). Largest number shown in SYS-TOLIC should be very close to the Initial pressuresetting of 280 mmHg.75.1. If pressure shown exceeds 300 mmHg:

Recalibrate BP

76.System should step down pressure, showing stepvalues in SYSTOLIC LED, and then display correctSYSTOLIC and DIASTOLIC values. System shouldshow MAP value. MAP value should match what isshown by simulator.

77.Set simulator to highest Systolic <=250, lowest Dias-tolic >= 30, and lowest heart rate >=30.

78.Press <AUTO>79.X goes unlit, 1 flashes for 10 seconds.80.20 seconds after 1 stops flashing, BP measurement

starts.81.BP reading as above.

81.1. If BP does not start: Replace main board81.2. If BP measurement incorrect recalibrate

3.1 Functional Test and Initial Diagnostic

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Section 3 - Troubleshooting

SERVICE MANUAL 6200-43E REV. A WELCH ALLYN ATLAS MONITOR 5

82.No less than 30 seconds after completing the measure-ment another measurement should start. While it ispumping up, press <BP START/CANCEL>. Measure-ment stops immediately and pressure is dumped (asseen on manometer on simulator).82.1. If measurement does not stop immediately:

Main board or button.82.2. If pressure does not drop below 10mmHg

immediately: Main board

83.Press <AUTO> and X lights up (not flashing).

84.Disconnect the tubing from the BP port on the Atlas.85.Press <BP START/CANCEL> and note the time (to the

second).86.The BP should abort with an alarm after no longer than

one minute.

87.Cycle power on Atlas, connect a 5 lead cable set to thesimulator.

88.Configure the simulator for NSR 100BPM and Imped-ance Respiration.

89.Plug the cable into Atlas.90.Press <DATE/TIME> <TREND> to access Advanced

Configuration menu.91.Press <Select> to highlight ECG lead set and press

<Set> to select 5 wire.92.Set ECG gain to Automatic.93.Set ECG speed to 25mm/s.94.Set ECG bandwidth to Monitor.95.Set Second trace selection to ECG.Press <TREND> to return to idle screenShould see:

95.1. ECG cascading onto second line95.2. Scale bar on left of top line95.3. Heart rate displayed as set on simulator95.4. Lead Selected = II95.5. Pulse tone high pitched

Press <LEAD SELECT> and step through each of the leadsettings.Should see:

95.6. Different looking ECG waveforms95.7. Heart Rate will go to dashes and alarms on

some leads96.Set lead selected to II

ECG

3.1 Functional Test and Initial Diagnostic

Note: Simulator must sup-port impedance respirator.

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Section 3 - Troubleshooting

6 WELCH ALLYN ATLAS MONITOR SERVICE MANUAL 6200-43E REV. A

97.Press <DATE/TIME><TREND> to access AdvancedConfiguration menu.

98.Change Second trace selection to Respiration.99.Press <TREND> to return to idle screen.100. Should see:

100.1. ECG on top line100.2. Scale bar on left of top line100.3. Heart rate displayed as set on simulator100.4. Lead Selected = II100.5. Pulse tone high pitched100.6. Respiration trace on second line100.7. Respiration rate displayed as set on simula-

tor.101. Disconnect ECG simulator

102. Connect SpO2 cable and cuff and install cuff on

simulator (or your finger).103. Set simulator to normal readings.104. See pleth signals immediately.105. See SpO

2 percentage within several seconds .

106. See Pulse display at the same time as SpO2

percentage.

107. Disconnect SpO2 cuff from simulator.

108. See error “SpO2 cuff not detected”.

109. Unplug SpO2 cable from Atlas.

110. See error “SpO2 cable not detected”.

111. Temp display is blank.112. Connect temp probe.113. See temp display of ambient temperature.

114. Disconnect temp probe.115. Temp display becomes dashes. No alarm or error

116. Press <DATE/TIME><TREND>117. Get Advanced Configuration menu.118. Set Second trace selection to CO2.119. Press <TREND> to return to idle screen.120. Insert watertrap with tubing attached.121. Should see:

121.1. Hear pump motor start.121.2. See solid line waveform on lower trace.121.3. See dashes in Respiration Rate.121.4. See dashes in mmHg (or % or kPa, as

configured).

SpO2

Temp

CO2

3.1 Functional Test and Initial Diagnostic

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Section 3 - Troubleshooting

SERVICE MANUAL 6200-43E REV. A WELCH ALLYN ATLAS MONITOR 7

122. Breathe gently and repeatedly over end of tubing123. Should see:

123.1. See waveform within seconds of breathing123.2. See respiration rate non zero within one

minute.123.3. See CO2 concentration non zero within one

minute.

124. System must have been plugged in for 24 hours fora real battery test to guarantee that battery is fullycharged, but for functional test we can try it:

125. Press <DATE/TIME><LEAD SELECT>126. Get Service Mode menu127. Press <SELECT> to highlight Battery test128. The menu reports

Battery Low Time XXX andBattery Dead Time YYY

These are the results from the last battery test. TheBattery Low Time is the time in hours and minutesthat the battery ran in the last test until the LowBattery alarm started, and the Battery Dead Time isthe time from the beginning of the Low Battery Alarmuntil the system turned itself off when the batteryvoltage reached the cutoff level.

129. Write down the Battery Low Time and Battery DeadTime

130. Unplug AC cord to start battery test131. The timers will begin. Leave the system until it

powers down. Plug in AC and turn the system on,enter the Service Mode menu, select Battery Testagain, and write down the new values. Comparethese to the previous values, and to the minimumspecification: Battery Low Time = 1 Hour Battery Dead Time = 10 Minute minimums.

132. Replace the battery if performance falls belowspecification

NOTE: Configuration settings for printing are different fortext pages (Advanced Configuration and Trend displays)and for waveforms.

133. Connect ECG simulator to generate a samplewaveform.

BATTERY

PRINTER

3.1 Functional Test and Initial Diagnostic

Note: 2:08 means 128minutes which is the defaultsetting indicating a batterytest has never been madebefore.

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Section 3 - Troubleshooting

8 WELCH ALLYN ATLAS MONITOR SERVICE MANUAL 6200-43E REV. A

134. Press <PRINT> and look at waveform printout. Lookfor darkness, thickness of lines, legibility of text,blurring, “blooming” of text.

135. Press <DATE/TIME><TREND>136. Get Advanced Configuration menu.137. Press <PRINT> and look at text printout.

137.1. If feeding problems: Mechanical inspectionof printer, replace motor, drive platten.

137.2. If waveforms too light or dark: Calibrate137.3. If text too light or dark in configuration screen,

press <Select> until “Printer test pattern” ishighlighted then press <HR Alarms Off>button, then press <Set> to lighten or darkenprint.

137.4. If incorrect printout, missing elements, missing grid, etc: Troubleshoot further

Software/firmware

138. Review versions written down earlier and compareto latest available, and also make sure that allcomponents are compatible with each other. Seetable 2.6 in this document.

Power-on beep139. Turn off system, and turn on. Should hear loud

Power-on beep.

ECG pulse tone, pulse volume control, saving set-tings, <HR ALARMS Off> button140. Connect ECG simulator.141. Should hear: heart rate beep, at constant high pitch142. Press SpO

2 volume button “-“ 8 times. Should get

quieter and finally silent.

143. Press <DATE/TIME><PRINT> to Save settings .144. Turn system off and back on.145. Pulse tone should be silent even though heart rate is

shown.

146. Press SpO2 volume button “+” 8 times. Should get

audible and then louder.

147. Disconnect ECG cable

ALARMS/SOUNDS

3.1 Functional Test and Initial Diagnostic

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Section 3 - Troubleshooting

SERVICE MANUAL 6200-43E REV. A WELCH ALLYN ATLAS MONITOR 9

148. Should hear Technical alarm and see error message.149. Press <HR ALARMS Off> button.150. Should stop Technical alarm sound, and erase error

message, and light LED in <HR ALARMS OFF>button.

151. Press <HR ALARMS OFF> button again.152. Should hear Technical alarm sound, see error

message, LED unlit in <HR ALARMS Off> button.153. Turn system off and on.

SpO2 pulse tone154. Attach SpO2 cable and cuff, and attach to simulator

or finger.155. Should hear heart rate beep, different tone than

when ECG was connected.156. Change SpO2 setting on simulator, or hyperventilating,

hold breath, should hear tone pitch change up or downtracking simulator setting.

Limit Alarm, alarm volume control, Silence button,Technical Alarm, <SpO 2 ALARMS Off> button157. Press right <Select> button until SpO2 LO is flash-

ing, press right <Set> UP to change SpO2 LOsetting to 99.

158. Wait until SpO2 LO stops flashing.159. Set simulator to SpO2 at 90%.160. Should hear Limit alarm.

161. Press <Alarm Volume> “-“ eight times. Should getquieter but not silent.

162. Press <Alarm Volume> “+“ eight times. Should getlouder.

163. Press <Silence> and start stopwatch. Should bequiet for the time set in Advanced Configurationmenu, then alarm comes back on.

164. Disconnect SpO2 cable from Atlas.165. Should hear technical alarm, see error message

“SpO2 cable not detected”166. Press <SpO2 ALARMS Off> button.167. Should stop Technical alarm sound, and erase error

message, and light LED in <SpO2 ALARMS OFF>button.

168. Press <SpO2 ALARMS OFF> button again169. Should hear Technical alarm sound, see error mes-

sage, LED unlit in <SPO2 ALARMS Off> button.170. Turn system off and back on.

3.1 Functional Test and Initial Diagnostic

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Section 3 - Troubleshooting

10 WELCH ALLYN ATLAS MONITOR SERVICE MANUAL 6200-43E REV. A

<CO2/RESP ALARMS Off> button171. Press <DATE/TIME><TREND>172. Get Advanced Configuration menu173. Set Second trace selection to CO2174. Press <TREND> to return to idle screen175. Insert CO2 watertrap with hose176. Breath into hose until waveform is displayed177. Remove CO2 watertrap178. Should hear Technical alarm and see error mes-

sage. - “CO2 watertrap not detected”179. Press <CO2/RESP ALARMS Off> button.180. Should stop Technical alarm sound, and erase error

message, and light LED in <CO2/RESP ALARMSOFF> button.

181. Press <CO2/RESP ALARMS OFF> button again.182. Should hear Technical alarm sound, see error

message, LED unlit in <CO2/RESP ALARMS Off>button.

183. Turn system off and back on

<BP ALARMS Off> button184. With no hose connected to BP port, press <BP

START/CANCEL> button185. Place finger over BP port, blocking flow, causing BP

to detect overpressure and abort186. Should hear Technical alarm and see error mes-

sage. - “Check blood pressure cuff”*187. Press <BP ALARMS Off> button.188. Should stop Technical alarm sound, and erase error

message, and light LED in <BP ALARMS OFF>button.

189. Press <BP ALARMS OFF> button again.190. Should hear Technical alarm sound, see error

message*, LED unlit in <BP ALARMS Off> button.191. Turn system off and back on.

Battery tone192. Disconnect AC power on running system.193. Connect BP hose to simulator194. Press <AUTO> to select 1 minute intervals195. Wait for battery to run down. With fully charged

battery, after no less than 50 minutes, should hearsingle tone, get message that system will shut downin 10 minutes.

3.1 Functional Test and Initial Diagnostic

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Section 3 - Troubleshooting

SERVICE MANUAL 6200-43E REV. A WELCH ALLYN ATLAS MONITOR 11

SELF DIAGNOSTICERROR MESSAGES

3.1 Functional Test and Initial Diagnostic

196. Should hear tone again in two minutes, and againtwo minutes after that.

197. Five minutes after first message, should start hear-ing tone every minute, and get message that 5minutes remain until shutdown.

198. Ten minutes after first message, should hear techni-cal alarm, see a printout of Trend data if there is anyunprinted trend data accumulated, (which there is,we have been running BP measurements) and errormessage that system shutdown is imminent.

All the possible error messages are documented in anappendix to the Operator’s Manual.

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Complaint Cause Corrective Action

Power

Will not power up in AC No wall powerWrong wall power voltage/frequencyFuse in power supplyFuse in neutral wirePower supply failure

LEDs

Random LSD segments unlit Failed LED LED 1Subsystem LEDs unlit Subsystem problem Check subsystem LED 1LED intermittent, dim, flickering Failed LED Replace Display board

Buttons

Button not functional Failed switch Button 1Failed subsystem Check subsystem

Button sticking under front bezel Possible loose display board Tight display board mounting screws.Button intermittent or difficult to Failed switch Button 1make contact

sounds

No sound at all Failed speaker or disconnectedFailed main boardSoftware corruption

Reload softwaresound 1

Battery

Insufficient life

Printer

Feed problems

Waveform print qualityText print qualityNot functional

Feeding but not printing

Failing battery Battery 1

Paper inserted incorrectlyDoor not latchedFailed printerSoftware adjustment neededSoftware adjustment neededFailed printerPrinter cablePaper inserted backwardsWrong kind of paperFailed printer

Printer 1

Printer 1Printer 1Printer 1

Printer 1

CRT

CRT is blank CRT cables

Failed CRTFailed Deflection boardFailed Main Board

CRT 1Reinstall software

Section 3 -Troubleshooting 3.2 Chief Complaint, Cause and Corrective Action

12 WELCH ALLYN ATLAS MONITOR Service Manual 6200-43E Rev. A

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Section 3 -Troubleshooting 3.2 Chief Complaint, Cause and Corrective Action

ECG

Complaint Cause Corrective Action

ECG waveform not displayed(dashed lines)

Patient electrodes

Lead wiresCableECG cable connectionFailed main board

ECG 1

ECG waveform not properly scaled Possible patient physiology problem Check gain settingReinstall software

ECG gain set to 10mm/mV in ECG 1Advanced Configuration

ECG waveform not cascading Incorrect Advanced Cofigurationsetting

Change Advanced Configuration setting to:Second trace source = ECG; ECG gain =automatic

Heart rate not detected Patient electrodes ECG 1Lead wiresCableECG cable connectionFailed main boardPossible patient physiology problemPatient with Pacemaker?

Heart rate disagrees with Pulse rate Possible patient physiology problem Repeat on another patientPatient with Pacemaker? ECG 1

SPO2 1Compare manual palpationReinstall software

Heart rate disagrees with manualpalpation

Possible patient physiology problem Does patient have abnormal ECG?Repeat on another patientECG 1

SPO2

Sp02 displays not active Incorrect brand sensorFailes Sp02 boardFailes Sp02 sensor

SPO2 1

Sp02 displays inaccurate

Impedance Respiration

Possible patient physiology problem Sp02 1

IR waveform not displayed (dashes) Possible patient physiology problem ECG 1Poor signal LA/RA placement Use modified electrode placement on chest

walls

Service Manual 6200-43E Rev. A WELCH ALLYN ATLAS MONITOR 13

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Section 3 -Troubleshooting 3.2 Chief Complaint, Cause and Corrective Action

BP

Complaint Cause Corrective Action

BP measurements inaccurate

BP not working

Auto not working

Cuff pressure too high

Cuff Pressure too low

Cannot take reading in time

Incorrect cuff size Try different cuff - refer to Operator Manual forIncorrect cuff placement sizing information and proper cuff placement.Possible patient physiology problemCalibration needed CalibratePressure leak BP1

BP1

BP1, Button 1

BP1, Calibrate

BP1, Calibrate

Incorrect cuff size Try different cuff - refer to Operator Manual forIncorrect cuff placement sizing information and proper cuff placement.Patient movementPossible patient physiology problemCalibration needed CalibratePressure leak BP1

Cannot achieve target pressure Calibration needed CalibrateInitial pressure set too low for patient BP1physiology

Hold pressure too long Software problemValve problem

BP1Reload SoftwareReplace main board

Dumps pressure while inflating Software problem BP1Valve problem Reload SoftwareHardware sensor problem Replace main board

TEMP

Readings inaccurate Incorrect probe placement See Probe insert materialPossible patient physiology problemPoor physical contact with patient Use gel, adhesive tape to improve contactExcess aiflow, sunlight on probe Protect probe from light, airflowFailed probe Temp 1

Cannot read -wrong language Language set wrong Top entry is always language. Step throughchoices with <SET> button while top item ishightlighted

Nurse Call

Does not workIntermittent signal

Brief signals

Relay failure Connect Ohmmeter across pins 1 and 8.Cable Expect infinity. Force an alarm state andCable connection expect 0 Ohms.

Battery tone errors Connect ACBattery warnings will signal NurseCall for only a second , every minuteor two

14 WELCH ALLYN ATLAS MONITOR Service Manual 6200-43E Rev. A

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Section 3 - Troubleshooting

SERVICE MANUAL 6200-43E REV. A WELCH ALLYN ATLAS MONITOR 15

Remove all instrument cables and hosesInstall printer paper if printer is fitted

Review customer complaint and determine if it is safeto plug in and turn on Atlas

If not safe to power up: smoke/flames/smell reported?

Goto Power 1

Check power available lightGoto Power 2

Check power-up stateGoto Power 3

Set language and Preserve customer settingsGoto Test Setup 1

Check date/timeGoto Test Setup 2

Reset to factory defaultsGoto Test Setup 3

Check software/firmwareGoto Test Setup 4

Check CRT Alignment TestGoto CRT 1

Check Button TestGoto Button 1

Check Display A/D ChannelsGoto A/D 1

Check LED testGoto LED 1

Check Printer alignment testGoto Printer 1

Check Printer functionGoto Printer 2

3.3 TOP LEVEL TROUBLESHOOTING INDEX

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Section 3 - Troubleshooting

16 WELCH ALLYN ATLAS MONITOR SERVICE MANUAL 6200-43E REV. A

Check BatteryGoto Battery 1

Check Alarms/SoundsGoto Sound 1

Check BPGoto BP 1

Check ECGGoto ECG 1

Check SPO2Goto SPO2 1

Check TempGoto Temp 1

Check CO2Goto CO2 1

3.3 TOP LEVEL TROUBLESHOOTING INDEX

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Section 3 - Troubleshooting

SERVICE MANUAL 6200-43E REV. A WELCH ALLYN ATLAS MONITOR 17

Disassemble and inspect power supply, wiresCheck fuse in power supplyCheck fuse in neutral wire to power supplyTest power supply on benchCheck fuse in battery cable

If AC~ not lit, check power cord continuity, outlet poweravailableCheck connection at appliance inletGoto Power 1

Turn on powerGreen light in power button

If not lit, goto LED 1

Loud beep when button pressedIf not heard, goto Sound 1

Fan running (622xx and 623xx)If not running, goto Fan 1

Three dashes in SYSTOLICThree dashes in DIASTOLIC

If not seen, goto LED 1If passed, goto BP 1

Two dashes in SPO2 (takes several seconds after BPdashes come on)Three dashes in PULSE (takes several seconds after BPdashes come on)Pleth: none, or a single bar at the bottom, or two bars at thebottom

If not seen, goto LED1If passed, goto SPO2 1

No lights in TEMP (622xx and 623xx)If any are lit, goto Bad Boot 1

No lights in ALARMS OFF buttonsIf any are lit, goto Bad Boot 1

3.4 Diagnostic Tests

Power 1

Power 2

Power 3

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Section 3 - Troubleshooting

18 WELCH ALLYN ATLAS MONITOR SERVICE MANUAL 6200-43E REV. A

X lit on AUTOIf not lit, or a number lit, goto Bad Boot 1

AC~ litIf not lit, goto LED 1

CRT display comes on slowly if cold, quickly if still warmfrom last use.May see version string in center if comes on quickly, not aproblem if not seen because it comes on slowlyCRT: three dashes for Heart RateHeart pictureLead select symbolScale barOne or two lines of dashes for waveforms – depends uponsettingsThree dashes for MAP – or blank, depends upon settings.

If not seen goto CRT 2

Error message(s) at bottom of screen?If message, review cause in User Guide

If 622xx or 623xx, pull AC cable. Should be no changeexcept AC~ unlit.

If system dies immediately, check fuse on batterycable

If fuse is OK, either charge battery for 2+hours or goto Battery 1

If errors of low, very low or depleted battery, plugback in and repeat test in 2 hours

Press <DATE/TIME><TREND>Get Advanced Configuration menuSet language to your native tongue if necessary toallow you to write down the other settings . The topitem is always the language, press either <SET> button tostep through list.Write down all settings for resetting to customer preferencelaterPress <PRINT> if printer fitted

If printer problems, goto Printer 1Press <TREND> to return to idle screen

Test Setup 1

3.4 Diagnostic Tests

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Section 3 - Troubleshooting

SERVICE MANUAL 6200-43E REV. A WELCH ALLYN ATLAS MONITOR 19

Press <DATE/TIME>Get date/time menuVerify date/time, set if necessary.

If date was significantly wrong, goto Date 1Press <TREND> to return to idle screen

Press <DATE/TIME><LEAD SELECT>Get Service Mode menuExamine version/configuration data in lower half of menu,and write it all downPress <SELECT> to highlight Reset to factory defaultsPress <BP START/CANCEL> to reset configurationPress <TREND> to return to idle screenPress <DATE/TIME><TREND>Get Advanced Configuration menuSet language to your native tongue if necessaryWe have just reset to factory defaults . Compare settingsto factory defaults appropriate for the country – in Operatormanual if not here too.

If not matching, goto NVRAM 1Press <TREND> to return to idle screen

Compare version numbers from Test Setup 3 to table inService Guide

Press <DATE/TIME><LEAD SELECT>Get Service Mode menuPress <SELECT> to highlight CRT Test patternNote screen alignment

If misaligned, mechanical adjustment required ondisassembled unitPress <TREND> to return to idle screen

If no display at all on CRT:Check connections:

CRT to Yoke cableCRT to Anode cableCRT to Deflection boardDeflection board to Main board cable

Replace CRTReplace Deflection boardReplace Main board

Test Setup 2

Test Setup 3

Test Setup 4

CRT 1

CRT 2

3.4 Diagnostic Tests

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Section 3 - Troubleshooting

20 WELCH ALLYN ATLAS MONITOR SERVICE MANUAL 6200-43E REV. A

If distorted display on CRT:Check connections:

CRT to Yoke cableCRT to Anode cableCRT to Deflection boardDeflection board to Main board cable

Replace Deflection boardReplace CRT

If good display but some items are distorted or missingfrom CRT display:

If ECG waveform, heart rate, lead selected, heartsymbol missing:

Replace Main board

Press <DATE/TIME><LEAD SELECT>Get Service Mode menuPress <Select> to highlight Button testPress <BP START/CANCEL> to start testPress every button on system, <BP START/CANCEL> lastVerify that buttons match up with their names, and that allbuttons are functional.

If a button does not report its name, goto Button 2If a button reports the WRONG name, goto NVRAM

1Press <Trend> to return to Idle screen

If a single button does not report its name: Replace Dis-play boardIf multiple or all buttons do not report their names:

Check Display board to main board cableReplace Display boardRe-install softwareReplace CPU boardReplace Main board

Button 1

Button 2

3.4 Diagnostic Tests

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Section 3 - Troubleshooting

SERVICE MANUAL 6200-43E REV. A WELCH ALLYN ATLAS MONITOR 21

Press <DATE/TIME><LEAD SELECT>Get Service Mode menuPress <Select> to highlight Display A/D channels (threeor four screens worth)Write down all values for later reviewNeed to provide tables of reasonable values, trouble-shooting pointersPress <Set> and write down all values for each screen

If data missing, corrupt or questionable, gotoNVRAM 1 or Replace Display Board?

Press <Trend> to return to Idle screen

Press <DATE/TIME><LEAD SELECT>Get Service Mode menuPress <Select> to highlight LED testPress <AUTO> to turn on all LEDsPress <BP START/CANCEL> to show automatic testpatternWatch for a while, look for glitches in patternPress <Set> to go to manual mode and step throughindividual segments if needed to observe a problem

If any failed LEDs, multiple segments lighting atonce, or other problems: Replace Display Board

Press <Trend> to return to Idle screen

Press <DATE/TIME><LEAD SELECT>Get Service Mode menuPress <Select> to highlight Printer test pattern (if fitted)Press <BP START/CANCEL> to start test patternPrinter should print test patternPress any key to end printingExamine printout

If too dark/too light Goto Printer Settings 1 andPrinter Settings 2

If alignment errors: Adjust printer mechanismIf feeding problems: Adjust printer mechanism,replace feed rollerIf missing sections/rows of printout: Replace PrinterHardwareIf darkness not consistent across page: ReplacePrinter Hardware

A/D 1

LED 1

Printer 1

3.4 Diagnostic Tests

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Section 3 - Troubleshooting

22 WELCH ALLYN ATLAS MONITOR SERVICE MANUAL 6200-43E REV. A

NOTE: Configuration settings for printing are different fortext pages (Advanced Configuration and Trend displays)and for waveforms.

Connect ECG simulator to generate a sample waveformPress <PRINT> and look at waveform printout. Look fordarkness, thickness of lines, legibility of text, blurring,“blooming” of text

Press <DATE/TIME><TREND>Get Advanced Configuration menuPress <PRINT> and look at text printout.

If waveforms too light or dark: goto Printer Settings1:If text too light or dark: goto Printer Settings 2If alignment errors: Adjust printer mechanismIf feeding problems: Adjust printer mechanism,replace feed rollerIf incorrect printout, missing elements, missing grid,etc

Connect serial cable between Atlas and PCStart HyperTerminal on PCAt Pangea> prompt, type:Pangea> nvram getprinter_strobe_width_normal<ENTER>Write down this valueIf problem is that WAVEFORM printout is too light, increasethis number. If the WAVEFORM printout is too dark, de-crease this number.Range is 0-256. Set new value with:Pangea> nvram set printer_strobe_width_normalXXX<ENTER>Pangea> nvram write<ENTER>Where XXX is the new value.Repeat the test that showed the problem.Repeat this test-and-set process until ideal value isachievedDisconnect serial cable

Printer 2

Printer Settings 1

3.4 Diagnostic Tests

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Section 3 - Troubleshooting

SERVICE MANUAL 6200-43E REV. A WELCH ALLYN ATLAS MONITOR 23

Connect serial cable between Atlas and PCStart HyperTerminal on PCAt Pangea> prompt, type:Pangea> nvram get printer_strobe_width_text<ENTER>Write down this valueIf problem is that TEXT printout is too light, increase thisnumber. If the TEXT printout is too dark, decrease this num-ber.Range is 0-256. Set new value with:Pangea> nvram set printer_strobe_width_textXXX<ENTER>Pangea> nvram write<ENTER>Where XXX is the new value.Repeat the test that showed the problem.Repeat this test-and-set process until ideal value is achievedDisconnect serial cable

A bad date may indicate a battery problem. If date was bad,turn off unit, pull power cable, reconnect power cable, turn onunit. Check date again.

If date comes back bad:Model 621xx: test/replace lithium on-board batteryModel 622xx/623xx: charge/test batteryIf battery OK/Charged/Replaced repeat Test Setup 2

If still not maintaining date goto NVRAM 2

Failure to correctly reset factory defaults indicates memoryproblems. Changing only the language should not changeany of the other factory default settings.Reinstall software and repeat test.

If still failingReplace CPU board

Date comes back wrong and battery already tested goodReinstall software and repeat test

If still failingReplace CPU board

Save Settings does not workReinstall software and repeat test

If still failingReplace CPU board

Printer Settings 2

Date 1

NVRAM 1

NVRAM 2

NVRAM 2

3.4 Diagnostic Tests

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Section 3 - Troubleshooting

24 WELCH ALLYN ATLAS MONITOR SERVICE MANUAL 6200-43E REV. A

System must have been plugged in for 24 hours for a realbattery test to guarantee that battery is fully charged.Press <BP Start/Cancel> to start a BP measurement;press <BP Start/Cancel> again after three seconds toabort the measurement – this puts an entry into the Trendlist.Press <DATE/TIME><LEAD SELECT>Get Service Mode menuPress <SELECT> to highlight Battery testThe menu reports:

Battery Low Time XXX andBattery Dead Time YYY

These are the results from the last battery test. The BatteryLow Time is the time in hours and minutes that the batteryran in the last test until the Low Battery alarm started, andthe Battery Dead Time is the time from the beginning of theLow Battery Alarm until the system turned itself off when thebattery voltage reached the cutoff level.Write down the Battery Low Time and Battery Dead Time.Note that the value 2:08 is the default (128 minutes) andindicates that no test has been run before.Unplug AC cord to start battery test.The timers will begin.Leave the system until it powers down.One minute before power down, the system should print aTrend printout (if equipped with printer)

If Trend printout does not occur:When system powers off, plug in AC and turn the systemon.Press <DATE/TIME><LEAD SELECT>Get Service Mode menuPress <SELECT> to highlight Battery testThe menu reports:

Low Time XXX andDead Time YYY

write down the new values. Compare these to the previousvalues, and to the minimum specification: Low Time >= 60minutes; Dead Time >= 10 minutesIf either number is below specification, replace the battery

Power-on beepTurn off system, and turn on. Should hear loud Power-onbeep.

If beep not heard: Continue with this test. If no othersounds are heard, Replace Speaker Hardware.

Battery 1

Sound 1

3.4 Diagnostic Tests

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Section 3 - Troubleshooting

SERVICE MANUAL 6200-43E REV. A WELCH ALLYN ATLAS MONITOR 25

ECG pulse tone, pulse volume control, saving set-tings, <HR ALARMS Off> buttonConnect ECG simulator with a normal ECG setting.Should hear: heart rate beep, at constant high pitch.

If heart rate beep not heard, press SPO2 volumebutton “+” three timesIf heart rate beep still not heard:

If power-on beep was heard, isolate toCPU/main board. Could also be displayboard with a bad button.

Press SPO2 volume button “-“ 8 times. Should get quieterand finally silent.

If heart rate beep does not change volume: ReplaceDisplay Board

Press <DATE/TIME><PRINT> or <DATE/TIME><FREEZE> to Save setting s.Turn system off and back on.Heart rate beep should be silent even though heart rate isdisplayed.

If heart rate beep is not silent on power up: gotoNVRAM3

Press SPO2 volume button “+” 8 times. Pulse tone shouldget audible and then louder.

If heart rate beep does not change volume: ReplaceDisplay Board hardware

Disconnect ECG cableShould hear Technical alarm and see error message.

If alarm not heard:

Press <HR ALARMS Off> button.Should stop Technical alarm sound, erase error message,and light LED in <HR ALARMS OFF> button.

If alarm not silenced:If error message not erasedIf LED not lit:

Press <HR ALARMS OFF> button again.Should hear Technical alarm sound, see error message,LED unlit in <HR ALARMS Off> button.

If alarm not heard:If error message not displayed

3.4 Diagnostic Tests

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Section 3 - Troubleshooting

26 WELCH ALLYN ATLAS MONITOR SERVICE MANUAL 6200-43E REV. A

If LED not unlit:Turn system off and on to clear state.SPO2 pulse toneAttach SPO2 cable and cuff, and attach to simulator.Set simulator to normal heart and SPO2 settings.Should hear heart rate beep, different tone than when ECGwas connected.

If heart rate beep not heard:

Change SPO2 setting on simulator, should hear tone pitchchange up or down tracking simulator setting.

If pitch does not change with simulator SPO2 per-centage changes:

Limit Alarm, alarm volume control, Silence button,Technical Alarm, <SPO 2 ALARMS Off> buttonPress right <Select> button until SPO2 LO is flashing, pressright <Set> UP to change SPO2 LO setting to 99.Wait until SPO2 LO stops flashing (10 seconds).Set simulator SPO2 at 90%.Should hear Limit alarm.

If alarm not heard:

Press <Alarm Volume> “-“ eight times. Should get quieterbut not silent.

If alarm volume does not change: Replace DisplayBoard hardware.

If alarm volume goes all the way to silent: Replacedisplay board.

Press <Alarm Volume> “+“ eight times. Should get louder.If alarm volume does not change: Replace Display

Board hardware

Press <Silence> and start stopwatch. Should be quiet forthe time set in Advanced Configuration menu, then alarmcomes back on.

If alarm not silenced for set period:

Disconnect SPO2 cable from Atlas.Should hear technical alarm, see error message.

If alarm not heard:If message not shown:

Press <SPO2 ALARMS Off> button.Should stop Technical alarm sound, and erase error mes-

3.4 Diagnostic Tests

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Section 3 - Troubleshooting

SERVICE MANUAL 6200-43E REV. A WELCH ALLYN ATLAS MONITOR 27

sage, and light LED in <SPO2 ALARMS OFF> buttonIf alarm not silenced:If error message not erasedIf LED not lit: Replace Display Board hardware

Press <SPO2 ALARMS OFF> button againShould hear Technical alarm sound, see error message,LED unlit in <SPO2 ALARMS Off> button

Turn system off and back on to clear state.

<CO2/RESP ALARMS Off> buttonPress <DATE/TIME><TREND>Get Advanced Configuration menu.Set Second trace selection to CO2.Press <TREND> to return to idle screen.Insert CO2 watertrap with hose.Breath into hose until waveform is displayed.

If waveform not displayed after 30 seconds gotoCO2 1

Remove CO2 watertrap.Should hear Technical alarm and see error message.

Press <CO2/RESP ALARMS Off> button.Should stop Technical alarm sound, and erase error mes-sage, and lightLED in <CO2/RESP ALARMS OFF> button

If alarm not silenced:If error message not erasedIf LED not lit: Replace Display Board hardware

Press <CO2/RESP ALARMS OFF> button again.Should hear Technical alarm sound, see error message,LED unlit in <CO2/RESP ALARMS Off> button.

Turn system off and back on to clear state.

<BP ALARMS Off> button

3.4 Diagnostic Tests

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Section 3 - Troubleshooting

28 WELCH ALLYN ATLAS MONITOR SERVICE MANUAL 6200-43E REV. A

With no hose connected to BP port, press <BP START/CANCEL> button.Place finger over BP port, blocking flow, causing BP todetect overpressure and abort.Should hear Technical alarm and see error message.

If alarm not heard:If error message not displayed

Press <BP ALARMS Off> button.Should stop Technical alarm sound, and erase error mes-sage, and lightLED in <BP ALARMS OFF> button

If alarm not silenced:If error message not erasedIf LED not lit: Replace Display Board hardware

Press <BP ALARMS OFF> button againShould hear Technical alarm sound, see error message,LED unlit in <BP ALARMS Off> button

If alarm not heard:If error message not displayedIf LED not unlit: Replace Display Board hardware

Turn system off and back on to clear state.

Battery toneSystem must have been plugged into AC for at least 2hours.Disconnect AC power on running system.Connect BP hose to simulator.Press <AUTO> to select 1 minute intervals.Wait for battery to run down. With fully charged battery, afterno less than 50 minutes, should hear single tone, get mes-sage that system will shut down in 10 minutes.

If alarm tone not heard:If message not shown:

Should hear tone again in two minutes, and again twominutes after that.

If alarm tone not heard at two minute intervals:

Five minutes after first message, should start hearing toneevery minute, and get message that 5 minutes remain untilshutdown.

