Kramer Electronics VP-721DS user manual 10 RS-232 CONTROL OF THE VP-722DS VIDEO SCALER

10RS-232 CONTROL OF THE VP-722DS VIDEO SCALER

The Video Input selection and signal parameter settings for the VP-722DS can also be made via an external control system by using the RS-232 port on the unit. If information for this control method is required, beyond the scope of the instructions provided in this section, please contact Kramer Technical Support at: www.kramerelectronics.com/searchdx.html. A disk is provided with the VP-722DS containing a sample Windows Control Panel that permits remote control of the unit from a PC via RS-232.

* The connection between VP-722SC and RS-232 remote controller with modem cable.

Pins definition of modem cable

Video Scaler		Remote Controller
PIN	Definition	PIN	Definition
1	NC	1	NC
2	TxD	2	RxD
3	RxD	3	TxD
4	NC	4	DTR
5	GND	5	GND
6	NC	6	DSR
7	NC	7	RTS
8	NC	8	CTS
9	NC	9	NC

* RS-232 transmission format:

Baud Rate: 9600bps	Data Bit: 8 bits		Parity: None			Stop Bit: 1 bit
* Command/Response codes of RS-232 transmission:
(The command/response code is the combination of 3 characters.)
Remote Controller		→		Video Scaler
Command Code	Comment	←	Response Code		Comment
none			OK1		video scaler power on ready
AU!	AUTO		AU0		AUTO OFF
			AU1		AUTO ON
			IN0		S-video
			IN1		Composite Video
			IN2		PC1
IN!	INPUT		IN3		PC2
			IN4		PC3
			IN5		PC4
			OU0		VGA
OU!	OUTPUT		OU1		SVGA
			OU2		XGA
			SE0		Horizon
			SE1		Vertical
			SE2		Hue
SE!	SELECT		SE3		Color
			SE4		Bright
			SE5		Contrast

Kramer Electronics Ltd.

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