Extron • System 4
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Switcher Series • User’s Manual
Appendix A • RS-232 Programmer’s Guide
Selecting Inputs Using Delimiters
When selecting inputs to the projector, or display (Dsp) and/or the System 4
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switcher (Sw), audio and video can
be switched together (follow) or separately (breakaway). An input is selected by its ASCII number, followed by a
delimiter character. The delimiter ends the command and also determines which inputs (audio/video) are
affected. System 4
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delimiters are listed and explained below. There are four delimiters that affect the
System 4
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. They are:
!
Affects Audio & Video (Aud/Vid) for the switcher (Sw) and affects only video for the projector (Dsp/Sw)
@ Affects Audio and Video (Aud/Vid) for switcher only (Sw)
$
Affects Audio only (Aud) for the switcher (Sw)
&
Affects Video only (Vid) for both projector and switcher (Dsp/Sw)
Examples:
Aud/Vid
Dsp/Sw
ASCII
Hex
Response Result Description
Select Input 2
Aud,Vid
*Dsp,Sw
2!
32,21
¿
C2
¿
Channel 2 selected
Select Input 16
Aud,Vid
*Dsp,Sw
16!
31,36,21
¿
C16
¿
Channel16 selected
Select Input 2
Aud,Vid
*Sw
2@
32,4Ø
¿
C2
¿
Channel 2 selected
Select Input 16
Aud,Vid
*Sw
16@
31,36,4Ø
¿
C16
¿
Channel 16 selected
Select Input 2
Aud
*Sw
2$
32,24
¿
A2
¿
Audio Ch 2 selected
Select Input 16
Aud
*Sw
16$
31,36,24
¿
A16
¿
Audio Ch 16 selected
Select Input 3
Vid
Dsp,Sw
3&
33,26
¿
V3
¿
Video Ch 3 selected
Select Input 15
Vid
Dsp,Sw
15&
31,35,26
¿
V15
¿
Video Ch 15 selected
* Audio switching affects only the System 4
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and not the display device.
A-7