If alarm tone not heard at one minute intervals:If message not shown:

3.4 Diagnostic Tests

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Section 3 - Troubleshooting

SERVICE MANUAL 6200-43E REV. A WELCH ALLYN ATLAS MONITOR 29

Ten minutes after first message, should hear technicalalarm, see a printout of Trend data if there is any unprintedtrend data accumulated, (which there is, we have beenrunning BP measurements) and error message that systemshutdown is imminent.

If alarm not heard:If message not shown:If Trend not printed:

Plug system back into AC.

Connect the BP port to the BP simulator.Set the simulator for a normal reading (140/80, 100BPM,NSR).Press <BP START/CANCEL>System should start pump, display manometer value inSYSTOLIC LED; this value should track and be very closeto pressure displayed by manometer in BP simulator (iffitted).Largest number shown in SYSTOLIC should be very closeto the Initial pressure setting recorded earlier from Ad-vanced Configuration in step Test Setup 1.System should step down pressure, showing step values inSYSTOLIC LED, and then display correct SYSTOLIC andDIASTOLIC values.System may show MAP value depending upon country andAdvanced Configuration setting.

If in-process display is wrong calibrate or blank:replace main boardIf final Systolic / Diastolic / MAP display is incorrect:

Calibrate BP

Press <DATE/TIME><TREND> to get to Advanced Con-figuration menuPress <Select> to highlight Initial pressurePress <Set> to change Initial pressure to 280 mmHgPress <Select> to highlight MAPPress <Set> to change MAP to YesPress <TREND> to return to idle screen.

Press <BP START/CANCEL>System should start pump, display manometer value inSYSTOLIC LED; this value should track and be very closeto pressure displayed by manometer in BP simulator (iffitted).

BP 1

3.4 Diagnostic Tests

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Section 3 - Troubleshooting

30 WELCH ALLYN ATLAS MONITOR SERVICE MANUAL 6200-43E REV. A

Largest number shown in SYSTOLIC should be very closeto the Initial pressure setting of 280 mmHg.

If pressure shown exceeds 300 mmHg: ReplaceMain Board hardware

System should step down pressure, showing step values inSYSTOLIC LED, and then display correct SYSTOLIC andDIASTOLIC values.System should show MAP value. MAP value should matchwhat is shown by simulator.

If in-process display is wrong or blank:If final Systolic / Diastolic / MAP display is incorrect:

Calibrate BP

Set simulator to highest Systolic <=250, lowest Diastolic >=30, and lowest heart rate >=30Press <AUTO>X goes unlit, 1 flashes for 10 seconds20 seconds after 1 stops flashing, BP measurement startsBP reading as above.

If BP does not start: Replace Main Board hardwareIf BP measurement incorrect: Calibrate BP

No less than 30 seconds after completing the measure-ment another measurement should start.

If measurement does not start automatically: Re-place Main Board hardware

While it is pumping up, press <BP START/CANCEL>.Measurement stops immediately and pressure is dumped(as seen on manometer on simulator).

If measurement does not stop immediately: ReplaceMain Board hardware or Display Board hardware (ifbutton is the problem)If pressure does not drop below 10mmHg immedi-ately: Replace Main Board hardware, BP Valve

Press <AUTO> and X lights up (not flashing)

Disconnect the tubing from the BP port on the Atlas.Press <BP START/CANCEL> and note the time (to thesecond)The BP should abort with an alarm after no longer than oneminute?

3.4 Diagnostic Tests

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Section 3 - Troubleshooting

SERVICE MANUAL 6200-43E REV. A WELCH ALLYN ATLAS MONITOR 31

Connect a 5 lead cable set to the simulator and to Atlas.Configure the simulator for NSR 100BPM and ImpedanceRespiration,Plug the cable into Atlas.Press <DATE/TIME> <TREND>Get Advanced Configuration menu.Press <Select> to highlight ECG lead setPress <Set> to:Set ECG lead set to 5 wireSet ECG gain to AutomaticSet ECG speed to 25mm/sSet ECG bandwidth to MonitorSet Second trace selection to ECGPress <TREND> to return to idle screenShould see:

ECG cascading onto second lineScale bar on left of top lineHeart rate displayed as set on simulatorLead Selected = IIHeart rate tone high pitchedIf ECG waveform not seenIf ECG waveform not cascadingIn Scale Bar not on top lineIf Heart Rate not displayed (or displayed incorrectly)If Lead Selected not shownIf Heart rate tone not heard

Re-install softwareReplace CPU boardReplace Main board

Press <LEAD SELECT> and step through each of the leadsettingsShould see:

Different looking ECG waveformsHeart Rate will go to dashes and alarms on someleads

Set lead selected to IIPress <DATE/TIME><TREND>Get Advanced Configuration menu.Press <Select> to change Second trace selection toRespirationPress <TREND> to return to idle screenShould see:

ECG on top lineScale bar on left of top lineHeart rate displayed as set on simulator

ECG 1

3.4 Diagnostic Tests

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Section 3 - Troubleshooting

32 WELCH ALLYN ATLAS MONITOR SERVICE MANUAL 6200-43E REV. A

Lead Selected = IIPulse tone high pitchedRespiration waveform on second lineRespiration Rate displayed as set on simulatorIf ECG waveform not seenIf ECG waveform not cascadingIn Scale Bar not on top lineIf Heart Rate not displayed (or displayed incorrectly)If Lead Selected not shownIf Heart rate tone not heardIf Respiration waveform not shownIf Respiration Rate not displayed correctly

Re-install softwareReplace CPU boardReplace Main board

Disconnect ECG simulatorTurn system off and back on to clear state.

Connect SpO2 cable and cuff and install cuff on simulator(or your finger).Set simulator to normal readings.See pleth signals immediately

If Pleth signals not seen within 10 seconds: gotoSpO2 2

See SpO2 percentage within several secondsIf SpO2 percentage not seen within 1 minute: goto

SpO2 2

See Pulse display at the same time as SpO2 percentageIf Pulse display not seen at same time as SpO2

percentage: goto SpO2 2

Disconnect SpO2 cuff from simulatorTechnical alarm soundsSee error “SpO2 cuff not detected”

If alarm not heard: goto Sound 1If error not seen:

Reconnect SpO2 cuff to simulatorTechnical alarm stopsError message erasedUnplug SpO2 cable from AtlasTechnical alarm soundsSee error “SpO2 cable missing”

SpO2 1

Note: The Nellcor or Noninshould be accurate* to thesimulators.

*2% or 3bpm for any in-range settings on thesimulators.

3.4 Diagnostic Tests

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Section 3 - Troubleshooting

SERVICE MANUAL 6200-43E REV. A WELCH ALLYN ATLAS MONITOR 33

If alarm not heard: goto Sound 1If error not seen: Re-install software

Turn system off and back on to clear state.

Verify that proper SpO2 cuff is being used: Nonin or NellcorReplace cuff.Check cable connections between SpO2 board and MainboardReplace SpO2 cuff socketReplace SpO2 board

Press <DATE/TIME><TREND>Get Advanced Configuration menuSet Second trace selection to CO2

Press <TREND> to return to idle screenInsert watertrap with tubing attachedShould see:Hear pump motor startSee dashed line waveform on lower traceSee dashes in Respiration RateSee 0 in mmHg (or % or kPa, as configured)

If pump motor does not start: goto CO2

If dashed waveform does not start: Perform CO2

calibrationIf Respiration Rate does not display dashes: Perform CO2 calibrationIf CO2 concentration is not 0: Perform CO2 calibration

Breathe gently and repeatedly over end of tubingShould see:See waveform within seconds of breathingSee respiration rate non zero within one minuteSee CO2 concentration non zero within one minute

If waveform does not track breathing: Perform CO2

calibrationIf respiration rate does not show reasonable value:

Perform CO2 calibrationIf CO2 concentration does not show reasonablevalue: Perform CO2 calibration

If CO2 calibration did not solve problem, replace CO2 boardRemove watertrap from AtlasTurn system off and back on to clear state.

Press <DATE/TIME><TREND>

SpO2 2

CO2 1

3.4 Diagnostic Tests

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Section 3 - Troubleshooting

34 WELCH ALLYN ATLAS MONITOR SERVICE MANUAL 6200-43E REV. A

Get Advanced Configuration menuSet Second trace selection to CO2

Press <TREND> to return to idle screenRemove and reinsert watertrap in socket. Make sure that itseats fully.

If pump does not start:Insert finger in socket and attempt to pressmicroswitchIf pump does not start:

Check connections between CO2

board and Main boardCheck connections between CO2

receiver and CO2 boardReplace CO2 receiverReplace CO2 board

Temp display is blankConnect temp probeSee temp display of ambient temperature

If display is not close to ambient temperature: Cali-brate Temp – if out of spec, replace probe, repeat. Ifstill out of spec, replace main board.

Disconnect temp probeTemp display becomes dashes

If temp display does not become dashes: Replacemain board

Turn power off and back on and see if anomaly returnsRe-install softwareRepeat test

If problem remains: Replace CPU board

Models 622xx and 623xx:If fan does not start when power turned on:

Check Fan to Main board cableReplace FanReplace Main board

CO2 2

TEMP1

Bad Boot 1

Fan 1

3.4 Diagnostic Tests

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WELCH ALLYN ATLAS MONITOR 1SERVICE MANUAL 6200-43E REV. A

Section 4 - Disassembly and Repair, Domestic

About Section 4This section is a guide for disassembly and reassemblyof the Atlas Monitor. Always refer to current revisionschematics, diagrams and final safety test proceduresbefore attempting to service this device.

Do not attempt to service this instrument unlessyou have received Service Training from WelchAllyn or an authorized agent, and are equipped withapproved processes and test equipment. For moreinformation about this call the Welch Allyn Cus-tomer Service phone number listed in Section 1 ofthis manual.

General:The outside housing is removed to provide full accessto all internal printed circuit boards and other compo-nents. Most of these are held in position with the sur-rounding “E-Pac” foam. E-Pac provides shockabsorbtion, ventillation channels, and spaces for thecomponents and boards. Pneumatic tubing and cablesmust be placed correctly in E-Pac to avoid problems withpinched tubing.

Problems During Service:A Technical Support phone number is listed in Section 1of this manual to answer questions you may have duringthe servicing of the Atlas Monitor.

Printer:Print-head, printer motor, and printer roller can be re-placed as necessary.

Printed Circuit Boards:There are no component level repairs for the PrintedCircuit boards. These are replaced if found to be de-fective. During the warranty period, boards that are foundto be defective should be returned to Welch Allyn.

CRT:The CRT and CRT Deflection Board are aligned at thefactory and as such are replaced as a matched set ifone or the other should fail in service.

Abstract of Disassemblyand Reassembly :

EXERCISE EX-TREME CAUTIONWHEN SERVICINGTHE ATLAS MONI-TOR! THE CRT AS-SEMBLY AND CRTD E F L E C T I O NBOARD OPERATEON APPROXI-MATELY 8,000VOLTS.

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2 WELCH ALLYN ATLASMONITOR

Section 4 - Disassembly and Repair, Domestic

SERVICE MANUAL 6200-43E REV. A

4.1.1 Open the paper door and remove thepaper roll. Close paper door.

.

4.1.2 Remove 4 Torx Machine screws withTorx - 10 screw driver.

4.1.3 Open the rear housing anddisconnect 2 ground wires fromground lug as well as printer cable..

4.1 MODEL 200 Dissassembly.

Unplug Monitor fromMains before disassem-bly! EXERCISE EXTREMECAUTION WHEN SERVICINGTHE ATLAS MONITOR! THECRT ASSEMBLY AND CRT DE-FLECTION BOARD OPERATEON APPROXIMATELY 8,000VOLTS.

ESD: Circuit boards are sensitiveto static electricity. Use wrist strap,ESD mats and ESD storage bags.

Place Monitor on a foam pad toprotect the front of the unit and thepressure fitting on the front of theunit.

Caution: Do not pull display cable.

Model 200

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WELCH ALLYN ATLAS MONITOR 3SERVICE MANUAL 6200-43E REV. A

Section 4 - Disassembly and Repair, Domestic

4.1.4 Unplug the printer cable from jackJ7 of the Main PCB.

4.1.5 Remove Pump section.

4.1.6 Unplug Display Board Cable fromjack J8 of the Main PCB.

Note: Make sure this end of the cable isinstalled in J8 during reassembly sothat cable folds will be correct.

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4 WELCH ALLYN ATLASMONITOR

Section 4 - Disassembly and Repair, Domestic

SERVICE MANUAL 6200-43E REV. A

4.1.8 Unplug CPU/PCB from Main PCBPCA connector J4.

4.1.7 Remove E-Pac from over the CRT.

4.1.9 Unplug CRT socket board.

Do not bend pins.

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WELCH ALLYN ATLAS MONITOR 5SERVICE MANUAL 6200-43E REV. A

Section 4 - Disassembly and Repair, Domestic

4.1.10Protect CRT pins with cap T-XXXXX

4.1.11 Unplug Yoke cables from connectorJ2 of CRT Deflection Board.

4.1.12Unplug CRT Deflection Board fromMain PCB with connector tool T-16654

Do not bend pins.

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6 WELCH ALLYN ATLASMONITOR

Section 4 - Disassembly and Repair, Domestic

SERVICE MANUAL 6200-43E REV. A

4.1.13Unplug 4 connectors from side ofMain PCB.

4.1.14Remove Power Supply assembly.

4.1.15Remove alarm speaker.

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WELCH ALLYN ATLAS MONITOR 7SERVICE MANUAL 6200-43E REV. A

Section 4 - Disassembly and Repair, Domestic

4.1.16 Remove Main PCB from E-Pac and disconnect tubing and connectors.

4.1.17 Disconnect SpO2 board and remove it from E-Pac.

4.1.18 Remove main E-Pac section.

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8 WELCH ALLYN ATLASMONITOR

Section 4 - Disassembly and Repair, Domestic

SERVICE MANUAL 6200-43E REV. A

4.1.19Disconnect tubing from fitting.

4.1.20Remove SpO2 connector fromfront panel.

4.1.21Remove CRT ground wire. Do notremove screw and washer.

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WELCH ALLYN ATLAS MONITOR 9SERVICE MANUAL 6200-43E REV. A

Section 4 - Disassembly and Repair, Domestic

4.1.22 Remove opposite CRT` mounting screw and remove CRT.

4.1.23 Remove Keypad circuit board.

4.1.24 Remove Display PCB.

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10 WELCH ALLYN ATLASMONITOR

Section 4 - Disassembly and Repair, Domestic

SERVICE MANUAL 6200-43E REV. A

4.1.25 Remove soft keys from Bezel.

4.1.26 Unscrew Alarm Silence Buttonholding screw to remove Silencebutton.

4.1.27 Remove printer by depressing tab.

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WELCH ALLYN ATLAS MONITOR 11SERVICE MANUAL 6200-43E REV. A

Section 4 - Disassembly and Repair, Domestic

4.1.28 Slide printer out of rear housing.

4.1.30 To remove printhead, disconnectcable from printer PCB.Lift spring and remove printheadfrom printer frame.

4.1.29 Unplug motor connector. For reassembly, placeconnector on motorso orange wire is nearmounting screw.

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12 WELCH ALLYN ATLASMONITOR

Section 4 - Disassembly and Repair, Domestic

SERVICE MANUAL 6200-43E REV. A

4.1.32Remove connector.

Flex circuit is delicate. Therefore,do not pull on connector.. Usesmall screwdriver to pry connectorapart.

4.1.33For reassembly of printhead, uselong nose pliers to attach cable toeliminate stress on flex circuit ofprinthead.

4.1.31Remove backing plate.

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WELCH ALLYN ATLAS MONITOR 13SERVICE MANUAL 6200-43E REV. A

Section 4 - Disassembly and Repair, Domestic

4.1.34 Slide Power Supply cases apart.

4.1.35 Location of Power Supply fuse.

4.2 MODEL 200 Re-assembly.

Reassemble in reverse order ofdisassembly with special attention topaths for cables and tubing.

4.2.1

Two types of screws are used. Dis-play PCB is fastened with self tap.

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14 WELCH ALLYN ATLASMONITOR

Section 4 - Disassembly and Repair, Domestic

SERVICE MANUAL 6200-43E REV. A

4.2.2 Detail of Pump/Valve/CheckValvesubassembly for reassembly.

4.2.3 Printer chassis rests on lip at back ofcase.

4.2.4 The IEC connector must becentered in the hole before 4screws can be installed.

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WELCH ALLYN ATLAS MONITOR 15SERVICE MANUAL 6200-43E REV. A

Section 4 - Disassembly and Repair, Domestic

4.3 Other models dissassembly/reassembly.

Due to the similarities between theATLAS models, only key points areshown. Refer to the latest revisioninterconnect drawing, schematics, andlayouts when servicing this product.

4.2.5 Plug MCU/PCB in like this.

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Appendix A 10/14/99

Theory of Operation – Model 622/623

1 DC/DC Power Supply1.1 Overview:1.2 On/Off Circuits

1.2.1 Backup Regulator and Micro-Controller1.2.2 18V boost converter and FET ON/OFF switch

1.3 +12V Boost Converter1.4 Battery Charger:1.5 Linear Regulators – 5VDC and 3.3VDC

1.5.1 5V regulator1.5.2 3.3V Regulator

2 Patient Isolated Circuits2.1 Isolated Power2.2 A/D Circuits

2.2.1 PWM A/D2.2.2 A/D Multiplexer

2.3 Serial Communication2.4 Signal Isolation2.5 ECG Circuits

2.5.1 Overview2.5.2 Defib Protect, RFI Filtering2.5.3 Front End Buffer - 1st Gain Stage2.5.4 Wilson Network - Lead Select Mux2.5.5 Differential Amplifier and Slew rate limit2.5.6 Right Leg Drive Amplifier2.5.7 High Pass and Gain Stage

2.6 Temperature Amplifier2.7 Impedance Respiration

2.7.1 Overview2.7.2 Signal Source – Current Drive2.7.3 Differential Amplifier and Peak Detector2.7.4 Gain and Filtering

2.8 SpO2 Circuits3 Non-Isolated circuits - A/D and Mux

3.1 A/D – grounded circuits3.2 A/D Mux – grounded circuits

4 NIBP Circuits4.1 Overview - Safety:4.2 Primary Transducer - Amplifier:4.3 Safety Transducer - Amplifier

4.3.1 Current Source:4.3.2 Differential Amplifier and Offset Centering:

4.4 Hardware Overpressure:4.5 Pump and Relay Drive:

5 CRT Deflection Board5.1 Overview:5.2 Vertical Amplifier:

5.2.1 Ramp Generator:5.2.2 Vertical Amplifier:5.2.3 Zero Adjust:

5.3 Horizontal Amplifier:5.3.1 Horizontal Gain:5.3.2 Grid Voltages:

5.4 Video Amplifier:

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Appendix A 10/14/99

6 Recorder Electronics6.1 Overview:6.2 Power Supply – 24 Switcher6.3 Motor Driver:6.4 Temperature Amplifier:

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Appendix A 10/14/99

1 DC/DC Power Supply

1.1 Overview:

Atlas Model 622 and 623 can be powered either from AC or battery. A 50W, medical grade, offlineswitcher provides 12VDC from a universal AC input (85VAC to 264VAC – 50/60Hz). The battery is arechargeable 6-Volt, 6.5 Amp-Hour, Sealed Lead Acid Battery, and will provide about 1.5 hours on a fullycharged battery (Battery Life depends on usage, especially printer usage, NIBP cycles, and CO2operation).

The unit will operate from AC when the unit is plugged in, and switches to battery operation when AC isremoved. The battery is automatically charged whenever AC is connected.

The following supplies are generated on the Atlas Main Board: +12V DC Input: Output of AC/DC supply or Battery. Supply for CRT and miscellaneous analog circuits.

+5V DC Input: Output of Battery Charger or Battery. Supply for front panel LED’s.

+3.3V DC Input: +5V DC Supply for CPU board. Backup Regulator: Input Output of AC/DC supply or Battery. 3.3V supply, for real time clock and On/Off circuits.

Battery Charger: Input: Output of AC/DC supply Charge SLA battery.

+12V

AC Not Present

+5V

+3.3V

On/Off

AC Present

AC+12V

Battery

On/OffControlCircuits

+12VDCRegulator

BatteryCharger

+5VDCRegulator

+3.3VDCRegulator

AC/DCConverter

DC/DC CircuitsBlock Diagram

D310

Q311

Q303

BackupRegulator

1.2 On/Off Circuits

1.2.1 Backup Regulator and Micro-ControllerA 3.3V low backup regulator, U307, provides power to the On/Off circuits and provides power to the realtime clock on the CPU board. The On/Off circuitry is controlled by the mirocontroller U10. This

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Appendix A 10/14/99

controller performs the following functions:

1. Monitors the status of the front panel ON-OFF key. If the unit is off and the ON-OFF key is pressed,the controller will drive U10-6 high, which will enable power to the remainder of the instrument.2. At power up, the microcontroller will drive the beeper for about 1 second.3. At power up, the microcontroller will reset Shift Register U2. This will cause the following: The front panel LED's are blanked. The NIBP pump drive is placed in the off state.4. When the unit is powered on the microcontroller will communicate with the system CPU. When thefront panel ON-OFF key is pressed, the CPU will store away present operating conditions, then issues acommand to the microcontroller to shut instrument power off. U10-6 is driven low which will removepower from the remainder of the instrument.

1.2.2 18V boost converter and FET ON/OFF switchThe PWM controller, U301, is configured as an 18V boost-converter. An N-Channel MOSFET transistor,Q303, is used to switch power to the 12V regulator. As Q303 is configured as a high side switch, it isnecessary to develop a gate voltage of proper magnitude to turn Q303 on. Then, to enable power to the12V regulator, the following takes place:1. The microcontroller drives U10-6 high, turning transistor Q302 on.2. Transistor Q301 is switched on, supplying power to the PWM controller, U301.3. The boost regulator develops 18VDC, which will switch transistor Q303 On.

D D

D

D

U301-comp

u307-6

Q301-b

U301-sw

Q302-c

Q302-B

U301-pwr

U301-7

U301-ct

VBackup

AC+12V

Battery

+Vfuse

V

U2-Reset

On/Off-Key

PIC-Data

On/Off

Vbackup

PIC-audio

PIC-Clk

+18V

+ C301330uF

+ C304100uF

HS301

6078

R3051

+C3021uF

Q303MTP30N06VL

2 3

1

4

D301MBR2535CTL

1

324

+ C3324.7uF

U307

LP2951CD-3.3

873

62

15

4

VINFDBKSHTDN

TAPSENS

VOUTERR

GND

Q301MPSW51A

3

2

1

C303470pf

D302BAV99L

1

3

2

R3021.96K

F303

4Amp

U301MC34063AD

53

78

1

26

4

COMPTCAP

IPKIDC

ISWC

ISWEVcc

GN

D

+ C3391uF

R30351.1K

R304100K

Q302MMBT3904L

31

2

+ C3314.7uF

R30110K

R3074.64K

L3011mH

R30661.9K

C42.047uF

U10

D620361-MX10000

2

5

7

4

3

6

1 14

8

9

10

11

12

13ClkIn/Osc1/RB5

TC5/TOCK1

RC3

Vpp/MCLR/RB3

Clkout/Osc2/RB4

RC4

Vdd

Vss

RC2

RC1

RC0

RB2

RB1

RB0

R2210K

On/Off Circuit18V Boost - Mosfet Gate Voltage

On/Off Switch

Heatsinkfor D301

(Front Panel Key)

(pg 1)

(pg 3)

(To U2)

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Appendix A 10/14/99

1.3 +12V Boost ConverterThe +12V boost circuit provides regulated 12VDC. The input to the 12V converter is either battery or12V from the AC/DC converter. The circuit is configured as a boost PWM using current mode feedback.The PWM controller is a UC3843A. The controller includes an internal 2.5V, 2% reference, and anexternal 5V, 2% reference. Nominal output voltage for the boost converter is Vout = [2.5V*(1 +173.8K/4.64K)] = 12.1V.

The UC3843A requires 8.5V minimum to power on. The maximum voltage allowed on the switchingtransistor, Q305, is 15V. To meet both these requirements, the UC3843A is powered from 12.9V (+18V –5.1V zener diode D303)

When operating from battery, the converter will run at duty cycles over 50%, which requires slopecompensation for a current mode controller. Slope compensation is achieved by summing in part of theoscillator signal (pin 4) with the current sense line.

The PWM controller is current limited on a cycle to cycle basis by monitoring the voltage on the Isenseline, U302-5. Current limit is activated when the voltage at the sense line reaches 1V. The nominal DCvoltage at Isense is about 0.5V when operating from battery only, and 0.7V when operating from AC.Then, current limit is set to 5Amps when Atlas in operating on battery and 3Amps when operating onAC.

Q30

5-s

D304-C

Q30

5-gU302-comp

U302-pwr

U302-fb

U30

2-ou

t

D312-c

C305-1

Q304-e

L302

-1

U302-sense

Q305-d

U302-ct

Q303-s

AC+12V-fuse

+12V

5VRef

+18V

+V

L305Bead

C307.047uF

R315196

D304MBRS340T3

L303Bead

+ C3061uF

D3035.1V

13

U302UC3843A

3

57

14

1

10

812

911

VFB

ISENSERT/CT

VREF

COMP

OUT

PW

R-G

ND

Vcc

GN

DV

c

R3123.83K

R30817.8K

+ C3111000uF

R31110K

C3095600pF

R31410

C3082200pF

+ C3121000uF

R3177.5K

R3131.96K

R31010K

C336.047uF

D312BAV99L

1

3

2

R3160.1

+ C313330uF

+ C3101000uF

R3094.64K

C3055600pF

C335.047uF

Q304MMBT3904L

3

1

2

L30222uH

Q305

MTP30N06VL

23

1

4

+12V Boost(12.1V nominal)

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Appendix A 10/14/99

1.4 Battery Charger:The battery charger is a PWM buck converter. The input to the battery charger is 12VDC from the offlineswitcher. The UC3843A, normally a current mode controller, is configured for voltage feedback mode.The UC3843A has an under-voltage lockout for Vcc<8.5V. The controller operates such that with Vccless than 8.5V, the reference out is 0V, and will be at 5V with Vcc>8.5V. Then, the reference out (pin 14)can be used as an AC-ON detect signal.

The switching transistor for the buck converter is a P-Channel MOSFET (Q308). The output drive of thecontroller is the wrong polarity for driving a P-Channel MOSFET in a step down mode. Therefor,transistor Q306 is added to invert the PWM out signal. Fast turn-on of Q308 is provided when Q306 islow, fast turn-off is though Q307 (configured as an emitter follower).

The battery charger is a current limited - temperature compensated charger. Current limit is set to1.5Amps. Current through the 0.1Ohm sense resistor R327 is measured with Diff-Amp U305B. When thecharger current is at 1.5Amps, feedback is controlled by Op-Amp U304A. When the current drops below1.5Amps, the output of U304A goes low, reverse biasing Diode D308, and feedback will be controlled byOp-amp U304B.

Battery charge voltage is temperature compensated using Thermistor RT301, a 10K negative temperaturecoefficient resistor. Voltage over temperature follows the following charge profile:

Temperature Voltage Thermistor0C 7.05V 26.9K10C 7.0V 20.7K25C 6.85V 10K40C 6.7V 5.17K50C 6.65V 3.45K

For optimum battery life, the float voltage (25C, full charge) should be set to 6.85V +/- 50mV (6.85V +/-0.7%). To accomplish this tight tolerance, charge voltage at room temperature will be adjusted withpotentiometer R328. Nominal charge voltage at room temperature is:Vcharge = 5V * (1 + RA/RB) where,

5V is the reference in U303.RA is the series/parallel combination of R335, R336, and RT301 (nominal 3.465K @ 25C).RB is the series combination of R337and R338 (nominal 936 Ohms)

It is necessary to minimize current out of the battery when the unit is off. To reduce off current, transistorQ309 disconnects the battery from the battery sense resistors when AC in off. In addition, diode D307 isadded to prevent current from flowing from the battery into the battery current sense circuit, and to theoutput of the AC/DC converter.

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Appendix A 10/14/99

+12V

Ref-Batcharge

ACON

ACON

Ref-Batcharge

Ref-Batcharge

AC+12V-fuse

AC+12V-fuse

U305-pwr

AC+12V

Battery

To Linear Regulators

U30

4-1

Q30

6-b

U305-6

Q307-e

Q308-d

U304-5

U304-3

Bat-Adj

U303-ct

RT

301-1

U303-5

R339-2

U304-7

Q306-c

D307-A

Bat-fuse

Q308-g

Q309-3

U304-6

C319-1

Q309-b

U305-5

U30

3-ou

t

U304-2

Batt-fb

U303-cp

Q310-b

F302-2 AC+12V-fuse

R343-1

U303-fb

+

-

U304AMC34072

3

21

84

D305BAV99L

1

3

2

R34410K

Q308MTP23P06V

2

1

34

R33319.6K

R32610

R331

33.2K

R3207.5K

+ C318330uF

Q309MMBT3906L3

12

R323 1.96K

R32410K

Q307MMBT3904L

3

1

2

C3162200pF

R3251.96K

Q310MMBT3904L

31

2

D307MBRS340T3

R34110K

C315.047uF

+

-

U304BMC34072

5

67

84

R3354.32K

R34010K

R33219.6K

Q306MMBT3904L

31

2

L30447uH

R34219.6K

C322.047uF

+

-

U305BMC34072

5

67

84

R3378.87K

R3291K

D308 BAV99L

1

3

2

C321.01uF

C314.047uF

R32210K

R33419.6K

D306MBRS340T3

R3281K

R33919.6K

R33033.2K

R34510K

t

RT30110K

R32127.4K

F3014Amp

F3024Amp

R3270.1

U303UC3843A

3

57

14

1

10

812

911

VFB

ISENSERT/CT

VREF

COMP

OUT

PW

R-G

ND

Vcc

GN

DV

c

R338

1K

13

2

R3367.5K

+C3191000uF

R34310K

R31810K

R31919.6K

C320.01uF

C337.047uF C338

.047uF

D309BAV70L

1

3

2

L306BeadC340

.047uF

Float Voltage

Current Limit(1.5 Amp)

BatteryCharger Input to 5V and

3.3V linearregulators.

1.5 Linear Regulators – 5VDC and 3.3VDC

1.5.1 5V regulatorA series pass 5V regulator is built using transistor Q312 and op amp U305A. The reference for theregulator is the 5V reference from the PWM control IC U302. The output of the 5V regulator is turned offwhen the unit is turned off. When the 18V-boost circuit is shut down, power is removed to U302, and thenthe U302 reference is driven to 0V. Setting the reference to 0V will cause op amp U305 to turn the seriespass transistor Q312 off.

When operating from AC, transistor Q310 is turned on, which will turn transistor Q311 off. Power to the5V regulator is then provided through Diode D310 from the output of the battery charger circuit. Note thatthis voltage tap is before the current sense resistor, then load current on +5V does not affect the batterycharger current limit circuit. When AC is removed, the AC-On signal goes low, and Q310 turns off. Thegate of Q311 is then pulled up to 11.4V (12V – Vdiode). Transistor Q311 then turns on, and the 5Vregulator is powered from the battery.

1.5.2 3.3V Regulator3.3VDC is derived using a three terminal regulator. The output of the 5V regulator is used to power the3.3V regulator. The 3.3V regulator does not have an independent shutdown, but powers down as the 5Vregulator shuts down.

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Appendix A 10/14/99

DDD

+12V

D

+12V

+Vpump

+3.3V

5VRef

AC+12V-fuse

+5V

ACON

Battery

Batt Charger input

To Q309

U305-3

C324-2

U30

5-1

U30

5-2

Q312-g

Q310-b

R343-1

U306LF33CV

1 3

2

IN OUT

GN

D

C326.01uF

D310MBRS340T3

C3241000pF

R34710K

R346100

+ C323100uF

HS302

6078

Q311MTP30N06VL

23

1

4

R350

10K

D311BAV70L

1

3

2

+ C329100uF

C327.047uF

C330.047uF

+ C325100uF

R34910K

Q312

MTP30N06VL

2 3

1

4

C328.047uF

R34810K

+

-

U305AMC34072

3

21

84

R34310K

R34510K

Q310MMBT3904L

31

2

R34219.6K

D309BAV70L

1

3

2

R34410K

R34110K

+5V LinearLowDropout

HeatsinkforQ312

From BateryCharger Circuit.

2 Patient Isolated Circuits

2.1 Isolated PowerIsolated power is provided to the ECG, Temperature, Respiration and SpO2 circuits using an IsolationTransformer, T401. The power supply is a PWM controlled flyback converter. The PWM controller is anLM3524. Output voltage f+V is sampled and compared with the reference voltage s+5V. An error voltageis generated, and this voltage returned via opto U410. Voltage f+V is regulated to 7.4V. Additional tapson transformer T401 provide f-V (-7.4V). The switcher operates at 76.8KHz, controlled by a sync signalfrom the CPU board. The power supply is synchronized with the A/D converter used to digitize ECG,Temperature and Respiration signals.

S

S

S

S

S

SS

ED SE

S

FE-Pwr-Sync

+5V

+12V

+12V

f+V

s+5V

f-V

f+V

U402-1

C409-1

T401-4

Q40

1-g

U402-sen

opto-fb

iso401-a

Q40

2-e

Q401-s

U401-1

C408-2

U401-2iso401-b

U402-e

U402-ref

U402-rt

U401-3

f+V T401-1

T401-8

R419-2

U402-ct

R405215

C409470pf

R4031K

+C405100uF

+

C407100uF

R40710

D405BAV99L

1

3

2

R4095.11K

R408100

C410.01uF

R4060.2 R410

7.5K

Q402MMBT3906L 3

12

C414.047uF

R4115.11K

U402

LM3524DM

12

16

15

945

10

67

12111314

3

8

V-V+

VREF

VIN

COMP+SENSE-SENSE

SHTDWN

RTCT

CAEACBEB

OSCOUT

GN

D

+ C41210uF

U4104N25

1 6

2

5

4

C408.01uf

R40210K

R404196K

C402.047uF

C404.047uF

C420.047uF

C4112200pF

R42210K

+

- U401ALM358

3

21

84

D403

MBRS130T3

D401MBRS130T3

R4235.11K

R40110K

C433470pf

R419215

Q401MTD3055V

23

1

4

R41710K

TP459

TP462

TP464TP463

TP450

TP449

TP453

TP454

TP456

TP458

TP451

TP455

TP457

TP466

T401

IsoXfmr

5

8

1

2

3

4

IsolationBarrier

PatientIsolatedCircuits

GroundedCircuits

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Appendix A 10/14/99

From the raw f+V and f-V voltages, the following supplies are generated for the various patient isolatedcircuits:1. iso+5dig: Regulated 5V supply. This voltage is used to power the opto-isolators, digital control logic,

and 5V digital supply for the Nellcor SpO2 board.2. s+5V: Regulated +5V supply: Analog 5V supply for the Nellcor SpO2 board. This is also the

reference voltage used in the regulation of f+V.3. f+5V: Regulated +5V supply: Filtered and buffered from s+5V, this voltage is used for the A/D

reference.4. s-5V: Regulated –5V supply: Analog –5V supply used for the Nellcor SpO2 board.5. fVcc: LC Filtered voltage, derived from f+V. This voltage is used to power the Op-Amps used in the

ECG, Respiration, Temperature, and A/D circuits.6. fVee: LC Filtered voltage, derived from f-V. This voltage is used to power the Op-Amps used in the

ECG, Respiration, Temperature, and A/D circuits.

