Some projectors can come out of mute even faster. This will preserve lamp life and prevent overheating.ĪV Unmute - send this command to come out of AV Mute, wait 1 second then begin an image fade-in. Just make sure to put in a cue for preshow that fades out and stops this image and mutes the projector for the top of the show.ĪV Mute - send this command after completing a fade to black that will stay up for a long time. You can auto-follow this into additional script cues to unmute and switch inputs to "reset" the projector for the top of the show and send a test image such as the classic indian head test pattern. Power On - send this command when the light board operator runs the cue to warm up the lights - usually called a prewarm cue. Tripp Lite makes an excellent VGA + Serial extender that works over CAT5 cable. The syntax of these serial commands is sometimes in the user manual, or available as a separate downloadable PDF from the manufacturer. Most projectors have a RS-232 serial port which will allow you to do things like turn the projector on and off, switch video inputs, and close the shutter or "AV Mute" to save lamp life when there are no projections. It is fairly easy to connect a USB MIDI interface between the Mac and the "MIDI OUT" of your light board. That way projected scenery will fade in and out with area lighting during scene changes. If you are using QLab for video cues, I suggest having it triggered by the light board as most projections need to be synchronized with lighting.
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