beautypg.com

2 switch-to-modem if interface connection – Comtech EF Data CRS-180 User Manual

Page 65

background image

CRS-180 70/140 MHz IF 1:1 Redundancy Switch

MN/CRS180.IOM

Cables and Connections

Revision 11

5–5

5.2.1.2 Switch-to-Modem IF Interface Connection

Excluding modems, the KT-0000159 1:1 Redundancy Kit (see Sect. 5.2.1) provides all

components shown in Figure 5-2.

EXAMPLE: The Tx IF from ‘MODEM A’ connects to the Tx IF port ‘J5 | Tx A’ on the

CRS-180; similarly, the Tx IF from ‘MODEM B’ connects to the Tx IF port ‘J6 | Tx B’

on the CRS-180.

The same logic applies for the Rx IF connections. It is important to note that failure

to observe this requirement will result in system malfunction.

Item

CEFD P/N

Qty

Description

1

PL/0946-1

4

IF Coax Cable, 50Ω

2

XF/BNC-MF-50-75

2

Transformer, 50-75Ω, 2-200 MHz, BNC, M/F

Figure 5-2. CDM-625/A Switch-to-Modem 70/140 MHz IF Connections (CEFD Kit

KT-0000159)