363-206-305 Detailed Level Procedures:
Issue 3, June 2000 Page 1 of 2
DDM-2000 F
IBER
R
EACH
N
ARROWBAND
S
HELF
DLP-504
Install Channel Units (CU)
Summary:
This procedure tells how to install CUs in the NBS (Figure 1).
1.
NOTE:
Before performing this procedure, verify that the the following common
units (DSXBIU, PCU, RGU, and CDTU [optional]) are installed in NBS
and NBS shelf has no alarms.
Open the electronics compartment door using the 216-type tool or screwdriver.
2. Connect your ESD wrist strap to the ESD GRD ground jack located at the
lower right front of the NBS enclosure.
Figure 1 – Front View of Narrowband Shelf
Shelf 1
(Slots 1 to 6)
Shelf 2
(Slots 7 to 12)
Narrowband Shelf (NBS)
CDTUPCU
RGU
DSXBIU
tpa853937-01
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