Comtech EF Data CRS-170A - Manual (Page 97)

CRS-170A L-Band 1:1 Redundancy Switch MN/CRS170A.IOM
Cables and Connections Revision 13
5–27
5.5 Cabling to the CDM-840
1) For information on the CDM-840’s 1:1 auto-enable functionality, see:
• Chapter 3. MODEM AND SWITCH CONFIGURATION
• CDM-840 Remote Router Installation and Operation Manual
(CEFD P/N MN-CDM840)
2) For information on the cables and cable assemblies specified in this section, see
Appendix A. CABLE DRAWINGS.
5.5.1 CRS-170A  CDM-840 Control and IF Interface Connections Using
Cabling Kit KT-0000160
You must order terrestrial data interface components/kits separately. See Sect.
5.5.2 for CDM-840 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 5-23 and
Figure 5-24 show how to connect a pair of CDM-840s 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. 5.5.1.1 for details about the CDM-840 Unit-to-Switch
Control Interface connection, and Sect. 5.5.1.2 for details about the CDM-840 Unit-
to-Switch IF Interface connections.