Comtech EF Data CDM-710L Dokumentacja Pobierz pdf (Strona 21)

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Chapter 1. INTRODUCTION

1.1 Overview

Figure 1-1. CRS-170A L-Band 1:1 Redundancy Switch Module

The CRS-170A L-Band 1:1 Redundancy Switch Module (Figure 1-1) is an L-Band Tx-Rx IF signal

switch. It is designed for use with Comtech EF Data L-Band satellite modems in a 1:1 redundant

(Online ‘A’ and Backup ‘B’) configuration.

The CRS-170A is compatible for use with the Comtech EF Data modem listed in Table 1-1. This

table also summarizes the CRS-170A 1:1 IF Switch applications, including requirements for

supporting data switching hardware and software.

The CRS-170A monitors the faults of the ‘A’ and ‘B’ modems and determines which modem

should be online. The data switch is built into each terrestrial data interface inside both modems

(excluding the CDM-600L [CLM-9600L] and SDM-300L3 modems, which require ancillary

switching devices).

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Comtech EF Data CDM-710L Dokumentacja Strona 21