Comtech EF Data CRS-170A - Manual (Page 91)

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
1) 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.