Grass Valley NV9000-SE v.5.0 - Manual (Page 217)

199
NV9000-SE Utilities
User’s Guide
In this dialog, you create a Boolean expression involving sources destinations, port status, and
GPI (input) status. When the conditions of the Boolean expression are met (i.e., the expression is
“true”) the relay closes. When the conditions are not met, the relay opens. The illustration shows
one such Boolean expression.
The actual logic takes place in the router control system, based on the state of the panel’s inputs
and other system-wide events. The router control system sends signals to the panel instructing
it to open or close its relays.
Configuring Inputs
Clicking an input button (one of 8) displays the GPI input dialog:
[The dialog is different for the NV9575-VF.)
An event is signalled when a transition occurs on the input from on to off or from off to on. You
can configure the panel to recognize either occurrence on any of the 8 inputs, and specify one of
4 behaviors for each event or both:
1 Execute a salvo.
2 Route the “previous source” (that was switched by
any control panel) to a destination, even
if it is the same as the current source.
3 Route the “previous source” switched by
this panel to a destination, even if it is the same as
the current source.
4 Route a source to a destination.
GPIO Summary
The NV9609 has 4 relays that can switch on or off your external devices, based on (1) the panel’s
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 panel can respond with one of 4 actions, such as executing a salvo. (It is the control
system that actually executes the salvo.)