S

S

S

S

S

S

S

S

S

S

S

S

SS

S

S SS

fVcc

iso+5Vdig

s+5V

fVee

s-5V

f+V

f-V

f+5V

f+V

U40

3-fb

U401-7U401-5

+

C421

1uF

C401.047uF

TP468

L401 220uH

U40479L05

2 1367

5

IN OUTINININ G

ND

+ C43110uF

TP452

+ C4151uF

+ C43210uF

+ C406100uF

C403.047uF

C430.047uF

U40778L05

8 1

2 3 6 7

IN OUT

GN

D

GN

D

GN

D

GN

D

+ C43410uF

C424.047uF

+ C43510uF

U403LP2951C

873

62

15

4

VINFDBKSHTDN

TAPSENS

VOUTERR

GND

L402 220uH

+C4184.7uF

C417680pF

TP461TP460

+

-

U401BLM358

5

67

84

R41610K

TP465

R415100

C416.047uF

Isolated Supply VoltagesRegulation and Filtering

2.2 A/D Circuits

2.2.1 PWM A/D

A pulse width modulator is used as an A/D converter. The PWM runs at a 1.2KHz rate, synchronized bythe A/D sync signal. A/D sync is low for 52.1uSec, high for 781.25uSec. Using the values shown, theintegrator will ramp down 10.01V, and ramp up 25V. The voltage at the integrator output (U601-1) islimited to about 5V [5V*(73.2/83.2) + Vdiode)]. Then, the integrator starts at 5V and ramps linearlydown to –5V.

The analog input voltage to be digitized and the integrator output are the inputs to a comparator. Theoutput of the comparator is low at the start of an A/D cycle, and switches high as the integrator rampdrops below the input voltage being digitized (see the timing diagram below). A/D conversion isaccomplished by measuring the width of the PWM output signal. The A/D timer runs at 25.175MHz, thenthe A/D resolution is about 21000 counts (over 14 bits). Hysteresis is added to the comparator to avoidoscillations during switching. Note that since the output of the comparator is low at the start of the A/Dcycle, a resistor divider is formed at the comparator input. This divider reduces the Analog-In signal by0.75% [464K/(464K+3.48K)].

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Appendix A 10/14/99

EfVee

fVcc

E

f+5V

fVee

fVcc

E

iso+5Vdig

f+5V

Analog In

PWM-Out

U60

2-7

U601-2

U604-10

D601-2

U60

2-5

U60

2-2

U601-3

U601-1 U602-3

R607464K

R6081K

R60110K

R60346.4K

R6063.48K

C601

1000pF

C603680pF

D601MMBD1503A

1

3

2

R60410K

+

-

U601AMC34072

3

21

84

R60273.2K

+

- U602LM311

2

37

5 64 1

8

R6053.48K

U604D74HCT04

9 8

14

7

PWM-Out

IntegratorInput

+5V

-5V

(U604-10)

PWM A/DConverter

833uSec

52uSec

Analog In

ComparatorInputs

(U604-8)

f+5V

E

A/D-sync

U604E74HCT04

11 10

14

7

PWM-timer

2.2.2 A/D MultiplexerA 16-channel multiplexer (formed by two 8-channel multiplexers) is used to select the analog signal to bedigitized. Control of the multiplexer is through a serial communication channel from the main CPU. Thefollowing signals are digitized:

1. Ground Ground Reference for digitized signals, used in calibrating the A/D converter2. f1.24V Reference Voltage, used in calibrating the A/D converter3. ECG Amplified ECG signal4. V Buffer Output of the V-lead buffer, used to determine leads off5. LL Buffer Output of the LL-lead buffer, used to determine leads off6. LA Buffer Output of the LA-lead buffer, used to determine leads off7. RA Buffer Output of the RA-lead buffer, used to determine leads off8. RL Output Output of the RL amplifier9. Patient Temp Analog voltage representing patient Temperature10. Respiration Amplified Respiration signal11. Resp Leads Off DC impedance for respiration, used to determine respiration Leads off.

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Appendix A 10/14/99

2.3 Serial Communication

Serial data is transmitted to the isolated circuits through Optical Isolators. The following signals aretransmitted from the CPU board to the isolated circuits:

1. FE-Serial-Data: Serial Data transmitted from the CPU board to the Isolated circuits.2. FE-Data-Clk: Serial Data Clock.3. A/D Clk: Serial Data latch. Also used as clock for PMW A/D converter.

Serial Data is converted to a parallel format using Shift Register U605 and U606. The following Data istransmitted from the CPU board to the isolated circuits:

1. Mux-A/D-A Control bit A for A/D Mux2. Mux-A/D-B Control bit B for A/D Mux3. Mux-A/D-C Control bit C for A/D Mux4. Mux-Lds-A Control bit A for ECG Lead Select Mux5. Mux-Lds-B Control bit B for ECG Lead Select Mux6. Mux-Lds-C Control bit C for ECG Lead Select Mux7. Sw-RLD-RA Switch Reference Electrode to RA8. Sw-RLD-LA Switch Reference Electrode to LA9. Sw-RLD-LL Switch Reference Electrode to LL10. Sw-RLD-RL Switch Reference Electrode to RL11. MonBW Select 0.5Hz ECG high pass pole (used to restore ECG baseline).12. MuxB 0 – Select A/D Mux B; 1 - Select A/D Mux A13. Sw-RLD-V Switch Reference Electrode to V14. Sw-RespReset Switch Respiration High Pass Pole, used to restore baseline15. SpO2Reset Reset Nellcor SpO2 board16. Resp-Off Turn respiration off when respiration not used (shuts down drive signal).

fVcc

fVee

fVeefVcc

E

E

E

E

LA

vRL

V+

RA

LL

Analog ECG

f+1.24V

Resp-LdsOffAn-Resp

Patient-Temp

Mux B

Mux A

Analog In

Mux-A/D-AMux-A/D-BMux-A/D-C

U6034051

131415121524

611109

3

168

7

X0X1X2X3X4X5X6X7

INHABC

XVD

DV

SS

VEE

U6094051

131415121524

611109

3

168

7

X0X1X2X3X4X5X6X7

INHABC

XVD

DV

SS

VEE

MuxA

MuxB

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Appendix A 10/14/99

ED

ED

iso+5Vdig

SW-RLD-LL

SW-RLD-RASW-RLD-LA

SW-RLD-RL

SpO2-Reset

Mux-Lds-C

Resp-Off

Sw-RespReset

Mux-Lds-BMux-Lds-AMux-A/D-CMux-A/D-BMux-A/D-A

Sw-RL-VMuxB

MonBW

FE-Serial-Data

FE-Data-Clk

A/D-Clk

U605-out

U606

74HCT595

14

1110

1213

151234567

9

16

8

SER

SRCLKSRCLR

RCLKG

QAQBQCQDQEQFQGQH

QH

VCC

GND

U605

74HCT595

14

1110

1213

151234567

9

16

8

SER

SRCLKSRCLR

RCLKG

QAQBQCQDQEQFQGQH

QH

VCC

GND

2.4 Signal IsolationOptocouplers are used to electrically isolate signals. The following signals are transmitted across theisolation barrier through the optocouplers:

1. SpO2 out: SpO2 serial data, waveform and status information. Opto U411 Data from the SpO2 board to the CPU board.2. Serial Data: Serial Control data for isolated circuits. Opto U613 Data from the CPU board to isolated circuits.3. Serial Data Clock: Data clock for serial control data. Opto U612 Clock from the CPU board to isolated circuits.4. ADC Clock Clock for PWM A/D converter, also used to latch control shift registers. Opto U611 Clock from the CPU board to isolated circuits.5. PWM A/D data A/D Pulse width data. Opto U610 Pulse width data from isolated circuits to CPU board.6. Respiration Clock Clock for Respiration drive circuit (same signal as power supply sync) U710 Clock from the CPU board to isolated circuits.

2.5 ECG Circuits

2.5.1 OverviewThe front end will meet all applicable AAMI standards. Atlas provides a 5-wire front end, and will becompatible with both a 3-wire and 5-wire cable. Monitor (0.5Hz to 40Hz) Extended (0.05Hz to 100Hz)bandwidth will be provided. The ECG amplifier always transmits 0.05Hz to 100Hz data to the CPU board(unless in baseline restore mode), additional filtering for Monitor Bandwidth is implemented in software

2.5.2 Defib Protect, RFI FilteringThe ECG lead set includes a 1K resistor for current limiting. The neon bulbs act as a voltage clamp,limiting voltage to about 100V. Neons are chosen for their low capacitance and high DC isolation. Seriesresistors and diode clamps are used as a second set of protection for the front-end amplifiers. ResistorsR506, R507 and Diodes D506, D507, are used to reverse bias the lead clamp diodes (D501 to D505). Twopassive RC filters are used to reduce susceptibility to RFI and ESU.

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Appendix A 10/14/99

fVcc

S

fVee E

E E

RA

+clamp

D501-3

-clamp

N501LAMP NEON C506

220pF

D5075.1V

1 3

R50710K

C501220pF

D5065.1V

13

D501MMBD1503A

1

3

2

R50610K

R50810K

R50151.1K

Defib ProtectRFI Filtering

To Buffer Amp

2.5.3 Front End Buffer - 1st Gain StageGain of the first stage is 9.26 (1+10K/1.21K). Bias current for each input buffer is set to 1.25V/44Meg =28nA (VldsOff = 1.25V). On a leads-off condition, the two 22Meg resistor drives the input of the buffer to1.25V (VldsOff), and the amplifier output saturates high (at about 5.5V). The voltage out of each buffer ismonitored to detect a leads-off condition.

fVcc

fVee

E

VLdsOff

OutIn

U501-3

U501-2

R509-1

+

-

U501AMC34002

3

21

84 C510

220pF

R5181.21K

R51710K

R55722Meg

R50922Meg

0.1%

0.1%

Input BuffersGain = 9.26

2.5.4 Wilson Network - Lead Select MuxA 5 wire front end must be able to render the following vectors:

I LA - RAII LL - RAIII LL - LAaVR RA - 1/2*(LA + LL)aVL LA - 1/2*(RA + LL)aVF LL - 1/2*(LA + RA)V V - 1/3*(RA + LA + LL)

A resistor divider network (Wilson Network) is used to create the terms above. These vectors are thenswitched though the two Mux’s, into the differential amplifier.

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Appendix A 10/14/99

E

fVee

E

E

fVee

fVcc

fVcc

E

V+

RA

LA

LL

RA

V-

LL

aVL

RA

aVF

LAaVR

LA

V+

LA mux+

LL

mux-

RA

R533 10K

R536 10K

R530 10K

R529 10K

R532 10K

U5064051

131415121524

611109

3

16

8

7

X0X1X2X3X4X5X6X7

INHABC

X

VD

DV

SS

VEE

R534 10K

R535 10K

R537 10K

R531 10K

U5054051

131415121524

611109

3

16

8

7

X0X1X2X3X4X5X6X7

INHABC

X

VD

DV

SS

VEE

Lead Select

WilsonNetwork

2.5.5 Differential Amplifier and Slew rate limitA traditional 3-opamp gain stage (U507 and U508) is used to construct the differential amplifier. Thetopology is modified slightly with the addition of slew rate limiting (U509). The ECG signal is slew ratelimited to about 100V/sec. This is done to minimize distortion of the ECG trace in the presence or largepace pulses. The differential outputs of this stage are used as input to the RLD amplifier.

fVcc

fVee

E

fVee

fVcc

fVcc

E

fVcc

E

fVee

fVee

mux+

mux-

SingEnd Out

u508-2

diff-

u509

-4

U508-3

u501

-8

diff+

C5451000pF

+

-

U507AMC34002

3

21

84

R565121K

C543.047uF

R54610K

R54510K

C542220pF

R54410K

+

- U508AAD712

3

21

84

+

-

U507BMC34002

5

67

84

C5441000pF

R54710K

-

+ U509LMC7101

4

31

25

0.1% 0.1%

0.1%

Diff Amp and Slew Rate LimitDC Gain = 1

0.1%

2.5.6 Right Leg Drive Amplifier

The right leg amplifier performs two functions. First is to provide bias current to the input bufferamplifiers. Second, to reduce 60Hz interference (increase CMR). Patient Common mode signals areamplified and inverted, and this resultant signal used to drive the patient. Gain of the RLD amplifier at60Hz is maximized, while keeping the system gain stable. The RLD output is mux’d to the appropriatewire depending on the chosen input vector. For example, when looking at Lead I (LA-RA), the RLDsignal is switched to the LL buffer.

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Appendix A 10/14/99

E

fVcc

E

fVeefVcc

fVee

Sw-RLD-LA

Sw-RLD-RA

Sw-RLD-RL

Sw-RLD-LL

To RL

To LL

To LA

To RADiff+

Diff-

RL-mux

C514-2

U503-2

U504

DG202CSE

31

1416

119

68

1345

2

15

10

7

S1IN1

S2IN2

S3IN3

S4IN4

V+V-GND

D1

D2

D3

D4

TP551

R52510K

+

-

U503AMC34002

3

21

84

R52851.1K

R5271K

TP552

C5140.1uF

R52610K

R51610K

RLD Amp

RLD Mux

2.5.7 High Pass and Gain StageThe signal from the output of the differential amplifier is AC coupled before a final stage of amplification.The High Pass Pole is set to less than 0.05Hz (a 3.3 second time constant). Large DC signals aresometimes present, for example, following a Leads Off condition. In order to quickly restore the baseline,a transistor switch (Q504,Q505) is used to change the AC pole time constant to 0.33 seconds. Op AmpU508 provides the final amplification prior to the A/D converter.

E

fVcc

E

E

fVeeE

An-ECG

Sw-MonBw

Diff-out U508-5

Q504-d

U508-6

Q504-g

ecg-hp

Q504-s

+

-

U508BAD712

5

67

84

Q5042N7002

3

1

2

R55173.2K

R553100K

R549110K

R5521K

C516.047uF

Q5052N7002

3

1

2

C5153.3uF

R55019.6K

R5481Meg C517

.01uF

High Pass (0.05Hz or 0.5Hz)2-pole low pass

Gain StageGain = 74

2.6 Temperature AmplifierThe temperature option of Atlas is designed to operate with YSI-400 series probes. This probe has anegative temperature coefficient, R@30C = 1815Ohms, R@40C = 1200Ohms. The temperature amplifieris configured as a non-inverting gain stage. The positive input to the amplifier is a 1.25V reference. Theoutput of the temperature amplifier is V = Ref*(1+Rfb/Rthermistor).

The A/D converter will digitize the An-Temp input, along with the reference voltage and ground. Thegain of the A/D can be calibrated from the reference voltage measurement, and any drifts in the referencevoltage or A/D gain are compensated.

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Appendix A 10/14/99

E

E

fVee

fVcc

f+1.24V

+Clamp-Clamp

Patient-Temp

U608-3U608-1

Temp-In

D602BAV99L

1

3

2

C633.01uF

J601

CON2

12

R627 1.21K

R62451.1K

C635 .01uF

C634 .01uF

R6261K

R6251K

C6362200pF

+

-

U608AAD712

3

21

84

TemperatureAmplifier

TemperatureThermistor

0.1%

2.7 Impedance Respiration

2.7.1 OverviewImpedance respiration is accomplished by measuring a change of resistance across the patient’s chestduring breathing. The RA and LA electrodes (Lead I) are uses to acquire the respiration signal. A currentsource is driven through the patient, and the voltage developed across the patient is measured. The changein resistance caused by respiration is small, in the order of 1 Ohm. This small change must be measuredon top of a large baseline impedance, typically 100 to 1000 Ohms.

2.7.2 Signal Source – Current DriveAn AC current source is used as the input signal, a 34.8KHz square wave. The Power supply sync signal,at 76.8KHz, is transmitted across opto isolator U710. Flip Flop U701, configured as a divide by 2,converts this signal to a 34.8KHz. Current through the patient is about 150uA Pk-Pk, set by the output ofU710 (5V) and the circuit series impedance, 69K including cable resistance. The impedance of the patientis small (<2K) compared to the series impedance and has minimal affect on the magnitude of the drivecurrent. Diode clamps are used to protect the respiration circuits in the event of a Defibrillation pulse.

E

E

f+5V

Resp-Off

Right-Arm

+Clamp

Left-Arm

-Clamp

Resp-Clk

RespDr+

D702-3

D701-3 C701-1

RespDr-C702-1

+ C7194.7uF

D701MMBD1503A

1

3

2

C7021000pF

D702MMBD1503A

1

3

2R70431.6K

R70331.6K

C7011000pF

R7011.96K

R7021.96K

U701A74HC74

2

3

5

6

144

7

1

D

CLK

Q

Q

VCC

PR

GND

CL

RespirationDriveCircuit

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Appendix A 10/14/99

2.7.3 Differential Amplifier and Peak DetectorThe AC current driven though the patient develops a voltage across the RA to LA electrodes. This signalis measured and amplified with the Differential Amplifier formed by U702A/B. This amplifier convertsthe differential voltage across the patient to single ended signal, with a gain of 16.8. Inverting this signal(U703A), and summing the original signal and inverted signal through the dual Diode D705 then forms asynchronous peak detector. Then, the voltage on C711 is the DC resistance seen across the RA to LAbuffer. This baseline resistance is digitized, and if the signal is too large (>2.5K), a Respiration Lead Faultmessage is displayed. Note that this circuit measurement includes the two 1K resistors in the EKG cableset. This 2K resistance is subtracted in software before determining a leads off condition.

E

fVee

fVcc

E

fVee

E

fVee

fVcc

fVcc

E

EE

E

Resp-DC

Left-Arm

Right-Arm

D605-C

+Clamp-Clamp

U702-6D

703-

1U70

3-2

U702-1

U702-2

U702-5D704-3

U702-3D703-3

U702-7

R7163.16K

+

-

U702B

AD7125

67

84

R7153.16K

R710464K

+

-

U703AAD712

3

21

84

R7121K

R71415.8K

D704MMBD1503A

1

3

2

R71115.8K

C707330pF

C706330pF

D703MMBD1503A

1

3

2

D705MMBD354LT1

1

3

2

R7131K

R7081.96K

+

-U702AAD712

3

21

84

R709464K

R7071.96K

C7110.1uF

R7173.16K

C720.047uF

R724196KRespiration

Diff Amp

2.7.4 Gain and FilteringThe DC content (baseline resistance) of the respiration signal is not needed, so the signal is next ACcoupled, and additional gain applied before digitization. Low pass filtering is performed at this stage toreduce high frequency noise outside the respiration signal bandwidth. A baseline-reset circuit (transistorswitch Q701) is used to quickly restore the high pass pole if excessive DC voltage is present, for examplefollowing a Leads-Off condition.

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Appendix A 10/14/99

E

E

fVee

E

fVcc

E

E

Resp-Reset

An-Resp

Q701-d

Resp-AC

Q70

1-g

U703-6

U703-5

R722316

+

- U703BAD712

5

67

84

D706MMBD1503A

1

3

2

R720100K

C714.047uF

C7123.3uF

R71951.1K

R7231Meg

Q701MMBF4393L

23

1

C7130.1uF

R721316K

R718825K

B.W. = .06Hz to 16 Hz Gain =1000B.W. = 10Hz

D605-C

2.8 SpO2 CircuitsThe SpO2 transducer senses oxygen content of functional arteriolar hemoglobin through the use of light(red and infrared) passed through the sensor. The reflective characteristics of hemoglobin at thewavelengths used allow the pulse oximetry circuits to obtain changing saturation levels. This data is thenprocessed to obtain the oxygen saturation percentage and pulse rate.

Nellcor or Nonin Medical provides the SpO2 board (Nonin only for the model 621). The SpO2 boardincludes amplifiers and processing, and transmits serial data to the CPU board (Waveform data, SpO2%,and pulse rate). The Atlas monitor provides electrical isolation (power and data) for the SpO2 board. Notethat you must use Nonin probes with the Nonin SpO2 board, and Nellcor probes with Nellcor SpO2 board.

3 Non-Isolated circuits - A/D and Mux

3.1 A/D – grounded circuits

The A/D converter is designed by building a pulse width modulator (PWM) and a timer circuit. The PWMruns at a 1.2KHz rate, synchronized by the A/D sync signal (NIBP-ADC-Clock). A/D sync is low for52.1uSec, high for 781.25uSec. Component values are selected such that the integrator will ramp down4.7V, and ramp up 7.83V. The voltage at the integrator output (U601-1) is limited to about 5V[5V*(73.2/83.2) + Vdiode)]. Then, the integrator starts at 5V and ramps linearly down to 0.3V.

The analog input voltage to be digitized and the integrator output are the inputs to comparator U210. Theoutput of the comparator is low at the start of an A/D cycle, and switches high as the integrator rampdrops below the input voltage being digitized (see the timing diagram below). A/D conversion isaccomplished by measuring the width of the PWM output signal. The A/D timer runs at 25.175MHz, thenthe A/D resolution is about 21000 counts (over 14 bits). Note that since the output of the comparator islow at the start of the A/D cycle, a resistor divider is formed at the comparator input. This divider reducesthe Analog-In signal by 0.75% [464K/(464K+3.48K)].

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Appendix A 10/14/99

NIBP-PWM-ADC

P+5V

P+5V

NIBP-ADC-Clock

P+5V

Analog-Input

U207-3

U210-3

U210-7

U208-3

U208-2

U208-1

D201-C

U209-Out U210-2

A

AA

A

P+12V

A

A

A

A

A

R237464K

C221.047uF

C220

.01uF

+C2184.7uF

C2241000pF

R23173.2K

R23210K

R2353.48K

C225.047uF

U207B74HCT00

4

56

14

7

R2333.48K

+

-U210MAX941

2

36

1

4

7

5

R2343.48K

C219.047uF

+

-

U208AMC34072

3

21

84

R23010K

U207A74HCT00

1

23

14

7

D201MMBD1503A

1

3

2

NIBPPWM A/DConverter

PWM A/DConverter

Analog In

(U207-3) 781uSec

52uSec

0.31V

PWM-timer

ComparatorInputs

PWM-Out(U207-6)

+5V

IntegratorInput -f=1.2KHz

3.2 A/D Mux – grounded circuitsAnalog signals are switched to the A/D converter through MUX U209. Control of the multiplexer isthrough a serial communication channel from the main CPU. The following signals are digitized:

12. +5V/2 Sampled version of the 5V supply. Used to verify A/D operation.13. SafetyPres Safety Pressure Transducer14. PrimaryPres Primary Pressure Transducer15. P.75V Reference voltage for A/D calibration.

0mmHg pressure for Primary Transducer.16. P4.25V Reference voltage for A/D calibration.

300mmHg pressure for Primary Transducer.17. Print-Temp Printhead Temperature, used to compensate printer strobe width.18. BattVoltage Battery Voltage, used to warn of low battery condition.19. BattCurrent: Battery Charger Current, used only in service mode verification.

4 NIBP Circuits

4.1 Overview - Safety:

Two pressure transducers are used, a primary and safety transducer. The primary is used to make all BPmeasurements. Hardware circuits monitor the output of the primary transducer, looking for overpressurefaults. In addition, Software monitors the digitized outputs of the primary transducer, and detectsoverpressure faults. The following overpressure faults are detected in software (monitored once persecond):

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Appendix A 10/14/99

1. >=10mmHg pressure for 295 seconds2. >=15mmHg pressure for 175 seconds3. >295mmHg pressure for 0.5 seconds.

Software detected overpressure faults are considered application faults. The user is warned of a fault withan audible alarm and a ‘Check blood pressure cuff’ message on the CRT display. NIBP is not disabled forthis type of fault. In the event of a fault, the drive signals to the NIBP pump and valve are opened.

Two hardware faults are detected, pressure over 330mmHg (nominal trip point 314mmHg, and pressureover 15mmHg for three minutes (13.3mmHg nominal trip point). These faults are considered more serious(since software should have detected and corrected this condition). The user is notified with a ‘BPSYSTEM FAULT’ message, and NIBP is disabled. A redundant safety transistor is opened to ensure theNIBP pump is off and the valve is open.

The primary and safety transducer outputs are continuously digitized. The outputs of the transducers arechecked vs. each other, and if they disagree, an ‘NIBP Fault Message’ is declared and the NIBP system isdisabled. The outputs of the transducers are linearly proportional to the supply voltage (supply current forthe safety transducer). The transducers use unique reference voltages to ensure that a fault in onereference will not cause an equivalent gain error in both transducers.

The A/D also has redundant checks. Two reference voltages (derived from the primary transducerreference supply) are measured, and the A/D gain and zero is checked. In addition, a unique reference isdigitized, and compared vs. expected results. An error in any of these A/D measurements will again causean ‘NIBP Fault Message’, and the NIBP system will be disabled.

4.2 Primary Transducer - Amplifier:The primary pressure transducer is a fully calibrated and compensated transducer with built in voltageamplification. The output of the transducer is proportional to the supply voltage. With a 5V supply, theoutput of the transducer is:0mmHg = 0.5V.300mmHg = 4V.Op amp U204A is used to level shift the output of the transducer such that the nominal voltage for0mmHg is set to 0.75V. The CPU monitors the digitized zero pressure voltage, and any offset is corrected.This correction comes from the summation of an error correction signal through op amp U204B. The CPUwill output a pulse width modulated signal at 76.8KHz. This signal is RC filtered to provide ad DCvoltage at U204-5. This signal can adjust the offset seen at the A/D converter by +/-20mmHg.

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Appendix A 10/14/99

P+5V

P+.75V

+3.3V

NIBP-Offset-DAC

PrimaryPres

P201-Out

U204-5

U204-2

U204-7

U204-3

P201-pwr

P201-6

U204-1

C207-1

A

P+12V

A

A

A

A

A

A

A A

A

P+12V

A

A

C232.047uF

C227680pF

C209.047uF

C228.047uF

R2175.62K

R213237K

L202

Bead

C226.047uF

R2363.83K

R21823.7K

+

-

U204BMC34072

5

67

84

C231.01uF

R24421.5K

C206.047uF

R215100K

R21256.2K

+

-

U204AMC34072

3

21

84

+C2081uF

R2191.96K

GainandComp

XFPM-050KPGR-P1P201

1

2

3

6

R21619.6K

R21410K

+ C2071uF

PWM D/A76.8KHz

0mmHG = 0.5V 300mmHG = 4.0V

PrimaryTransducer

Zero Adjust+/-20mmHg range

4.3 Safety Transducer - AmplifierThe safety transducer is compensated for temperature drift, but gain and zero are not calibrated. Thesafety transducer does not include built in voltage amplification. The safety transducer output is adifferential voltage, proportional to the supply current through the device.

The initial accuracy of the safety transducer is very loose, in the order of +/-50%. However, the drift overtime and temperature is very good. Then, it is necessary to calibrate the output of the safety transducer.This is done my measuring a know pressure, measuring the output of the safety transducer, and storingcalibration constants in NVRAM. A two-point calibration procedure is used. Calibration is done at thefactory, and can be recalibrated in the field if necessary.

4.3.1 Current Source:Op amp U205A is configured as a current source for the Pressure Transducer, with the current throughthe transducer set to 1.5mA. Nominal gain for the transducer is 300mmHg = 75mV.

4.3.2 Differential Amplifier and Offset Centering:The output of the safety transducer is a differential voltage, with a nominal gain of 0.25mV/mmHg, and azero pressure offset voltage of +/-25mV. The A/D converter has an input voltage range of 0.5V to 5V. It isnecessary to both add both signal gain and offset centering to the transducer output before digitization.

Op amp U206A/B is configured as a differential amplifier, with a voltage gain of 22.5. The output of thedifferential amplifier is offset by 1.2V (U205B).

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Appendix A 10/14/99

5VRef

SafetyPres

P202-5

P202-Out+U206-1

U206-2

U206-7

U205-7

P202-Out-

P202-2U205-3

A

A

P+12V

P+12V

P+12V

A

A

A

A

A

A

A

P+12V

A

C212680pF

+

-

U205AMC34072

3

21

84

R22621.5K

R2251K

-+

FPNS-07PGRP2022

13

5

6

C216.047uF

+

-

U206BMC34072

5

67

84

+

-

U206AMC34072

3

21

84

+

-

U205BMC34072

5

67

84

C215.047uF

R2213.16K

R2221K

C211

.047uF

C213.01uF

TP226

R22321.5K

C214.047uF

R220806

C217

.047uF

R2275.11K

R2241K

ZeroOffset

SafetyTransducer

4.4 Hardware Overpressure:The output of the primary transducer is monitored for two overpressure conditions; pressures in excess of13.3mmHg (nominal) and 314mmHg (nominal) are detected. These error conditions are transmitted to thegate array on the CPU board, and if the error conditions are present for a long enough time period, a faultmessage is displayed, and NIBP is disabled (see above for safety performance operation).

The output of the Primary Transducer drives the two comparators U203A/B. The comparison voltage isderived through a resistor divider chain from a 5V regulator (U201). This regulator is the supply voltagefor the primary transducer, and sense the primary output is proportional to the supply voltage, toleranceerrors in the regulator are not critical.

P+12V+12V P+5V

P+.75V

NIBP-Overpressure

NIBP-15mmHg

P+4.25V

PrimaryPres

U203-5

U202-3

U202-5

U203-6

U203-3

U203-2

A

A

P+12V

A

A

+3.3V

A

A

A

P+12V

A

A

P+12V

A

AA

A

+3.3V

A

P+12V

+

- U203BLM393

5

67

84

R2111.96K

C203

.047uF

L201220uH

+C22910uF

R2081.96K

R207464K

R202174

+

-

U202AMC34072

3

21

84

C223.01uF

R2061K

+ C2024.7uF

C205

.047uF

+

-

U202BMC34072

5

67

84

C222.01uF

U20178L05

8 1

2 3 6 7

IN OUT

GN

D

GN

D

GN

D

GN

D

C201.047uF

R204150

C204.047uF

R201576

R2091K

+

- U203ALM393

3

21

84

R210464K

R205750

R2033.32K

Over PressureFault Circuit

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Appendix A 10/14/99

4.5 Pump and Relay Drive:Two independent dual transistor switches, Q202 and Q203 control the pump and valve. Q202 iscontrolled by logic circuits on the CPU board, and is normally in the on state. Q202 is only opened in afault condition (over pressure, A/D calibration error, or transducer mismatch). Once a fault is detected,Q202 will remain open until power is cycled. Under normal operation, dual transistor Q203 is used toswitch the pump on and close the valve. The pump-on and valve-close commands are controlled bysoftware. Note that the valve is normally open. Then, in the case of no power, the valve will be in the openstate.

NIBP-Pump-OnNIBP-Valve-Close

NIBP-Safety

+5V +Vpump

Pump-

Valve-

Pump+

Valve+

Q201-B

Q202-GD

201-

A

+12V

Q203MMDF2N02E

81

2

5 67

3

4

R246

31.6

Q201MMBT3904L

31

2R243100K

R24110K

R24210K

D202BAV99L

1

3

2

R2481K

J201

CON5

12345

R2471K

R24010K

Q202MMDF2N02E

81

2

5 67

3

4

5 CRT Deflection Board

5.1 Overview:

Atlas uses a 5-inch monochrome CRT display. This CRT will display Waveform Data (ECG andRespiration or SpO2 orETCO2), plus Text Data (Heart Rate, Alarm Values, Trend Data, setup, andservice menus). The CRT Deflection board performs the following functions:

1. Vertical Deflection.2. Horizontal Deflection.3. CRT Grid Voltages.4. Video Amplifier.

CRT Deflection is magnetic, vertical and horizontal deflection is controlled by regulating current throughthe vertical and horizontal coils of the CRT Yoke. The Deflection board is designed to the followingspecifications:

Resolution: VGA (640X480)Dot Clock: 39.7nSec (1/25.175Mhz)Display Size: 100mm (Horizontal) X 68mm (Vertical)

Vertical: Scan Rate: 60HzReset Time: 750uSec

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Appendix A 10/14/99

Blanking Time: 1.2mSec

Horizontal: Scan Rate: 31.5KhzReset Time: 5uSecBlanking Time: 5.7uSec

5.2 Vertical Amplifier:

5.2.1 Ramp Generator:

+12V+5V

VsyncRampU4.2

U1.2

d6.c

U1.3

C3.047uF

U4A

74HCT04

1 2

R43

5.11K

R521.96K

R27.50K

R11K

R323.7K

C1.1uF

D11N4148

12

D61N4148

12

+

- U1ATLC272

3

21

84

Ramp Generator

750uSec

16.7mSec

Vertical Sync

VerticalSync

16.7mSec

750uSec

3.95Vpp

5.0V

A ramp generator is built from the integrator (U1A, C1, and R3). The slope of the integrator is: V =(I*T)/C. The integrator is designed so that it ramps up 6.97V in 750uS and ramps down 3.95V in 15.9mS.Diode D1 clips the output voltage at about 5.0V (U1-pin3 + Vdiode). Then the ramp resets at 5.0V eachcycle, and integrates down 3.95V.

+5V

+5V

Ramp

q4.b

q3.b

u2.6

u1.5

u2.7

q1.b

vadj

q1.e

u1.6

u1.7

vcadj

vcadj-vcadj+

q2.b

u2.2

+12V+12V

+12V

+12V

Q1MPSW01A

32

1

R17 10

R15 38.3R20169+

-U2A

MC34072

3

21

8

4

R641.2K

R9

1.47K

+ C522uF

R410K

+

-U2BMC34072

5

67

8

4

Q4MPSW51A

32

1

R11

1.96K

C4.047uF R19

562

R18562

R741.2K

R2310K

R13169

+

-

U1BTLC272

5

67

8

4

R841.2K

C2100pf

R2210K

R10 1K

R542.2K

R21562

Q2MPSW51A

32

1

R16 10

Q3MPSW01A

32

1

R12562

R14562

L

Vertical Yoke

Vertical Amplifier

Size Adjust

Zero Adjust

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Appendix A 10/14/99

5.2.2 Vertical Amplifier:

The Vertical amplifier will generate a linear current ramp of +/-200mA. The vertical amplifier is an H-Bridge type driver. Positive current flow (deflecting the beam above the centerline) is defined as currentfrom +12V to Q1 to Rsense through the coil to Q4 to Ground. The negative current path is from +12V toQ3 through the Coil to Rsense to Q2 to Ground.

