Product specifications

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

Cables and Connections Revision 13

5–21

5.4 Cabling to the CDM-850

For information on the CDM-850’s 1:1 auto-enable functionality, see:

• Chapter 4. MODEM AND SWITCH CONFIGURATION

• CDM-850 Remote Router Installation and Operation Manual (CEFD Part No.

MN-CDM850)

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

Appendix A. CABLE DRAWINGS.

5.4.1 CRS-170A  CDM-850 Control and IF Interface Connections Using

Cabling Kit KT-0000160

The CDM-850 employs 10/100/1000 Ethernet (Gigabit Ethernet, also referred to

throughout this chapter as GigE or GbE) as its sole terrestrial data interface. All

cables and switches must be user-supplied. See Sect. 5.4.2

for the CDM-850 Gigabit

Ethernet 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 Unit-to-Switch cabling connections. Figure 5-18 and

Figure 5-19 show how to connect a pair of CDM-850s 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. 5.4.1.1 for details about the CDM-850 Unit-to-Switch

Control Interface connection, and Sect. 5.4.1.2 for details about the CDM-850 Unit-

to-Switch IF Interface connections.