crystal User Manual
Version: 6.6.0/2
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4. The Standard Configuration
4.5
GPIO Functions
The standard configuration does not include any GPIO functionality.
8 x GPI (opto-couplers) and 8 x GPO (silent CMOS relays) are supported.
Typical GPI applications include:
·
Cough switch for MIC sources.
·
External talkback triggering.
·
Incoming call signaling for hybrid sources.
Typical GPO applications include:
·
External redlight switching.
·
Fader start triggering.
·
Emergency PGM mute.
·
Studio loudspeaker mute.
·
MIC "On" tally for the DJ.