Chapter 9. Cdi-60 Hssi Interface Module; Introduction; Figure 9-1. Cdi-60 Hssi Interface Module - Comtech EF Data CDM-710 Installation And Operation Manual

Chapter 9. CDI-60 HSSI
INTERFACE MODULE
9.1

Introduction

The CDI-60 HSSI Interface (Figure 9-1) is a plug-in module that is installed into the rear of the
CDM-710 Broadcast Satellite Modem chassis. It provides physical and electrical connection
between the external terrestrial device and the internal circuitry of the modulator or demodulator.

Figure 9-1. CDI-60 HSSI Interface Module

By convention, a modem is Data Communications Equipment (DCE) where Tx data enters the
data interface and Rx data exits. The plug-in interface has full duplex capability. In addition, the
module is automatically configured for simplex-transmit or simplex-receive operation when the
module is plugged into a simplex chassis configured for 'modulator only' or 'demodulator only'
operation.
Slot 1 of the CDM-710 – located at the center right of the chassis rear panel – is intended for the
dedicated placement of a CDI-40 ASI or CDI-60 HSSI Interface module. Slot 2 – located at the
right side end of the chassis rear panel – is assigned a blank panel or is restricted to the dedicated
placement of a CDI-70 10/100/1000 Base-T Gigabit Ethernet (GigE) Interface module, depending
upon configurations allowed at time of order.
For a table of the applicable interfaces and installable combinations, refer to Sect. 1.3.5 Allowable
Data Interface Combinations.
9–1