User`s manual

Sierra Video

Serial Port Assignments

There is a single serial data port that can be configured for either RS232 or RS422

operation. The mode of operation is set by means of jumpers (J13 and J14) on the CPU

board.

The pin assignment of the connector is shown on page 57.

Jumpers J1, J13 and J14 are located on the Controller (CPU) card. Access requires the

removal of the CPU card from the front of the unit with the power removed.

Jumper Position 1/2 Position 2/3

J1 used for debugging normal

J13 RS422 RS232 (set in conjunction with J14

J14 RS422 RS232 (set in conjunction with J13)

Note: Pin 1 is indicated on the PCB. Other CPU card settings and controls are for

factory use only.