![](/images/new-backgrounds/1159000/159000105x1.webp)
Appendix A •
System 4xi -Initiated Messages
When AC power is initially applied to the System 4xi, the following System 4xi- initiated messages (underlined) are sent to the Host:
¿(C)COPYRIGHT 1997, EXTRON ELECTRONICS SYSTEM4LQxi, V4.0¿ * ¿SYS 1¿ System 4xi power is ON
¿Ax¿ x = the Audio channel number selected
¿Vx¿ x = the Video channel number selected
* This message will vary depending on the System 4xi model.
When the Main power from the front panel is applied to the System 4xi, the following System
¿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¿
Extron • System 4xi Switcher Series • User’s Manual |