Extron electronic FOX 500 DA6 user manual Remote Control, Front Panel Configuration Port

Remote Control

The DA has two serial ports that can be connected to a host device such as a computer running the HyperTerminal utility, an RS-232 capable PDA, or a control system. These ports make serial control of the DA and the connected receivers possible. The serial ports are:

•The rear panel Remote RS-232 port on 3-pin captive screw connectors

•The front panel Configuration (RS-232) port, a 2.5 mm mini stereo jack

The protocol for all ports is as follows:

•	9600 baud	•	no parity	• 8 data bits
•	1 stop bit	•	no flow control

Front Panel Configuration Port

NThe front panel configuration ports parallel the rear panel Remote RS-232 ports. If a front panel configuration connection is made, the rear panel Remote RS-232 port becomes inactive and the front panel Configuration port is active.

The optional 9-pin D to 2.5 mm mini jack TRS RS‑232 cable, part #70-335-01(figure 3-2) can be used for connection to the Configuration port.

6 feet

(1.8 m)

N The rear panel Remote RS-232 port is active only if the

front panel Configuration port is not in use. If a front

panel configuration connection is made, the rear panel

1 6

Part #70-335-01

Remote RS-232 port becomes inactive and the front panel

5

9

Configuration port is active.

NOnly one fiber optic cable, Optical 1, is required for video, audio, and serial command transmission. But, if you connect only one fiber optic cable, you do not receive RS-232 communications from the controlled device connected to the master receiver, and there is reduced RS-232 command and Windows control program functionality on the receiver. To receive responses

from the master receiver and for full functionality, you must install both fiber optic cables between the DA and the master receiver.

Rear Panel Remote RS-232 Ports

REMOTE	ALARM	Pin Function
RS-232

			TX Transmit data
Tx Rx	1	2	RX Receive data
			Gnd Signal ground

Do not tin the wires!	Controlling
	Device

Bidirectional

Ground ( ) Ground ( )

Receive (Rx)	Receive (Rx)
Transmit (Tx)	Transmit (Tx)

Figure 3-1 — Remote connector pin assignments

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 3-2 — Optional 9-pin TRS RS-232 cable

Simple Instruction Set Control

Host-to-interface communications

SIS commands consist of one or more characters per field. No special characters are required to begin or end a command character sequence. When a command is valid, the unit executes the command and sends a response to the host device. All responses from the unit to the host end with a carriage return and a line feed (CR/LF = ]), which signals the end of the response character string. A string is one or more characters.

Symbol definitions

Symbols (variables), defined on the next page, are used throughout the "Unit-initiated messages" section and the command/response table beginning on page 3-8. The symbols represent variables in the unit-initiated messages and the command/response table fields.

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