EXT TEST SET DRIVE RF OUT
EXT TEST SET DRIVE LO OUT
W59
W63
REAR PANELINTERCONNECTS
FRONT PANELINTERCONNECTS
W13
W41
W1
\15
IF INPUTS
PULSE I/OA20 J20
A20 J202
A20 J602
A20 J802
A20 J402
A20 J2
W98 To A50
To A50
From A46
W99
W97
W103
W113
W113
COMB THRU IN (J10)
COMB ARM IN (J9)
SW SRC OUT (J11)
SW SRC OUT (J8)
Port 1
Port 3
Src 2
W3
W9
W45
W46
W47
W2
From A47
\5
W51
W54
OPTION 029
W149
W150
2port
OPTION 224
W146
W7
W5
W145
OPTION 201
OPTION 217, 219, 222, 224
W117
W116
W27 (201)W25 (217, 219, 222, 224)
W137 (029)
OPTION 201
OPTION 217, 219, 222, 224
W114
W115
W40 (201, 217, 219)W154 (222, 224)
W27 (201)W25 (217, 219, 222, 224)
W48 (201)W37 (219,224)
W64
W65
N5241B, N5242B and N5249B 2-Port Overall Block Diagram
W138 (029)
W137 (029)
W136 (029)
Including Options 201-Standard; 217-Attenuators; 219-Attenuators and Bias Tees; 222-Second Source, Combiner, and Bypass Switches without Bias Tees; 224-Second Source, Combiner, and Bypass Switches with Bias Tees; 029-Noise Figure Measurements
10 MHz REF
10 MHz REF
15 MHz
PCIBRIDGE
J1
A
B
J4
J5
J3
J6
R
C/R1
D/R2
J2
DSP
X6 PULSEDRIVE
ADC
CONTROLLERGPIB
TALKER/LISTENERGPIB
VGA
LAN
MAINCPU
EEPROM
ROM RAM
VIDEO RAM
A55HARD DISKDRIVE
A18GPIB
A15 MIDPLANEA16POWERSUPPLY
AC LINE IN
VIDEO PROCESSOR
A17 CPU
USBINTERFACE
GPIB PORTINTERFACE
GPIB PORTINTERFACE
VGAINTERFACE
10/100 BASE-TETHERNET
USB x 4
A14SYSTEMMOTHERBOARD
9 MHz
DITHERNOISE
RAM
\4
TO A20
15 MHzADC
9 MHz
15 MHzADC
9 MHz
15 MHzADC
9 MHz
15 MHzADC
9 MHz
FRONT PANELINTERCONNECTS
A3DISPLAY
A2USB BD
USB x 4
A1 FRONT PANEL INTERFACE BOARD
DISPLAYPROCESSOR
INVERTERPOWER
USBHUB
KEYPAD
RAM
FLASH
SPEAKER
DIRECT CONNECTTO A4, A5, A7, A8,
A10, A12, A13,A14, A15, A17
LOCAL DIGITAL BUS
POWER BUS
A19TEST SETMOTHERBOARD
RIBBON CABLE CONNECTIONSTO A20, A21, A23, A24,
A33-A37, A42-A49
A12 SIGNAL PROCESSINGADC MODULE (SPAM)
A59 NOISE DOWNCONVERTER
RIL
0.75-1.5 GHz
350-750 MHz
25-60 MHz
10-25 MHz
150-350 MHz
60-150 MHz
1.5-3.0 GHz
A7 NOISE RECEIVERW171
W172
W173
RIL
31.6 MHz
31.6 MHz
12 MHz
TO A14 ADC
OPTION 029
J4
3.0-6.0 GHz
3.0 GHz
J6
J1
26.0-32.0 GHz
32.0-40.0 GHz
40.0-50.0 GHz
X2
J2W175HIGH BANDOVERLOADDETECTOR
0.010-6.00 GHz
26.0-36.0 GHz
