Chapter 6. Connector Pinouts; Controller Connectors; Crs-230 Controller Connectors; If Switch Control - Db-25M Connector - Comtech EF Data CRS-300 Installation And Operation Manual

Chapter 6. CONNECTOR PINOUTS

6.1

CRS-230 Controller Connectors

6.1.2: 485 Pass-Through Connector
6.1.3: Remote Control Connector
6.1.1 IF Switch Control – DB-25M Connector
whether the system is in bridged or backup mode. The CRS-280/350 performs the same bridging
and backing up functions of the Tx and Rx IF signals to match what the CRS-300 does to the
terrestrial data signals.
The DB-25M IF Switch Control connector is cabled directly to the
corresponding connector on the CRS-280 or CRS-350, if used. This
supplies power to the CRS-280/350, along with the logic interface
to drive the currently selected terrestrial modem, and to decide
6–1
6.1.1: IF Switch Control Connector
6.1.4: System Alarms Connector