Lucent DDM-2000 OC-3 User And Service Manual page 759

DLP-502
: Detailed Level Procedure
Page 1 of 2
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1.
CAUTION:
Take care to avoid damaging the LEDs that protrude through the opening
in the faceplate of the BBG6 STS1E .
NOTE:
BBG6 STS1E circuit packs may be installed in FUNCTION UNITS group
slots A, B, or C. Service BBG6 STS1E circuit packs are installed in slots
labeled FUNCTION UNITS ( ) 1. Protection BBG6 STS1E circuit packs
are installed in slots labeled FUNCTION UNITS ( ) 2(P).
Determine which FUNCTION UNITS group slots (A, B, or C) are to be
equipped with BBG6 STS1E circuit packs.
2. Determine from office records the length of the STS1E cabling between the
DDM-2000 and the STSX cross-connect point.
3. Refer to Table A and Figure 1. Install the STS1E option jumpers per Table A.
4. NOTE:
The BBG6 STS1E circuit pack provides bidirectional transport of one
EC-1 signal through the DDM-2000 Multiplexer. STS1E high speed
mode interfaces with the DS1 circuit packs in a FUNCTION UNITS group
at the VT-G rate. STS1E low speed mode interfaces with the OLIU circuit
packs at the STS-1 rate.
Set switch S1 to mode of operation required (HIGH-SPEED MODE or
LOW-SPEED MODE).
Table A – STS1E LBO Settings
Cable Length (Ft)
734A Cable
0 to 225
>225 to 450
Install STS1E Circuit Packs
735A Cable LBO Setting
0 to 125 LBO IN
>125 to 250 LBO OUT
DDM-2000 OC-3 M
Issue 2, February 2000
ULTIPLEXER
363-206-285