6.0-12.0 GHz
12.0-26.0 GHz
36.0-50.0 GHz
J1
J5
J3
LOW BANDOVERLOADDETECTOR
Bx = ACTIVE SOURCE BAND
SERIAL TEST BUS NODES
MIXED POWER AND CONTROL SIGNALSFROM THE A23 TEST SET MOTHERBOARD
LOCAL DIGITAL BUS
POWER BUS
HIGH DENSITY DATA BUS
ALC1.0-2.0 GHz
2.0-3.0 GHz
5.33-6.75 GHz
6.75-8.0 GHz 10.66-13.51 GHz
8.0-10.66 GHz
3.0-4.0 GHz
4.0-5.33 GHz
J1207
B21-36
-10 to +10 dBm
0.5-1.0 GHz
÷2
X2
÷4
A4 13.5 GHz SOURCE 1 SYNTHESIZER2-4 GHz
B14-15
B12-13
B16-17
B18
B19-20
50 MHzREF
J5
0.25-0.5 GHz
ƒFrac-NLogic
X2
MAIN
B24-28,31-36,
B23,29-30
B26-28,34-36,
B24-25,31-33,
B22,26-28,34-36
B21,24-25,31-33
0.01-13.51 GHz
B2-51
÷8
DDS
250 MHz
B2-11
10
16,17
DDS=Direct Digital Synthesizer
φ
∫
ALC1.0-2.0 GHz
2.0-3.0 GHz
5.33-6.75 GHz
6.75-8.0 GHz 10.66-13.51 GHz
8.0-10.66 GHz
3.0-4.0 GHz
4.0-5.33 GHz
J1207
B21-36
-10 to +10 dBm
0.5-1.0 GHz
÷2
X2
÷4
A13 13.5 GHz SOURCE 2 SYNTHESIZER2-4 GHz
B14-15
B12-13
B16-17
B18
B19-20
50 MHzREF
J5
0.25-0.5 GHz
ƒFrac-NLogic
X2
MAIN
B24-28,31-36,
B23,29-30
B26-28,34-36,
B24-25,31-33,
B22,26-28,34-36
B21,24-25,31-33
0.01-13.51 GHz
B2-51
÷8
DDS
250 MHz
B2-11
13
19,20
DDS=Direct Digital Synthesizer
φ
∫
ALC1.0-2.0 GHz
2.0-3.0 GHz
5.33-6.75 GHz
6.75-8.0 GHz 10.66-13.51 GHz
8.0-10.66 GHz
3.0-4.0 GHz
4.0-5.33 GHz
J1207
B21-36
-10 to +10 dBm
0.5-1.0 GHz
÷2
X2
÷4
A11 13.5 GHz LO SYNTHESIZER2-4 GHz
B14-15
B12-13
B16-17
B18
B19-20
50 MHzREF
J5
0.25-0.5 GHz
ƒFrac-NLogic
X2
MAIN
B24-28,31-36,
B23,29-30
B26-28,34-36,
B24-25,31-33,
B22,26-28,34-36
B21,24-25,31-33
0.01-13.51 GHz
B2-51
÷8
DDS
250 MHz
B2-11
15
22,23
DDS=Direct Digital Synthesizer
φ
∫
10 MHz REF10 MHz
50 MHz REF10 MHzHIGH STAB
OCXO
100 MHz
A10 FREQUENCY REFERENCE
10 MHz0-200 Hz
DAC
J3
J2
J5
J4
J8NC
J7
J6
50 MHz
10 MHz
ƒφ
∫
÷2
÷10
PulseModulator
ALCModulator
P1
P2 P6
A5 26.5 GHz SOURCE (SOURCE 1)
13.5-16 GHz
16-20 GHz
20-26.5 GHz
20-26.5 GHz
12.8-20 GHz
8.5-12.8 GHz
5.33-8.5 GHz
3.2-5.33 GHz
10 MHz-3.2 GHzPIN-switched LPF
3.2 GHz
B29-31,
37-38,45-48
B2-28
B20-28
B2-19
P5
P3
B2-19
B29-30,37,
45-46
B31,38,47-48
B2-19
B2-19
B20-21
B22-24
B25-27
B28
B20-28,32-36,39-44
B20-28
B20-48
B20-28
B29-48
X2
0.01-13.5 GHzB2-28
OUT 1
0.01-13.5 GHzB2-28
OUT 2
ALCModulator
