Cisco ONS 15200 Series, Инструкция по установке, настройке и эксплуатации

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4-20
Cisco ONS 15200 Installation, Setup, and Test Manual
78-13765-01
Chapter 4 Turn Up and Test
Record the OSA-measured B-side receive levels and A-side transmit levels in Table B-19 on page B-9
for each remote node in the ring. At the originating hub node, record the incoming signal on the B-side
in
Table B-18 on page B-8 .
Figure 4-8 ONS 15200 system span test connection (hub configuration)
Step 8 At the first node (clockwise) connected to the B-side LM, use an OSA to measure and record the signal
level of each wavelength going into the A-side INPUT port. If necessary, use attenuators to reduce the
level of the dropped wavelength to within receiver specification. As a rough guide, the input power
should be between -19 and -7 dBm for the wavelength (receiver operating range is -30 and -8 dBm).
Record in
Table B-19 on page B-9 .
Step 9 Use an OSA to measure and record the optical power level on the B-side OUTPUT port for each
wavelength. Record the measured OSA outgoing signal levels in
Table B-19 on page B-9 .
Step 10 From the first node, connect a fiber from the B-side OUTPUT port to the A-side INPUT port of the next
node in the ring. Continue until the ring is complete by connecting the fiber from the last node B-side
OUTPUT port to the A-side INPUT port of the originating ONS 15252 MCU (
Figure 4-8 ).
Record the OSA-measured A-side receive levels and B-side transmit levels in Table B-19 on page B-9
for each remote node in the ring. At the hub node, record the incoming signal on the A side in Table B-18
on page B-8 .
Step 11
Log into the MCU and verify that the data rate is set to stm_16 (or another data rate that conforms with
the test set) for each MCU and SCU CLIP in the ring.
Step 12
Type
show power
at the CLI to obtain the signal level at the receivers. Compare the receive power at each
node with the results given by your network planner and complete Table B-20 on page B-10 for the hub
node and Table B-21 on page B-10 for the remote nodes.
Procedure: Test the Bit Error Rate for Unprotected Channels
Continue with the following steps to test the bit error rate for unprotected channels. If you have one or
more protected channels, proceed with
Step 14 .
61155
Test Box
1
A B
2 3
Tx
Rx
B
Client
A
Out
In
B
Client
A
Out
In
B
Client
A
Out
In