Product specifications

CRS-170A L-Band 1:1 Redundancy Switch MN/CRS170A.IOM

Cables and Connections Revision 13

5–5

5.3 Cabling to the CDM-625/A

For information on the CDM-625/A’s 1:1 auto-enable functionality, see:

• Chapter 4. MODEM

AND SWITCH CONFIGURATION

• CDM-625A Advanced Satellite Modem Installation and Operation Manual

(CEFD P/N MN-CDM625A)

• CDM-625 Advanced Satellite Modem Installation and Operation Manual

(CEFD P/N MN-CDM625)

2) For information on the cables and cable assemblies specified in this section, see

Appendix A. CABLE DRAWINGS.

5.3.1 CRS-170ACDM-625/A Control and IF Interface Connections Using

Cabling Kit KT-0000160

You must order terrestrial data interface components/kits separately. See Sect. 5.3.2

for CDM-625/A terrestrial data interface configuration and connection examples and

details.

You must use Comtech EF Data’s KT-0000160 1:1 Redundancy Control/IF Interface Cabling Kit

(Sect. 5.2.1) for your control and L-Band Modem-to-Switch cabling connections. Figure 5-1,

Figure 5-2, and Figure 5-3 show how to connect a pair of CDM-625/A modems together with the

CRS-170A L-Band 1:1 Redundancy Switch module. The table included with each figure lists the

items you will need from this kit for your initial setup.

CAUTION – It is ESSENTIAL that you make the control and the IF Rx and Tx

connections correctly. See Sect. 5.3.1.1 for details about the CDM-625/A Modem-to-

Switch Control Interface connection, and Sect. 5.3.1.2 for details about the CDM-

625/A Modem-to-Switch IF Interface connections.