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1.1.2 BCS 4R DSX-3 Module (Models 010-8301-0401 & 010-8302-0401)
Telect’s BCS 4R DSX-3 Module is a 4-port passive card module for populating the BCS 4R
Chassis.
Model 010-8301-0401 fits every odd-numbered shelf position (Positions 1 through 31) and Model
010-8302-0401 fits every even position (Positions 2 through 32). (BCS 4R DSX-3 Module kit
[Model 999-8300-0401] contains one odd and one even module.) The BNC connections on the
rear of the even versus the odd modules are slightly offset to accommodate 32, side-by-side
modules in each chassis.
BNC circuit assignments are as follows:
•
Input (
I
) to and Output (
O
) from the network element, and
•
Cross-connect input (
XI
) and output (
XO
) — from/to another DSX-3 module. Cross-connec-
tions between DSX-3 Modules should be 27 ft. or less.
Figure 4 - Cross-connect Inputs
The four ports on the front of the module are Mini-WECO connectors for temporary Input (
I
) and
Output (
O
) patch cords (734A or 735A cables) from/to a standby DSX-3 circuit, and for temporary
Monitor (
M
) patch cords:
•
The I and O patch connections are intrusive, highly reliable, make-and-break connections that
break (disconnect) the cross-connect circuits at the same time making (connecting) the
standby circuit. Patch cord connections between DSX-3 modules should be 20 ft. or less.
•
The
M
connections are non-intrusive connections that allow for testing, diagnosis, and trouble-
shooting without disconnecting either normal or standby service.
The front of the module contains a red tracer LED fed by power supplied from a GMT power shelf.
A tracer wire is inserted through the rear of the BCS 4R Chassis; the tracer lamp is lit by
grounding the tracer wire at the trace controller. Tracer lamps aid in diagnosing problems by
visually mapping out assigned network element cross connections.
