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Internal Use 2
Objectives
Upon completion of this course, you
will be able to Understand preparation for
commissioning and testing
Understand Site commissioning
Understand system commissioning
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Internal Use 3
Chapter1 Preparation for commissioning and
testing
Chapter2 Site commissioning
Chapter3 Networking commissioning
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Internal Use 4
Commissioning Conditions Check
Check the following items before commissioning: The equipment is well installed and has passed the hardware
installation check.
The OptiX iManager T2000 network management system
(T2000 for short) is installed in both the central equipment room
and the laptop, and it has been tested. The OptiX iManager T2000-local craft terminal (LCT for short) is
installed in the laptop and has been tested.
The equipment in each station is provided with two power
supplies.
The equipment is well connected with the external alarmequipment (if needed).
The ODF in each station is installed and is ready for use.
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Internal Use 5
Site commissioning
Item Sub-item
Site commissioning
Checking hardware
Powering on the cabinet
Testing subrack functions
Checking software version
Testing the visual and audible alarm
Checking fiber connection
Setting alarm and performance monitoring
Testing embedded control channel (ECC)
communication
Backing up NE database
Testing equipment restart
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Internal Use 6
Networking Commissioning
Item Sub-item
Networking commissioning
Checking network-wide fiber connections
Testing the supervisory channel
Adjusting optical power
Testing system indices
Testing protection switching
Testing orderwire
Testing bit errors
Configuring servicesVerifying T2000 function
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Chapter1 Preparation for commissioning and
testing
Chapter2 Site commissioning
Chapter3 Networking commissioning
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Checking Hardware
Step Action
1 Checking the Cabinet
2 Checking the Subrack
3 Checking Cable Distribution
4 Checking the Board
For details, refer to OptiX Metro 6100 WDM Multi-Service
Transmission System Installation Manual.
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Powering on the Cabinet
Step Action Index
1 Checking the Fuse Capacity The maximum power consumption of asubrack : 600 W
The fuse capacity of a subrack :20 A
2 Checking the Output Voltage The output voltage of the power supply:38.4 V
and57.6 V (48 V DC20%)
3 Checking the Resistance
(Turn all power switches on
the front panel of the power
distribution box to OFF)
Measure the resistance between NEG1(-) or
NEG2(-) and RTN1(+) or RTN2(+) . The valueshould be .
Measure the resistance between NEG1(-) or
NEG2(-) and protection grounding post. The value
should be .
4 Checking the Resistance
(Turn all power switches on
the front panel of the power
distribution box to OFF)
Measure the resistance between NEG1(-)or
NEG2(-) and RTN1(+) or RTN2(+). . The value
should be more than 20 k.
Measure the resistance between NEG1(-) or
NEG2(-) and protection grounding post (). The
value should be more than 20 k
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Testing Subrack Functions
Step Action Index
1 Powering on theSubrack Check whether the POWER ON indicator on
the DPFU board in the interface area is on
and whether the subrack is powered on.
2 Checking the Fan Check the indicator on the front panel of the fan
tray assembly.
3 Checking Board Indicators Check whether only the green indicator of each
board flashes once every other second.
The yellow indicator on the SCC boards is
constantly on.
4 Testing the RST Button Press the RST button on the SCC board of an
NE to restart it.
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Testing the Visual and Audible Alarm
Step Action Details
1 Testing the ALC Switch Remove the fiber connector from a receiving
optical interface. The NE reports an alarm
and buzzes. Turn the ALC switch down and check whether
the alarm sound stops in three seconds.
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Checking Fiber Connection
Step Action
1 At the client ODF, connect the transmitting (Tx) and receiving (Rx)
optical interfaces of an SDH analyzer with the Rx and Tx optical
interfaces of an OTU board.
2 At the line ODF, loopback the IN and OUT optical interfaces of theFIU board ensuring a 10 dB attenuator.
3 Send optical signals to the OTU board through the Tx optical interface
of the SDH analyzer. And then the Rx optical interface of the SDH
analyzer should receive the signals after loopback. It indicates the fiber
connection is correct.
4 Check the fiber connection of other OTU boards in the same way.
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Continue
Step Action Description
1 Setting Alarm and Performance
Monitoring
Use the T2000 to set performance
and alarm monitoring.
Observe the performance event
as long as possible, at least one
hour.
2 Testing ECC Communication in a
Station
All NEs should be accessed
through NM. If any NE cannot be
accessed, check the fiber
connection or parameter
configuration.
3 Backing Up NE Database The NE database can ensure thatthe SCC unit restores to normal
operation automatically upon data
loss or power failure.
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Testing Equipment Restart
Step Action
1 Switch off the subrack.
2 Switch on the subrack after ten minutes and check whether the boards runnormally.
3 Check whether the services operate normally. Test some typical services and
make sure there is no bit error or abnormal performance event.
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Inspection Items after Site Commissioning
Item Description
SCC The ALC switch is in the upper position.
Orderwire phone The connector of the phone cable is inserted in the corresponding
interface; the ring switch of the phone in ON, the dialing mode is T
and the TALK button is not active.
Board interface The fiber jumper for test purpose is removed and the normal
connection is recovered.
ODF The fiber jumper for test purpose is removed and the normal
connection is recovered.
T2000 NM All loopbacks of the boards are released and the services configured
for test are deleted.
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Chapter1 Preparation for commissioning and
testing
Chapter2 Site commissioning
Chapter3 Networking commissioning
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Network Commissioning
Network commissioning aims to: Connect all NEs in a network in line with the
engineering design scheme.
Test services of the network to verify the
configuration.
