Lucent DDM-2000 OC-3 User And Service Manual page 785

363-206-285
Issue 2, February 2000
Install DS3/TMUX Circuit Packs
!
1.
CAUTION:
Take care to avoid damaging the LEDs that protrude through the opening
in the faceplate of the DS3/TMUX .
NOTE:
DS3/TMUX circuit packs may be installed in FUNCTION UNITS group
slots A, B, or C. BBG4/BBG4B DS3 and BBG20 TMUX service circuit
packs are installed in slots labeled FUNCTION UNITS ( ) 1.
BBG4/BBG4B DS3 and BBG20 TMUX protection circuit packs are
installed in slots labeled FUNCTION UNITS ( ) 2(P). BBG19 DS3 data
interface circuit packs are installed in both FUNCTION UNITS ( ) 1 & 2(P)
slots and are independent. There is no protection between the BBG19
DS3 circuit packs.
Determine which FUNCTION UNITS group slot(s) (A ( ), B ( ) or C ( )) is being
equipped with DS3/TMUX circuit packs.
2. Determine from office records the length of the DS3 cabling between the
DDM-2000 and the DSX-3 cross-connect point.
3. NOTE:
The only hardware option settings on DS3 circuit packs are the LBO
settings shown in Figures 1 and 2. If there are other jumpers on the
circuit pack similar to the LBO jumpers, they are factory test points and
should be ignored.
Refer to Table A and Figures 1 and 2. Install the DS3 option jumpers per
Table A.
Table A – DS3 LBO Settings
Cable Length (Ft)
734A
0 to 225
>225 to 450
735A
1735006A LBO Setting
0 to 125 LBO IN
>125 to 250 LBO OUT
DDM-2000 OC-3 M
Detailed Level Procedure:
ULTIPLEXER
DLP-507
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