Grass Valley NV9641A v.1.0 - Manual (Page 88)

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GPIO
Configuring Inputs
4 Route a source to a destination.
If you choose this behavior, select a source and a destination in the two drop-down lists.
GPIO Summary
The NV9641A has 4 relays that can switch on or off your external devices, based on (1) NV9641A
input transitions and (2) events in the router control system.
Its 8 inputs can be switched on or off by your external devices. When an input transitions on or
off, the NV9641A can respond with one of 4 actions, such as executing a salvo. (It is the system
that actually executes the salvo.)