ALCModulator
PulseModulator
P4J402
29
8
9
PulseModulator
ALCModulator
P1
P2 P6
A8 26.5 GHz SOURCE (SOURCE 2)
13.5-16 GHz
16-20 GHz
20-26.5 GHz
20-26.5 GHz
12.8-20 GHz
8.5-12.8 GHz
5.33-8.5 GHz
3.2-5.33 GHz
10 MHz-3.2 GHzPIN-switched LPF
3.2 GHz
B29-31,
37-38,45-48
B2-28
B20-28
B2-19
P5
P3
B2-19
B29-30,37,
45-46
B31,38,47-48
B2-19
B2-19
B20-21
B22-24
B25-27
B28
B20-28,32-36,39-44
B20-28
B20-48
B20-28
B29-48
X2
0.01-13.5 GHzB2-28
OUT 1
0.01-13.5 GHzB2-28
OUT 2
ALCModulator
ALCModulator
PulseModulator
P4J402
30
11
12
A21 LO MULTIPLIER/AMPLIFIER 26.5 (HMA26.5)
B2-28,36-39
B29,40-41
B30-32,42-45
B33-35,46-48
B29-35,40-48
FROM A19
26 GHz
13 GHz
0.013-13.518 GHz
13.518-26.508 GHz
0.013 -26.508 GHz
13.5-15.4 GHz
15.4-20.0 GHz
20.0-26.5 GHz
X2
14
∫
A19 TEST SET MOTHERBOARD
HANDLER I/O HANDLER I/OINTERFACE
TEST SET I/O
PWR I/O
TEST SET I/O INTERFACE
PWR I/OINTERFACE
MEAS TRIG IN LOCALDIGITAL BUS
TO A34 THRU A37,A42 THRU A49
MEAS TRIG RDY
MEAS TRIG IN
AUX TRIG 2 OUT
AUX TRIG 2 IN
AUX TRIG 1 OUT
AUX TRIG 1 IN
28 V28 V
AUX TRIG 2 OUT
AUX TRIG 2 IN
AUX TRIG 1 OUT
AUX TRIG 1 IN
MEAS TRIG RDY
POWERBUS
\9
\25
\ 36
DC BIAS 3 TO A43
BIAS 4 IN
BIAS 2 IN
BIAS 3 IN
BIAS 1 IN
\2
DC BIAS 1 TO A42\2
DC BIAS 4 TO A44\2
DC BIAS 2 TO A45\2
J541
J542
J543
J544
A33 REFMIXERSWITCH
W36
W35 W30
RCVR R1 IN
SOURCE OUT
REF 1
W30
RCVR A IN
CPLR ARM
W31
0-35 dB
A42 STEPATTEN
RCVRA INTO A23 A
W133 (029) W132 (029)
Port 1
OPTION 201
OPTION 217, 219, 222, 224
W88 (219,224) W87 (219,224)
W30
RCVR B IN
CPLR ARM
W30
RCVR R2 IN
SOURCE OUT
W50
0-35 dB
A45 STEPATTEN
RCVRB INTO A23 B
W135 (029)
Port 2
REF 2
OPTION 201
OPTION 217, 219, 222, 224
W94 (219,224) W93 (219,224)
W30
W112From rear panelSW TSET IN (J1)
From W9W109
W111
W110
To rear panel SW SRC OUT (J2)
A49 BYPASSSWITCH
50
A28 RECEIVERBRIDGE
OPTION 201, 217, 219
OPTION 222, 224
To rear panelSW SRC OUT
From rear panel COMB THRU IN (J10)From rear panel COMB ARM IN (J9) W99
A25 RECEIVERBRIDGE
OPTION 222, 224
OPTION 201, 217, 219
W4
FromW11
W95
W100
W97
W98
W96
A46 BYPASSSWITCH
A50COMBINER
50
IF INPUTS
A
R
D/R2
C/R1
B
W64
W65
W66
W67
Port 2
OPTION 222, 224
DRIVETSET
EXT
LO OUT (J5)
W46
To A47
W112
W111
W104
W113
SW TSET IN (J1)
