Product specifications

CRS-300 1:10 Redundancy Switch Revision 16
Cables and Connections MN/CRS300.IOM
4–4
4.2 Switch-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.
4.2.1 CRS-300 to CRS-280/280L Connection
Refer to Figure 4-1 and Figure 4-2 to 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.
4.2.2 CRS-300 to CRS-350 Connection
Refer to Figure 4-3 to 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.
4.2.3 CRS-300 to CRS-350 and CRS-280/280L Connection
Refer to Figure 4-4 or Figure 4-5 to 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.