The input to the vertical amplifier is the ramp voltage generated above. The objective of the vertical ampis to match the current through the vertical coil with the input ramp control voltage. Current through thevertical coil is monitored through the sense resistor, formed from R15, R16, and R17. Voltage across thesense resistor is measured with the differential amplifier U1B. This voltage is then used as the feedbackvoltage to the control opamp, U2A.

5.2.3 Zero Adjust:

The output voltage from the ramp generator is a ramp from 5.0V to 1.05V (nominal). The center of thisramp is 3.0V. Then, the output of the current sense diff amp must be offset by 3.0V. This is accomplishedwith the Zero Adjust Network, Resistors R9, R10, and R11. Vertical centering is then accomplished bywriting a pattern to the CRT, and adjusting R10 to center the display.

Size Adjust:

Adjusting the current through the Vertical Coil changes vertical deflection. The voltage across the senseresistor is:

Vsense = (Vramp-Voffset) / 1.02 (1.02 is the gain of the current sense diff amp)Current through the coil is equal to current through the sense resistor network.

Icoil = Isense = Vsense / RsenseThen, adjusting the value of the sense resistor will change the current through the vertical coil. Verticalgain is then accomplished by writing a pattern to the CRT, and adjusting R16 to set vertical deflection.

5.3 Horizontal Amplifier:

Current through the transformer increases linearly as Transistor Q6 is On (I = VdT/L). When thetransistor opens, the drain voltage kicks up, and the current through the Transformer coil flows throughC9, L2, L3, and the Horizontal Coil to Ground The transformer quickly loses flux (reset time < 5uSec).Current continues to flow in load inductance, from Ground through Q6-diode, C9, L2, L3, and theHorizontal Coil to Ground. This current flow charges capacitor C9. The current decreases linearly to 0,then changes directions. This is due to the AC coupling capacitor C9 being charged to a negative voltage.Current flow is then from Ground through the Horizontal Coil, L2, L3, C9, and Q6 to Ground.

The drive to MOSFET Q6 is AC coupled. This will prevent Q6 to be driven high in the event of a faultydriver on the CPU board.

In order to get adequate deflection current (about +/-2.3Amps), 18.5V across the transformer coil isnecessary. A “boost” winding is added to the transformer, then when the voltage on the transistor drainflys up, current flows into capacitor C11. C11 charges to a voltage determined by the turns ratio in thetransformer.

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Appendix A 10/14/99

5.3.1 Horizontal Gain:

Horizontal deflection is adjusted by changing the current through the Horizontal coil. Changing the seriesinductance in the Horizontal Deflection Path modifies the current. Increasing Horizontal gain is thenaccomplished by writing a pattern to the CRT, and adjusting the “width coil”, L3.

Horizontal Centering:

Horizontal centering is accomplished by rotating magnets mounted on the CRT Yoke assembly.

5.3.2 Grid Voltages:

The following voltages are developed to bias the grids on the CRT:Grid 1: -10V to -50V DC (Brightness Adjust)Grid 2: 350VDCGrid 4: 0V to 350VDC (Focus Adjust)Anode: 7.5KV

These voltages are derived from additional windings on the FBT. In addition, the supply voltage for thevideo amplifier (+36VDC) is generated from a tap on the FBT.

+12V

+12V

+12V

+Vvid

Grid 2

Intensity

Hsync

Focus

+B

hwide

Vg2

d5.c

q5.c

C22-2

Vd

q6.d

Vg1

+12filt

Hor

Grid1

hlin

q5.b

d4.a

Boost

Q6IRF640

2

1

34

C15.01uF

R2710

L215uH

LHorizontal Yoke

D51N4937

1 2

U4B

74HCT04

3 4

C22.022uF

D31N4935

1 2

+ C1222uF

L1

47uH

Q52N3904

32

1

R2410K

C8.022uF

D2

MUR120

1 2

R30100K

C14.01uF

+C101000uF

C16.01uF

R29 100K

R25215

+

C13

22uF

To CRTAnodeT1

CRT-FBT

10

9

7

1

3

5

2

8

R261K

+C111000uF

R2819.6K

R501.96K

R322.5Meg

C96.8uF

D41N4935

12

C17.01uF

L315- 35uH

31.7uSec

Horizontal AmplifierGrid Voltages

5.5uSec

FocusAdjust

Horizontal Sync

BrightnessAdjust

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Appendix A 10/14/99

5.4 Video Amplifier:

The CRT tube turns a dot on when video out is low (near 0V), and off when video out is high (+Vvid =28V). The input to the video amplifier is a digital signal (3.3V logic level) from the uProcessor. An inputof 0V turns the dot off, an input of 3.3V turns the dot on. Transistor Q7 amplifies and inverts this signal.Video out is driven low through D7, and driven high through emitter follower Q8. .

+Vvid

+5V

VideoIn

VideoOut

q8-b

q7-g

q8-e

u4-6

C19.01uFR37

1.96K

Q82N3904

32

1

R361.96K

R5119.6K

U4E

74HCT04

11 10

R48100

D71N4148

12

Q7BS170

12

3

R41681

Video Amplifier

6 Recorder Electronics

6.1 Overview:

Atlas includes a thermal strip chart printer (optional on Model 200 and 210, standard on model 220). Theuser can print either annotated waveform data or Patient trend information.

The printer specifications are:

Paper Size: 56 or 58mm (2 1/4 inches)

Printhead Width: 54mm (2 1/8 inches) Resolution: Vertical: 8 dots/mm, (200 dots/inch)

Horizontal: 12 dots/mm (300 dots/inch)

Chart Speed: 25mm/sec (1 inch/second)

The main CPU controls the printer. Data timing, clock signals, and strobe widths are all generated by theFPGA on the CPU board. These signals are buffered on the recorder board (inverter U5), beforetransmission to the printhead.

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Appendix A 10/14/99

6.2 Power Supply – 24 Switcher

It is necessary to generate 24VDC for the print head and motor. The input to the 24V switcher is either12V from the AC/DC converter, or Battery voltage on the model 210/220 when AC is not present. Thecircuit is configured as a boost PWM using current mode feedback. The PWM controller is a UC3843A.The controller includes an internal 2.5V, 1% reference, and an external 5V, 1% reference. Nominaloutput voltage for the boost converter is Vout = [2.5V*(1 + 84.5K/10K)] = 23.6V.

The converter will run at duty cycles over 50%, which requires slope compensation for a current modecontroller. Slope compensation is added by summing in part of the oscillator signal with the current senseline.

The PWM current limits on a cycle to cycle basis. The supply will be in current limit when the Isense linereaches 1V. Current limit is set to about 3.5 Amps from 12VDC or 5Amps from battery.

Two control signals exist for the 24V switcher, n24Von and Rec-Supply-On. The 24V switcher is disabledwhen n24Von is high. This signal is controlled by the on board PIC processor. The switcher is held off atpower up, and allowed to start after 50mSec. This is done to reduce inrush current at power up. The signalRec-Supply-On enables power to the print head, and is controlled by the main CPU. Power is only appliedto the print head when the recorder is running.

RecVdc

RecVdc

+24V

n24VOn

+24V-switch

U2-

Isen

se

U2-Ref

U2-RT

Q6-e

U2-

out

Q4-

G

U2-comp

Rec-Supply-On Q2-b

Q4-D

U2-fb

Q4-s

A+5V

A

A

A

A

A

A

A

A

A

+12V

A

A

A A

R193.16K

+ C41000uF

TP8

C11.047uF

TP14

L122uH

TP17

R1619.6K

C7.01uF

R224.22K

R1310

C135600pF

Q4MTP30N06VL

23

1

4

R1410K

R170.1

R610K

TP10

Q32N7002

3

1

2

R1210K

TP19

+ C61uF

TP21

C142200pF

R115.11K

R18no-load

Q6MMBT3904L

3

1

2

R15147

TP23

Q2MMBT3904L

31

2

R910K

R1010K

TP9

D2MBRS340T3

U2UC3843A

3

57

14

1

10

812

911

VFB

ISENSERT/CT

VREF

COMP

OUT

PW

R-G

ND

Vcc

GN

DV

c

R784.5K

+ C81800uF

Q1MTP30P06V

2

1

34

R310K

PrintheadPowerSwitch

SwitcherDisable

ToPrinthead

ToMotorRecorder

PowerSupply

6.3 Motor Driver:

Atlas uses a stepper motor to drive the paper. The microcontroller (U3) is programmed to apply theappropriate phased signal to the motor. A quad darlington switch (U6) amplifies the signal from thecontroller to signal levels needed to drive the motor. Motor speed timing is derived from the main CPU,and transmitted to U3 on signal line U3-clk (U2-pin2).

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Appendix A 10/14/99

U3-clk J3-1

u6-11

u6-clmp

J3-3

d6-c

U3-8

U3-10

n24Von u6-14 J3-4

J3-6

U3-9u6-3u6-6

U3-7

A

A

+24V+24V

+5V

DA

D627V

13

R331.47K

U6ULN2065

36

1114

27916

18

1B2B3B4B

1C2C3C4C

CLMP1CLMP2

C19.047uF

TP26

R351.47K

TP29

C18.047uF

TP1

J3

CON6

123456

R361.47K

TP67

+C2047uF

R341.47K

D127V

13

TP28

TP27

U3

PIC16C505

2

5

7

4

3

6

1 14

8

9

10

11

12

13ClkIn/Osc1/RB5

RC5/TOCK1

RC3

Vpp/MCLR/RB3

Clkout/Osc2/RB4

RC4

Vdd

Vss

RC2

RC1

RC0

RB2

RB1

RB0

+

4

Connector Pin #

+

43

+

1

+1phase +2

3

+

6

+

+

6.4 Temperature Amplifier:The printer will print darker as temperature is increased. Print darkness can adjusted by controlling thetime a dot is turned on. A thermistor is included on the printhead. This thermistor is nominally 30K, anddecreases as temperature increases. The output of the temperature amplifier is a function of the thermistorvoltage, Temp = .755*(1+R8/Rtherm). This voltage is digitized (on the main board), and the CPU cancompensate dot width in order to maintain consistent printing over temperature.

Thermistor1

Thermistor2

Temp

U1-1

U1-2

U1-3

A A

+5V

+5V

+5V

A

A

A

R151.1K

TP6

D3

BAV99L

1

3

2

C1.047uF

R21K

TP3

C5 .01uF

TP54

C3.01uF

R8 23.7K

R49.09K

C2.01uF

R51K

+

- U1AMC34072

3

21

84

ThermistorInput

PrintheadTemperatureAmplifier

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Appendix B

Atlas Repair PartsPart Number Description

6200-43E SERVICE MANUAL620001-501 MAIN PCB ASSY - LOW END620004-501 ATLAS CPU PCB ASSY620007-501 FRONT PANEL DISPLAY PCB ASSY620013-501 PRINTER PCB620016-501 MAIN PCB ASSY - MID/HIGH END620032 ETCO2 PCB ASSY620034 ETCO2 CONNECTOR & CABLE620035 NELLCOR SPO2 BD620038 NELLCOR LABEL (CARTON)620105-1 BATTERY DOOR620117 PRINTER DOOR BUTTON620119 LATCH SPO2620125-501 MAIN CASE/HANDLE SET620126-6 BEZEL SET/HIGH HEAT TRANSFER620127 METAL BRACKET FOR PRINT 620131-1 MAIN FOAM620132-2 TOP FOAM620133 BP FOAM620134-501 GEAR ASSY620138-501 PRINTER DOOR ASSY620139-501 PRINTER FRAME ASSE620140-501 MAIN PRINTER ASSY620141 METAL HOUSING - TOP620142-1 METAL HOUSING-BOTTOM (LG)620143 NUT TEMPERATURE620144 BRACKET SPO2620148 GASKET CO2 EXHAUST620149 FITTING,1/16 X 1/8-27 NPT620150-1 AC/DC POWER SUPPLY620159 PRINT HEAD620165 CABLE-CONN TO MAIN BD,ECG620167 CABLE-MAIN BD TO DISPLAY BD620168-1 CABLE ASSY POWER SUPPLY620169-2 CABLE ASSY NELLCOR SENSOR620170 CABLE ASSY NELLCOR620171 CABLE ASSY SPEAKER620172-2 CABLE ASSY AC620173 CABLE-TEMP SENSOR TO MAIN 620175 CABLE ASSY - FAN620176 CABLE ASSY - PRINTER620177 CABLE ASSY - PRINT HEAD620178 CABLE ASSY SP02620182 LABEL - RS232620187-501 PNEUMATIC SUB ASSY620189 4-20 X 5/16 SLT/TORX PN PL ZIN620192 PNEUMATIC CONNECTOR (MACH)620193 NUT, HEX 5/16-32 X.095 PNEUM620194 WASHER,FLT.33 X.62 X.049 620197 BUSHING, SPLIT NYLON620198 FOOT620200-501 CRT SUB ASY

Page 1

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Appendix B

Atlas Repair PartsPart Number Description

620201-501 POWER SUPPLY ASSY (LOW END)620201-502 POWER SUPPLY ASSY W/FAN620202-504 MAIN HSG ASSY W/BATT & PRNTR620205 4-40 X .31 TX PN MC ST ZN620207 NUT, M3-.5 HEX KEPS ST ZN620373-501 NONIN SUB ASSEMBLY620377-1 "NELLCOR WORKS HERE" LABEL620377-2 NELLCOR PATENT LABEL620378-1 ATLAS KEYPAD620378-2 ATLAS KEYPAD620378-3 ATLAS KEYPAD620378-4 ATLAS KEYPAD620378-5 ATLAS KEYPAD620378-6 ATLAS KEYPAD620379-501 MONITOR BOX W/INSERTS620385 SUB-LABEL DISPLAY620386 FASTON TAB620387 SHUNT620388-1 LABEL, NONIN SENSOR620388-2 LABEL, NELLCOR SENSOR620393 PWR SUPPLY INSULATOR LABEL620394-1 WASHER, SHOULDER PLATED620395-501 REPLACEMENT LAMP SUB-ASSY.620402 SPACER, DOOR620403 FLAT TIE HOLDER620524 CABLE-CO2 TO MAIN BD761077-1 TIE WRAP

Page 2

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O

STEPPER MOTOR

PIC-

Vpro

gRe

c-Sup

ply-O

nNo

t Con

necte

dRe

c-Moto

r-Step

+5V

+12V

Rec-D

ata-L

atch

Rec-S

trobe

Rec-C

lock

Rec-D

ataGr

ound

Grou

ndRe

c+DC

VRe

c+DC

VRe

c+DC

VRe

c+DC

VRe

c+DC

VPr

int-T

emp

Rec-G

NDRe

c-GND

Rec-G

NDRe

c-GND

Rec-G

NDRe

c-GND

J3MODEL 'LOW' P3

LITHIUM BATTERY (+)LITHIUM BATTERY (+)

12

J2MODEL 'LOW' P2

LITHIUM BATTERY (-)LITHIUM BATTERY (-)

12

AC+1

2VAC

+12V

AC+1

2VGR

OUND

GROU

NDGR

OUND

+5V

KEY-

CLOC

KON

/OFF

-KEY

KEY-

LATC

H-N

+5V

KEY-

DATA

GROU

NDLE

D DA

TAAC

ON-L

EDLE

D-ON

GROU

NDGR

OUND

GROU

NDLE

D-LA

TCH-

N

PHAS

E 1

+24V

PHAS

E 2

PHAS

E 3

+24V

PHAS

E 4

GRNALL YELLOW

GRN

GRN

BLK

RED

RED

BLK

BLK

RED

ORN

YEL

GRNYEL

BLKWHT

GRNYEL

BLKWHT

BLK

RED

BLU

RED

ORN

RED

SHLD

GRN

COAX

BLK

WHT

ORN

RED

SHLD

GRN

COAX

BLK

WHT

RIBBON CABLE

RIBBON CABLE

RIBBON CABLE

FERRITE

BRN

RED

ORN

YEL

YEL

ORN

RED

BRN

GRN

BRN

BLU

RED

BLK

WHT

ORN

WHT

BLK

RED

BLKRED

ORNWHT

YEL

ORN

SHLD

GRN

COAX

BLK

RED

BLK

RED

YEL

GRN

BLKBLKBLK

REDREDRED

BLK

BLK

BLK

BLK

BLK

RED

RED

RED

ORNGRN

YELRED

BLKORNREDYELBRNREDBLK

5 POSITION JUMPER

5 POSITION JUMPER

6 POSITION JUMPER

FERRITE

FERRITE

ETCO

2-TX

(TO

J4-1

5)ET

CO2-

RX(T

O J4

-17)

GROU

ND+1

2V

J801

CABLE ASSYMOTOR ESD GROUND

CABLE ASSYPRINTHEAD ESD GROUND

Grou

nd

TO POWERSUPPLY CAN

Grou

nd

TO POWERSUPPLY CAN

MOTOR

CABLE ASSYPRINTER

CABLE ASSYNELCOR

CABLE ASSYTEMPERATURE CONNECTOR

LN G

J2 J3 J5 J6 J7 J8 J9

N/C

LED

DRIV

E LIN

ELE

D DR

IVE

LINE

N/C

PHOT

O DI

ODE

SIGN

ALSE

NSOR

TYP

E LIN

ECA

BLE

SHIE

LDSI

GNAL

SHI

ELD

PHOT

O DI

ODE

BIAS

1 2 3 4 5 6 7 8 9

YOKE AND CABLE ASSY

J2

CONT

ACT1

-REL

AYN/

CN/

CRG

NDRX TX RG

NDCO

NTAC

T2-R

ELAY

1 2 3 4 5 6 7 8

P2

P801

Mode

l 'MED

/HIG

H'

P4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60

GROU

NFEK

G-PW

M-AD

CNI

BP-S

AFET

YGR

OUNF

+3.3V

NIBP

-PW

M-AD

C+3

.3VGR

OUND

GROU

NDRS

232-

TXNI

BP-O

VERP

RESS

URE

PIC-

DATA

GROU

NDRS

232-

RXET

CO2-

TXSP

O2-T

XET

CO2-

RXSP

O2-R

XSP

ARE-

2 NC

ADC-

CLOC

KNI

BP-D

ATA

FE-C

LOCK

NIBP

-15m

mHg

SPI-D

ATA-

OUT

LED-

LATC

HSP

I-CLO

CKVI

DEO-

HSYN

CBA

TT-ID

SPAR

E-3 N

CFE

-DAT

APO

WER

-SYN

CRE

C-MO

TOR-

STEP

VBAC

KUP

GROU

NDNI

BP-V

ALVE

-CLO

SEPI

C-CL

KVI

DEO-

VSYN

CSP

EAKE

R-AU

DIO

NIBP

-OFF

SET-

DAC

N/C

AC-O

NNI

BP2-

PW-A

DC (u

nuse

d)N/

CGR

OUND

GROU

NDVI

DEO-

DATA

KEY-

LATC

H-N

GROU

NDRS

232-

CTS

NURS

E-CA

LLRE

C-CL

OCK

REC-

DATA

-LAT

CHRE

C-DA

TARE

C-ST

ROBE

HRES

ETSC

LSP

I-DAT

A-IN

SDC

GROU

NDGR

OUND

YOKE

HORIZONTAL -HORIZONTAL +TUBE GROUNDVERTICAL +VERTICAL -

12345

J2P2

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

PRINT HEAD

RIGH

T-AR

MLE

FT-A

RMLE

FT-L

EGGR

OUND

V-LE

ADRI

GHT-

LEG

1 2 3 4 5 6

ECG

BATT

ERY

BATT

EY-ID

GROU

ND

1 2 3

L N GND

13

CABLE ASSYAC RECEPTACLE

CABLE ASSYCO2

CABLE ASSYNONIN SENSOR

CABLE ASSYNONIN

A/CRECEPTICLE

VALVE

PUMP

CABLE ASSYSPEAKER

CABLE ASSYPOWER SUPPLY

CABLE ASSYFAN

CABLE ASSYPUMP/PNEUTRONICS VALVE

+12VGround

12

1 2 3 4 5 6

CABLE ASSEMBLYPRINT HEAD

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

1 2 3 4

+12V

GROU

NDET

CO2-

Rx(T

O J4

-17)

ETCO

2-Tx

(TO

J4-1

5)

f+V SGND

sSpO

2Tx

SGND

1 2 3 4

VALVE +VALVE -NCPUMP +PUMP -

12345

AC+12VAC+12VAC+12VGROUNDGROUNDGROUNDGROUND

1234567

SPN/CSM

123

WAT

ER T

RAP

SWIT

CHGR

OUND

1 2

1 2 3 4 5 6 7 8 9 10 11 12 13 14

FERRITE

CABLE ASSYDISPLAY

CABLE ASSYBATTERY

FUSE

1 2 3 4

J1 J4 J15

J17

1 2 3 4

ANODE

- +BATTERY

SPEAKER

FAN

SPO2 NONIN CONNECTOR

SPO2 NONIN BOARD

CO2 BOARD

SILENCEBOARD

DISPLAY BOARD 2

CPU BOARD

DEFLECTION BOARD

RECORDER BOARD

DISPLAY BOARD

MAIN BOARD

POWER SUPPLY

CABLE ASSYECG

PIC-

VPRO

GRE

C-SU

PPLY

-ON

N/C

REC-

MOTO

R-ST

EP+5

V+1

2VRE

C-DA

TA-L

ATCH

REC-

STRO

BERE

C-CL

OCK

REC-

DATA

GROU

NDGR

OUND

REC+

DCV

REC+

DCV

REC+

DCV

REC+

DCV

REC+

DCV

PRIN

T-TE

MPRE

C-GN

DRE

C-GN

DRE

C-GN

DRE

C-GN

DRE

C-GN

DRE

C-GN

D

+5V

KEY-

CLOC

KON

/OFF

-KEY

KEY-

LATC

H-N

+5V

KEY-

DATA

GROU

NDLE

D DA

TAAC

ON-L

EDLE

D-ON

GROU

NDGR

OUND

GROU

NDLE

D-LA

TCH-

N

FERRITE

ANOD

E (D

ETEC

TOR)

N/C

N/C

CATH

ODE

(DET

.SHI

ELD)

GROU

ND (R

CAL r

eturn

)RC

AL-L

EDN/

C+L

EDGR

OUND

1 2 3 4 5 6 7 8 9 10

1 2 3 4 5 6 7 8 9 10 11 12 13 14SPO2 NELCOR BOARD

CABLE ASSYNELLCOR SENSOR 1 2 3 4 5 6 7 8 9

RCAL

+LED

-LED

M/C

ANOD

E (D

ETEC

TOR)

GROU

ND (R

CAL R

ETUR

N)GR

OUND

N/C

CATH

ODE

(DET

SHI

ELD)

SPO2 NELLCOR CONNECTOR

J1

MODE

L MED

/HIG

H

J3

J4

J5

J6

J7

J8

J402

J401

J501 J601

J201

J11

1 2TE

MP-IN

GROU

ND

TEMP

1 2 3 4 5 6 7 8 9 10 11 12 13 14

SGND

SGND

SGND

SPO2

-RES

ETSG

NDN/

CS-

5VSS

pO2-

TXN/

CS+

5VSG

NDSG

NDIS

O+5V

digSG

ND

CO2RECEIVER

ETCO2 CONNECTORWITH SWITCH

+12V

VIDE

O-VS

YNC

VIDE

O-HS

YNC

GROU

NDVI

DEO-

DATA

GROU

ND

1 2 3 4 5 6 7 8 9 10 11 12 13 14

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

+24V

-SW

ITCH

+24V

-SW

ITCH

THER

MIST

OR-1

THER

MIST

OR-2

STRO

BEGR

OUND

GROU

NDGR

OUND

GROU

ND+5

VST

ROBE

LATC

HCL

OCK

DATA

+24V

-SW

ITCH

+24V

-SW

ITCH

1 2 3 4 5 6

P401

P402

P1

P5

P11

P201

P7

P8

P6

P3

P2

P601

P501

INTENSITY+12VVIDEOGROUNDGRID 2FOCUS

123456

J3P3

+5VSILENCE-LEDSILENCE-SWITCHGROUNDGROUND

12345

J3 P3

TRENDLEAD-SELECTPRINTACON-LEDGROUND

12345

J2P2

CABLE ASSYSPO2 ESD GROUND

PHASE 1+24VPHASE 2PHASE 3+24VPHASE 4

123456

J3 P3

1 2 3 4 5 6

N/C

N/C

+5V

GROU

NDRX TX N/

CN/

C

1 2 3 4 5 6 7 8J10-

Mode

l 'LOW

'

SGND

1J4

03P4

03

IN-LINE FUSE

GNDATTACHED TO PS CANWITH SCREW

GND ATTACHEDTO PCA WITHFASTON

GNDATTACHED TO SPO2 BRACKETWITH SCREW

SGND

SGND

SGND

SPO2

-RES

ETSG

NDN/

CS-

5VSS

pO2-

TxN/

CS+

5VSG

NDSG

NDIS

O+5V

DIG

SGND

+24V

-SW

ITCH

+24V

-SW

ITCH

THER

MIST

OR-1

THER

MIST

OR-2

STRO

BEGR

OUND

GROU

NDGR

OUND

GROU

ND+5

VST

ROBE

LATC

HCL

OCK

DATA

+24V

-SW

ITCH

+24V

-SW

ITCH

N/C

LED

DRIV

E LIN

ELE

D DR

IVE

LINE

N/C

PHOT

O DI

ODE

SIGN

ALSE

NSOR

TYP

E LIN

ECA

BLE

SHIE

LDSI

GNAL

SHI

ELD

PHOT

O DI

ODE

BIAS

P2

X3 RELEASE TO PRODUCTION - - - -

JB ENGEL 07/21/99

- - -

- - -

- - INTERCONNECTDIAGRAMPRO-E

ME-10

620396 X3NONE SHEET 1 of 1

B

CKDDATEINITECN/ECODESCRIPTIONREV

REL TO PROD

APPROVED

THESE DRAWINGS AND SPECIFICATIONS AR E THE PROPERTY OF WELCH ALLYN, INC.AND SHALL NOT BE REPRODUCED, OR COPI ED, OR USED AS A BASIS FOR MANUFACTU REOR SALE OF EQUIPMENT OR DEVICES WITH OUT WRITTEN PERMISSION.

TRANSLATED FROM:CAD SOFTWARE:

SCALE

REVDRAWING NO.

TITLE

FINISH:

MATERIAL:

DATE

DATE

DATEDRAWN

F

E

D

C

A

2345678

B

1

7 6 5 4 3 2 18

F

E

D

C

B

A

TOLERANCES.XX = ` .02.XXX = ` .005ANGLES ` 2

DIMENSIONS ARE IN INCHES

UNLESS OTHERWISE SPECIFIED

TM

Page 108: Welch Allyn Medical Division - frankshospitalworkshop.comfrankshospitalworkshop.com/.../WelchAllyn_Atlas... · Atlas Operator’s Manual, contact: Customer Service Welch Allyn, Inc.

Atlas Drawings and Schematics

Drawing Number Rev. Sheet No. Size Name Description620002 C 1of 6 C Main Board - Model 200 Schematic620002 C 2 of 6 C NIBP Electronics Schematic620002 C 3 of 6 C Power Supply DC/DC Schematic620002 C 4 of 6 C Power Isolation and Sp02 Interface Schematic620002 C 5 of 6 C ECG AMP Schematic620002 C 6 of 6 C ECG A/D Interface Schematic620005 C 1 of 6 C Atlas CPU Sub System Connector/Header Detail Test Points620005 C 2 of 6 C FPGA U7 Detail620005 C 3 of 6 C I/O Filters Schematic620005 C 4 of 6 C Flash, SDRAM 8 HRESET Config Word Schematic620005 C 5 of 6 C Power PC MP C823 CPU Schematic620005 C 6 of 6 C Power Distribution Schematic620008 B 1 of 5 C Front Panel Display Board Schematic620008 B 2 of 5 C Keyboard Scanner Schematic620008 B 3 of 5 C Temp/Pulse LED Drivers Schematic620008 B 4 of 5 C NIBP LED Drivers Schematic620008 B 5 of 5 C Sp02 LED Drivers Schematic620011 C 1 of 1 C CRT Deflection Board Schematic620014 B 1 of 1 C Printer Electronics Schematic620017 D 1 of 8 C Main Board - Model 220 Schematic620017 D 2 of 8 C NIBP Electronics Schematic620017 D 3 of 8 C DC/DC Power Supply Schematic620017 D 4 of 8 C Power Isolation and Sp02 Interface Schematic620017 D 5 of 8 C ECG AMP Schematic620017 D 5 of 8 C ECG A/D Interface Schematic620017 D 7 of 8 C Respiration Schematic620017 D 8 of 8 C Serial Communication Schematic620020 A 1 of 1 C Transformer Isolator Component Schematic620027 B 1 of 1 C ECG Patient Cable Component Schematic620201 A 1 of 1 C Power Supply Sub Assembly Exploded View of Sub Assembly620032 B 1 of 1 B ETC02 PCB Assembly Isometric View of ETCO2 PCB620150 B 1 of 1 B Power Supply 50W Performance Specification

620154/1255210 B 1 of 1 B Assy, Nonin Sp02 Board with Shield Code for Rev Level of Firmware/Software620152 A 1 of 1 B Motor Stepper Motor Schematics and Values620156 B 1 of 1 B Pump, Pneumatic Valves620165 A 1 of 1 B Cable Assembly ECG Cable Pinout620166 C 1 of 1 B Cable Assembly CO2 Cable Pinout620169 C 1 of 1 B Cable Assembly Nellcor Sensor Cable Pinout620187 B 1 of 1 B Pneumatic Sub Assembly Exploded View of Pneumatic Sub620524 A 1 of 1 B Cable Assembly CO2 Cable Pinout

Page 1

Page 109: Welch Allyn Medical Division - frankshospitalworkshop.comfrankshospitalworkshop.com/.../WelchAllyn_Atlas... · Atlas Operator’s Manual, contact: Customer Service Welch Allyn, Inc.

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

AC/DC PowerConnector

Front PanelDisplayConnector

Main PCAConnector

BackupBattery

RecorderBoardConnector

CRT BoardConnector

3V Lithium

Speaker Drive

SerialDataOut

4Vpp max.

NIBP - Page 2

Serial I/Oconnector

Model 200 Serial I/O

(manufacturing test

only)

FanConnector

Page3

Page2

Page1

Rick Myers

Rick Myers

Mar 5, 1999

Mar 5, 1999

620002.dsn

5-39118 JAC 3/15/99 LPP

L.Phillips

Z. Psenicnik

J. Bello

3/16/99

3/16/99

3/17/99

B See ECN worksheetACminimumload

RecorderESD Ground

C Improvements for ESDand Fast Transients

5-39456 4/27/99LPP LPP

5-39822 LPP LPP6/23/99

DMods to U2 clock line,NVRAM pullup

Jumper wirefrom J4-20 toJ4-55

5-39934 LPP 7/9/99

620002 D

Main Board - Model 200

C

1 6Friday, July 09, 1999

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

U7-wc

FE-Data

R17-1

Power-SyncSpare-3

NIBP-15mmHg

Spare-2

+3.3V

FE-Data

ETCO2-Tx

Video-Data

SCD

SPO2-Tx

NIBP-Safety

SCD

Video-Data

HRESET

NIBP-OP

Video-VSync

Video-HSyncVideo-VSync

Video-HSync

NIBP-PWM-ADC

NIBP-Valve-Close

NIBP-Offset-DAC

Vbackup

ETCO2-Rx

Batt-ID

Power-Sync

EKG-PWM-ADC

Q1-e

PIC-Clk

PIC-Data

NIBP2-PW-ADC

Q2-c

q4-d

Q2-b

Nurse-Call

LED-Latch-b

SPO2-Rx

U8-6

RS232-RX

SM

FE-Clock

U9-3

LED-Data-b

Audio-Shutdown

Rec-Data

NIBP-Data

RS232-Rx

U8-5

LED-Latch

LED-Latch

ADC-Clock

Rec-Strobe

Audio-Shutdown

Key-Data

Tx

Rec-Data-Latch

Rec-Supply-On

U9-4

Rec-Motor-Step

Rec-Clock

EKG-ADC-Clock

SP

Rec-Motor-Step

EKG-Data-Clock

RS232-Tx

Rx

U8-4

Rec-Strobe

Rec-Data

Key-Latch-n-bKey-Clock-b

SPO2-Rx

AC

ON

-LE

D

U8-2

U8-1

Rec-Clock

SPI-data-in

Rec-Data-Latch

U8-3

EROM-wr

LED-On

Speaker-Audio

SCL

Key-Latch-n

Key-Clock

SPI-Data-Out

LED-Data

SPI-Clock

Key-Latch-n

LED-On

Vbackup

Rec+12V

FE-PWM-ADC

FE-ADC-Clock

FE-Data-In

+12V

+12V

Print-Temp

Rec-GND

filt+12V

ACON

NIBP-15mmHgNIBP-Safety

NIBP-PWM-ADCNIBP-Offset-DAC

NIBP-ADC-Clock

NIBP-Overpressure

NIBP-A/D-SelA

SpO2OutNIBP-Valve-Close

NIBP-Pump-On

NIBP-A/D-SelBNIBP-A/D-SelC

FE-Pwr-Sync

PIC-Clk

ac-on

+12V

LithMeas

+3.3V

U2-ResetBackupBattery

AC+12V

Rec+12V

Rec-GND

HRESET

PIC-Data

PIC-Vprog

Rec-clock

Rec-Data

On/Off-Key

ac-on

+5V

Speaker-Audio

FE-Data-Clock

Rec-GND

+5V

+5V

+5V

+5V

+3.3V

A

D

D

D

D

D

D

D

D

D

D D

D

D

D

D

D

DD

D

D

DD

+12V

+5V

D

D

D

D

D

D

D

D

+3.3V

D

D

+5V

D

+5V

+5V

+5V

+5V

+5V+5V

+5V

+5V

+5V

+5V

D

+3.3V

D

J1

CON7

1234567

C3220pF

J9

Tab-.187

12

U1B74HCT04

3 4

147

U3B74HCT08

4

56

147

R2210K

C320.1uF

C370.1uF

U1C74HCT04

56

147

+ C7330uF

+ C4330uF

C33

0.1uF

+

-

U9TPA301

3

4

1 672

8

5

Q32N7002

3

1

2

TP8

TP7

R2110K

J4

Socket 30x2

13579

11131517192123252729313335373941434547495153555759

24681012141618202224262830323436384042444648505254565860

1357911131517192123252729313335373941434547495153555759

2468

1012141618202224262830323436384042444648505254565860

U3C74HCT08

9

108

147

R21.96K

TP18

R1919.6K

R410K

J8CON14AP

135791113

2468

101214

+++++++

+++++++

TP9

J7

CON24B

123456789101112

131415161718192021222324

U274HCT595

14

1110

1213

151234567

9

168

SER

SRCLKSRCLR

RCLKG

QAQBQCQDQEQFQGQH

QH

VC

CG

ND

TP10

C22.047uF

TP17

C39.047uF

J6

CON6

123456

C8.047uF

TP23

U3A74HCT08

1

23

147

+

C364.7uF

C1.047uF

Q2MMBT3904L

3

1

2

C14.047uF

U1A74HCT04

12

147

TP16

C20.047uF

U3D74HCT08

12

1311

147

R151.96K

J5

CON2

12

C23.047uF

BT1BR-2/3A

C29.047uF

R163.48K

TP15

TP19

TP1

TP14

TP13

TP2

J11

CON3

123

TP22

J10

RJ-45

12345678

TP12

TP3

TP20R310K

TP11

TP4

TP21

C340.1uF

R5 1.21K

R110K

U1F74HCT04

13 12

147

J3

CON2

12

C38220pF

R6 1.21K

U8SP232ACN

129

1110

134526

138147

1615

R1OUTR2OUTT1INT2IN

C+C1-C2+C2-V+V-

R1INR2IN

T1OUTT2OUT

VC

CG

ND

Q1MMBT3906L

3

1

2

J2

CON2

12

R2310K

U1D74HCT04

9 8

147

+

C3010uF

U1E74HCT04

11 10

147

C5 .047uF

U7AT24C02N-10SC-2.7

123

6

7

5

84

A0A1A2

SCL

WC

SDA

VC

CG

ND

TP25

R7150

Q4

2N7002

31

2

TP5

+

C354.7uF

R1719.6K

R18619

C310.1uF

C2.047uF

TP6

TP24

R20215

Page 110: Welch Allyn Medical Division - frankshospitalworkshop.comfrankshospitalworkshop.com/.../WelchAllyn_Atlas... · Atlas Operator’s Manual, contact: Customer Service Welch Allyn, Inc.

