Gpi Events - Videonics AB-1 Edit Suite User Manual

GPI Events

Typically, a GPI (general-purpose interface) Event is used to send a trigger
command to a titler or character generator. The titler will then play a screen of
titles over your video footage before it is sent to the recorder.
Your titler, if you have one, should be connected to the GPI-T port on the back
panel of Edit Suite. If you do not have a mixer or switcher, you can add a second
titler or GPI device to the GPI-M port. If you do this, make sure you change your
GPI-M choice in the CONFIG menu to GPI.
GPI Events are modifiers of your Scene and Source Events. As such, the event
number for a GPI Event is the same as the Scene or Source Event it modifies, as
shown below. If you change the event number for the Scene or Source Event, the
GPI Event number is changed automatically.
Event Number
Event Number
GPI Port (T or M)
Notice the down arrow on the Scene Event and the up arrow on the GPI Event.
The arrows are called grouping arrows and indicate that there are events (in this
case the GPI Event) related to the Scene Event. Events that are grouped are called
a logical event group.
If there were additional modifier events following the GPI Event, the GPI Event
would have both an up and a down grouping arrow and the subsequent event
would have an up arrow.
How Many GPI Events per Scene or Source
You can have up to 10 GPI Events associated with a single scene or Source Event.
Edit Suite will not prevent you from adding more than 10 GPI Events; however,
when it previews or records your production only the first 10 will be processed.
Fixed, Relative In, Relative Out
GPI Events can be sent at a fixed time code, at a time relative to the start of the
associated scene (Relative In), or at a time relative to the end of the associated
scene (Relative Out).
The following are three sample GPI Events, each using a different time reference,
but each resulting in a GPI Event that would be sent at 00:05:25.00.
001 IN 00:05:20.00
A OUT 00:05:35.00
001 IN 00:05:20.00
A OUT 00:05:35.00
001 FIXED
GPI-T 00:05:25.00
001 IN 00:05:20.00
A OUT 00:05:35.00
Fixed or Relative IN/OUT
Fixed Time or Offset Amount
001 IN 00:05:20.00
A OUT 00:05:35.00