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Q:
-Did Digi change anything with the GPI pins on the USD after Pro Tools 4.3?-I have upgraded Pro Tools from v4.3. The red light which is controlled from a pin on the GPI output of the USD does not work anymore. However, I can switch the red light on when zeroing out the Master Fader!
A:
USD GPI output assignments for Pro Tools 4.3.1 (and later). Pro Tools uses the GPI outputs as follows:GPI Output 0 (relay): PlayGPI Output 1 (relay): Record ReadyGPI Output 2 (relay): Fader Start #1GPI Output 3 (relay): Fader Start #2GPI Output 4 (TTL): StopGPI Output 5 (TTL): RecordingIn addition, Pro Tools uses some of the above for the following modes:Transport Cueing, Shuttling, or Jogging: GPI 2 and GPI 3 simultaneously ONTransport Fast Forward: GPI 2 ONTransport Rewind: GPI 3 ONTransport Cued: GPI 4 ONTransport Paused: GPI 0 and GPI 4 simultaneously ON
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