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

+6V Buck(5.68V nominal)

On/Off Switch

Page 1

Rick Myers

Rick Myers

Mar 5, 1999

Mar 5, 1999

620002.dsn

5-39118 JAC 3/15/99 LPP

L.Phillips

Z. Psenicnik

J. Bello

3/16/99

3/16/99

3/17/99

B See ECN worksheet

C Improvements for ESDand Fast Transients

4/27/995-39456 LPP LPP

5-39822 LPP LPP6/23/99

Mods to U2 clock line,NVRAM pullupD 5-39934 LPP 7/9/99

REV Description ECN/ECO Init Date Ckd

A Release to Production

620002 D

Power Supply - DC/DC

C

3 6Friday, July 09, 1999

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

U30

1-ou

t

Q30

3-b

U301-fb

Q303-c

C311-1

Q304-e

U301-osc

U301-5

U301-comp

Q305-g

u304-fb

up-reset

PIC-audio

Q305-s

d304-1

d304-2Q30

1-G

C328-1

On-Off

Q302-B

ACON

5Vref

+5V

+6V

+3.3V

filt+12V

+12V

Vb

VBackup

BackupBattery

PIC-Clk

Speaker-Audio

HRESET

U2-Reset

PIC-Vprog

Rec-Data

Rec-Clock

On/Off-Key

PIC-Data

AC+12V

D

D

D

D D

D

D

D

D

D

DD

TP312

U302LM2940CT-5.0

1 3

2

IN OUT

GN

D

R31310

U303LF33CV

1 3

2

IN OUT

GN

D

C305.01uF

R30910K

+ C31610uF

D304MMBD354LT1

1

3

2

+ C3234.7uF

D301BAV99L

1

3

2

Q3062N7002

3

1

2

C320.047uF

+ C3244.7uF

TP308

+ C306330uF

+ C314330uF

Q304MMBT3904L3

1

2

R3101.96K

TP301

TP315

C307.047uF

+ C319100uF

R319 19.6K

TP304

R302100K

C322.047uF

+ C3021uF

R316100

R30151.1K

R314100

Q302MMBT3904L

3

1

2

TP306

TP313

TP302

+ C304330uF

L30247uH

Q303MMBT3904L

3

1

2

C303.01uF

Q305MTP23P06V

2

1

34

TP309

TP317

C3112200pF

U301UC3843A

3

57

14

1

10

812

911

VFB

ISENSERT/CT

VREF

COMP

OUT

PW

R-G

ND

Vcc

GN

DV

c

TP316

R305100K

U304

LP2951CD-3.3

873

62

15

4

VINFDBKSHTDN

TAPSENS

VOUTERR

GN

D

TP305

R31810K

R3077.5K

R320 1.62K

R3121.96K

D303

MBRS340

R304127K

TP26

C321.047uF

U305

D620361-MX10000

2

5

7

4

3

6

1 14

8

9

10

11

12

13ClkIn/Osc1/RB5

TC5/TOCK1

RC3

Vpp/MCLR/RB3

Clkout/Osc2/RB4

RC4

Vdd

Vss

RC2

RC1

RC0

RB2

RB1

RB0

R31110K

R30310K

C325.047uF

TP303

TP320

+ C3151uF

R30610K

Q301

MTP23P06V

2

1

34

C313.047uF

TP321

TP27

TP310

C317.047uF

C3102200pF

TP318

L30147uH

R30827.4K

+C3011000uF

C326.047uF

TP319

TP307

D305NO LOAD

1

3

2

C327.047uF

+C3281uF

C309.047uF

Page 111: Welch Allyn Medical Division - frankshospitalworkshop.comfrankshospitalworkshop.com/.../WelchAllyn_Atlas... · Atlas Operator’s Manual, contact: Customer Service Welch Allyn, Inc.

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

A/D Mux

Zero Adjust+/-20mmHg range

0mmHG = 0.5V 300mmHG = 4.0V

PWM D/A76.8KHz

PrimaryTransducer

NIBP PWMA/D Converter

ZeroOffset

SafetyTransducer

Over PressureFault Circuit

Rick Myers

Rick Myers

Mar 5, 1999

Mar 5, 1999

620002.dsn

5-39118 JAC 3/15/99 LPP

L.Phillips

Z. Psenicnik

J. Bello

3/16/99

3/16/99

3/17/99

B See ECN worksheet

C Improvements for ESDand Fast Transients

LPP LPP5-39456 4/27/99

6/23/99LPP LPP5-39822

Mods to U2 clock line,NVRAM pullupD 7/9/99LPP5-39934

620002 D

NIBP Electronics

C

2 6Friday, July 09, 1999

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

D201-C

U208-2

U210-7

U204-7

U204-5

U203-3

U203-5

C207-1

U204-3

U204-2

U205-7

U206-6

U206-1

P202-Out-U206-7

U206-2

U202-3

P202-2

P202-5

Q202-G

Q202-D

U202-5

U208-1

u207-9

PrimaryPres

P4.25V

SafetyPres

U208-3

P201-Out

P201-6

U204-1

U208-7

U209-Out

U203-6

P202-Out+

U210-2

U210-3

U203-2

Pump+

D20

1-A

Q201-B

Valve-Valve+

Pump-

P.75V

+5V/2

U205-3

U207-3

P201-pwr

P+5V

NIBP-Offset-DAC

NIBP-Pump-On

NIBP-ADC-Clock

P+5V

P+5V

P+5V

P+.75V

NIBP-Safety

P+5V

P+5V

P+5V

NIBP-PWM-ADC

NIBP-Valve-Close

P+12V

5VRef

P+5V

NIBP-Overpressure

NIBP-15mmHg

NIBP-A/D-SelB

P+5V

+12V

+5V

P+.75V

+6V

NIBP-A/D-SelA

NIBP-A/D-SelC

LithMeas

P+5V

Print-Temp

P+12V

P+12V

P+12V

P+12V

P+12V

+5V

+5V

P+12V

P+12V

P+12V

P+12V

P+12V

P+12V

+12V

P+12V

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

+

- U203ALM393

3

21

84

C215.047uF

+

-

U202AMC34072

3

21

84

C225.047uF

C2241000pF

TP214

R2333.48K

+

-

U208AMC34072

3

21

84

TP206

R2213.16K

C213.01uF

Q202MMFT2N02EL

23

1

4

R23210K

+ C2024.7uF

R24210K

R23010K

C222.01uF

+

-

U205BMC34072

5

67

84

R23173.2K

TP217

Q201MMBT3904L

3

1

2

+

-

U206BMC34072

5

67

84

C223.01uF

TP225

D202BAV99L

1

3

2

R24010K

R2353.48K

R2291.96K

+

- U203BLM393

5

67

84

R24110K

R237464K

D201MMBD1503A

1

3

2

L201220uH

TP228

C220

.01uF

R243100K

+

-

U202BMC34072

5

67

84

Gain

and

Comp

XFPM-050KPGR-P1P201

1

2

3

6

TP207

U207B74HCT00

4

56

147

TP231

TP210

+

-U210MAX941

2

3

61 4

7

5

TP211

TP201

C201.047uF

+C22910uF

TP237

C212680pF

TP240

TP232

C221.047uF

TP204

TP234

C205

.047uF

R21410K

C228.047uF

C209.047uF

TP226

C232.047uF

R2191.96K

C211

.047uF

R24631.6

C226.047uF

C216.047uF

R215100K

U207A74HCT00

1

23

147

C204.047uF

TP221

C227680pF

TP222

+C2081uF

R21619.6K

+

-

U204BMC34072

5

67

84

U20178L05

8 1

2 3 6 7

IN OUT

GN

D

GN

D

GN

D

GN

D

R2391K

+

-

U204AMC34072

3

21

84

R201576

C203

.047uF

TP235

TP224

R2033.32K

R205750

C231.01uF

C210.047uF

TP212

TP208

R24438.3K

TP213

C206.022uF

R2481K

TP215

R2491K

TP220

L202Bead

+

-

U208BMC34072

5

67

84

R2275.11K

TP219

J201

CON5

12345

R2363.83K

R22321.5K

R2221K

U207C74HCT00

9

108

147

R228

1.96K

R2241K

C230.047uF

U207D74HCT00

12

1311

147

TP236

R2251K

+

-

U205AMC34072

3

21

84

TP202

R2111.96K

R22621.5K

R2081.96K

C217

.047uF

-+

FPNS-07PGRP2022

13

5

6

+C2184.7uF

C219.047uF

TP209

R204150

R21823.7K

R202174

+ C2071uF

R2175.62K

R21256.2K

R2343.48K

+

-

U206AMC34072

3

21

84

R213237K

Q203MMDF2N02E

81

2

5 67

3

4

R2091K

TP227

TP216

R207464K

TP229

R220806

R210464K

U2094051

131415121524

611109

3

168 7

X0X1X2X3X4X5X6X7

INHABC

XVD

DV

SS

VE

E

TP233

TP238

TP203

R2061K

TP230

TP218

C214.047uF

Page 112: Welch Allyn Medical Division - frankshospitalworkshop.comfrankshospitalworkshop.com/.../WelchAllyn_Atlas... · Atlas Operator’s Manual, contact: Customer Service Welch Allyn, Inc.

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

IsolationBarrier

Isolated SpO2Circuits

Grounded SpO2Circuits

Rick Myers

Rick Myers

Mar 5, 1999

Mar 5, 1999

620002.dsn

5-39118 JAC 3/15/99 LPP

L.Phillips

Z. Psenicnik

J. Bello

3/16/99

3/16/99

3/17/99

B See ECN worksheet

SpO2 ESDGround

C Improvements for ESDand Fast Transients

LPP LPP4/27/995-39456

6/23/99LPP LPP5-39822

Mods to U2 clock line,NVRAM pullupD 7/9/99LPP5-39934

620002 D

Power Iso and SpO2 interface

C

4 6Friday, July 09, 1999

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

T401-8

U402-1

C409-1

T401-4

T401-1

Q40

1-g

U402-sen

iso401-a

Q40

2-e

Q401-s

U401-1U401-2

U401-7

sSpO2tx

Q403-e

sSpO2tx

U401-5

U402-e

U402-ref

U402-ctU402-rt

iso402-a

U403-7

C421-1

U401-3

C408-2

iso401-b

opto-fb

u411-6

FE-Pwr-Sync

SpO2Out

+5V

filt+12V

+12V

iso+5Vdig

fVcc

fVcc

f+5V

+5V

fVcc

fVee

iso+5Vdig

iso+5Vdig

fVcc

S

S

S

S

S

iso+5Vdig

S

S

S

S

S

S

S

S

EED

ED

ED

S

SS

S

S

S

C4231000pF

J403

Tab-.187

12

TP424

TP402

R405215

C404.047uF

C409470pf

TP408

R4146.19K

C4112200pF

TP419

TP406

C401.047uF

R4209.09K

TP421

TP413

Q401MTD3055V

23

1

4

J401

CON4

1234

+ C418

4.7uF

TP412

TP407

C416.047uF

+C4151uF

R415100

TP422

TP409

R419215

+

-U401BMC34072

5

67

84

C403.047uF

C421470pf

R41710K

+C406100uF

R412511

+C407100uF

R404

316K

TP401

+

-

U401AMC34072

3

21

84

D401

MBRS130T3

TP415

TP420

+C405100uF

TP404

D403

MBRS130T3

TP405

C402.047uF

C420.047uF

R4115.11K

R40710

TP416

U403LP2951C

873

62

15

4

VINFDBK

SHTDN

TAPSENS

VOUTERR

GN

D

D405BAV99L

1

3

2

R4031K

R40110K

R4095.11K

TP411

+ C41910uF

C417680pf

R408100

R4185.11K

C410.01uF

TP423

C413.047uF

R4060.2

C414.047uF

C422.047uF

TP403

R41010K

U4104N25

1 6

2

5

4

TP414

U402

LM3524DM

12

16

15

945

10

67

12111314

3

8

V-V+

VREF

VIN

COMP+SENSE-SENSE

SHTDWN

RTCT

CAEACBEB

OSCOUT

GN

D

+ C41210uF

Q402MMBT3906L

3

1

2

C408.01uf

T401

IsoXfmr

5

8

1

2

3

4

R40210K

Q403MMBT3904L

3

1

2

R41610K

R42110K

U411HCNW4503

2

3

8

6

5

TP417

Page 113: Welch Allyn Medical Division - frankshospitalworkshop.comfrankshospitalworkshop.com/.../WelchAllyn_Atlas... · Atlas Operator’s Manual, contact: Customer Service Welch Allyn, Inc.

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

0.1%

0.1%

0.1%

0.1%

0.1%

0.1%

0.1%

0.1%

0.1%

0.1%

Defib ProtectRFI Filtering

Input BuffersGain = 9.26

WilsonNetwork

Lead Select

Diff AmpGain = 1

High Pass (0.05Hz or 0.5Hz)Low Pass (150Hz)

Gain StageGain = 74

RLD Amp

A/D InputsLeads Off

U501 U502 U503 U504 U505 U506 U507 U508

Shield0.1% 0.1%

Rick Myers

Rick Myers

Mar 5, 1999

Mar 5, 1999

620002.dsn

5-39118 JAC 3/15/99 LPP

L.Phillips

Z. Psenicnik

J. Bello

3/16/99

3/16/99

3/17/99

B See ECN worksheet

C Improvements for ESDand Fast Transients

5-39456 LPP LPP4/27/99

5-39822 LPP6/23/99LPP

Mods to U2 clock line,NVRAM pullupD 5-39934 LPP 7/9/99

620002 D

ECG Amp

C

5 6Friday, July 09, 1999

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

U501-6

U502-3

U502-2

U502-5

U503-2

Right-Arm

aVRaVLaVF

LA

LA

LLLL

LALLV+

RA

RA

RA mux-

mux+diff+ U508-2

U508-3

Q504-d

diff-

ecg-hp

D503-3

-clamp

+clamp

D502-3 U501-5

U501-2

U503-5

R509-1

R511-1

R513-1

R515-1

Left-Arm

Left-Leg

V-Lead

Right-Leg

U501-3

Q504-s

Q504-g

U502-6

D504-3

V-

U508-5

U508-6

C514-2

diff-out

U50

8-1

u509-4

D501-3

D505-3

RL-mux

Q50

1-S

Mux-LdS-A

Sw-MonBw

Mux-LdS-B

Mux-LdS-C

RA

LA

LL

V+

VLdsOff

VLdsOff

VLdsOff

VLdsOff

VLdsOff

f+1.24V

fVcc

fVee

f+5V

vRL

Sw-RLD-LL

Sw-RLD-RL

An-ECG

Sw-RLD-RA

Sw-RLD-LA

Sw-RLD-V

fVcc

fVccfVee

fVcc

fVee

fVee

fVcc

EEE

E E E

E

E

E

E

E

E

E

E

EE

E

E

E

E

E E E E E

EEEEE

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

S

S

S

S

S

fVcc

fVee

fVee

fVeefVee

fVcc

fVee

fVee

fVee

fVcc

fVcc

fVee

fVcc

fVcc

fVcc

fVee

fVcc

fVcc

fVee

fVee

fVcc

E

fVcc

fVee

E

E

R50610K

C520.047uF

TP542

R55922Meg

R51710K

R50710K

R55530.1K

C530.047uF

C525.047uF

TP505

+

-

U507BMC34002

5

67

84

R556

10K

C526.047uF

C506220pF

+

-

U507AMC34002

3

21

84

TP539

C528.047uF

N501LAMP NEON

Q5042N7002

3

1

2

R54410K

R50151.1K

TP501

C532.047uF

D502MMBD1503A

1

3

2

C501220pF

C527.047uF

TP538

R54710K

C531.047uF

R50810K

C536.01uF

R549110K

TP540

TP524

C533.047uF

TP518

TP530

R5521K

TP509

R56022Meg

C529.047uF

R55173.2K

TP551

R50922Meg

TP502

D503MMBD1503A

1

3

2

N502LAMP NEON

TP517

R52610K

C507220pF

TP533

C517.01uF

TP521

R50251.1K

C5441000pF

C502220pF

Q5062N7002

3

1

2

+

-

U501AMC34002

3

21

84

R51010K

TP562

TP513TP511

R51910K

TP558

+

-

U502BMC34002

5

67

84

TP543

R5201.21K

+

-

U508BAD712

5

67

84

R51122Meg

R5481Meg

N503LAMP NEON C515

3.3uFC508220pF

TP560

TP514

R55722Meg

R55019.6K

TP549

TP550

D501MMBD1503A

1

3

2

R50351.1K

-

+U509LMC7101

4

31

25

C542220pF

TP515

TP503

D504MMBD1503A

1

3

2

C503220pF TP531

TP537

R51210K

TP527

+ C5354.7uF

TP512

Q5022N7002

3

1

2

+ C5344.7uF

C523.047uF

TP519

C519.047uF

R52110K

R54510K

TP510

R51322Meg

TP523

R52310K

TP536

J501CON6

123456

R553100K

TP504

R51410K

C504220pF

R565121K

U504

DG202CSE

31

1416

119

68

1345

2

15

10

7

S1IN1

S2IN2

S3IN3

S4IN4

V+V-GND

D1

D2

D3

D4

R5241.21K

TP508

R51522Meg

D506BAV99L

1

3

2

TP535

N504LAMP NEON

D507BAV99L

1

3

2

TP520

R5181.21K

+

-

U503AMC34002

3

21

84

R50451.1K

C543.047uF

R5221.21K

TP522

C509220pF

TP557

TP547

+

-

U501BMC34002

5

67

84

TP526

C510220pF

+

-

U503BMC34002

5

67

84

C511220pF

N505LAMP NEON

TP559

C512220pF

TP507

C513220pF

+

- U508AAD712

3

21

84

D505BAV99L

1

3

2

R516

10K

+

-

U502AMC34002

3

21

84

R50551.1K

R530 10K

C505220pF

R531 10K

C5451000pF

TP532

R55822Meg

R533 10K

R5271K

R535 10K

TP506

C5140.1uF

Q5012N7002

3

1

2

TP525

R536 10K

C516.047uF

R52851.1K

TP552

R537 10K

TP516

R52510K

TP548

C518.047uF

R532 10K

R529 10K

C522.047uF

C521.047uF

R534 10K

TP529

U5054051

131415121524

611109

3

168 7

X0X1X2X3X4X5X6X7

INHABC

X

VD

DV

SS

VE

E

C524.047uF

R54610K

TP528

U5064051

131415121524

611109

3

168 7

X0X1X2X3X4X5X6X7

INHABC

X

VD

DV

SS

VE

E

Page 114: Welch Allyn Medical Division - frankshospitalworkshop.comfrankshospitalworkshop.com/.../WelchAllyn_Atlas... · Atlas Operator’s Manual, contact: Customer Service Welch Allyn, Inc.

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

U601

PWM A/DConverter

U602

781uSec

-5V

(U604-10)

IntegratorInput

A/D Mux

U603

+5V

(U604-8)

Serial/ParallelControl Data

PWM-Out

ComparatorInputs

PWM-timer

U601

IsolationBarrier

U603

52uSec

Analog In

U602

U604

Rick Myers

Rick Myers

Mar 5, 1999

Mar 5, 1999

620002.dsn

5-39118 JAC 3/15/99 LPP

L.Phillips

Z. Psenicnik

J. Bello

3/16/99

3/16/99

3/17/99

B See ECN worksheet

C Improvements for ESDand Fast Transients

4/27/995-39456 LPP LPP

LPP LPP5-39822 6/23/99

Mods to U2 clock line,NVRAM pullupD 7/9/995-39934 LPP

620002 D

ECG A/D and Interface

C

6 6Friday, July 09, 1999

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

U601-1

U60

3out

Mux-A/D-B

U60

2-7

U601-2

U604-4

U60

2-2

U60

2-5

iso601-a

Mux-A/D-C

Mux-A/D-A

U601-3

iso602-a

U60

4-8

U601-7

Q60

1-e

U604-6

D601-2

U604-10

Sw-DiagBw

U605-out

iso604-a

iso603-a

u604

-3

U602-3

SW-RL-V

U604-2 U613-6U60

4-1

U612-6

U611-6U60

4-5

U605-12

U610-6

Sw-RLD-RL

f+1.24V

An-ECG

LL

Mux-LdS-B

LA

Sw-RLD-RA

FE-PWM-ADC

Sw-RLD-LL

FE-ADC-Clock

Mux-LdS-A

RA

V+

Mux-LdS-C

Sw-RLD-LA

vRL

fVcc

iso+5Vdig

f+1.24VSw-MonBw

FE-Data-In

FE-Data-Clock

+5V

+5V

Sw-RLD-V

fVee

f+5V

f+1.24V

E

E

f+5V

f+5V

f+5V

ED

+5V

ED

E

E

fVee

E E

fVcc

ED

E

f+5V

fVcc

E

E

+5V

f+5V

E

E

E

ED

E

E

fVcc

iso+5Vdig

fVcc

E

ED

E

fVee

fVee

fVcc

fVcc

fVcc

iso+5Vdig

iso+5Vdig

ED

iso+5Vdig

iso+5Vdig

EDiso+5Vdig

ED

ED

ED

fVcc

fVee

E E

fVee

E E

E

fVee

ED

ED

f+5V

f+5V

ED

ED

TP615

TP622

TP608

U60674HCT595

14

1110

1213

151234567

9

168

SER

SRCLKSRCLR

RCLKG

QAQBQCQDQEQFQGQH

QH

VC

CG

ND

U604F74HCT04

13 12

147

TP601

C6371000pF

TP609

TP602 U604A74HCT04

12

147

R62346.4K

R60410K

C624.047uF

C636100pF

C634220pF

C6410.1uF

R60346.4K

R60110K

TP618

R60273.2K

R6053.48K

TP625

C632.047uF

R607464K

TP620

R6081K

C635220pF

U611HCNW4503

2

3

8

6

5TP610

U613HCNW4503

2

3

8

6

5

+

-U602LM311

2

37

5 64 1

8

Q601MMBT3904L

3

1

2

TP604

U612HCNW4503

2

3

8

6

5

C629.047uF

R6116.19K

TP611

R610511

R6136.19K

U60574HCT595

14

1110

1213

151234567

9

168

SER

SRCLKSRCLR

RCLKG

QAQBQCQDQEQFQGQH

QH

VC

CG

ND

U604C74HCT04

56

147

+

-U607BLM393

5

67

84

TP617

C603680pF

R621215

R6275.11K

U604D74HCT04

9 8

147

TP613

R6156.19K

TP603

+ C6314.7uF

R62246.4K

TP629

TP612

U604E74HCT04

11 10

147

+ C6094.7uF

U610HCNW4503

2

3

8

6

5

TP606

R62810K

C625.047uF

TP619

C601

1000pF

R62610K

+

-

U601AMC34072

3

21

84

C626.047uF

TP616

TP626

C627.047uF

TP614

R62510K

R6172.15K

+

-U607ALM393

3

21

84

C6420.1uF

TP605

C6280.1uF

D601MMBD1503A

1

3

2

TP627

C633100pF

C623.047uF

TP623

C6210.1uF

TP630

+ C6144.7uF

TP628

C622.047uF

+

-

U601BMC34072

5

67

84

U604B74HCT04

34

147

TP624

R624

5.11K

R619619

TP621

TP607

U6034051

131415121524

611109

3

168 7

X0X1X2X3X4X5X6X7

INHABC

XVD

DV

SS

VE

E

R6063.48K

R620619

Page 115: Welch Allyn Medical Division - frankshospitalworkshop.comfrankshospitalworkshop.com/.../WelchAllyn_Atlas... · Atlas Operator’s Manual, contact: Customer Service Welch Allyn, Inc.

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

AMD N/C: 9, 10, 13, 14

AMD RY/BY#: 15

----------------

MICRON N/C: 9, 10, 15

MICRON Vpp: 13

Boot Configuration Latch

Active during power-on

Boot Configuration Pull-Up: 0 1 0 0 1 0 0 1 1 1 1 0 0 0 0 0

(see page 4-10)

0: internal arbitration

1: MSR(ip) = 0, interrupt prefix is 0x0000

0: reserved

0: memory controller is active after reset

1,0: 16-bit boot device

0: reserved

1,1: IMMR base is 0xfff0-0000

1,1: DBGC mode

0,0: DBPC mode

0,0: External bus division factor

Jim Belesiu

Jim Belesiu

Mar 5, 1999

Mar 5, 1999

620005.dsn

JAC5-39173 3/18/99

L. Phillips

Z. Psenicnik

J. Bello

3/19/99

3/19/99

3/19/99

LPP

B ZIP4/15/99JJC5-39353Component change forfrequency modulationChange Reset IC U3,No Load C40

C 6/24/99LPP5-39830

REV Description ECN/ECO Init Date Ckd

A Release to Production

620005 C

Flash, SDRAM and HRESET Config Word

C

4 6Thursday, June 24, 1999

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

A20

A22

A26

D13

dx7

GPL1

A24

A17

A13

D6

D4

dx9

A28

A10 A9

D14

D15

dx1

dx8

dx11

GPL0

A21

A22

D6

D3

D1

A28

A12

D2

D0

D10

A27

CS_n1

D11

D10

D1

D11

dx10

D9

D9

D9

D4

D8

D8

A30

D8

D4

D10

A21

A19

A15

D2

dx12

A25

A25

A23

A14

A11

A24

D13

CS_n0

GPL3GPL2

A16

D7

D0

D14

GPL1

A23

D15A29

A27

A29

D7

D5

D3

BS_AB1

A18

A30

D1

D7

dx4

D5

D12

BS_AB0

A26

D12

CLKOUT

BS_AB[0:3]

D[0:31]

GPL[0:7]

CS_n[0:7]

SRESET_n

HRESET_n

A[6:31]

VDDH

VDDH

VDDH

VDDH

VDDH

VDDH

VDDH

U6

FLASH-512Kx16

29313335384042443032343639414345

252423222120191887654321

4817

13 37

47

9

14

4627

2826

1112

1015

16

D0D1D2D3D4D5D6D7D8D9

D10D11D12D13D14D15

A0A1A2A3A4A5A6A7A8A9A10A11A12A13A14A15A16A17

NC

3

Vcc

Byte#

NC1

NC4

Gnd

-a

Gnd

-b

OE#CE#

WE#RESET#

NC2RY/BY#

A18

TP54

1

TP55

1

TP53

1

U5SDRAM-1Mx16

23568911123940424345464849

2122232427282930313220

3813

14

33

36

2647

37

19

18171516

4 10 41

3435

50

1 25447

DQ0DQ1DQ2DQ3DQ4DQ5DQ6DQ7DQ8DQ9

DQ10DQ11DQ12DQ13DQ14DQ15

A0A1A2A3A4A5A6A7A8A9A10

Vcc

Q3

Vcc

Q2

DQML

NC1

DQMH

Vss

1

Vss

Q4

NC2

BA

CS#RAS#WE#CAS#

Vss

Q1

Vss

Q2

Vss

Q3

CKECLK

Vss

2

Vcc

1V

cc2

Vcc

Q4

Vcc

Q1

R57

100K

12

T1U474AHC244

246811131517

119

181614129753

2010

1A11A21A31A42A12A22A32A4

1G2G

1Y11Y21Y31Y42Y12Y22Y32Y4

VC

CG

ND

T2

Page 116: Welch Allyn Medical Division - frankshospitalworkshop.comfrankshospitalworkshop.com/.../WelchAllyn_Atlas... · Atlas Operator’s Manual, contact: Customer Service Welch Allyn, Inc.

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

Audio DAC Resistors

Jim Belesiu

Jim Belesiu

Mar 5, 1999

Mar 5, 1999

620005.dsn

3/18/99JAC5-39173

3/19/99

3/19/99

3/19/99

L. Phillips

Z. Psenicnik

J. Bello

LPP

B ZIP4/15/99JJC5-39353Component change forfrequency modulationChange Reset IC U3,No Load C40

C 6/24/99LPP5-39830

REV Description ECN/ECO Init Date Ckd

A Release to Production

620005 C

FPGA

C

2 6Thursday, June 24, 1999

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

A26A27A28A29

GPL1

CS_n2

VIDEO1

D6

VIDEO6

D5

VIDEO5VIDEO4

VIDEO2

D4

VIDEO3

VIDEO7

D7

D3

VIDEO0

D2D1D0

S2

S4

S7

S6

S5

S0

S3

S1

S2

S7

S4

S1

S3

S0

S6S5

IRQ_n1IRQ_n2

SPIMOSI

SPICLKCONFIG_DONE

A25

NSTATUS

SDACK2_n

DREQ2_n

SDACK1_n

DREQ1_n

A[6:31] GPL[0:7] CS_n[0:7]

VIDEO[0:7]

D[0:31]

VSYNCHSYNC

Speaker-Audio

IRQ_n[0:7]

Blank

SPIMOSISPISEL_nVideo-Data-x

VSYNC-xHSYNC-x

NIBP-Data-x

Recorder-Strobe-x

Recorder-Data-Latch-xRecorder-Clock-x

Recorder-Data-x

PC6

Recorder-Motor-Step-x

NIBP-Overpressure-xNIBP-15mmHg-x

TIN1

FE-Data-x

TIN2

ADC-Clock-x

FE-Clock-x76.8KHz

TIN3NIBP-Fault-x

SPI-data-in-xSPI-clock-xSPI-data-out-xLED-Latch-xKey-Latch-x

NIBP-Offset-DAC-x

PA14

PC10

PB16

PA7PA6

PC11

PC12

Video-Clock-3

PA5

SPIMISO

RD/WR_n

Video-Clock-25

FieldSPICLK

CLKOUT

PA15

VDDH

R69 12.4K

R1251.58K

R68 24.9K

R70 6.19K

R71 3.09K

R73 787

TP80

1

C121

330pF12

U7

EPF6016A

5

12

4 8972

13

15

2021

1617

14

18

2425262728

50

876

29303132

3722 71

37

19

525556

36 54 53

68

41403534

70

33

39 88

51

10

86

69

12

38

23

89

11

49

42434445464748

1009998979695949392

90

84

82

8079

767574

676665

636261605958

57

91

64

85

83

81

7778

73

GN

D-5

GCLK-12

nCE

DC

LK

CO

NF

IG_D

ON

E

GCLK-13

P15

GN

D-2

0

VC

C-2

1

P16P17

P14

TMS-18

P24P25P26P27P28

P50

GN

D-8

7

VC

C-6

P29P30P31P32

GN

D-3

7

MS

EL

VC

C-7

1

P3P7

P19

P52P55P56

nCO

NF

IG

VC

C-5

4

GN

D-5

3

P68

P41P40P35P34

GN

D-7

0

P33

nST

AT

US

VC

C-8

8TDO-51

TDI-10

DA

TA

CLKUSR-69

P1P2

VC

C-3

8

TCK-23

P8P9

P11

nCEO-49

P42P43P44P45P46P47P48

P100P99P98P97P96P95P94P93P92

P90

P84

P82

P80P79

P76P75P74

RDYnBSY-67P66P65

GCLK-63GCLK-62

P61P60P59P58

P57

DEV_CLRn-91

INIT_DONE-64

DEV_OE-85

nRS-83

nWS-81

nCS-77Cs-78

P73

R72 1.58KR126

33

R66 100K

R67 49.9K

Page 117: Welch Allyn Medical Division - frankshospitalworkshop.comfrankshospitalworkshop.com/.../WelchAllyn_Atlas... · Atlas Operator’s Manual, contact: Customer Service Welch Allyn, Inc.

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

CPU PCA SW Debug Port(aka BDM Connector)

Test Points

1 - Visual History Buffer Flush Status (’823 output)

2 - Reset Output (’823 input)

3 - Ground

4 - BDM Clock (’823 input)

5 - Ground

6 - Visual History Buffer Flush Status (’823 output)

7 - Reset Input (’823 Output)

8 - BDM Data Input (’823 Input)

9 - Vcc

10 - BDM Data Output (’823 Output)

Main PCA Connectors

Jim Belesiu

Jim Belesiu

Mar 5, 1999

Mar 5, 1999

620005.dsn

5-39173 JAC 3/18/99 LPP

L. Phillips

Z. Psenicnik

J. Bello

3/19/99

3/19/99

3/19/99

BComponent change forfrequency modulation 5-39353 JJC 4/15/99 ZIP

Change Reset IC U3,No Load C40

C 5-39830 LPP 6/24/99

REV Description ECN/ECO Init Date Ckd

A Release to Production

620005 C

Atlas CPU SubsystemC

1 6Thursday, June 24, 1999

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

DSDO

ADC-Clock

SPI-data-in

TA_n

NIBP-15mmHg

PC6

CLKOUT

SpO2-Tx

Main-Supply-On

FE-Data

DSDI

SCD

Video-Horizontal-SyncSPI-clock

NIBP-PWM-ADC

SpO2-Rx

Spare-1

On-Standby-Key

Video-Clock-3

EKG-PWM-ADC

RS423-CTS

SPI-data-out

PA4

ETCO2-Rx

NIBP2-PW-ADC

VbackupNIBP-Valve

Spare-3

RD/WR_n

PA14

SPIMISO

Nurse-CallKey-Latch

Main-Power-Sync

Spare-2

NIBP-Overpressure

SCL

Batt-ID

ETCO2-Tx

PB16

PC10

VFLS1

+3.3V_unfiltered

Recorder-Data

PC13

HRESET_n

Video-Vertical-Sync

Recorder-Data-Latch

Burst_n

TS_n

AC-On

RS423-Tx

Recorder-Strobe

PA7

SRESET_nVFLS0

HRESET

Rec-Paper-Out

NIBP-Data

PC12

PA6

SPISEL_n

LED-Latch

NIBP-Offset-DAC

Video-Data

SPIMOSI

DSCK

+3.3V_unfiltered

Speaker-Audio

Recorder-Motor-Step

FE-Clock

PA5

PA15

NIBP-Fault

RS423-Rx

Recorder-Clock

SPICLK

VDDH

TP75 1

TP77 1

TP601 TP61 1

TP78 1

TP621

TP59 1

TP641

TP63 1

TP701

TP65 1

TP69 1

TP661

TP761

TP581

TP681

TP71 1

JP8

HEADER 30x2

13579

11131517192123252729313335373941434547495153555759

24681012141618202224262830323436384042444648505254565860

1357911131517192123252729313335373941434547495153555759

2468

1012141618202224262830323436384042444648505254565860

TP721

TP67 1

TP73 1

TP741

JP5

HEADER 5X2

1 23 45 67 89 10

Page 118: Welch Allyn Medical Division - frankshospitalworkshop.comfrankshospitalworkshop.com/.../WelchAllyn_Atlas... · Atlas Operator’s Manual, contact: Customer Service Welch Allyn, Inc.