Test required functions for the network, such
as orderwire and protection switching.
Test long-term communication quality of the
network through alarm and performance event.
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Checking Network-Wide Fiber Connections
Step Action
1 Measure the optical power . Make sure the FIU boards receive the optical
signal from the opposite station.
2 Measure the optical power from the OUT interface of the FIU.3 Check the fiber connection and the line attenuation between other adjacent
stations in the same way.
In this commissioning sub-item, check the following two items:
Whether the transmitting and receiving optical interfaces of the
line cables are connected correctly.Test required functions for the
network, such as orderwire and protection switching.
Whether the optical attenuation in the line is normal.
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Testing the Supervisory Channel
Step Action
1 Check the fiber connection of the OSC unit
2 Use an optical power meter to measure the transmitting optical power of the
OSC boards. It should range from3 dBm to6 dBm.
3 Use the 10 dB optical attenuator to adjust the actual receiving optical power ofthe OSC boards to30 dBm.
The OptiX Metro 6100 can offer two modes of supervisory:
Whether the optical attenuation in the line is normal. Optical supervisory channel (OSC)
Electric supervisory channel (ESC)
Testing OSC
Testing ESC
When the OTU starts to work and the service is normal, the ESC route is set up.
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Adjusting optical power
the main operation is to use optical attenuators to adjust thefollowing optical power values.:
Input optical power of the optical amplifier at the transmit end.
Input optical power of the optical amplifier at the receive end.
Input optical power of OTU at the WDM side.
Adj ti I t O ti l P f th O ti l
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Adjusting Input Optical Power of the Optical
Amplifier at Transmit End
LWM1
OBUM40
SDH
analyzer
LWM2
LWM3
For stations equipped with optical amplifiers, adjust the optical power of any
single-wavelength in the input signal of the optical amplifier at transmit end to
the prescribed typical value.
The type of
optical
amplifier
Typical value of single-
wavelength input optical
power (dBm)
Gain
(dB)
Input optical power
range (dBm)
Output optical
power range
(dBm)
OAU-C01 21 to1520 to
3332 to 0 12 to 20
OAU-C02 24 to1820 to
3332 to3 12 to 17
OAU-C03 27 to2126 to
3232 to6 6 to 20
OBU-C01 21 23 32 to6 9 to 17
OBU-C03 18 23 22 to3 1 to 20
OPU-C01 21 20 32 to6 12 to 14
OPU-C02 21 20 32 to6 12 to 14
Adj sting Inp t Optical Po er of the Optical
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Internal Use 22
Adjusting Input Optical Power of the Optical
Amplifier at the Receive End
For stations equipped with optical amplifiers, adjust the optical power of anysingle-wavelength in the input signal of the optical amplifier at transmit end to
the prescribed typical value.
At the receive end, adjust the optical power of the multiplexed signal
coming from the line until the single wavelength optical power reaches the
typical value.
The optical power formula is: Pm=Ps + lgN
Pm : Optical power of multiplexed signal
Ps : Optical power of single wavelength signal
N : Number of wavelengths in multiplexed signal
LWM1
OPUD40/
MR2LWM2
LWM3
Adj i h I O i l P f OTU WDM Sid
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Internal Use 23
Adjusting the Input Optical Power of OTU at WDM Side
Adjust the input optical power of OTU at WDM side to the optimal
range:
Received signal rate Receiver laser typeOptimal range for input optical power
(dBm)
2.5 Gbit/s PIN 6 to12
2.5 Gbit/s APD 16 to22
10 Gbit/s PIN 6 to10
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Testing System Indices
Test item Description
OTU
Mean launched power Required
Actual received optical power Required
Receiver sensitivity OptionalReceiver overload Optional
Central wavelength (frequency) anddeviation
Optional
Side mode suppression ratio Optional
20dB spectral width Optional
Optical multiplexer/demultiplexer unit Insertion loss Required
OADM unit
Insertion loss of drop channel Required
Insertion loss of add channel Required
Insertion loss of pass-through channel Required
Optical amplifier
Actual input optical power Required
Actual output optical power Required
Channel gain Required
OSC unit
Launched optical power Required
Actual received optical power Required
OSC operating wavelength Optional
Receiver sensitivity Optional
For indices requirement, refer to OptiX Metro 6100 WDM Mult i -Servic e Transm issio n
System Technic al Manual.
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Testing Protection Switching
The OptiX Metro 6100 supports the following protection modes:
Intra-OTU 1+1 optical channel protection
Inter-OTU 1+1 optical channel protection
Client-side 1+1 optical channel protection
Wavelength cross-connection protection
Optical wavelength shared protection (OWSP)
Optical line protection.
For the working principle of each protection mode, refer to OptiX Metro
6100 WDM Multi-Service Transmission System Technical Manual.
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Internal Use 26
Testing Bit Errors
Testing the 15-Minute Bit Errors of each Optical Channel
Testing the 24-Hour Network-Wide Bit Error
Bit error test should cover all service channels in the network.
There should be no bit error in consecutive 24 hours. To ensure
the 24-hour network-wide bit errors test can be completed
successfully, perform a 15-minute bit errors test to each channel
in advance.
Station A
LWM1SDH
analyzer LWM1
IN
OUT
Tx
Rx Tx
Rx
Station B
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Internal Use 27
Other Items
Configuring Services
For details, refer to OptiX Metro 6100 WDM Multi-Service
Transmission System Configuration Guideand T2000 online
help.
Verifying T2000 Function
For verification items, refer to OptiX iManager T2000
Transmission Network (Subnet Level) Management System
Acceptance Manual.
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