Elan s86a Installation Manual page 102

S86A
INSTALLATION MANUAL
VSD (Video Signal Detect)
Description:
• Queries Unit u Video Inputs to determine if a video signal is present.
• The S86 can detect the video instantaneously and detect the absence of video instantaneously.
• Works if System is off or on.
Command:
N/A
Query:
&S86,VSD,u?<cr>
Reply:
&S86,VSD,u,aaaaaaaa<cr>
Parameters:
<cr>:
carriage return: Hexadecimal 0x0D or Decimal 13
u:
Unit 1-4
a:
0 = Not Detected
1 = Detected
Examples:
• &S86,VSD,1?<cr> Queries Unit 1.
• &S86,VSD,2?<cr> Queries Unit 2.
• &S86,VSD,1,11111100<cr> S86A Unit 1 reply.
Video Signals 1 thru 6 are ON and Video Signals 7-8 are OFF.
• &S86,VSD,2,00001000<cr> S86A Unit 2 reply.
Video Signal 5 is ON, Video Signals 1, 2, 3, 4, 6, 7, and 8 are OFF.
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