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

MODCK (0,0) Selects 32KHz as main oscillator

RSTCONF = 0 allows ’823 to sample data bus

during HRESET

PWM Input Timer Signals

Jim Belesiu

Jim Belesiu

Mar 5, 1999

Mar 5, 1999

620005.dsn

5-39173 JAC 3/18/99 LPP

3/19/99

3/19/99

3/19/99

L. Phillips

Z. Psenicnik

J. Bello

Bfrequency modulationComponent change for 5-39353 JJC 4/15/99 ZIP

Change Reset IC U3,No Load C40

C 5-39830 LPP 6/24/99

620005 C

I/O Filters

C

3 6Thursday, June 24, 1999

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

IRQ_n0IRQ_n1IRQ_n2IRQ_n3

IRQ_n4IRQ_n5IRQ_n6IRQ_n7

IP_B6IP_B7

IP_B3IP_B2

IP_B4IP_B5

GPL4GPL5

IRQ_n0

SPI-data-out-xSPI-data-out

Video-Vertical-SyncVideo-Horizontal-Sync HSYNC-x

VSYNC-x

DSDI

SCLSCD

Recorder-Clock-xRecorder-Strobe-x

Recorder-Data-Latch-x

Recorder-Data-x

Recorder-Clock

Recorder-Data

Recorder-Data-Latch

Recorder-Strobe

VFLS1

VFLS0

WAIT_B_n

IP_B[2:7]

I2CSCLSCLSMRXD2SMTXD2SpO2-Tx

SpO2-Rx

ETCO2-TxETCO2-Rx SMRXD1

SMTXD1RXD2TXD2

RS423-RxRS423-Tx

Nurse-CallPC9

Key-Latch-xKey-Latch

SCD I2CSDA

NIBP-Offset-DACRec-Paper-Out

RS423-Rx

SpO2-Rx

FE-ClockFE-Data

ADC-ClockFE-Data-xFE-Clock-x

ADC-Clock-x

SPI-clock-xSPI-clock

LED-Latch-xSPI-data-in SPI-data-in-x

Video-Data-xVideo-Data

SPI-data-in

NIBP-Data-xNIBP-DataBatt-ID

NIBP-Fault-xNIBP-Fault

NIBP-15mmHg

NIBP-Overpressure

ETCO2-Rx

AC-On

PA6NIBP-Valve

NIBP-Offset-DAC-x

PB18

LED-Latch

PC5

PC7

Spare-1Spare-2

Batt-ID

EKG-PWM-ADC

MODCK1

MODCK2

PB17

PC8

PB19

Rec-Paper-Out

RS423-CTS

AC-On

TIN3NIBP2-PW-ADCSpare-3

Burst_nBG_nTS_nSPKROUT

NIBP-Fault

FRZ

PC11

DREQ1_n

GPL[0:7]

NIBP2-PW-ADC RS423-CTS

TMS

PB16

PC13

SRESET_n

PA4

PA7

PA15

PA5

On-Standby-KeyDREQ2_n

Spare-1

Spare-3

PC10

NIBP-PWM-ADC

PC12

76.8KHzTEXP

On-Standby-Key

Main-Power-SyncMain-Supply-On

EKG-PWM-ADC TIN1

TIN2NIBP-PWM-ADC

NIBP-15mmHg-x

Recorder-Motor-Step Recorder-Motor-Step-x

NIBP-Overpressure-xNIBP-OverpressureNIBP-15mmHg

PC4

TEA_n

TA_n

BB_n

BR_n

TRST_n

ALE_B

RSTCONF_n

BI_n

DSCK

IRQ_n[0:7]

VDDH

VDDH

VDDH

VDDH

VDDH

VDDH

VDDH

VDDH

VDDH

VDDH

VDDH

VDDH

VDDH

VDDH

C70330pF

12

C

R86

10K

51234

6789

10

R151215

C124330pF

12

C72330pF

12

C71330pF

12

C123330pF

12

C78330pF

12

R1521.58K

R108

1.58K

C79330pF

12

C125330pF

12

C81330pF

12

R105

1.58K

C80330pF

12

C89330pF

12

R104

NL

C86330pF

12

C87330pF

12

R107

NL

C88330pF

12

R133NL

C90330pF

12

R1293.09K

C93330pF

12

C91330pF

12

R88

100

1234 5

678

C92330pF

12

C94330pF

12

C97330pF

12

R1313.09K

C95330pF

12

C96330pF

12

R82

100

1234 5

678

R1321.58K

C105330pF

12

C12222pF

12

C103330pF

12

C

R83

10K

51234

6789

10

C102330pF

12

C

R76

10K

51234

6789

10

C104330pF

12

R87

100

1234 5

678

C

R103

10K

51234

6789

10

R85

100

1234 5

678

C66330pF

12

C

R16

10K

51234

6789

10

C67330pF

12

C

R91 10K

51234

6789

10

C68330pF

12

R77

100

1234 5

678

C69330pF

12

R1276.19K

R80

100

1234 5

678

C76330pF

12

R74

100

1234 5

678

C77330pF

12

C75330pF

12

C74330pF

12

C

R49

10K

51234

6789

10

R1303.09K

R90

100

1234 5

678

R1286.19K

R78

100

1234 5

678

R81

100

1234 5

678

C57330pF

12

C56330pF

12

C55330pF

12

C54330pF

12

C63330pF

12

C64330pF

12

R1341.58K

R120

NL

R116

100

1234 5

678

C65330pF

12

C62330pF

12

C126330pF

12

C73330pF

12

Page 119: Welch Allyn Medical Division - frankshospitalworkshop.comfrankshospitalworkshop.com/.../WelchAllyn_Atlas... · Atlas Operator’s Manual, contact: Customer Service Welch Allyn, Inc.

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

Attach GND and

VSSSYN at a

single point.

Place VSSSYN

on a split

plane beneath

the MPC823 PLL

section

Jim Belesiu

Jim Belesiu

Mar 5, 1999

Mar 5, 1999

620005.dsn

3/18/99JAC5-39173 LPP

L. Phillips

Z. Psenicnik

J. Bello

3/19/99

3/19/99

3/19/99

Bfrequency modulationComponent change for 5-39353 JJC 4/15/99 ZIP

Change Reset IC U3,No Load C40

C 5-39830 LPP 6/24/99

620005 C

PowerPC MPC823 CPU

C

5 6Thursday, June 24, 1999

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

BG

_nB

B_n

IRQ

_n2T

EA

_n

A27

D[0:31]

BS_AB[0:3]

IP_B

2

IRQ

_n7

D18

D4

D0

A22

A14

A[6:31]

IRQ_n[0:7]

IP_B

4

TA

_n

D30

D22

D21

D7

D6

D1

A30

A18

IP_B

5B

R_n

D31

D23

D20

D15

D11

D9

D8

A24

A21

A20

A19

A17

A8

IP_B

6

BS

_AB

0

IRQ

_n4

SP

KR

OU

T

D29

A12

A11 IR

Q_n

1

IRQ

_n5

CS

_n7

D13

GP

L5

GP

L3

IRQ

_n6

CS

_n6

CS

_n5

A25

IP_B

3

BS

_AB

2

TS

IZ1

CS

_n4

D26

D24

D16

A6

GPL[0:7]

GP

L6

GP

L4

D28

D5

D3

D2

A26

GP

L7

TS

IZ0

CS

_n0

A31

A28

A23

A9

GP

L2

BI_

n

D27

D25

D10

A16

A15

A10

CS_n[0:7]

IP_B

7

FR

Z

IRQ

_n3

CS

_n1

D12

A7

TSIZ[0:1]

BS

_AB

3

IRQ

_n0

CS

_n3

D14

A29

IP_B[2:7]

GP

L1G

PL0

BS

_AB

1

CS

_n2

D19

TS

_n

D17

A13

VID

EO

0V

IDE

O1

VID

EO

2V

IDE

O3

VID

EO

4V

IDE

O5

VID

EO

6V

IDE

O7

GN

D

VS

SS

YN

VIDEO[0:7]

A[6:31]

TSIZ[0:1]

TEXP

PORESET_n

EXTCLK

Field

HSYNC

SPISEL_n

SPIMOSISPICLK

Video-Clock-3XTAL

MODCK2XFC

MODCK1EXTAL

HRESET_n

VSYNC

SRESET_n

CLKOUT

Blank

SPIMISO

RD/WR_n

I2CSCLI2CSDA

CS_n[0:7]

IRQ_n[0:7]

BS_AB[0:3]

SMRXD2

PA7SMTXD2

PA6

PA4PA5

PA15PA14

TXD2RXD2

PB19

PB16

PB18PB17

SDACK2_nSDACK1_n

SMTXD1SMRXD1

DREQ1_n

PC13DREQ2_n

PC12

PC10PC11

PC7

PC5

PC8PC9

PC6

DSDOTMS

TRST_nVFLS0

VFLS1

DSCK

RSTCONF_n

DSDI

D[0:31]

GPL[0:7]

WAIT_B_nALE_B

IP_B[2:7]

Burst_n

TS_nTA_nTEA_nBI_nBR_nBG_nBB_n

SPKROUTFRZ

PC4

VDDH

VDDL

KAPWR VDDSYN

MPC823�WKH�PRQVWHU�

U1

MPC823ZC

M13

N15

N16

M15

L13

M16

M14

L14

L15

L16

K14

K13

G13

K15

J15

J14

G14

H15

H13

H14

F14

K16

G16

H16

G15

F16

M1

L1 J2 J1 L2 H1

F1

E1

M2

K2

K3

K1

M4

M3

J3 J4 H2

K4

H3

G2

G3

F2

H4

L4 F3

G4

E4

L3 F4

E2

D2

E3

D12

A14

B14

A15

B16

D13

C14

B15

E5E6E7E8E9

E10E11E12

F5F12G5

G12H5

H12

J5J12K5

K12L5

L12M5M6M7M8M9

M10

A7G1J16T7

F6

F7

F8

F9

F10

F11

G6

G7

G8

G9

G10

G11

H6

H7

H8

H9

H10

H11

J6 J7 J8 J9 J10

J11

K6

K7

K8

K9

K10

K11

B1

A3

A1

A2

M11M12

L6 L7 L8 L9 L10

L11

B3

C5

B5

B4

A4

A5

B2

D1

A6

D5

T1

P4

T2

N5

R3

P5

T3

R4

R2

R1

P2

P3

N4

F15

E15

C13

B10

A13

D10

A12

C11

B12

D9

B7

C3

D4

D3

C2

A10

N3

N2

N1

B11

A11

C10

D16

E16

D15

F13

E13

C16

C15

D14

D11

B13

C12

T12

R12

R11

N12

P11

C4

B8

A8

C8

D7

A9

B9

C9

C7

D8

D6

B6

P16R15R14R13N10T9T8P8T6R6

N14P15P14T15T14P12N11T11T10R9R7P7N7R5

R16T16P13T13R10P9R8N8T5N6P6T4

A16C1C6

E14J13

N9

N13

P1

P10

A6

A7

A8

A9

A10

A11

A12

A13

A14

A15

A16

A17

A18

A19

A20

A21

A22

A23

A24

A25

A26

A27

A28

A29

A30

A31 D0

D1

D2

D3

D4

D5

D6

D7

D8

D9

D10

D11

D12

D13

D14

D15

D16

D17

D18

D19

D20

D21

D22

D23

D24

D25

D26

D27

D28

D29

D30

D31

CS

0_n

CS

1_n

CS

2_n

CS

3_n

CS

4_n

CS

5_n

CS

6_n

/ C

E1_

B_n

CS

7_n

/ C

E2_

B_n

VDDH1VDDH2VDDH3VDDH4VDDH5VDDH6VDDH7VDDH8VDDH9VDDH10VDDH11VDDH12VDDH13VDDH14

VDDH17VDDH18VDDH19VDDH20VDDH21VDDH22VDDH23VDDH24VDDH25VDDH26VDDH27VDDH28

VDDL1VDDL2VDDL3VDDL4

GN

D1

GN

D2

GN

D3

GN

D4

GN

D5

GN

D6

GN

D7

GN

D8

GN

D9

GN

D10

GN

D11

GN

D12

GN

D13

GN

D14

GN

D15

GN

D16

GN

D17

GN

D18

GN

D25

GN

D26

GN

D27

GN

D28

GN

D29

GN

D30

GN

D31

GN

D32

GN

D33

GN

D34

GN

D35

GN

D36

VD

DS

YN

KA

PW

R

VS

SS

YN

VS

SS

YN

1

VDDH29VDDH30

GN

D37

GN

D38

GN

D39

GN

D40

GN

D41

GN

D42

PO

RE

SE

T_n

RS

TC

ON

F_n

HR

ES

ET

_nS

RE

SE

T_n

XT

AL

EX

TA

LX

FC

CLK

OU

TE

XT

CLK

TE

XP

VD

0 /

LD1

/ P

D8

VD

1 /

LD2

/ P

D9

VD

2 /

LD3

/ P

D10

VD

3 /

LD4

/ P

D11

VD

4 /

LD5

/ P

D12

VD

5 /

LD6

/ P

D13

VD

6 /

LD7

/ P

D14

VD

7 /

LD8

/ P

D15

FIE

LD /

LD

0 /

PD

7B

LAN

K /

LO

E /

LC

D_A

C /

PD

6V

SY

NC

/ F

RA

ME

/ P

D5

HS

YN

C /

LO

AD

/ P

D4

CLK

-SH

IFT

/ P

D3

TS

IZ0

/ R

EG

_nT

SIZ

1R

D /

WR

_nB

urst

_nB

DIP

_n /

GP

L_B

5_n

TS

_nT

A_n

TE

A_n

BI_

n

RS

V_n

/ I

RQ

2_n

KR

_n /

IR

Q4_

n /

RE

TR

Y /

SP

KR

OU

TD

P0

/ IR

Q3_

n

DP

1 /

IRQ

4_n

DP

2 /

IRQ

5_n

DP

3 /

IRQ

6_n

FR

Z /

IR

Q6_

nIR

Q7_

n

IRQ

1_n

IRQ

0_n

BR

_n

BB

_nB

G_n

WE

0_n

/ B

S_A

B0_

n /

IOR

D_n

WE

1_n

/ B

S_A

B1_

n /

IOW

R_n

WE

2_n

/ B

S_A

B2_

n /

PC

OE

_nW

E3_

n /

BS

_AB

3_n

/ P

CW

E_n

GP

L_A

0_n

/ G

PL_

B0_

nG

PL_

A1_

n /

GP

L_B

1_n

/ O

E_n

GP

L_A

2_n

/ G

PL_

B2_

n /

CS

2_n

GP

L_A

3_n

/ G

PL_

B3_

n /

CS

3_n

UP

WA

ITA

/ G

PL_

A4_

n /

AS

_nU

PW

AIT

B /

GP

L_B

4_n

GP

L_A

5_n

TC

K /

DS

CK

TM

ST

DI

/ D

SD

IT

DO

/ D

SD

OT

RS

T_n

WA

IT_B

_nA

LE_B

/ D

SC

K /

AT

1IP

_B0

/ IW

P0

/ V

FLS

0IP

_B1

/ IW

P1

/ V

FLS

1IP

_B2

/ IO

IS16

_B_n

/ A

T2

IP_B

3 /

IWP

2 /

VF

2IP

_B4

/ LW

P0

/ V

F0

IP_B

5 /

LWP

1 /

VF

1IP

_B6

/ D

SD

I /

AT

0IP

_B7

/ P

TR

_n /

AT

3

OP

2 /

MO

DC

K1

/ S

TS

_nO

P3

/ M

OD

CK

2 /

DS

DO

PA15 / USBRXDPA14 / USBOE_n

PA13 / RXD2PA12 / TXD2

PA9 / L1TXDA / SMRXD2PA8 / L1RXDA / SMTXD2

PA7 / CLK1 / TIN1 / L1RCLKA / BRGO1PA6 / CLK2 / TOUT1_n / TIN3

PA5 / CLK3 / TIN2 / L1TCLKA / BRGO2PA4 / CLK4 / TOUT2_n / TIN4

PB31 / SPISEL_n / LCD_APB30 / SPICLK

PB29 / SPIMOSIPB28 / SPIMISO

PB27 / I2CSDA / BRGO1PB26 / I2CSCL / BRGO2

PB25 / SMTXD1PB24 / SMRXD1

PB23 / SMSYN1_n / SDACK1_nPB22 / SMSYN2_n / SDACK2_n

PB19 / L1ST1 / LCD_BPB18 / RTS2_n / L1ST2PB17 / L1ST3 / LCD_CPB16 / L1RQA / L1ST4

PC15 / DREQ1_n / L1ST5PC14 / DREQ2_n / RTS2_n / L1ST6

PC13 / L1ST7PC12 / L1RQA / L1ST8

PC11 / USBRXPPC10 / TGATE1_n / USBRXN

PC9 / CTS2_nPC8 / CD2_n / TGATE1_n

PC7 / USBTXPPC6 / USBTXN

PC5 / L1TSYNCA / SDACK1_nPC4 / L1RSYNCA

NC1NC2NC3

NC4NC5

NC

6N

C7

NC

8N

C9

Page 120: Welch Allyn Medical Division - frankshospitalworkshop.comfrankshospitalworkshop.com/.../WelchAllyn_Atlas... · Atlas Operator’s Manual, contact: Customer Service Welch Allyn, Inc.

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

Supply RF/EMIFilters and ResetCircuits

FPGA decoupling caps

MPC823 decoupling caps

System Clock

1536*830 < XFC < 1536*1470 pf Value selected for the final mulitplication ratio

RF Suppression

to CPU

System

Place decoupling capacitors next to CPU VDDSYN pin B1 and VSSSYN pin A1 and A2

Split ground plane under these components

’244

decoupling cap

DRAM decoupling caps

Place these components

as close to the

processor as possible

Use separate PPL VDDSYN power plane from 3.3V plain

to CPU PLL pins A1

and A2

FPGA Clock

FLASH decoupling caps

to CPU PLL

pin B1

to CPU 32KHz

Clock

PLL Filter

Capacitor

MPC823 PLLSupply

RF Suppression

Oscillator

decoupling

cap

Jim Belesiu

Jim Belesiu

Mar 5, 1999

Mar 5, 1999

620005.dsn

5-39173 JAC 3/18/99 LPP

L. Phillips

Z. Psenicnik

J. Bello

3/19/99

3/19/99

3/19/99

FM Section for spreading RF

emissions. R2 selects the

deviation.

Load C107 w/1.5uF and unload C1 for non-FM clocking

From FPGA

B ZIP4/15/99JJC5-39353frequency modulationComponent change for

Change Reset IC U3,No Load C40

C 6/24/995-39830 LPP

620005 C

Power Distribution, Clocks and Reset

C

6 6Thursday, June 24, 1999

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

xtalp

VCLK

VSSSYN

Q1-Base

PORESET-Input

XFCX

+3.3V_unfiltered

HRESET

HRESET_n

Video-Clock-25

Vbackup

EXTAL

PORESET_n

EXTCLK

XFC

+3.3V_unfiltered

XTAL

PA14

VDDH

VDDSYN

VDDH

VDDL

VDDH

VDDH

KAPWR

VDDH

VDDH

VDDH

VDDH

VDDH

C1116.8uF

12

C1106.8uF

12

C28100nF

12C130

NL

12

C29100nF

12

C10822pF

12

C43100nF

12

Y1

32768Hz

1 2

C44100nF

12

C115330pF

12

R118NL

R513.9M

R119NL

R50 200K

C41100nF

12

C42100nF

12

C39

100nF

12

L1Ferrite-120

1 2C106100nF

12

R123

100K

C166.8uF 1

2

L3Ferrite-120

1 2

R122

12.4K

C18

6.8uF

12

U32.0V

12

3

Reset_nInput

Gnd

Q1NL

3

1

2

R94

NL

R121

NL

C376.8uF

12

C116330pF 1

2

C1206.8uF

12

C38

6.8uF

12

R52

33

C114

330pF

12

C13

100nF

12

C15100nF

12

C6100nF

12

C146.8uF

12

C118

330pF

12

C7100nF

12

C10922pF

12

R21K

R117

200K

C17100nF

12

C119

330pF

12

C11.5uF

12

R124

1.58K

C36100nF

12

C128100nF

12

C40100nF

12

R1100

C4100nF

12

C5100nF

12

C2100nF

12

C12

6.8uF

12

C21100nF

12

C22100nF

12

C107NL

12

L2 Ferrite-120

1 2

C19100nF

12

U23.0V

12

3

Reset_nInput

Gnd

G1

SG-636PCE-25.175M

1

2 3

4OE

GND OUT

VDD

C20100nF

12

C30100nF

12

C1136.8uF

12

C31100nF

12

C117330pF

12

C1126.8uF

12

C32100nF

12

Page 121: Welch Allyn Medical Division - frankshospitalworkshop.comfrankshospitalworkshop.com/.../WelchAllyn_Atlas... · Atlas Operator’s Manual, contact: Customer Service Welch Allyn, Inc.

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

On/Standby

Place capacitorsby connector

AC On LEDs

Trend

Lead Select

Print

Break-Away PCB SectionFlag Pole Area

Place one tantalumcap near each sevensegment LED group

Place oneceramic capnear eachIC

Silence ButtonBreak-Away PCBSection

Silence

Switch

7

1

9

Pull-up Resistor Network Detail

5

6

4

8

10

2 3

Silence LED

Jim Belesiu

Jim Belesiu

3/15/99

3/15/99

3/23/99 LPPJAC5-39251

L. Phillips

Z. Psenicnik

J. Bello

3/24/99

3/24/99

3/24/99

B No Load D16

D13 to Low Profile, R51 to 316C

5-39485 4/28/99LPP LPP

7/23/99LPP5-39994

620008 C

Front Panel Display Board

C

1 5Friday, July 23, 1999

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

NIBP LED Circuits

Front Panel - C

LED_NIBP_Clock

LED_NIBP_Latch

LED_NIBP_Data_In

LED_NIBP_Data_Out

Silence-LEDLED_NIBP_Enable

I705124

Front Panel - D

LED_SpO2_Clock

LED_SpO2_Latch

LED_SpO2_Data_In

LED_SpO2_Enable

Keyboard Circuits

Front Panel - A

Key-Clock-b

Key-Latch-b

Key-Data-b

On/Off-sw

Silence-Switch

Trend

Lead-Select

Print

I705144

Front Panel - B

LED_TP_Data_In

LED_TP_Clock

LED_TP_LatchLED_TP_Data_Out

LED_TP_Enable

On/Off-sw

Clock1

PrintLead-SelectTrend

ACON-LED

u13-out

u19-out

Print-sw

Lead-Select-sw

FP-Common

ACLED-2

ACLED-1

AC-On-x

Sil-Sw-a

D10-C

D10-Vcc

Silence-Switch

On-Led

Silence-LED

Sil-Sw-b

Key-Clock

LED-Data

LED-Latch-2

u26-18Key-Latch-b

LED-Latch-n

Key-data-b

Key-DataLED-Data-b

Clock3

u26-9u26-7LED-Latch-1

Key-Latch-n

Clock2

LED_SPO2_enable

LED_TP_enable

LED-Enable

LED_NIBP_enable

Trend-sw

VCC

VCCVCC

VCC VCC VCC VCC VCC

VCC VCC VCC VCC VCC

VCC

VCC VCC VCC

VCC

VCC

VCC VCC

VCC

VCC VCC

VCC

VCC VCCVCC VCC VCC

VCC

TP2

C18

0.1uF

J2A

flex-cable-5

12345

TP3

J2xA

flex-cable-5

12345

TP4

C4

0.1uF

+ C1

4.7uF

U1F

74HC04

13 12

C21

0.1uF

+ C8

4.7uF

C24

0.1uF

+ C10

4.7uF

C20

0.1uF

+ C11

4.7uF

C23

0.1uF

+ C28

4.7uF

C25

0.1uF

C2

0.1uF

R12.2K

23418 5 6 7

C3

0.1uF

C26

0.1uF

C5

0.1uF

R71100

C6

0.1uF

U26

74HC244

2468

11131517

119

181614129753

1A11A21A31A42A12A22A32A4

1G2G

1Y11Y21Y31Y42Y12Y22Y32Y4

C7

0.1uF

R72100

C16

0.1uF

J1

HEADER 7X2

1 23 45 67 89 1011 1213 14

R73100

C12

0.1uF

+ C27

4.7uF

TP182

C13

0.1uF

+ C9

4.7uF

TP183

C14

0.1uF

TP184

C15

0.1uF

D15x5 Green

1 2

U1A

74HC04

1 2

C19

0.1uF

D25x5 Green

1 2

U1B

74HC04

3 4

C22

0.1uF

SW13

12

U1C

74HC04

5 6

D10

T1 (3mm) Red

12

SW9

12

U1D

74HC04

9 8

SW221 2

SW11

12

U1E

74HC04

11 10

SW28

1 2

R67 1.21K

1 2

J3A

flex-cable-5

12345

R51316

R66 1.21K

1 2

J3xA

flex-cable-5

12345

D13T1 (3mm) Green

12

R65 1.21K1 2

R22.15K

C17

0.1uF

R68 1.21K

1 2

Page 122: Welch Allyn Medical Division - frankshospitalworkshop.comfrankshospitalworkshop.com/.../WelchAllyn_Atlas... · Atlas Operator’s Manual, contact: Customer Service Welch Allyn, Inc.

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

ETCO2 Alarm On-Off

HR Alarm On-Off

LH Select

LH Adjust (+)

LH Adjust (-)

SpO2 Alarm On-Off

RH Select

RH Adjust (+)

RH Adjust (-)

NIBP Alarm On-Off

BP Auto

BP Start-Stop

QRS Volume (+)

QRS Volume (-)

Alarm Volume (+)

Alarm Volume (-)

Time

1

5

4

69

10

Pull-up Resistor Network Detail2 3

78

On / Standby

Jim Belesiu

3/15/99Jim Belesiu

3/15/99

Jim Belesiu

3/15/99Jim Belesiu

3/15/99 620008.dsn

3/23/99

3/23/99

3/23/99

3/23/99

L. Phillips

Z. Psenicnik

J. Bello

5-39251 JAC LPP

B No Load D16

D13 to Low Profile, R51 to 316C

4/28/99LPP LPP5-39485

5-39994 LPP 7/23/99

62008 A

Front Panel Display Board

C

1 5Friday, July 23, 1999

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

620008 C

Keyboard Scanner

C

2 5Friday, July 23, 1999

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

u2-9

Clock1

HRalarm-swLHselect-swLHAdjust+swLHAdjust-sw

QRSvol+sw

Alarmvol+swAlarmvol-swTime-sw

etco2-sw

Trend

Lead-Select

Print

NIBPalarm-sw

RHselect-sw

BPauto-sw

RHadjust+swRHadjust-sw

SpO2alarm-sw

BPstart/stop-sw

U3-4

QRSvol-sw

u2-10

VCC

VCC

VCC

TP80

SW19

1 2

TP81

SW20

1 2

TP82

SW211 2

TP86

C

R610K

512346789

10

TP85

C

R510K

543219876

10

TP84

SW251 2

TP77

SW26

1 2

TP83

SW23

1 2

TP87

SW24

1 2

TP88

C

R710K

512346789

10

U2

74HC165

10111213143456

2151

9

7

SERABCDEFGH

CLKINHSH/LD

QH

QH

TP178

SW27

1 2

U4

74HC165

10111213143456

2151

9

7

SERABCDEFGH

CLKINHSH/LD

QH

QH

D48

BAV99L

1

3

2

SW14

1 2

SW4

1 2

TP68

SW61 2

TP69

SW81 2

TP70

SW10

1 2

TP71

SW12

1 2

TP66

SW11 2

TP72SW21 2

TP73

SW3

1 2

TP74

SW5

1 2

U3

74HC165

10111213143456

2151

9

7

SERABCDEFGH

CLKINHSH/LD

QH

QHSW7

1 2

TP75

SW15

1 2

TP76

SW161 2

TP67

SW17

1 2

TP79

SW18

1 2

Key-Clock-b

Key-Latch-b

Key-Data-b

Silence-Switch

Trend

Lead-Select

Print

On/Off-sw

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A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

SpO2 Pulse Rate Hundreds SpO2 Pulse Rate Tens

Temperature TensTemperature Ones Temperature Tenths

Temperature Hundreds

SpO2 Pulse Rate Ones

Degree FDegree C

Jim Belesiu

3/15/99Jim Belesiu

3/15/99 620008.dsn

LPP3/23/99JAC5-39251

L. Phillips

Z. Psenicnik

J. Bello

3/24/99

3/24/99

3/24/99

B No Load D16

D13 to Low Profile, R51 to 316C

5-39485 LPP LPP4/28/99

7/23/99LPP5-39994

620008 C

Temp/Pulse LED Drivers

C

3 5Friday, July 23, 1999

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

d36-dd36-c

u16-15

u16-6

u19-15

u19-3

u19-6u19-7

d39-dd39-c

u18-5

d38-dd38-c

d35-c

u15-6

u15-15

d35-d

d39-b

d35-g

d39-a

d38-g

d36-ed34-d

u19-out

d38-a

d35-f

d33-b

d34-e

d39-f

d36-bd35-b

d34-f

d34-ad34-b

d34-g

d38-b

d39-e

d34-c

d39-g

d35-a

d36-g

u15-9

d38-f

d36-a

d38-e

u18-9

d36-f

u14-9

u17-9

d35-e

u17-15

u17-4u17-5

d37-dd37-c

d37-e

d37-a

d37-g

d37-b

d37-f

u16-9

LED-Latch-1

u14-4

u14-6

u14-2

u14-15

u14-5

u14-3

u14-1u15-1

u15-5u15-4

d33-c

u16-3

u16-4

u16-2

u16-5

u16-1

u15-7

u17-1u17-2

u18-15

u18-3

u18-1u18-2

u18-6

u18-4

u19-1u19-2

u19-5u19-4

LED-Data-b

u17-3

u15-2u15-3

u17-6

d35-dp

d46-cu16-7d47-c

u14-7

u18-7

LED-TP-Enable

Clock2

VCC VCC

VCC

VCCVCC

VCC

VCC

VCC

VCC

VCCVCC

VCC

VCC

VCCVCC

R32150

23418

567

A

B

CD

E

FG

D38

7-SEG LED 0.36

45

1

8

7

910

2

6

3

"E""D"

Anode-1

"C"

Dp

"B""A"

"F"

Anode-2

"G"

R27150

23418

567

A

B

CD

E

F

G

D33

7-SEG LED 0.36

45

1

8

7

910

2

6

3

"E""D"

Anode-1

"C"

Dp

"B""A"

"F"

Anode-2

"G"

TP50

A

B

CD

E

FG

D39

7-SEG LED 0.36

45

1

8

7

910

2

6

3

"E""D"

Anode-1

"C"

Dp

"B""A"

"F"

Anode-2

"G"

TP35

A

B

CD

E

FG

D37

7-SEG LED 0.36

45

1

8

7

910

2

6

3

"E""D"

Anode-1

"C"

Dp

"B""A"

"F"

Anode-2

"G"

D46

T1.75 (5mm) Green

12

R35150

12345

678

R52215

U14

74HC595A

14

1110

1213

151234567

9

SER

SRCLKSRCLR

RCLKG

QAQBQCQDQEQFQGQH

QH

R53215

TP14

D47

T1.75 (5mm) Green

12

TP10

TP21

TP12

TP22

TP30

R28150

23418

567

TP52

TP25

R31150

12345

678

TP33

A

B

C

D

E

FG

D34

7-SEG LED 0.36

45

1

8

7

910

2

6

3

"E""D"

Anode-1

"C"

Dp

"B""A"

"F"

Anode-2

"G"

TP34

U16

74HC595A

14

1110

1213

151234567

9

SER

SRCLKSRCLR

RCLKG

QAQBQCQDQEQFQGQH

QH

TP38R34150

23418

567

TP37

R37150

12345

678

TP40

U19

74HC595A

14

1110

1213

151234567

9

SER

SRCLKSRCLR

RCLKG

QAQBQCQDQEQFQGQH

QH

TP61

U18

74HC595A

14

1110

1213

151234567

9

SER

SRCLKSRCLR

RCLKG

QAQBQCQDQEQFQGQH

QH

TP62

R36150

12345

678

TP63

R33150

23418

567

TP64

R30150

12345

678

TP42

U15

74HC595A

14

1110

1213

151234567

9

SER

SRCLKSRCLR

RCLKG

QAQBQCQDQEQFQGQH

QH

TP59

R26150

12345

678

TP60

R29150

12345

678

TP5

A

B

C

D

E

FG

D36

7-SEG LED 0.36

45

1

8

7

910

2

6

3

"E""D"

Anode-1

"C"

Dp

"B""A"

"F"

Anode-2

"G"

U17

74HC595A

14

1110

1213

151234567

9

SER

SRCLKSRCLR

RCLKG

QAQBQCQDQEQFQGQH

QH

A

B

C

D

E

FG

D35

7-SEG LED 0.36

45

1

8

7

910

2

6

3

"E""D"

Anode-1

"C"

Dp

"B""A"

"F"

Anode-2

"G"LED_TP_Data_In

LED_TP_Data_Out

LED_TP_Clock

LED_TP_Latch

LED_TP_Enable

Page 124: Welch Allyn Medical Division - frankshospitalworkshop.comfrankshospitalworkshop.com/.../WelchAllyn_Atlas... · Atlas Operator’s Manual, contact: Customer Service Welch Allyn, Inc.

