5.5

19 Using External Audio Devices
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Example of Linking GPI Actions to Trigger Signals
You can configure the GPI to respond to each signal sent by your Avid editing application in
a specific manner. For a simple indicator light, you might create a GPI setting linking the
Record Out signal from your Avid editing application to the GPI Set action (to turn the light
on) and a setting linking the Stop Out signal from your Avid editing application to the GPI
Reset action (to turn the light off).
For information on GPI actions, see “Working with GPI Settings” on page 846.
If you are working with preroll and postroll values, you might also link the Play Out signal
to the GPI’s Pulse action to flash the light on and off repeatedly during the preroll and
postroll periods. (Since the Pulse action does not switch between on and off very rapidly,
your preroll and postroll durations might need to be quite long to allow for the light to flash
enough times to be meaningful.)
For more information on configuring the GPI, see “Configuring a V-LAN VLXi Controller
and GPI” on page 845.
Connecting a V-LAN VLXi Controller and GPI
The V-LAN VLXi controller and VLXi-GT GPI connect to your Avid system through a
direct serial connection as shown in the following illustration.