User Manual

Using a GPI Device with the Audio Punch-In Tool
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When you use the Audio Punch-In tool without any preroll or postroll, the following occurs:
• Record Out is sent when recording begins.
• Stop Out is sent when recording (and playback) ends.
When you use the Audio Punch-In tool with preroll and postroll, the following occurs:
• Play Out is sent when preroll begins (the position indicator begins moving in the Timeline,
and the Play In/Out button in the Audio Punch-In tool blinks green).
• Record Out is sent when recording begins (the Record button in the Audio Punch-In tool
blinks red).
• Play Out is sent when recording ends and postroll begins (the Stop button in the Audio
Punch-In tool changes to blue).
• Stop Out is sent when postroll ends (the position indicator stops moving).
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Record Out and Play Out repeat if you perform additional recordings.
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 887.
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 886.
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.