SW SRC OUT (J2)
From A49
To A49
0.01 - 26.5 GHzW47
3.2 - 19 GHz
LOAD
LOAD
LOAD
RF1 OUT (J6)
SW TSET IN (J7)
W69
W6810 MHz
REF OUT
10 MHzREF IN
W30
SOURCE OUT
CPLR THRU
A32TEST PORTCOUPLER
Port 2
PORT 2
A29TEST PORTCOUPLER
SOURCE OUT
W30
CPLR THRU
Port 1
PORT 1
W104
W103
A47 BYPASSSWITCH
50
From rear panelSW TSET IN (J7)
W101
To rear panel SW SRC OUT (J8)
LOCALDIGITAL
BUS
POWERBUS
LOCALDIGITAL
BUS
POWERBUS
LOCALDIGITAL
BUS
POWERBUS
LOCALDIGITAL
BUS
POWERBUS
LOCALDIGITAL
BUS
POWERBUS
LOCALDIGITAL
BUS
POWERBUS
W85
A41BIAS TEE
DC BIAS 2
ToPort 2W30
W86
W24
A37 STEPATTEN
0-50 dB
W83 W84
W30
ToPort 2
W73
A38BIAS TEE
DC BIAS 1
ToPort 1W30
W74
W12
A34 STEPATTEN
0-50 dB
W71 W72
W30
ToPort 1
A53 BYPASSSWITCH
50
A37 STEPATTEN
0-50 dB
A54 BRIDGE
W126 W127
W130
W30
ToPort 2
W128
W129W131
OPTION 029
A52 BYPASSSWITCH
50
A34 STEPATTEN
0-50 dB
W121 W122
W30
ToPort 1
W125
W123
W124
1
2
3
3
4
4
B21-23,29-30
J102
B21-23,29-30
J102
B21-23,29-30
J102
OPTION 201, 217, 222
OPTION 219, 224
OPTION 219, 224
OPTION 201, 217, 222
SRC 2 OUT 1
SRC 2 OUT 2
W13
THRU A14
R1
R2
R3
R4
\4
A24 IF MULTIPLEXER
PULSEMODULATION
LOGIC
SOURCEPULSE
DRIVE OUT
Pulse A
Main IF A
Main IF B
Main IF R
Main IF C
Main IF D
Ext IF In A
Ext IF In B
Ext IF In R
Ext IF In C
Ext IF In D
Aux R3
Aux R4
AUX R2
Aux R1
P1
P201
P601
P801
P411
P412
P413
P414
P3
P203
P603
P803
P403
A
B
D/R2
R
IF OUT A
IF OUT B
IF OUT C/R1
IF OUT D/R2
IF OUT R
PULSE DRIVE
C/R1
PULSEGATES
10.7 MHz
P2
IF
OU
T A
P2
02
IF
OU
T B
P4
02
IF
OU
T R
P6
02
IF
OU
T C
P8
02
IF
OU
T D
P1
00
1D
ET
OU
T
P1
FROM A23
FROM A16THRU A18
J8
02
Ext
IF
In D
J6
02
Ext
IF
In C
J4
02
Ext
IF
In R
J2
02
Ext
IF
In B
J2
Ext
IF
In A
LFE IF A
LFE IF B
LFE IF C
LFE IF D
PULSEGATES
10.7 MHzPulse B
PULSEGATES
10.7 MHzPulse R
PULSEGATES
10.7 MHzPulse C
PULSEGATES
10.7 MHzPulse D
LFE IF R
P8
04
LF
E I
F D
P6
04
LF
E I
F C
P4
04
LF
E I
F R
P2
04
LF
E I
F B
P4
LFE
IF A
70.0 MHz
A27 MIXER BRICK (1)
A A
R1 R1
R2 R2
B B
70.0 MHz
70.0 MHz
70.0 MHz
IL
R
FROMA23
IL
R
IL
R
IL
R
IF = 7.438 MHz for CW Freq > 53 MHzIF = 0.826 MHz for CW Freq < 53 MHz
EXT TSET DRIVE LO OUT
W170
W80
W53 ToA27
W52
A26 SPLITTER
WITHOUT OPTION 029
OPTION 029
FromA25