Appendix E. External Amplifier Communication; Overview; External Amplifier Communication; E.1 Overview - Comtech EF Data CSAT-5060 Installation And Operation Manual

Appendix E. External Amplifier
This appendix describes items particular to the +10 dBm unit.

E.1 Overview

The +10 dBm CSAT Transceiver provides an additional connector (J8) to ease
communications with an external amplifier. This connector passes the RS-485 serial
communication signals to the external amplifier. It also connects the fault relay of the
external HPA to the CSAT redundant controller system. This allows the system to
recognize a fault of the external HPA and drive the redundant switching appropriately.
The downconversion side of the transceiver operates the same as the standard CSAT.
E.2 External Amplifier Communication
The J8 connector allows a single cable interface between the CSAT and the external
HPA.
Refer to the following table for connector pinouts. The RS-485 connections are
parallelled with the RS-485 connections on the CSAT's standard M and C connection.
This allows the customers M&C to transmit and receive commands from the external
HPA.
If the CSAT detects an open between pin F and pin G, it will generate a fault and the data
will be acted upon by the redundant controller.
(+10 dBm Transceiver Only)
Communication
E.1 Overview
E.2 External Amplifier Communication
E–1
E–1
E–1