Extron electronics Matrix 12800 Wideband video User Manual page 67

Programming Guide
RS-232/RS-422 Ports
The rear panel RS-232/RS-422 connectors (figure 4-1) of the matrix switcher BME 0
can be connected to the serial port output of a host device such as a computer
running the HyperTerminal utility or a control system. This connection makes
Simple Instruction Set (SIS) control of the switcher possible from the computer or
host via the RS-232/RS-422 link.
Figure 4-1 — RS-232/RS-422 connector pin arrangement
N The Matrix 12800 Switchers are factory configured for RS-232 control. To
The default communications rate is 9600 baud. Baud rates of 19200, 38400, and
115200 are also available, see
"Upgrades and Maintenance". The protocol is 8-bit, 1 stop bit, no parity, and no
flow control.
4-2 Matrix 12800 Switchers • Programming Guide
Pin RS-232 Function
1 — Not used
2 TX Transmit data
5 1
3 RX Receive data
4 — Not used
5 Gnd Signal ground
6 — Not used
9 6
Female 7 — Not used
8 — Not used
9 — Not used
use the switcher under RS-422 control, you must change an internal DIP
switch. See "Swapping the serial port protocol
"Upgrades and Maintenance", for details.
"Changing the serial port baud
RS-422 Function
TX+ Transmit data (+)
TX- Transmit data (-)
RX+ Receive data (+)
RX- Receive data (-)
Gnd Signal ground
— Not used
— Not used
— Not used
— Not used
(RS-232/RS-422)" in chapter 6,
rate", in chapter 6,