Extron electronic ISM 824 manual RS-232/RS-422 Link, Front Panel Configuration Port, Pin

SIS™ Programming and Control

RS-232/RS-422 Link

The switcher’s rear panel Remote 9-pin D female connector (figure 4-1) can be connected to the RS-232/RS-422 serial port output of a host device such as a computer running the HyperTerminal utility or a control system. This connection

Pin

1

2

3

4

5

6

7

8

9

makes software control of the switcher possible.

RS-232	Function	RS-422	Function
—	Not used	—	Not used
TX	Transmit data	TX	Transmit data (-)
RX	Receive data	RX	Receive data (-)
—	Not used	—	Not used
Gnd	Signal ground	Gnd	Signal ground
—	Not used	—	Not used
—	Not used	RX+	Receive data (+)
—	Not used	TX+	Transmit data (+)
—	Not used	—	Not used

5 1

96 Female

15

69 Male

Figure 4-1 — Remote connector pin arrangement

The protocol is 9600 baud, 8-bit, 1 stop bit, no parity, and no flow control.

Front Panel Configuration Port

NThis port is hardwired for RS-232 only.

NThis port is independent of the rear panel RS-232/RS-422 port. A front panel Configuration port connection and a rear panel RS-232/RS-422 port connection can both be active at the same time.

The optional 9-pin D to 2.5 mm mini jack TRS RS‑232 cable, part #70-335-01(figure 4-2) can be used for connection to the Configuration port.

1 6

6 feet

(1.8 m)

Part #70-335-01

5

9

Tip

Ring

Sleeve (Gnd)

9-pin D	Connection	TRS Plug
Pin 2	Computer's RX line	Tip
Pin 3	Computer's TX line	Ring
Pin 5	Computer's signal ground	Sleeve

Figure 4-2 — Optional 9-pin TRS RS-232 cable

4-2 ISM 824 Integration Scaling Multiswitcher • SIS™ Programming and Control