Extron • System 4
xi
Switcher Series • User’s Manual
Appendix A • RS-232 Programmer’s Guide
A-15
Request System Configuration - CMD12 (3Ch)
4
Request the System 4
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Configuration.
Format:
ESC, CMD12, EOT
Response:
ESC, CMD12, ERC, LD Sync, RGB Delay, Aud Mute, Status 1, LD
xi
Misc,
reserved, EOT
Where: ESC, CMD12 = 1Bh, 3Ch
LD Sync
81h = Composite Sync with no serration pulses
82h = Sync negative (horizontal & vertical)
83h = Composite Sync with serration pulses
84h =
6
Sync positive (horizontal & vertical)
85h =
6
Sync positive horizontal, negative vertical
86h =
6
Sync negative horizontal, positive vertical
RGB Delay
80h - 8Ah = RGB Delay in 0.5 second steps
(values range from 0 to 5 seconds)
Aud Mute
80h = Audio is not Muted
81h = Audio is Muted
Status 1
80h - 83h (See table below.)
Bit #
7·6·5·4·3·2
1
0
Function:
Sys Power
Model
Power is Off
1·0·0·0·0·0
0
x
Power is On
1·0·0·0·0·0
1
x
Sys 4C
1·0·0·0·0·0
x
1
Sys 4LD, 4LD
ex
,
4LQ
ex
1·0·0·0·0·1
x
0
Sys 4LD
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,
4LQ
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1·0·0·0·0·1
x
0
LD
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Misc
6
80h - AAh (See table.)
Bit #s
76
54
32
10
Function:
–
Demo
Freeze VGA
Demo mode On
10
01
xx
xx
Demo mode Off
10
10
xx
xx
Freeze On
10
xx
01
xx
Freeze Off
10
xx
10
xx
Not VGA resolution
10
xx
xx
01
Force VGA resolution
10
xx
xx
10
reserved
80h = reserved
EOT
04h = End Of transmission
Example: (Request System Configuration)
1Bh, 3Ch, 04h
Response:
1Bh, 3Ch, 80h, 83h, 80h, 81h, 82h, A9h, 80h, 04h
Says: LD Sync = Composite with serration pulses, RGB Delay = none, Audio is
Muted, Model = System 4LD
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, 4LQ
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, Switcher Power = On, Demo Mode = Off,
Freeze = Off and VGA Resolution is not forced.
4. This command is only available in
System 4
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units with the following
firmware revision levels, or higher:
System 4LD
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– revision 3.0
System 4LQ
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– revision 4.0
6. Only available on System 4LD
xi
and System 4LQ
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