Vidikron 90 manual 6Serial Communications, Serial Command Syntax, Serial Commands

6Serial Communications

To interface the Vision 90 with a home theater automation/control system or a PC running terminal emulation software, connect it to your control system or PC as shown in Figure 3-11.

Configure the RS-232 controller or PC serial port as follows: no parity, 8 data bits, 1 stop bit and no flow control. Set the baud rate to 19200, to match that of the Vision 90 RS-232 port.

Serial commands to the Vision 90 take the following form:

•Commands are not case-sensitive.

•For a single command that takes no parameters, type the command followed by a carriage return; for example, to set the aspect ratio to Letterbox, type

LETTERBOX <Return>.

•For a single command that takes a parameter, type the command, a space or a comma and the desired value followed by a carriage return; for example, to set the brightness to

-10, type BRIGHTNESS -10 <Return> or BRIGHTNESS,-10 <Return>.

•You can also send a string of multiple commands on a single line, separated by commas. For example, COMPOSITE,BRIGHTNESS 100,ANAMORPHIC <Return> switches to the Composite video input, sets the brightness to 100 and sets the aspect ratio to Anamorphic. Command strings can be up to 255 characters long.

Table 6-1lists the RS-232 command set. The “Parameter (min/max)” column shows the valid parameter ranges, or “NA” for commands that take no parameters.

When you enter a valid command, the Vision 90 executes it and acknowledges it with a plus sign on the command line (+ >). When you enter an invalid command -- one that is misspelled or followed by values outside the valid range for that command -- the Vision 90 ignores it and returns a minus sign (- >).

Table 6-1. Serial Commands

Command	Parameter	Value	Description
	(min/max)	Stored?
POWER	0/1	NA	Turns projector on and off
ON	NA	NA	Turns projector on
OFF	NA	NA	Turns projector off
COMPOSITE	NA	YES	Selects the Composite video input
SVIDEO1	NA	YES	Selects the S-Video 1 input
SVIDEO2	NA	YES	Selects the S-Video 2 input
COMPONENT	NA	YES	Selects the Component input
HD1	NA	YES	Selects the RGB HD 1 input
HD2	NA	YES	Selects the RGB HD 2 input
DVI1	NA	YES	Selects the DVI 1 input

6.1

RS-232 Connection and Port Configuration

6.2

Serial Command Syntax

Vidikron Vision Model 90 Owner’s Operating Manual 6-1