Issue 5 November 2000
363-206-208
Equipment and Rear Access Cabling for the DDM-2000 OC-12 Multiplexer
Lucent Technologies - Proprietary
See Notice on first page
Fan Shelf Alarm Connections - Rear
Access
Description
The DDM-2000 OC-12 fan shelf is optionally provided, as required. An alarm
indication is generated by the fan shelf in the event of a functional failure. This
alarm can be input to the DDM-2000 OC-12 shelf as a miscellaneous discrete
indication miscellaneous discrete #14).
Procedure
The fan shelf alarm output should connect to the DDM-2000 OC-12 shelf located
below the fan shelf. This connection may be made in one of two ways:
a. If no other miscellaneous discrete inputs are being connected to the
DDM-2000 OC-12 shelf, connect a Group 149 cable between the connec-
tor on the fan shelf alarm cable and connector J68 on the rear of the
DDM-2000 OC-12 shelf.
b. If other miscellaneous discrete inputs, in a addition to the fan shelf alarm,
are being connected to the DDM-2000 OC-12 shelf, connect a Group 181
or 147 (D.A.) cable between the connector on the fan shelf alarm cable
and the appropriate wires on the Group 194, 178 or 179 (D.A.) miscella-
neous discrete cable via a miscellaneous terminal strip, in accordance
with information provided in the job specification. Refer to Table 2-4 on
page 2-37, Table 2-12 on page 2-44 and Table 2-13 on page 2-45, and the
procedure in “Miscellaneous Discrete Telemetry Cabling - Rear Access”
on page 2-22.
Final Operations
Procedure
(1) Verify that all the cables are properly dressed.and properly labeled.
(2) Verify that designation where cables were wire-wrapped is properly
labeled.
(3) Attach the backplane cover and verify that it fits properly.
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