363-206-305 Circuit Order:
Issue 3, June 2000 Page 1 of 4
DDM-2000 F
IBER
R
EACH
W
IDEBAND
S
HELF
NTP-011
Install DS1 Protection Bus Module
(1X1 or 1X7) System
Out-of-Service
DO ITEMS BELOW IN ORDER LISTED . . . . FOR DETAILS, GO TO
1.
NOTE:
This procedure is used to verify/install the proper DS1
protection bus module (Release 2.0 or later) prior to
mounting the FiberReach shelf. If the system is already in
service and the protection mode is being changed, use the
procedures of NTP-012 instead of this procedure. A 1X1 or
1X7 protection bus module must be installed for proper shelf
operation and to provide the kind of low-speed protection
desired.
Determine which protection bus module [847578390 (1X1) or
847578416 (1X7)] is required.
2.
!
CAUTION:
Use caution when removing the small screws used to mount
the protection assembly cover. A magnetic screwdriver will
speed the removal and installation of the screws.
See Figure 1. At right rear of shelf, remove the metal protection
assembly cover by removing the four mounting screws.
3. If a protection bus module is already installed, verify it is the
proper module. If a protection bus module is not installed, insert
the proper module into connector P2. (The connector is keyed to
ensure proper insertion.)
4. Reinstall the metal protection assembly cover.
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