Mocomtech operation manual Switch-to-Switch Connections, CRS-300 to CRS-280/280L Connection

CRS-300 1:10 Redundancy Switch	Revision 16
Cables and Connections	MN/CRS300.IOM

4.2Switch-to-Switch Connections

If the User’s redundancy system requires the Comtech EF Data CRS-280 (70/140 MHz) IF, CRS- 280L (L-Band) IF, and/or CRS-350 Engineering Service Channel (ESC) Switch (used only with the CDM-600/600L, CDM-625, or SLM-5650/5650A), Control/Data Cable CA/WR0066 is needed to connect the Switches. Each CRS-280/280L and CRS-350 is supplied with this cable for connection to the associated Switch control unit.

The following sections outline the switch-to-switch cable connections between the CRS-300, CRS-350, and the CRS-280/280L.

4.2.1CRS-300 to CRS-280/280L Connection

Refer to Figure 4-1and Figure 4-2to connect and secure the CA/WR0066 cable between the CRS-300 and the CRS-280/280L as follows:

•DB-25M connector labeled “IF Switch Control” on the CRS-300’s CRS-230 System Controller, to

•DB-25F connector on the rear panel of the CRS-280/280L.

4.2.2CRS-300 to CRS-350 Connection

Refer to Figure 4-3to connect and secure the CA/WR0066 cable between the CRS-300 and the CRS-350 as follows:

•DB-25M connector labeled “IF Switch Control” on the CRS-300’s CRS-230 System Controller, to

•DB-25F connector on the rear panel of the CRS-350.

4.2.3CRS-300 to CRS-350 and CRS-280/280L Connection

Refer to Figure 4-4or Figure 4-5to first connect and secure the CA/WR0066 cable between the CRS-300 and CRS-350 as follows:

•DB-25M connector labeled “IF Switch Control” on the CRS-300’s CRS-230 System Controller, to

•DB-25F connector on the rear panel of the CRS-350.

Next, connect and secure the second 25-pin CA/WR0066 cable between the CRS-350 and CRS-280/280L as follows:

•DB-25M connector on the CRS-350, to

•DB-25F connector on the rear panel of the CRS-280/280L.

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