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

Diastolic Hundreds Diastolic Tens Diastolic Ones

BP Dia Hi BP Dia Lo

Systolic Ones

BP Sys Hi BP Sys LoNIBP Alarm On/Off

Systolic TensSystolic Hundreds

Q30Q60 QxQ1Q5 Q3Q10Q15

Jim Belesiu

3/15/99Jim Belesiu

3/15/99 620008.dsn

5.-39251 JAC 3/23/99 LPP

L. Phillips

Z. Psenicnik

J. Bello

3/24/99

3/24/99

3/24/99

B No Load D16

D13 to Low Profile, R51 to 316C

4/28/99LPP LPP5-39485

5-39994 LPP 7/23/99

620008 C

NIBP LED Drivers

C

4 5Friday, July 23, 1999

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

d44-ad44-bd44-c

d45-a

d45-cd45-b

d44-g

u20-4

d41-gd42-f

d41-a

d41-d

d42-g

u20-5

d44-e

d42-d

d41-bd42-a

d45-gd44-f

d42-c

u20-1

d41-e

d45-dd44-d

u20-6

u20-2

d45-f

d41-fu19-out

d42-b

d45-e

u20-15

u20-3

u20-out

u23-out

u22-out

u25-out

u21-out

d40-f

d40-bd40-c

d40-g

d40-a

d41-c

d42-e

d43-dd43-e

d43-gd43-fu23-1

u23-3

u24-15

u24-2u24-3u24-4u24-5u24-6

u25-2

u25-5d43-cd43-bd43-a

u23-4

u20-7 d15-c

Clock3

u23-2

u23-15

u23-5

u23-7

u21-7

d6-c

u21-3u21-2

u21-15

u21-5u21-4

u21-6u22-7

u22-1

u22-3u22-2

U22-15

u22-4

u22-6u22-5

d8-c

u25-7

d14-c

u25-1

u25-4u25-3

u25-15

u24-out

d11-c

u24-7

u24-1

u21-1

u23-6 u25-6

d30-ad31-a

u13-4

u13-7

u13-15

u13-3

u13-1

u13-6u13-5

u13-2

d24-a

d28-a

d22-a

d29-a

d25-ad26-a

u13-out

d40-ed40-d

LED-NIBP-Enable

LED-Latch-2

VCC

VCC VCC

VCC VCC VCC

VCCVCC VCC

VCCVCCVCC

VCC

VCC

TP93

D6

T1.75 (5mm) Green

12

D28

T1.

75 (

5mm

) G

reen

12

TP103

D8

T1.75 (5mm) Green

12

D26

T1.

75 (

5mm

) G

reen

12

R56215

D11

T1.75 (5mm) Green

12

D22

T1.

75 (

5mm

) G

reen

12

TP110

D14

T1.75 (5mm) Green

12

D24

T1.

75 (

5mm

) G

reen

12

TP111

R42680

12345

678

TP142

R57215

A

B

C

D

E

FG

D41

7-SEG LED 0.5

12

3

4

5

67

9

8

10

"E""D"

Anode-1

"C"

Dp

"B""A"

"F"

Anode-2

"G"

TP179

TP137

R40680

23418

567

TP141

TP118

A

B

C

D

E

FG

D42

7-SEG LED 0.5

12

3

4

5

67

9

8

10

"E""D"

Anode-1

"C"

Dp

"B""A"

"F"

Anode-2

"G"

R58215

R44680

23418

567

U24

74HC595A

14

1110

1213

151234567

9

SER

SRCLKSRCLR

RCLKG

QAQBQCQDQEQFQGQH

QH

TP116

U23

74HC595A

14

1110

1213

151234567

9

SER

SRCLKSRCLR

RCLKG

QAQBQCQDQEQFQGQH

QH

U25

74HC595A

14

1110

1213

151234567

9

SER

SRCLKSRCLR

RCLKG

QAQBQCQDQEQFQGQH

QHTP128

A

B

CD

E

FG

D43

7-SEG LED 0.5

12

3

4

5

67

9

8

10

"E""D"

Anode-1

"C"

Dp

"B""A"

"F"

Anode-2

"G"

R48680

12345

678

TP136

R47680

12345

678

R49680

12345

678

TP140

TP105

A

B

CD

E

FG

D44

7-SEG LED 0.5

12

3

4

5

67

9

8

10

"E""D"

Anode-1

"C"

Dp

"B""A"

"F"

Anode-2

"G"

TP126

TP89

A

B

CD

E

FG

D45

7-SEG LED 0.5

12

3

4

5

67

9

8

10

"E""D"

Anode-1

"C"

Dp

"B""A"

"F"

Anode-2

"G"

TP130

R542.15K

U21

74HC595A

14

1110

1213

151234567

9

SER

SRCLKSRCLR

RCLKG

QAQBQCQDQEQFQGQH

QH

TP180

TP112

U22

74HC595A

14

1110

1213

151234567

9

SER

SRCLKSRCLR

RCLKG

QAQBQCQDQEQFQGQH

QH

TP181

TP138

R38680

23418

567

U13

74HC595A

14

1110

1213

151234567

9

SER

SRCLKSRCLR

RCLKG

QAQBQCQDQEQFQGQH

QH

TP114

U20

74HC595A

14

1110

1213

151234567

9

SER

SRCLKSRCLR

RCLKG

QAQBQCQDQEQFQGQH

QH

D31

T1.

75 (

5mm

) G

reen

12

TP139

R43680

12345

678

R25150

12345

678

TP132

R41680

12345

678

R24150

12345

678

R591.21K

R39680

23418

567

TP1

R55215

R46

680

23418

567

TP8

TP91

D15

T1 (3mm) Red

12

D29

T1.

75 (

5mm

) G

reen

12

TP101

R45680

23418

567

D30

T1.

75 (

5mm

) G

reen

12

TP113

A

B

C

D

E

FG

D40

7-SEG LED 0.5

12

3

4

5

67

9

8

10

"E""D"

Anode-1

"C"

Dp

"B""A"

"F"

Anode-2

"G"

D25

T1.

75 (

5mm

) G

reen

12

LED_NIBP_Clock

LED_NIBP_Latch

LED_NIBP_Data_In

Silence-LED

LED_NIBP_Data_Out

LED_NIBP_Enable

Page 125: Welch Allyn Medical Division - frankshospitalworkshop.comfrankshospitalworkshop.com/.../WelchAllyn_Atlas... · Atlas Operator’s Manual, contact: Customer Service Welch Allyn, Inc.

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

Jim Belesiu

3/15/99Jim Belesiu

3/15/99 620008.dsn

HR Alarm

On/Off

SpO2 % Hundreds

ETCO2 Alarm

On/Off

SpO2 % Ones

SpO2 Bargraph

SpO2 % Tens

SpO2 Alarm

On/Off

SpO2 Lo

SpO2 Hi

3/23/99

3/24/99

3/24/99

3/24/99

L. Phillips

Z. Psenicnik

J. Bello

5-39251 JAC LPP

B No Load D16

D13 to Low Profile, R51 to 316C

5-39485 LPP LPP4/28/99

7/23/99LPP5-39994

620008 C

SPO2 LED Drivers

C

5 5Friday, July 23, 1999

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

u5-1

d9-c

u7-2

u12-4

d5-e

u12-7

d4-f

u12-out

d4-c

u7-out

d4-g

d27-15

u7-7

u6-5

u5-out

u13-out

u5-4

d12-c

u7-1

u6-3

u6-15

d5-c

d27-18

d27-11

d16-c

u7-6

u12-1

u5-2d5-d

d27-19

u7-5

d4-e

d27-20

u6-7

d5-g

d27-14

u5-15

d7-c

u7-15

d3-b

u6-2

Clock1

d5-b

d27-17

d27-12

u5-5u7-4

d4-ad4-b

u12-6

u12-2

u7-3

d5-f

d27-13

u5-3d3-c

LED-Latch-2

d4-d

d5-a

d27-16

d18-c

u6-6

u6-1

u6-4

u12-15

u6-out

LED-SPO2-Enable

u5-6

u12-5

u12-3

VCC

VCC

VCC

VCC

VCC VCC

VCC

VCC

VCC

VCCVCC

R21680

12345

678

D7T1 (3mm) Red

12

A

B

C

D

E

FG

D3

7-SEG LED 0.5

12

3

4

5

67

9

8

10

"E""D"

Anode-1

"C"

Dp

"B""A"

"F"

Anode-2

"G"

TP153

D9T1 (3mm) Red

12

TP151

R10680

43218

675

D12T1 (3mm) Red

12

U7

74HC595A

14

1110

1213

152134567

9

SER

SRCLKSRCLR

RCLKG

QAQCQBQDQEQFQGQH

QH

R63215

R69681

R64215

A

B

C

D

E

FG

D4

7-SEG LED 0.5

12

3

4

5

67

9

8

10

"E""D"

Anode-1

"C"

Dp

"B""A"

"F"

Anode-2

"G"

TP177

TP162

R23680

12345

678

TP175

U12

74HC595A

14

1110

1213

151234567

9

SER

SRCLKSRCLR

RCLKG

QAQBQCQDQEQFQGQH

QH

R9680

43218

765

TP155

U5

74HC595A

14

1110

1213

151234567

9

SER

SRCLKSRCLR

RCLKG

QAQBQCQDQEQFQGQH

QH

U6

74HC595A

14

1110

1213

151234567

9

SER

SRCLKSRCLR

RCLKG

QAQBQCQDQEQFQGQH

QH

R70681

R12680

43218

765

TP172

TP143

TP170

TP174

TP168

TP152

R13680

43218

765

R622.2K

43218

765

A

B

C

D

E

FG

D5

7-SEG LED 0.5

12

3

4

5

67

9

8

10

"E""D"

Anode-1

"C"

Dp

"B""A"

"F"

Anode-2

"G"

D27

10 LED Bargraph

21

5678910

34

11121314151617181920

D18

T1.75 (5mm) Green

12

TP149

D16

No Load

12

TP173

TP176

LED_SpO2_Clock

LED_SpO2_Latch

LED_SpO2_Data_In

LED_SpO2_Enable

Page 126: Welch Allyn Medical Division - frankshospitalworkshop.comfrankshospitalworkshop.com/.../WelchAllyn_Atlas... · Atlas Operator’s Manual, contact: Customer Service Welch Allyn, Inc.

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

Zero Adjust

Size Adjust

Vertical Amplifier

Horizontal AmplifierGrid Voltages

Video Amplifier

Break Away CRT socket Board

6 Position flat ribbon cableConnects Main CRT to CRTsocket Board

Ramp Generator

750uSec

16.7mSec

Vertical Sync

5.5uSec

31.7uSec

Horizontal Sync

To Yoke

Unused

BrightnessAdjust

FocusAdjust

1/2W Carbon Comp

To MainBoard

5-39097 JAC 3/9/99 LPP

Rick Myers

Rick Myers

Mar 4 1999

Mar 4 1999

620011.dsn

L.Phillips

Z.Psenicnik

J.Bello

3/9/99

3/9/99

3/9/99

Modify Video AmplifierReduce RF Emissions

ZIP4/15/99JJC5-39339

CIncrease Flex Cable to3 inches 5-39831 6/24/99LPP

D

Width Coil (L3)inductance rangechanged

Width Coil Inductance(L3) increased

B

LPP

5-40006 LPP 7/23/99

REV Description ECN/ECO Init Date Ckd

A Release to Production

620011 D

CRT Deflection Board

C

1 1Friday, July 23, 1999

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

U4.2

U1.2

u1.7

u1.6

u1.5

vcadj+ vcadj-

vadj

U1.3

u2.2

ramp

q4.b

q3.b

u2.7 u2.6

vert-

hlin hwide

+12filt

q5.c

q5.b

hor+

vert+

q1.b

q1.e

J3.5J3.6

tube.g4

u4.4

q2.b

q6.d

vcadj

d6.c

Boost

Hor

+B

d5.c

Focus

Vg1

Vd

Vg2

d4.a

J3.1

u4-6

Grid2

C22-2

Video

HsyncVsync

Grid1

vidout

tube.vd

tube.g2

J3.3 tube.12V

tube.g1

tube.gndtube.g1

j2-3

hor-

q7-g

q8-b

q8-e

u2.1

+Vvid

+Vvid

+5V

+5V

+5V

+5V

+5V

+5V

+12V

+12V

+12V

+12V+12V

+12V

+12V

+12V

+12V

+12V

L315- 35uH

E1

21

R2410K

D61N4148

12

+ C13

22uF

Q6IRF640

2

1

34

D31N4935

1 2

R2819.6K

R43

5.11K

E2

21

D51N4937

1 2

J1

CON6

123456

R323.7K

D41N4935

12

D2

MUR120

1 2

C14.01uF

R15 38.3

R17 10C1.1uF

R9

1.47K

D11N4148

12R2310K

R45 330

To CRT

AnodeT1CRT-FBT

10

9

7

1

3

5

2

8

J4

CRT-Socket

1234567

U4F

74HCT04

13 12

C17.01uF

D71N4148

12

U4C

74HCT04

5 6

R10 1K

R5119.6K

U4E

74HCT04

11 10

C16.01uF

R741.2K

Q7BS170

1

2

3

+

- U2AMC34072

3

21

84

R16 10

J3

Flex6

123456

R11K

R44 330

U4B

74HCT04

3 4

R27.50K

R261K

R11

1.96K

R501.96K

U3MC78L05ACP

3 1

2

VIN VOUT

GN

D

R29 100K

+

-

U1BTLC272

5

67

84

C7.047uF

R25215

R12562

C6.047uF

R371.96K

C15.01uF

C8.022uF

J3x

Flex6

123456

R361.96K

C19.01uF

C96.8uF

R48100

R841.2K

L1

47uH

R641.2K

R41681

R13169

R2710

C2100pf

J2

CON5

12345

C3.047uF

R18562

Q2MPSW51A 3

2

1

C18.047uF

C20No Load

Q1MPSW01A

3

2

1

R521.96K

R14562

C22.022uF

R30100K

+ C1222uF

R20169

Q82N3904

3

2

1

Q4MPSW51A3

2

1

R3110K

E5

21

Q3MPSW01A

3

2

1

R21562

U4D

74HCT04

9 8

R19562

+

- U1ATLC272

3

21

84

+

-U2BMC34072

5

67

84

R2210K

C4.047uF

+ C522uF

U4A

74HCT04

1 2

R47 47K

E4

21

R46 47K

+C111000uF

R410K

+C101000uF

R542.2K

Q52N3904

3

2

1

E3

21

L215uH

R322.5Meg

Page 127: Welch Allyn Medical Division - frankshospitalworkshop.comfrankshospitalworkshop.com/.../WelchAllyn_Atlas... · Atlas Operator’s Manual, contact: Customer Service Welch Allyn, Inc.

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

PrintheadOn/Off Switch

TemperatureAmplifier

ThermistorInput

+24V Boost(23.6 V nominal)

1

2

3

4

phase +

Connector Pin #

1 3 4 6

+

+ +

+ +

++

PrintheadConnector

Rick Myers

Rick Myers

Mar 5, 1999

Mar 5, 1999

620014.dsn

5-39179 JAC 3/18/99 LPP

L.Phillips

Z. Psenicnik

J. Bello

3/22/99

3/19/99

3/19/99

REV Description ECN/ECO Init Date Ckd

A Release to Production

620014 A

Printer Electronics

C

1 1Monday, March 22, 1999

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

Rec-Data

U2-fb

Rec-Data-Latch

Q4-D

Rec-Supply-On

U2-comp

U3-10

U1-1

Q4-

G

U1-2

Rec-StrobeRec-Clock

U2-

Isen

se

+12V

Q6-e

U2-

out

U3-8

Q4-s

U3-9

Strobe

+24V-switch

ClockLatch

Strobe

Data

u3-clk

Rec-Motor-Step

clk

data-IO

U3-7

U2-RT

J3-6

u6-6

J3-3J3-4

u6-clmp

u6-14u6-11

J3-1

u6-3

U3-5

U3-6

d6-c

Thermistor2Thermistor1

U1-3

q1-g

Q2-b

U3-3

n24Von

U2-Ref

Vpp

Vpp

u1-7

Rec-Temp

+5V

+12V

+5VRecVdc

+24V

RecVdc

+12V

D

+5V

+5V

D

+5V

D

+5V

D

+5V

D

+5V

+5V

D

+5V

D

D

A

A

A

A

A

A

A

A

A

A

A

A

AA

A

A

A

+24V

A

+5V

D

A

D

A

+24V

A

A A

A

A

A

+5V

+5V

+5V

A

A

C142200pF

TP27

Q4MTP30N06VL

23

1

4

U5C74HCT04

5 6

147

C18.047uF

U5B74HCT04

3 4

147

R224.22K

U5E74HCT04

11 10

147

TP29

C11.047uF

R193.16K

TP28

Q6MMBT3904L

3

1

2

R1310

R610K

TP14

R15147

R1619.6K

TP8

D3

BAV99L

1

3

2

R21K

TP10

R8 23.7K

R361.47K

TP24

Q2MMBT3904L

3

1

2

+ C61uF

R1410K

TP67

J3

CON6

123456

+ C41000uF

TP66

C3.01uF

+ C81800uF

C5 .01uF

TP68

L122uH

TP17

C2.01uF

R784.5K

C135600pF

R910K

R51K

C10.1uF

D2MBRS340T3

U5F74HCT04

13 12

147

D627V

13

U6ULN2065

36

1114

27916

18

1B2B3B4B

1C2C3C4C

CLMP1CLMP2

R241.96K

U2UC3843A

3

57

14

1

10

812

911

VFB

ISENSERT/CT

VREF

COMP

OUT

PW

R-G

ND

Vcc

GN

DV

c

TP9

C12.047uF

R18no-load

TP21

TP1

R351.47K

TP3

Q32N7002

3

1

2TP19

R1210K

+

- U1BMC34072

5

67

84

J2

CON16

12345678910111213141516

TP23

C21.047uF

R331.47K

R310K

+

- U1AMC34072

3

21

84

U3

PIC16C505

2

5

7

4

3

6

1 14

8

9

10

11

12

13ClkIn/Osc1/RB5

RC5/TOCK1

RC3

Vpp/MCLR/RB3

Clkout/Osc2/RB4

RC4

Vdd

Vss

RC2

RC1

RC0

RB2

RB1

RB0

TP6

Q1

MTP30P06V

2

1

34

R115.11K

C19.047uF

D127V

13

C1.047uF

+C2047uF

U5D74HCT04

9 8

147

U5A74HCT04

1 2

147

R1010K

C7.01uF

TP54

TP26

R341.47K

J1CON24A

1357911131517192123

2468

1012141618202224

R170.1

R151.1K

R49.09K

Page 128: Welch Allyn Medical Division - frankshospitalworkshop.comfrankshospitalworkshop.com/.../WelchAllyn_Atlas... · Atlas Operator’s Manual, contact: Customer Service Welch Allyn, Inc.

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

Front PanelDisplay Connector

Main PCAConnector

Recorder BoardConnector

CRT BoardConnector

EKG - Page6

Speaker Drive

SerialDataOut

4Vpp max.

NIBP - Page 2

SpO2 - Page4

EKG - Page4

To PIC

CO2 BoardConnector

Serial IO - Page8

Page1

(Front Panel Key)

(To Processor)(To U2)

(pg 3)

(pg 1)

FanConnector

620017.dsnRick Myers

Rick Myers

Mar 5, 1999

Mar 5, 1999

5-39121 JAC 3/15/99

L. Phillips

LPP

Z. Psenicnik

J. Bello

3/16/99

3/16/99

3/16/99

B See ECN worksheetRecorderESD Ground

D

Improvements for ESD, RFI,and Fast Transients, CorrectRespiration Diff-Amp Topology

5-39455 LPP LPP4/27/99

5-39821 LPP 6/24/99

E

Mods to U2 clock line, Resp gainamp, ECG supply, and NVRAMpullup

Jumper wirefrom J4-20 toJ4-55

5-39936 LPP 7/9/99

LPP

620017 E

Main Board - Model 220

C

1 8Tuesday, July 13, 1999

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

Key-Data

U7-wc

SPI-Data-Out

Spare-3

NIBP-15mmHgNIBP-Data

Spare-2

SCL

Video-Data

SCD

SPO2-Tx

LED-Data-b

NIBP-Safety

Video-Data

HRESET

NIBP-OP

Video-VSync

Video-HSyncVideo-VSync

Video-HSync

Speaker-Audio

SPI-data-in

SPO2-Rx

SPO2-Rx

NIBP-PWM-ADC

NIBP-Valve-CloseVbackup

RS232-CTS

EROM-wr

ETCO2-Tx

FE-Clock

EKG-Data-Clock

PIC-Data

LED-Latch-b

LED-Latch

Key-Latch-n

ETCO2-Rx

RS423-Rx

RS423-Tx

Nurse-Call

Batt-ID

q2-c

Q1-e

+3.3V

Q2-b

ACON-LED

PIC-audio

NIBP-Offset-DACNIBP2-PW-ADC

LED-Data

Key-Latch-n-b

LED-On

LED-On

PIC-Clk

uP-RESET

SPI-Clock

Key-clock

Key-Clock-b

Rec-Clock

Rec-Motor-Step

Rec-Clock

Rec-Data-Latch Rec-Strobe

Rec-Data-LatchRec-Strobe

PIC-Vprog

Rec-Data

Rec-Motor-StepRec-Supply-On

Audio-Shutdown

SMR17-1

U9-

4

SP

U9-3

Audio-Shutdown

EKG-ADC-Clock

Power-Sync

ADC-Clock

EKG-PWM-ADC

Power-Sync

FE-Data

FE-DataVbackup

FE-Data-Clock

FE-ADC-Clock

FE-Data-In

+12V

NIBP-15mmHgNIBP-Safety

NIBP-PWM-ADCNIBP-Offset-DAC

NIBP-ADC-Clock

NIBP-Overpressure

NIBP-A/D-SelA

SpO2OutNIBP-Valve-Close

NIBP-Pump-On

NIBP-A/D-SelBNIBP-A/D-SelC

FE-Pwr-Sync

On/Off-Key

ac-on

+3.3V

U2-Reset

PIC-Data

RS423Rx

RS423Tx

NurseCall

AC+12V

Rec-GND

Battery

+3.3V

ac-on

AC+12V-fuse

ACON

+12V

Rec+DCV

Rec-GND

Rec-GND

Rec+DCV

Rec-GND

+12V

PIC-Clk

U2-Reset

PIC-Data

HRESET

Vbackup

On/Off

Batt-ID

On/Off-Key

Print-Temp

+5V

Rec-Supply-On

Rec+DCV

FE-PWM-ADC

+5V

+3.3V

+5V

D

D

D

D

D D

D

D

D

D

DD

D

D

D

D

D

D+5V

D

+5V

D

+5V

DD

+5V

DD

DD

+5V

A D

+3.3V

D

DD

+5V

+5V

D

D

+5V

+3.3V +5V

+5V

+5V

D

D

D

D

+5V

D

+5V

+12V

+5V

D

D

+5V

D

D

+5V

+5V

+5V

J1

CON7

1234567

C3220pF

J9

Tab-.187

12

U1B74HCT04

3 4

147

U8F74HCT04

13 12

147

C370.1uF

U1C74HCT04

56

147

TP14

TP13

TP15

+ C7330uF

U8C74HCT04

5 6

147

+

-

U9TPA301

3

41 6

728

5

C8.047uF

TP12

J4

Socket 30x2

13579

11131517192123252729313335373941434547495153555759

24681012141618202224262830323436384042444648505254565860

1357911131517192123252729313335373941434547495153555759

2468

1012141618202224262830323436384042444648505254565860

U8A74HCT04

12

147

R21.96K

TP18

R1919.6K

R410K

U3D74HCT08

12

1311

147

J8CON14AP

135791113

2468

101214

+++++++

+++++++

U274HCT595

14

1110

1213

151234567

9

168

SER

SRCLKSRCLR

RCLKG

QAQBQCQDQEQFQGQH

QH

VC

CG

ND

R519.6K

+

C364.7uF

U3A74HCT08

1

23

147

C22.047uF

TP17

C39.047uF

J6

CON6

123456

J2

CON3

123

TP23

C1.047uF

TP24

Q2MMBT3904L

3

1

2

U1A74HCT04

12

147

C20.047uF

R151.96K

J5

CON2

12

TP16

C23.047uF

C29.047uF

R163.48K

U3B74HCT08

4

56

147

TP19

Q32N7002

3

1

2

R2110K

TP1

U8D74HCT04

9 8

147

J11

CON3

123

TP2

TP22

R61.96K

TP20

TP3

R310K

TP21

TP4

R110K

U1F74HCT04

13 12

147

J3

CON4

1234

R2010K

+ C411uF

TP26

C40.047uF

Q1MMBT3906L

3

1

2

+ C4330uF

R2210K

U8E74HCT04

11 10

147

U1D74HCT04

9 8

147

TP11

C14.047uF

C5.047uF

U10

D620361-MX10000

2

5

7

4

3

6

1 14

8

9

10

11

12

13ClkIn/Osc1/RB5

TC5/TOCK1

RC3

Vpp/MCLR/RB3

Clkout/Osc2/RB4

RC4

Vdd

Vss

RC2

RC1

RC0

RB2

RB1

RB0

R231.21K

U3C74HCT08

9

108

147

C42.047uF

R241.21K

U1E74HCT04

11 10

147

U8B74HCT04

3 4

147

TP7

C38220pF

C30

.047uF

TP9

TP5

U7AT24C02N-10SC-2.7

123

6

7

5

84

A0A1A2

SCL

WC

SDA

VC

CG

ND

TP25

TP10

J7

CON24A

1357911131517192123

2468

1012141618202224

TP6

+

C354.7uF

TP8

R251.21K

R1719.6K

R181.21K

C2.047uF

Page 129: Welch Allyn Medical Division - frankshospitalworkshop.comfrankshospitalworkshop.com/.../WelchAllyn_Atlas... · Atlas Operator’s Manual, contact: Customer Service Welch Allyn, Inc.

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

A/D Mux

Zero Adjust+/-20mmHg range

PWM A/DConverter

0mmHG = 0.5V 300mmHG = 4.0V

PWM D/A76.8KHz

PrimaryTransducer

NIBPPWM A/DConverter

ZeroOffset

SafetyTransducer

Over PressureFault Circuit

620017.dsnRick Myers

Rick Myers

Mar 5, 1999

Mar 5, 1999

3/15/99JAC5-39121 LPP

L. Phillips

Z. Psenicnik

J. Bello

3/16/99

3/16/99

3/16/99

B See ECN worksheet

DImprovements for ESD, RFI,and Fast Transients, CorrectRespiration Diff-Amp Topology

5-39455 LPP 4/27/99 LPP

6/24/995-39821 LPP

EMods to U2 clock line, Respgain amp, ECG supply andNVRAM pullup

7/9/99LPP5-39936

LPP

REV Description ECN/ECO Init Date Ckd

A Release to Production

620017 E

NIBP ELECTRONICS

C

2 8Tuesday, July 13, 1999

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

D201-C

U208-2

U210-7

U204-7

U204-5

U203-3

U203-5

C207-1

U204-3

U204-2

U205-7

U206-6

U206-1

P202-Out-U206-7

U206-2

U202-3

P202-2

P202-5

U202-5

U208-1

u207-9

PrimaryPres

P4.25V

SafetyPres

U208-3

P201-Out

P201-6

U204-1

U208-7

U209-Out

U203-6

P202-Out+

U210-2

U210-3

U203-2

Q201-B

P.75V

+5V/2

U205-3

Q202-G

Pump-Pump+D

201-

A Valve-Valve+

U207-3

P201-pwr

NIBP-Offset-DAC

NIBP-ADC-Clock

P+.75V

NIBP-Safety

NIBP-PWM-ADC

P+12V

5VRef

NIBP-Overpressure

NIBP-15mmHg

Print-Temp

NIBP-A/D-SelB

+12V

+3.3V

+5V

P+.75V

NIBP-A/D-SelA

NIBP-A/D-SelC

BattCurrentBattVoltage

+5V +Vpump

NIBP-Pump-OnNIBP-Valve-Close

P+5V

P+5V

P+5V

P+5V

P+5V

P+5V

P+5VP+5V

P+5V

P+12V

P+12V

P+12V

P+12V

P+12V

+3.3V

+3.3V

P+12V

P+12V

P+12V

P+12V

P+12V

P+12V

+12V

P+12V

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

AA

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

AA

A

A

A

A

+

- U203ALM393

3

21

84

C215.047uF

+

-

U202AMC34072

3

21

84

C225.047uF

C2241000pF

U20178L05

8 1

2 3 6 7

IN OUT

GN

D

GN

D

GN

D

GN

D

TP214

R2333.48K

+

-

U208AMC34072

3

21

84

TP206

R2213.16K

C213.01uF

R23210K

R23010K

+ C2024.7uF

R24210K

C222.01uF

+

-

U205BMC34072

5

67

84

R23173.2K

TP217

Q201MMBT3904L

3

1

2

+

-

U206BMC34072

5

67

84

C223.01uF

TP225

D202BAV99L

1

3

2

R24010K

R2353.48K

R2291.96K

+

- U203BLM393

5

67

84

R24110K

R237464K

D201MMBD1503A

1

3

2

L201220uH

TP228

C220

.01uF

R243100KGain

and

Comp

XFPM-050KPGR-P1P201

1

2

3

6

+

-

U202BMC34072

5

67

84

TP207

U207B74HCT00

4

56

147

TP231

TP210

C232.047uF

+

-U210MAX941

2

3

61 4

7

5

C201.047uF

TP211

TP201

TP204

+C22910uF

TP237

C212680pF

TP240

TP232

C221.047uF

Q202MMDF2N02E

81

2

5 67

3

4

TP234

C205

.047uF

R21410K

C209.047uF

TP226

R2191.96K

C211

.047uF

R24631.6

C226.047uF

C216.047uF

R215100K

C231.01uF

U207A74HCT00

1

23

147

C204.047uF

TP221

C227680pF

TP222

+ C2071uF

R21619.6K

+

-

U204BMC34072

5

67

84

R2391K

R201576

+C2081uF

+

-

U204AMC34072

3

21

84

C203

.047uF

TP235

TP224

R2033.32K

R205750

C210.047uF

TP212

TP208

R24421.5K

TP213

C206.047uF

TP215

TP220

L202Bead

+

-

U208BMC34072

5

67

84

R2275.11K

R2363.83K

J201

CON5

12345

TP219

R22321.5K

U207C74HCT00

9

108

147

R2221K

R228

1.96K

R2241K

C230.047uF

U207D74HCT00

12

1311

147

TP239

TP236

R2251K

+

-

U205AMC34072

3

21

84

TP202

R2111.96K

R22621.5K

R2081.96K

C217

.047uF

-+

FPNS-07PGRP2022

13

5

6

+C2184.7uF

C219.047uF

C228.047uF

R2471K

TP209

R204150

R2481K

R21823.7K

R202174

R2175.62K

R21256.2K

R2343.48K

+

-

U206AMC34072

3

21

84

R213237K

Q203MMDF2N02E

81

2

5 67

3

4

R2091K

TP227

TP216

R207464K

TP229

R220806

R210464K

U2094051

131415121524

611109

3

168 7

X0X1X2X3X4X5X6X7

INHABC

XVD

DV

SS

VE

E

TP233

TP238

TP203

R2061K

TP230

C214.047uF

Page 130: Welch Allyn Medical Division - frankshospitalworkshop.comfrankshospitalworkshop.com/.../WelchAllyn_Atlas... · Atlas Operator’s Manual, contact: Customer Service Welch Allyn, Inc.

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

IsolationBarrier

Isolated SpO2Circuits

Grounded SpO2Circuits

Nonin SpO2Connector

Nellcor SpO2Connector

620017.dsnRick Myers

Rick Myers

Mar 5, 1999

Mar 5, 1999

3/15/99JAC5-39121 LPP

L. Phillips

Z. Psenicnik

J. Bello

3/16/99

3/16/99

3/16/99

B See ECN worksheet

SpO2 ESDGround

D

5-39455 LPP LPP4/27/99

Improvements for ESD, RFI,and Fast Transients, CorrectRespiration Diff-Amp Topology

6/24/99LPP5-39821

EMods to U2 clock line, Resp gain amp, ECG supply andNVRAM pullup

7/9/995-39936 LPP

LPP

REV Description ECN/ECO Init Date Ckd

A Release to Production

620017 E

Power Isolation and SpO2 Interface

C

4 8Tuesday, July 13, 1999

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

U402-1

C409-1

T401-4

Q40

1-g

U402-sen

opto-fb

iso401-a

Q40

2-e

Q401-s

U401-1

C408-2

U401-2iso401-b

sSpO2tx

Q403-e

sSpO2tx

U402-e

U402-ref

U402-rt

iso402-a

U401-5

U401-3

U403-fb

f-V

f+V T401-1

T401-8

U401-7

R419-2

U402-ct

U411-6

FE-Pwr-Sync

SpO2Out

+5V

+12V

+12V

s+5V

f+V

+5V

fVcc

fVee

f+5V

f+V

SpO2-Reset

s+5V

iso+5Vdig

s-5V

s-5V

s+5V

iso+5Vdig

s+5V

f+V

S

S

S

S

S S

iso+5Vdig

S

S

S

S

ED

ED

SS S

S S

S

SS

S

SSS

S

S S

S

S

S

S

S

ED SE

S

S

S

S

+ C43110uF

TP451

TP459

J403

Tab-.187

12

+

-U401BLM358

5

67

84

+ C43210uF

TP466

TP462

+

- U401ALM358

3

21

84

TP464

R405215

TP455

R4235.11K

C404.047uF

C409470pf

C4361000pF

R4141.96K

T401

IsoXfmr

5

8

1

2

3

4

TP463

C4112200pF

TP452

C401.047uF

C403.047uF

TP460

R42410K

R41710K

TP449

TP461

+C406100uF

C417680pF

TP453

R415100

TP467

TP465

TP454

C430.047uF

R412196

+C407100uF

D403

MBRS130T3

U40778L05

81

2367

INOUT

GN

D

GN

D

GN

D

GN

D

R404196K

TP450

D401MBRS130T3

C416.047uF

R40110K

+C405100uF

+ C43410uF

L401220uH

U4104N25

1 6

2

5

4

TP468 L402220uH

J402

CON14AP

13579

1113

2468101214

+++++++

+++++++

TP456

C429.047uF

C402.047uF

C420.047uF

R4115.11K

R40710

U411HCNW4503

2

3

8

6

5

D405BAV99L

1

3

2

R4031K

R4095.11K

R408100

TP457

C410.01uF

+ C43510uF

U40479L05

21367

5

INOUTININING

ND

C413.047uF

R4060.2

J401

CON4

1234

R419215

C414.047uF

U403LP2951C

873

62

15

4

VINFDBK

SHTDN

TAPSENS

VOUTERR

GN

D

R4107.5K

TP469

+ C4184.7uF

R42210K

C433470pf

U402

LM3524DM

12

16

15

945

10

67

12111314

3

8

V-V+

VREF

VIN

COMP+SENSE-SENSE

SHTDWN

RTCT

CAEACBEB

OSCOUT

GN

D

+ C41210uF

Q402MMBT3906L

3

1

2

TP458

C408.01uf

R40210K

+ C41910uF

Q403MMBT3904L

3

1

2

C422.047uF

R41610K

+C4151uF

Q401MTD3055V

23

1

4

C424.047uF

+ C421

1uF

+ C42810uF

C427.047uF

Page 131: Welch Allyn Medical Division - frankshospitalworkshop.comfrankshospitalworkshop.com/.../WelchAllyn_Atlas... · Atlas Operator’s Manual, contact: Customer Service Welch Allyn, Inc.

