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

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4-19
Cisco ONS 15200 Installation, Setup, and Test Manual
78-13765-01
Chapter 4 Turn Up and Test
c.
Clear all errors on the test set and run the BER test error-free for 15 minutes. Complete Step 21 in
Table B-11 on page B-7 .
Step 22 Test B-side protected channels and all unprotected channels:
a. Disconnect the jumper cable on the A-side INPUT port of the top SCU in loopback mode.
b. Reconnect the A-side jumper cable and verify that all protected ONS 15201 SCUs identify the B
side as Active and the A side as Standby.
c.
Clear all errors on the test set and run the BER test error-free for 15 minutes. Complete Step 22 in
Table B-11 on page B-7 .
Step 23 Reset the original switchmode settings ( Table B-16 on page B-8 ).
4.5 Perform System Span Testing for a Hub Configuration
Use the following procedures to perform ONS 15200 system span testing for a hub configuration.
Note First complete the individual turn up and test procedures for each ONS 15252 MCU and ONS 15201
SCU in the network.
Procedure: Connect a Path
Step 1
Configure the MCU so that the signal generator transmit is connected to the Client INPUT port on the
first CLIP module.
Step 2 Daisy chain the remaining CLIP modules together by using fiber-optic jumper cables to connect the
OUTPUT port of the previous CLIP module to the INPUT port of the next CLIP module on the client
side. The last CLIP module OUTPUT port is connected to the receive on the signal generator.
Step 3
Beginning at the MCU hub node, use an OSA to measure and record the power level of each wavelength
on the LM A-side OUTPUT port and the LM B-side OUTPUT port. Record the measured values in
Table B-18 on page B-8 .
Step 4 Run a fiber from the OUTPUT port on the A-side LM of the MCU counterclockwise to the B-side INPUT
port of the first node in the ring (per customer design).
Step 5
At the first node (counterclockwise) connected to the A-side LM, use an OSA to measure and record the
signal level of each wavelength going into the B-side INPUT port.
If necessary, use attenuators to reduce the level of the dropped wavelength to within receiver
specification range. As a rough guide, the input power should be between -25 and -7 dBm for the
wavelength (receiver operating range is -30 and -8 dBm). Record the (unattenuated) measured OSA
incoming signal levels in
Table B-19 on page B-9 .
Step 6
Use an OSA to measure and record the optical power level on the A-side OUTPUT port for each
wavelength. Record the measured OSA outgoing signal levels in
Table B-19 on page B-9 .
Step 7 Connect a fiber from the A-side OUTPUT port of the first node to the B-side INPUT port of the next
node in the ring. Continue until the ring is completed by connecting the fiber from the last node A-side
OUTPUT port to the INPUT port of the originating MCU B-side INPUT port (
Figure 4-8 ).