Cisco ONS 15200 Series, Installation, Setup & User Manual, Page: 94 / 136

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Cisco ONS 15200 Installation, Setup, and Test Manual
78-13765-01
Chapter 4 Turn Up and Test
Figure 4-2 An OSA-to-LM connection
Procedure: Check DWDM Receivers and Client Transmit Levels
Use the following steps to check DWDM receivers and client transmit levels.
Step 5
Attenuate the DWDM transmit port:
a. Attenuate the output port of the B-side LM of the MCU so that the optical power measured is within
the DWDM receiver specification for each wavelength.
The receiver operating range is -31 and -8 dBm, but the default warning thresholds of -28 and -10
should be used on all CLIP interfaces. As a rough guide, the power level for each channel should be
between -19 and -10 dBm on the LM IN port.
b. Record the attenuated power level for each channel in Table B-8 on page B-5 .
c.
Insert the attenuated fiber-optical cable into the B-side IN port ( Figure 4-3 ).
d. Repeat Steps a – c on the A side.
54911
Line Module
Connect output to OSA and record
data in the appropriate tables.