Appendix A • RS-232 Programmer’s Guide
Extron • System 4
xi
Switcher Series • User’s Manual
A-2
System 4
xi
-Initiated Messages
When AC power is initially applied to the System 4
xi
, the following System 4
xi
-
initiated messages (underlined) are sent to the Host:
¿
(C)COPYRIGHT 1997, EXTRON ELECTRONICS SYSTEM4LQxi, V4.0
¿
¿
SYS 1
¿
System 4
xi
power is ON
¿
Ax
¿
x = the Audio channel number selected
¿
Vx
¿
x = the Video channel number selected
When the Main power from the front panel is applied to the System 4
xi
, the
following System 4
xi
-initiated messages are sent to the Host:
¿
SYS x
¿
(as described above)
¿
Ax
¿
(as described above)
¿
Vx
¿
(as described above)
When audio and/or video settings are changed using the front panel, the
following messages or message combinations are sent to the Host:
¿
Ax
¿
(as described above)
¿
Vx
¿
(as described above)
¿
Cx
¿
Both video and audio settings for channel number x have been changed
When there is a change in the audio gain setting from the front panel, the
following message is sent to the Host:
¿
RECONFIG
¿
*
* This message will vary depending on the System 4
xi
model.
