7700 Multiframe Manual
7725DSK-LG / 7725DSK-LG-HD HD/SD Logo Inserter & Media Keyer
Page 3-18 Revision 1.4 VLPRO OPERATION
3.8.2. Configuring the GPI Inputs
The 7725DSK-LG is fitted with 8 general purpose inputs (GPIs) that can be configured to trigger 2
different actions - On Closure and On Open. For example, the On Closure event can be used to load
a preset and perform a transition to the Program Bus. The On Open event for the same GPI can be
used to load a different user preset and perform a transition to the Program Bus. For each event you
can configure a preset to load, transition to perform and logo to display.
GPI can also be configured using GPI script files, which are text-based files that can be programmed
and sent to your unit by Overture™. The syntax is important as the script represents programming code
that will be executed when the allocated GPI trigger event occurs. There are 8 GPI inputs. Each input
has 2 events: close and open. You can program scripts for each of these 16 events. If a script file is
present on the flash file system then the unit will process the script when the event is triggered. If the
script file is not present when a GPI event is triggered, then the internal GPI menu settings will be used.
The GPI script files are text files therefore they can be easily edited in notepad.
GPI CONTROL: This option is used to select one of the GPI inputs (A to H) that will be configured
using the other menu items in the GPI SETUP menu branch.
The Open action section enables the user to configure the GPI Actions. There are 4 options that
configure the actions when the selected GPI closes (CTransition, CLoad, CAction, and CLogo). There
are also 4 options that configure the actions when the selected GPI opens (OTransition, OLoad,
OAction, and OLogo). For the sake of brevity in the manual, only the On Close event options will be
shown.
3.8.2.1. Configuring the Perform Transition Function
The Perform Transition option is used to select whether a transition will occur when the GPI is closed
to ground. The following items are available in the drop down menu:
NO: If you do not want to perform a transition when the GPI is closed, select the NO item.
YES: Select YES to perform a transition when the GPI is closed.
3.8.2.2. Configuring the Load Preset Function
The Load Preset option is used to select the preset that will be loaded when the GPI input is closed to
ground. The following items are available in the drop down menu:
NONE: If you do not want to load a user preset when the GPI is closed, select the NONE
item. If NONE is selected then the existing settings will be used.
1 to 10: Select 1 to 10 to load a specific user preset when the GPI is closed.
3.8.2.3. Configuring the Action
The Action option is used to select the action that will occur when the GPI input is closed to ground.
The following items are available in the drop down menu:
NONE: If you do not wish to perform any action, select NONE.
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