AJA FS2 - Manual (Page 67)

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67 FS2 Installation and Operation Manual — REMOTE Menu Group
3.1–4 GPI 1–4
OUT The setting of this parameter determines whether certain FS2 events will generate a
GPI trigger output at GPI outputs 1, 2, 3, or 4. The GPI interface pinout is presented in
“Appendix B: GPI & RS422 Pinouts” on page 199 .
Interaction of
Presets and GPIs If you use a GPI input trigger to recall a preset, the recall changes the GPI IN Response
setting to whatever GPI IN Response setting the preset contains. As the following
examples explain, this feature offers both the power of serial recalls and the
possibility of triggering a recall that changes GPI IN Response to something
unintended.
Example of a Serial Recall
The advantage of using GPI IN Response with presets is that you can trigger a series or
even a looping series of preset recalls. For example, suppose GPI IN 1 Response in
Preset 1 is set to Preset 2, and GPI IN Response in Preset 2 is set to Preset 1. Triggering
the GPI will toggle between the two presets.
Example of an Unintended Recall
Suppose you trigger GPI IN 1 while the current GPI IN 1 Response parameter is set to
Preset 1. This recalls Preset 1 as expected. However, suppose Preset 1 contains a
stored GPI IN 1 Response setting of No Action. If you trigger GPI IN 1 later, expecting to
recall Preset 1 again, the FS2 instead performs No Action. To prevent unexpected
changes in the GPI IN Response parameters, set these parameters as desired before
storing presets; in the example, set GPI IN 1 to Preset 1 before you store Preset 1.
3.1–4 GPI 1–4 OUT Selections Selection Descriptions
No Action (default)
Alarm
No Video 1
No Video 2
No Ref
Does not trigger a GPI output regardless of event.
Generates a GPI output trigger if an internal alarm condition occurs.
Generates a GPI output trigger if no video is detected at the selected input.
Generates a GPI output trigger if no video is detected at the selected input.
Generates a GPI 1 output trigger if no video is detected at the Ref video
input.