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

RespirationDriveCircuit

RespirationDiff Amp

B.W. = .06Hz to 16 Hz Gain =1000B.W. = 10Hz

IsolationBarrier

U702 U703

620017.dsnRick Myers

Rick Myers

Mar 5, 1999

Mar 5, 1999

5-39121 JAC 3/15/99 LPP

L. Phillips

Z. Psenicnik

J. Bello

3/16/99

3/16/99

3/16/99

B See ECN worksheet LPP LPP5-39455 4/27/99

DImprovements for ESD, RFI,and Fast Transients, CorrectRespiration Diff-Amp Topology

LPP5-39821 6/24/99

Mods to U2 clock line, Respgain amp, ECG supply andNVRAM pullup

E 5-39936 LPP 7/9/99

LPP

REV Description ECN/ECO Init Date Ckd

A Release to Production

620017 E

Respiration

C

7 8Wednesday, July 14, 1999

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

U702-6

U702-2

U702-1U702-3

D70

3-1

Q701-d

Q70

1-g

U703-5Resp-AC

U703-6

D703-3

D701-3

D702-3

C701-1

C702-1

iso701-a

RespDr+

RespDr-

U70

3-2

d705-c

U702-7

resp-clk u710-6

D704-3 U702-5

Resp-Reset

An-Resp

-Clamp +Clamp

Right-Arm

Left-Arm

f+5V

Resp-DC

fVcc

fVee

f+5V

FE-Pwr-Sync

+5V

iso+5Vdig iso+5Vdig

Resp-Off

E

E EE

E

E E

E

E

E

E

E

E

ED

fVcc

fVcc

fVcc

fVeefVee

fVee

E

EE

E E E

E

E

ED

fVee

fVcc

C717.047uF

TP712

C715.047uF

C7011000pF

R720100K

C716.047uF

C7021000pF

C7130.1uF

C718.047uF

R7153.16K

TP708

D705MMBD354LT1

1

3

2

TP707

TP705

TP717

TP713

+

- U703BAD712

5

67

84

+

-

U703AAD712

3

21

84

TP702

U701B74HC74

12

11

9

8

14 10

7 13

D

CLK

Q

Q

VC

C

PR

GN

D

CL

R7052.15K

+ C7194.7uF

R71115.8K

C714.047uF

TP703

D706MMBD1503A

1

3

2

R7121K

R7131K

U710HCNW4503

2

3

8

6

5

C7123.3uF

TP704

C706330pF

R71415.8K

R7163.16K

R718825K

R7173.16K

R71951.1K

R709464K

R721316K

R722316

U701A74HC74

2

3

5

6

144

71

D

CLK

Q

Q

VC

C

PR

GN

D

CL

D701MMBD1503A

1

3

2

R7071.96K

D702MMBD1503A

1

3

2

+

-

U702B

AD7125

67

84

D703MMBD1503A

1

3

2

C707330pF

D704MMBD1503A

1

3

2

TP720

C7050.1uF

Q701MMBF4393L

2

3

1

TP723R7011.96K

TP709

C7110.1uF

R7021.96K

R706215

TP701

TP711

TP706

R710464K

TP716

TP710

R7081.96K

+

- U702AAD712

3

21

84

TP721

R70331.6K

TP718

R70431.6K

TP714

R7252.15K

TP722

TP719

C721100pF

C720.047uF

R7231Meg

R724196K

TP715

Page 132: Welch Allyn Medical Division - frankshospitalworkshop.comfrankshospitalworkshop.com/.../WelchAllyn_Atlas... · Atlas Operator’s Manual, contact: Customer Service Welch Allyn, Inc.

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

On/Off Switch

+12V Boost(12.1V nominal)

Float Voltage

On/Off Circuit18V Boost - Mosfet Gate Voltage

Current Limit(1.5 Amp)

+5V LinearLowDropout

BatteryCharger

HeatsinkforQ312

Ibatt=0: BattCurr=0.74V

Ibatt=1.5: BattCurr=2.87V

Heatsinkfor D301

620017.dsnRick Myers

Rick Myers

Mar 5, 1999

Mar 5, 1999

5-39121 JAC 3/15/99 LPP

L. Phillips

Z. Psenicnik

J. Bello

3/16/99

3/16/99

3/16/99

B See ECN worksheet LPP LPP5-39455 4/27/99

DImprovements for ESD, RFI,and Fast Transients, CorrectRespiration Diff-Amp Topology

5-39821 LPP 6/24/99

EMods to U2 clock line, Respgain amp, ECG supply andNVRAM pullup

5-39936 LPP 7/9/99

LPP

620017 E

DC/DC Power Supplies

C

3 8Tuesday, July 13, 1999

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

U30

4-1

Q30

6-b

U301-ct

U30

5-1

U302-pwr

Q302-c

U305-6

Q305-d

Q307-e

Q308-d

U302-comp

U302-fb

U304-5

C324-2

U302-ct

Q31

0-b

U304-3

Q30

5-s

U303-ct

Q304-e

RT

301-1

U303-5 U305-pwr

R339-2

Bat-Adj

U304-7

U30

5-2

Q306-c

D307-A

U302-sense

U305-3

Bat-fuse

U30

2-ou

t

Q308-g

U304-2

V+18V

I-Batt

Q309-3

U304-6

C319-1

Q312-g

U301-comp

Q309-b

U305-5

C305-1

D312-c

Q313-d

Q314-d

U301-sw

U30

3-ou

tU301-pwr

U301-7

Q30

5-g

u307-6

Batt-fb

U303-fb

U303-cp

D304-C

L302

-1

Q303-s

Q302-B

Q301-b

C33

9-1

Q310-c

D309-a R343-1

F302-2 AC+12V-fuse

5VRef

5VRef

Ref-Batcharge

+12V

ACON

ACON

Ref-Batcharge

Battery

On/Off

+5V

AC+12V

+Vpump

Ref-Batcharge

VBackup

+3.3V

BattVoltage

BattCurrent

AC+12V-fuse

AC+12V-fuse

AC+12V-fuse

AC+12V-fuse

Rec+DCV

+Vfuse

+12V

+12V

D D

DDDD

+12V

D

+5V

TP340

TP321

Q305

MTP30N06VL

23

1

4

TP335

U306LF33CV

1 3

2

IN OUT

GN

D

C326.01uF

D301MBR2535CTL

1

324

+ C323100uF

R33319.6K

TP322

+ C325100uF

R34710K

D308 BAV99L

1

3

2

C322.047uF

TP345

R350

10K

Q312

MTP30N06VL

2 3

1

4

L305Bead

TP302

R30661.9K

TP341

D302BAV99L

1

3

2

F303

4Amp

R33919.6K

+ C3314.7uF

TP323

TP304

D3035.1V

13

C3055600pF

+

-

U305BMC34072

5

67

84

+ C3061uF

R3354.32K TP355

+ C3324.7uF

TP348

TP331

R31110K

TP328

R34910K

TP307U301MC34063AD

53

78

1

26

4

COMPTCAP

IPKIDC

ISWC

ISWEVcc

GN

D

TP315

Q310MMBT3904L

3

1

2

D309BAV70L

1

3

2

TP346

R34110K

+

-

U304AMC34072

3

21

84

TP330

D310MBRS340T3

TP306

C333.047uF

C314.047uF

R33219.6K

+ C3121000uF

R31919.6K

R3535.11K

C307.047uF

C337.047uF

HS302

6078

R331

33.2K

R3021.96K

Q311MTP30N06VL

23

1

4

R30110K

+C3191000uF

R31010K

TP332

C3241000pF

U302UC3843A

3

57

14

1

10

812

911

VFB

ISENSERT/CT

VREF

COMP

OUT

PW

R-G

ND

Vcc

GN

DV

c

D312BAV99L

1

3

2

C340.047uF

TP316

R3123.83K

D313NO LOAD

1

3

2

R304100K

R35514.7K

TP350

TP305

+C3021uF

R3270.1

C3095600pF

+

-

U305AMC34072

3

21

84

+ C3101000uF

L30222uH

D304MBRS340T3

L306Bead

R3251.96K

R34410K

TP329

R3074.64K

TP347

R338

1K

13

2

+ C301330uF

U303UC3843A

3

57

14

1

10

812

911

VFB

ISENSERT/CT

VREF

COMP

OUT

PW

R-G

ND

Vcc

GN

DV

c

R32210K

R32410K

L30447uH

R31810K

t

RT30110K

R34010K

Q307MMBT3904L

3

1

2

U307

LP2951CD-3.3

873

62

15

4

VINFDBKSHTDN

TAPSENS

VOUTERR

GN

D

Q313

2N7002

3

1

2

R3291K

R3378.87K

Q314

2N7002

3

1

2

F3014Amp

D311BAV70L

1

3

2

R33419.6K

Q306MMBT3904L

3

1

2

R315196

R33033.2K

Q304MMBT3904L

3

1

2

D305BAV99L

1

3

2

C338.047uF

C335.047uF

TP336

Q301MPSW51A

3

2

1

C3162200pF

+ C3391uF

C327.047uF

+ C329100uF

R34510K

D306MBRS340T3

Q309MMBT3906L

3

1

2

R30351.1K

TP339

C330.047uF

+

-

U304BMC34072

5

67

84

+ C318330uF

TP337

Q302MMBT3904L

3

1

2

D307MBRS340T3

TP326

R3525.11K

R323 1.96K

TP324

C328.047uF

R3131.96K

R32610

TP354

+ C304100uF

R3545.11K

+ C3111000uF

TP317

R31410

TP313

TP311

R3515.11K

C315.047uF

R34810K

TP338

Q308

MTP23P06V

2

1

34

TP320

R346100

TP351

Q303

MTP30N06VL

2 3

1

4

TP318

TP343

F3024Amp

R34219.6K

TP314

TP352

TP342

C334.047uF

C303470pf

R3094.64K

TP312

C321.01uF

TP349

TP333

R3207.5K

C336.047uF

L303Bead

C320.01uF

R3367.5K

R3177.5K

+ C313330uF

R34310K

TP309

R3051

C3082200pF

TP308

R3160.1

R32127.4K

R3281K

L3011mH

TP344

TP310

TP319

R30817.8K

HS301

6078

TP353

TP334

Page 133: Welch Allyn Medical Division - frankshospitalworkshop.comfrankshospitalworkshop.com/.../WelchAllyn_Atlas... · Atlas Operator’s Manual, contact: Customer Service Welch Allyn, Inc.

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

0.1%

0.1%

0.1%

0.1%

0.1%

0.1%

0.1%

0.1%

0.1%

0.1%

Defib ProtectRFI Filtering

Input BuffersGain = 9.26

WilsonNetwork

Lead Select

Diff AmpGain = 1

High Pass (0.05Hz or 0.5Hz)Low Pass (150Hz) Gain Stage

Gain = 74

RLD Amp

A/D InputsLeads Off

U501 U502 U503 U504 U505 U506 U507 U508

Shield 0.1%0.1%

620017.dsnRick Myers

Rick Myers

Mar 5, 1999

Mar 5, 1999

5-39121 JAC 3/15/99 LPP

L. Phillips

Z. Psenicnik

J. Bello

3/16/99

3/16/99

3/16/99

B See ECN worksheet

D

4/27/995-39455 LPP LPP

Improvements for ESD, RFI,and Fast Transients, CorrectRespiration Diff-Amp Topology

5-39821 LPP 6/24/99

Mods to U2 clock line, Respgain amp, ECG supply andNVRAM pullup

E LPP5-39936 7/9/99

LPP

620017 E

ECG Amp

C

5 8Wednesday, July 14, 1999

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

U501-6

U502-3

U502-2

U502-5

U503-2

Right-Arm

aVRaVLaVF

LA

LA

LLLL

LALLV+

RA

RA

RA mux-

mux+diff+

U508-3

Q504-d

diff-

ecg-hp

D503-3

-clamp

D501-3

U501-5

U501-2

C514-2

U503-5

R509-1

R511-1

R513-1

R515-1

Left-Arm

Left-Leg

V-Lead

Right-Leg

U501-3

Q504-s

Q504-g

+clamp

U502-6

V-

U508-5

c539-1

c541-1

c538-1

c540-1

U508-6

u509

-4

diff-out

u501

-8

u508-2

D502-3

RL-mux

D504-3

D505-3

Q50

1-S

Mux-LdS-A

Sw-MonBw

Mux-LdS-B

Mux-LdS-C

RA

LA

LL

V+

VLdsOff

VLdsOff

VLdsOff

VLdsOff

VLdsOff

f+1.24V

fVcc

fVee

f+5V

vRL

+clamp

-clamp

Right-Arm

Left-Arm

An-ECG

Sw-RLD-RA

Sw-RLD-LA

Sw-RLD-LL

Sw-RLD-RL

Sw-RLD-V

fVcc

fVcc

fVee

fVee

fVcc

EEE

E E E

E

E

E

E

E

E

E

E

E

EE

E

E

E

E E E E E

EEEEE

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

S

S

S

S

S

E

E E

E

E

E

fVeefVee

fVee

E

fVcc

fVcc

fVcc

fVee

fVcc

fVcc

fVcc

fVee

fVee

fVee

fVee

fVcc

fVee

fVcc

fVcc

fVee

fVcc

fVee

fVcc

fVee

fVee

fVcc

R50610K

C520.047uF

TP542

R55922Meg

R51710K

R50710K

R55530.1K

C530.047uF

C525.047uF

TP505

+

-

U507BMC34002

5

67

84

R556

10K

C526.047uF

C506220pF

C543.047uF

+

-

U507AMC34002

3

21

84

C517.01uF

TP539

C528.047uF

N501LAMP NEON

Q5042N7002

3

1

2

R54410K

TP501

C532.047uF

R50151.1K

TP557

R56134.8K

D502MMBD1503A

1

3

2

C527.047uF

C501220pF

R56334.8K

TP538

R54710K

C531.047uF

R50810K

R562464K

C536.01uF

R549110K

TP540

TP524

C533.047uF

TP518

TP530

R5521K

TP509

R56022Meg

C529.047uF

TP559

R55173.2K

TP551

R50922Meg

TP502

D503MMBD1503A

1

3

2

N502LAMP NEON

TP517

R52610K

C507220pF

TP533

TP521

R50251.1K

C502220pF

TP556

Q5052N7002

3

1

2

+

-

U501AMC34002

3

21

84

R51010K

TP513TP511

R51910K

+

-

U502BMC34002

5

67

84

C541330pF

TP543

R5201.21K

+

-

U508BAD712

5

67

84

C539330pF

R51122Meg

R5481Meg

N503LAMP NEON C515

3.3uFC508220pF

C5441000pF

TP555

TP522

R55722Meg

R55019.6K

TP549

TP550

D501MMBD1503A

1

3

2

R50351.1K

-

+U509LMC7101

4

31

25

TP515

TP503

D504MMBD1503A

1

3

2

C503220pF TP531

TP537

R51210K

TP527

+ C5354.7uF

TP512

Q5022N7002

3

1

2

+ C5344.7uF

C523.047uF

TP519

C519.047uF

R52110K

R54510K

TP510

R51322Meg

TP523

C5381000pF

R52310K

TP536

J501CON6

123456

R553100K

TP504

R51410K

C504220pF

U504

DG202CSE

31

1416

119

68

1345

2

15

10

7

S1IN1

S2IN2

S3IN3

S4IN4

V+V-GND

D1

D2

D3

D4

TP558

R5241.21K

TP508

R51522Meg

TP535

N504LAMP NEON

TP520

R5181.21K

+

-

U503AMC34002

3

21

84

R50451.1K

R5221.21K

D5065.1V

13

TP514

C509220pF

TP547

+

-

U501BMC34002

5

67

84

TP526

C510220pF

+

-

U503BMC34002

5

67

84

D5075.1V

1 3

C511220pF

TP553

C5401000pF

N505LAMP NEON

R565121K

R564464K

C512220pF

TP507

C513220pF

D505BAV99L

1

3

2

R51610K

+

-

U502AMC34002

3

21

84

R50551.1K

R530 10K

C542220pF

C505220pF

R531 10K

C5451000pF

TP532

R55822Meg

R533 10K

R5271K

TP554

R535 10K

TP506

C5140.1uF

+

- U508AAD712

3

21

84

Q5012N7002

3

1

2

TP525

R536 10K

C516.047uF

R52851.1K

TP560

TP552

R537 10K

TP516

R52510K

TP548

C518.047uF

R532 10K

R529 10K

C522.047uF

C521.047uF

R534 10K

TP529

U5054051

131415121524

611109

3

168 7

X0X1X2X3X4X5X6X7

INHABC

X

VD

DV

SS

VE

E

TP561

C524.047uF

R54610K

TP528

U5064051

131415121524

611109

3

168 7

X0X1X2X3X4X5X6X7

INHABC

X

VD

DV

SS

VE

E

Page 134: Welch Allyn Medical Division - frankshospitalworkshop.comfrankshospitalworkshop.com/.../WelchAllyn_Atlas... · Atlas Operator’s Manual, contact: Customer Service Welch Allyn, Inc.

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

PWM A/DConverter

833uSec

-5V

(U604-10)

IntegratorInput

A/D Mux

+5V

(U602-7)

Serial/ParallelControl Data

PWM-Out

ComparatorInputs

PWM-timer

IsolationBarrier

52uSec

Analog In

TemperatureAmplifier

0.1%

TemperatureThermistor

MuxB

MuxA

U605 U606

620017.dsnRick Myers

Rick Myers

Mar 5, 1999

Mar 5, 1999

3/15/99JAC5-39121 LPP

L. Phillips

Z. Psenicnik

J. Bello

3/16/99

3/16/99

3/16/99

U608 U609

U601

U603

U608 U609U603U602

U602U601

B See ECN worksheet 5-39455 LPP 4/27/99

DImprovements for ESD, RFI,and Fast Transients, CorrectRespiration Diff-Amp Topology

LPP

6/24/995-39821 LPP

Mods to U2 clock line, Respgain amp, ECG supply andNVRAM pullup

E 7/9/99LPP5-39936

LPP

620017 E

ECG A/D and Interface

C

6 8Wednesday, July 14, 1999

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

U605-out

U60

3out

Mux-A/D-B

U610-6U

602-

7

iso604-a

U60

2-5

iso601-a

Mux-A/D-C

Mux-A/D-A

U602-3

iso602-a

U60

4-8

Q60

1-e

U604-6

D601-2

U604-10

U608-2

U608-3

SW-RL-V

U601-7

Resp-LdsOff

Sw-RespReset

MuxB

U604-4iso603-a

U612-6

U60

2-2

Temp-In

MuxA

Patient-Temp

MonBw

U601-2

U601-1

U601-3

U608-1

U604-2 U613-6U60

4-1

U60

4-3

U611-6U60

4-5

U605-12

FE-Data-In

f+1.24V

An-ECG

LL

Mux-LdS-B

LA

FE-PWM-ADC

FE-ADC-Clock

Mux-LdS-A

RA

V+

Mux-LdS-CFE-Data-Clock

vRL

iso+5Vdig+5V

+Clamp-Clamp

f+1.24V

An-Resp

Resp-DC

f+1.24V

SpO2-Reset

Sw-MonBw

+5V

+5V

iso+5Vdig

+5V

f+5V

Resp-OfffVee

fVcc

Resp-Reset

SW-RLD-V

SW-RLD-RLSW-RLD-LL

SW-RLD-LASW-RLD-RA

E

f+5V

f+5V

ED

ED

E

fVee

E E

f+5V

fVcc

ED

f+5V

fVcc

E

f+5V

E

E

ED

E

iso+5Vdig

E

E

fVee

fVccfVee

fVcc

fVcc

fVcc

ED ED

E

E

iso+5Vdig

ED

iso+5Vdig

iso+5Vdig

E

iso+5Vdig

f+5V

ED

f+5V

ED

ED

ED

EE E

E E E

E E

E

E

E E

fVee

fVcc

fVee

fVcc

fVee

fVee

fVcc

fVee

fVee

fVcc

fVcc

ED

ED

ED

E

U60674HCT595

14

1110

1213

151234567

9

168

SER

SRCLKSRCLR

RCLKG

QAQBQCQDQEQFQGQH

QH

VC

CG

ND

TP621

U604F74HCT04

13 12

147

TP603

TP624

TP639

R63010K

C638.047uF

R6251K

U604A74HCT04

12

147

U6094051

131415121524

611109

3

168 7

X0X1X2X3X4X5X6X7

INHABC

XVD

DV

SS

VE

E

C637.047uF

R60410K

C6461000pF

C624.047uF

R60346.4K

TP642

R60110K

TP623

R60273.2K

R6315.11K

R6053.48K

R62346.4K

TP636

R607464K

C632.047uF

C645100pF

J601

CON2

12

R6081K

TP631

U611HCNW4503

2

3

8

6

5

+

- U602LM311

2

37

5 64 1

8

U613HCNW4503

2

3

8

6

5

TP640

Q601MMBT3904L

3

1

2

U612HCNW4503

2

3

8

6

5

TP637

C629.047uF

R6116.19K

TP641

TP604

R610511

TP633

TP616

R6136.19K

U60574HCT595

14

1110

1213

151234567

9

168

SER

SRCLKSRCLR

RCLKG

QAQBQCQDQEQFQGQH

QH

VC

CG

ND

U604C74HCT04

56

147

C640.047uF

C603680pF

R621215

C639.047uF

TP629

TP617

C6420.1uF

U604D74HCT04

9 8

147

R6156.19K

C6410.1uF

TP618

C631.047uF

TP643

TP628

TP627

R62246.4K

+ C6094.7uF

U604E74HCT04

11 10

147

U610HCNW4503

2

3

8

6

5

R619619

TP632

R620619

TP635

C633.01uF

C6362200pF

R62451.1K

C625.047uF

TP625

C601

1000pF

+

-

U601AMC34072

3

21

84

C626.047uF

C627.047uF

TP638

TP630

TP610

C634 .01uF

R6325.11K

R6172.15K

TP611

C647100pF

TP601

TP626

+

-

U608AAD712

3

21

84

C6280.1uF

D601MMBD1503A

1

3

2

R6261K

C623.047uF

R62910K

TP615

C635 .01uF

C621

0.1uF

TP609

C644220pF

+

-U607BLM393

5

67

84

+ C6144.7uF

C622.047uF

+

-U607ALM393

3

21

84

+

C6304.7uF

TP612

D602BAV99L

1

3

2

U604B74HCT04

34

147

TP613

+

-

U601BMC34072

5

67

84

TP605

C643220pF

TP614

TP606

R627 1.21K

U6034051

131415121524

611109

3

168 7

X0X1X2X3X4X5X6X7

INHABC

XVD

DV

SS

VE

E

TP620

TP607

R6063.48K

R62810K

+

-

U608BAD712

5

67

84

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A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

Serial I/Oconnector

IsolationBarrier

Isolated SupplySerialCommunication

620017.dsnRick Myers

Rick Myers

Mar 5, 1999

Mar 5, 1999

3/15/99JAC5-39121 LPP

L. Phillips

Z. Psenicnik

J. Bello

3/16/99

3/16/99

3/16/99

B See ECN worksheet 5-39455 4/27/99LPP LPP

Improvements for ESD, RFI,and Fast Transients, CorrectRespiration Diff-Amp Topology

D 6/24/995-39821 LPP

Mods to U2 clock line, Respgain amp, ECG supply andNVRAM pullup

E 7/9/99LPP5-39936

LPP

620017 E

Serial Communication

C

8 8Wednesday, July 14, 1999

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

iso802-a

R80

3-2

ISO801-2

ISO801-4

ISO801-1

U80

1-ct

R815-1

U801-1

U802-15

T801-1

T801-4

U801-5

TxU802-3Rx

U802-2

T801-5

q801-e

iso803-a

q802-e

contact2

contact1

iso803-c

T801-2

R81

2-1

q802-b

+5V

RVcc

+5V

RVee

RS423Rx

+5V

R+5V

R+5V

RVee

R+5V RVcc

R+5V

NurseCall

RS423Tx

+Vfuse

R+5V

+5V

R

R

R

R

R

R

RR

R

R

RR

R

R

RR

R

R

C808.047uF

TP806

U801MC34063AD

53

78

1

26

4

COMPTCAP

IPKIDC

ISWC

ISWEVcc

GN

D

D803BAV99L

1

3

2

U805

TPS5908

1

2

3

4

7

6

LED

COMP

GND

FB

C

E

TP808

R8045.11K

C809.047uF

U803HCNW4503

2

3

8

6

5

Q801MMBT3904L

3

1

2

C802220pf

U804HCNW4503

2

3

8

6

5

C806.01uF

C814680pF

TP810

TP807

R813619

R8116.19K

R8076.19K

D801BAV99L

1

3

2

K801RELAY SPST

2

41

3

D802BAV99L

1

3

2

R8053.16K

TP809

R8061K

+ C803100uF

R812215

R8011

C813470pf

R819 215

Q802MMBT3904L

3

1

2

R8025.11K

R810619

+ C805100uF

+ C804100uF

TP802

R817 215

U802TL145406

2

4

6

3

5

7

15

13

11

14

12

10

116

89

1RA

2RA

3RA

1DY

2DY

3DY

1RY

2RY

3RY

1DA

2DA

3DA

Vdd

Vcc

Vss

GN

D

C816.047uF

+C8011uF

J801

RJ-45

12345678

TP804

C812680pF

R80310K

C815.047uF

C810.047uF

TP805

TP801

R808619

T801

IsoXfmr

5

8

1

2

3

4

TP803

R816215

C807470pf

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Description Tool # CompanyModified AC Cord T-16761 Welch AllynSafety Analizer 601 Pro Series BioTekHi-Pot Model 3500D Associated ResearchAC Power Source Model EW 371 Elgar

Equipment for perfoming Safety Tests on the Atlas Monitor:

CAUTION : High Voltages are generated andused during the HI-Pot or Dielectric Test. DONOT OPERATE THIS EQUIPMENT AND ORRUN THIS TEST UNLESS YOU HAVE BEENPROPERLY TRAINED AND ARE QUALIFIEDON THIS PROCEDURE!

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Test Procedure for Atlas Safety Test Station

Leakage Test Procedure:

1. Verify that all plugs removed from the Elgar AC Power Source and the Biotek 601 Pro Safety Tester2. Turn on EW371 Elgar Supply3. Set Voltage and Frequency (240VAC, 50 Hz) after self-test has completed Key strokes: [Shift] [Range (300v)] [Shift] [2] [4] [0] [Enter] [V/F (frequency)] [5] [0] [Enter] [Out]4. Plug in Biotek 601 Pro to front panel and power up Biotek.5. Toggle [Class/Type] button until Class I, Type CF displayed on Main Menu if necessary.6 Select Test Standard IEC601-1 by pressing the [More] key and then toggling the [Down Arrow]. Then select with [Enter]. Once selected press [ESC]7. Connect ECG leads to Biotek in accordance with color code directly above the top row of sockets: AP/RA (wht),

RL (grn), LA (blk), LL (red), V1 (brn)8. Select Patient Leakage Current Connections: All-Earth[up/down arrows], Norm Pol [polarity], Earth[earth],

L2[L2], Class I Type CF. (no indicator lights are on in outlet control panel [dual rev. pol, no earth, no L2: all off])9. Select Patient Leakage #7 to provide AC power to Biotek AC socket.10. Turn on Atlas Monitor.11. Press Mains on Applied Part #8.11. Record All-Earth:Norm and All-Earth:Rev result (pass/fail) on Atlas Monitor Test Result form. If failure, then place unit on Debug shelf.12. Press Patient Leakage uA #7.13. Record Patient Leakage result (pass/fail) on Atlas Monitor Test Result form. If failure, then place unit on Debug

shelf.14. Turn off Atlas Monitor.15. Remove ECG cable from Atlas.16. Remove AC cord if no printer and proceed to Dielectric Tests.17. If printer, continue to Ground Continuity Test.

Ground Continuity Test (Printer Models Only)

1. Press [Earth Resistance] key (#4)2. Toggle [Test Current] key (#5) until Test Current is 1A if necessary3. Plug red test lead from Front Panel red jack to green jack4. Press [Cal] to calibrate test lead5. After calibration complete, remove red lead from green jack and place red clip on red lead tip6. Attach red lead from 601Pro to printer motor case7. Press [Earth Resistance] (#4)8. Record Earth Resistance result (pass/fail) on Atlas Monitor Test Result form. If failure, then place unit on Debug shelf.9. Press [ESC] key10. Remove red lead from jack and printer motor11. Disconnect AC cord from Atlas and continue to Dielectric Test.

Leakage Test Procedure after First Run of Day

1. Verify Output Voltage and Frequency of EW371 Power Supply (240VAC, 50 Hz)2. Plug power cord from Biotek 601Pro into Atlas Monitor.3. Verify ECG Lead Connection to Biotek 601 Pro.4. Connect ECG plug from Biotek to Atlas Monitor.5. Select Patient Leakage #7 to provide AC power to Biotek AC socket.6. Turn on Atlas Monitor.7. Press Mains on Applied Part #8.

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8. Record All-Earth:Norm and All-Earth:Rev result (pass/fail) on Atlas Monitor Test Result form. If failure, then place unit on Debug shelf.9. Press Patient Leakage uA #7.10. Record Patient Leakage result (pass/fail) on Atlas Monitor Test Result form. If failure, then place unit on Debug

shelf.11. Turn off Atlas Monitor.12. Remove ECG cable from Atlas.13. Remove AC cord if no printer and proceed to Dielectric Tests.14. If printer, continue to Ground Continuity Test.

Ground Continuity Test (Printer Models Only)

1. Attach red lead from 601Pro to printer motor case2. Press [Earth Resistance] (#4)3. Record Earth Resistance result (pass/fail) on Atlas Monitor Test Result form. If failure, then place unit on Debug

shelf.4. Press [ESC] key5. Remove red lead from jack and printer motor6. Disconnect AC cord from Atlas

At conclusion of last test of day, turn off Biotek 601Pro and Elgar power supply EW371.

Dielectric Test

Three tests will be performed for Dielectric Withstand.1. Mains to Instrument Common:1500 VAC2. Mains to ECG Output: 4000 VAC3. Mains to Isolated RS232 (Models 210/220 only):

4000 VAC

Mains to Instrument Common: 1500 VAC

A. Connect the modified AC cord (Connection 1: hot and neutral joined, Connection 2: earth ground) to the back of the Atlas Monitor.B. Connect the black clip lead to the return jack of the Hypot 3500 Dielectric tester.C. Connect the red clip lead to the HV jack of the Hypot 3500 Dielectric tester.D. Turn on 3500D. Press [Set]E. Set voltage to 1500 VAC with [up]/[down] buttonsF. Press [Set]G. Set current limit to 3 mA with [up]/[down] buttons

CAUTION : High Voltages are generated andused during the HI-Pot or Dielectric Test. DONOT OPERATE THIS EQUIPMENT AND ORRUN THIS TEST UNLESS YOU HAVE BEENPROPERLY TRAINED AND ARE QUALIFIEDON THIS PROCEDURE!

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H. Press [Set]I. Set Timer to 60 seconds with [up]/[down] buttonsJ. Press [Set]K. Set Continuity off.L. Scroll through settings with [Set] button.M. When settings verified, press [Exit] button.N. Connect Red Clip lead to joined Hot and Neutral lines of the test connectorO. Connect Blk Clip lead to grd wire of the modified AC cord.P. Position electrical leads at rear of test benchQ. Press green [Test] button. Wait for 60 seconds.R. Record current: _______mA

Mains to ECG Output: 4KV

A. Plug modified ECG cables into ECG connector at front of Atlas unit.B. Connect the modified AC cord (hot, neutral, and earth ground connected) to the back of the Atlas Monitor.C. Connect the black lead banana plug to the return jack of the Hypot 3500 Dielectric tester.D. Connect the red lead banana plug to the red jack of the Hypot 3500 Dielectric tester.E. Turn on 3500D. Press [Set]F. Set voltage to 1500 VAC with [up]/[down] buttonsG. Press [Set]H. Set current limit to 3 mA with [up]/[down] buttonsI. Press [Set]J. Set Timer to 60 seconds with [up]/[down] buttonsK. Press [Set]L. Set Continuity off.M. Scroll through settings with [Set] button.N. When settings verified, press [Exit] button.O. Connect the red clip lead from HV Jack of Hypot 3500D to modified AC connector cord with all lines connected(Hot, Neutral, and Ground)P. Connect Blk Clip lead to common connection of joined ECG leadsQ. Position electrical leads at rear of test benchR. Press green [Test] button. Wait for 60 seconds.S. Record current: _______mA

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Mains to Isolated RS232 (Models 210/220 only): 4000 VAC

A. Plug modified RS232 cable (all wires connected) into the RS232 connector at rear of Atlas unit.B. Connect the modified AC cord (hot, neutral, and earth ground connected) to the back of the Atlas Monitor.C. Connect the black lead banana plug to the return jack of the Hypot 3500 Dielectric tester.D. Connect the red lead banana plug to the HV jack of the Hypot 3500 Dielectric tester.E. Apply power to 3500D. Press [Set]F. Set voltage to 1500 VAC with [up]/[down] buttonsG. Press [Set]H. Set current limit to 3 mA with [up]/[down] buttonsI. Press [Set]J. Set Timer to 60 seconds with [up]/[down] buttonsK. Press [Set]L. Set Continuity off.M. Scroll through settings with [Set] button.N. When settings verified, press [Exit] button.O. Connect the red clip lead from HV Jack of Hypot 3500D to modified AC connector cord with all lines connected(Hot, Neutral, and Ground)P. Connect Blk Clip lead to common connection of joined RS232 leadsQ. Position electrical leads at rear of test benchR. Press green [Test] button. Wait for 60 seconds.S. Record current: _______mA

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Atlas Test Results

Patient Leakage test (10uA Maximum)Mains on applied part (50 uA Maxlmum)tarth Resistance (printer only) (.200 Ohms Max)

Dielectric Withstand Test ResultsMains to tarth @ 1.5kV (3mA Max)Mains to tarth @ 4.0kV (3mA Max)Mains to isolation RS232 @ 4 kV (3mA Max)Other

InitializeBatteryPower SupplyBlood Pressure

SpO2KespirationECG 1ECG 2ETCO,

T emperatureOther

Functional Tests ResultsI I I I

Failure Detail I Repairs Made