363-206-285 Detailed Level Procedure: DLP-547
Issue 2, February 2000 Page 2 of 2
DDM-2000 OC-3 MULTIPLEXER
2. Set variable optical attenuator to obtain power level reading on optical power
meter as required from Table A.
3. Monitor the DS1/DS3 received signal with the DS1/DS3 Error Rate Test Set
(ERTS) for 30 minutes and insure a bit error rate (BER) result of 10
–10
or
better.
4. Did OLIU pass BER test?
If YES, then STOP. YOU HAVE COMPLETED THIS PROCEDURE.
If NO, then continue with Step 5.
5. Clean optical attenuators and connectors and repeat test. If test fails again,
replace OLIU.
Table A – OC-3/OC-12 OLIU Optical Power Levels
OC-3 OLIU Power Level (dBm)
22G-U, 22G2-U, 22G3-U, 22G3-U –34.0
22F, 22F-U, 22F2-U –34.0
22D-U –33.8(Cont. Env.) –31.8(Uncont. Env.)
26G2-U, 27G-U, 27G2-U –30.8
24G-U, 29G-U –30.5
OC-12 OLIU Power Level (dBm)
24H-U, 29H-U –31.0
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