Vidikron 85 User Manual

Page of 100
Vidikron Vision 85 Owner’s Operating Manual
77 
PRE
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IMINAR
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6.1 
RS-232 Connection and 
Port Configuration
To interface the VHD Controller 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 3-15. 
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 VHD Controller RS-232 
port. 
6.2 
Serial Command Syntax
Serial commands to the VHD Controller 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 <Enter>
• 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 <Enter> or BRIGHTNESS,-10 <Enter>
• You can also send a string of multiple commands on a single line, separated by commas. 
For example, COMPOSITE,BRIGHTNESS 100,ANAMORPHIC <Enter> 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 6-1 lists 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 VHD Controller 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 VHD 
Controller ignores it and returns a minus sign (- >).  
6
Serial Communications
Avoid combining the ON or POWER 1 commands with other commands on a 
single line. After sending 
ON or POWER 1, allow at least 15 seconds for the 
VHD Controller to power up. Once it does, it will accept and properly execute 
multiple serial commands. 
Table 6-1. Serial Commands 
Command
Parameter 
(min/max)
Value 
Stored?
Description
Power On/Off Commands
OFF
NA
NA
Turns projector off
ON
NA
NA
Turns projector on
POWER
0/1
NA
Turns projector on and off
POWER?
NA
NA
Returns power status
Note