Comtech EF Data CRS-311, Installation And Operation Manual

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CRS-311 1:1 Redundancy Switch Revision 7
Cables and Connections MN/CRS311.IOM
3–18
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Make sure there is no system contention from the modem Tx carrier.
3.3.2 System Control Cable Connections – CRS-311 to Modems
The CA/WR12136 ‐ 2 Control Cable provides the serial communication path between the CRS ‐ 311
and the modems and controls the modem’s external Tx IF ‐ mute control line, and is therefore
always required.
In order to provide user access to the AGC and I&Q outputs of the modem, the CA/WR12842 ‐ 4
(4’ length) and CA/WR12842 ‐ 6 (6’ length) Control ‘Y’ Cables, sold separately, are available for
use in place of the CA/WR12136 ‐ 2 Control Cable.
See Appendix A. CABLE DRAWING S for detailed information about these optional
cable assemblies.
Referring to Figure 3 ‐ 9 through Figure 3 ‐ 21:
Connect and secure the CA/WR12136 ‐ 2 Control Cable (or the CA/WR12842 ‐ 4 Control ‘Y’ Cables,
if used) between the CRS ‐ 311 and each SLM ‐ 5650/5650A as follows:
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From the HD ‐ 15F connector labeled “J1” on the RMI or TMI, to
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The HD ‐ 15F connector labeled “J9 Auxiliary” on the SLM ‐ 5650/5650A.
3.3.3 Serial Data Traffic Cable Connections – CRS-311 to Modems
3.3.3.1 EIA-530 Data Traffic Connections
Referring to Figure 3 ‐ 9:
Connect and secure the CA/WR0066 ‐ 4 Data Cable between the CRS ‐ 311 and each
SLM ‐ 5650/5650A as follows:
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From the DB ‐ 25M connector labeled “P2” on the RMI or “P1” on the TMI, to
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The DB ‐ 25F connector labeled “J6 EIA530” on the SLM ‐ 5650/5650A.
3.3.3.2 Balanced G.703 Data Traffic Connections
Referring to Figure 3 ‐ 10
Connect and secure the CA/WR9038 ‐ 4 Balanced G.703 Data Cable between the CRS ‐ 311 and
each SLM ‐ 5650/5650A (via the optional G.703 Interface Module) as follows: