Sierra Video View Multi-Viewer MV-XX - Manual (Page 29)

SIERRA VIEW
23
Serial port assignments
Each multi-viewer is equipped with a 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. Note that only the upper port is active on the single type frame.
The lower port is only used for the dual type frame, where it serves the system on the left
side of the frame when viewed from the front.
Female 9 way ‘D’ connector RS422 assignments
Female 9 way ‘D’ connector RS232 assignments
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.
J1 – Position 1/2 used for debugging. Position 2/3 normal.
J13 – Position 1/2 RS422. Position 2/3 RS232 (set in conjunction with J14).
J14 – Position 1/2 RS422. Position 2/3 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.
Pin No Function
1 GND
2 RX -
3 TX -
7 RX+
8 TX+
Pin No Function
2 TX
3 RX (inactive in half duplex mode)
4 DTR
5 GND
7 RTS