User`s manual

INSTALLATION

Control Port 1 (by default the Terminal Port)

This port can be either RS-232 or RS-422 using a 9 pin D connection. RS-232 operation requires

the router to be configured as a DCE (Pin 2 TX, Pin 3 Rx, Pin 1, 9 GND) device with a PC being a

DTE device.

Control Port 2 (by default the Host Port)

This ports can be either RS-232 or RS-422 using a 9 pin D connection. RS-232 operation

requires the router to be configured as a DCE (Pin 2 TX, Pin 3 Rx, Pin 1, 9 GND) device with a

PC being a DTE device.

Control Port 3

This port can be either RS-422 or RS-485 using a 9 pin D connection.

Connections to the 9-pin are shown in the table below. “Transmit” and “Receive” are names used

by the Sierra Video Systems router. For connection to an external PC or other controlling device

use the opposite names.

PC RTR

2 RX 2 TX

3 TX 3 RX

5 GND 1 , 9 GND

NOTE:

To convert the 9-pin connector to an RS422 serial port, move the jumpers on JP-3 (for port 1) or JP-4 (for

port 2) as indicated by the silk screen on the control processor board.

Host & Terminal Port

Installation

Pin RS-232 RS-422

1 Ground Ground

2 Transmit Transmit (-)

3 Receive Receive (+)

4 Not used Not used

5 Not used Not used

6 Not used Not used

7 Not used Transmit (+)

8 Not Used Receive (-)

9 Ground Ground