Mocomtech CRS-300 CRS-230 Controller Connectors, If Switch Control DB-25M Connector

Chapter 6. CONNECTOR PINOUTS

6.1CRS-230 Controller Connectors

6.1.2: 485 Pass-Through Connector

6.1.3: Remote Control Connector

6.1.1: IF Switch Control Connector

6.1.4: System Alarms Connector

6.1.1IF Switch Control – DB-25M Connector

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

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.

6–1