Grass Valley Maestro Master Control Installation v.2.4.0 - Manual (Page 202)

202 MAESTRO Installation and Service Manual
Section 5 — The Maestro Configuration Editor
Identifier
The numbers in this column refer to the 16 ports on the GPIO connector.
Any port from 1 to 16 can be selected in any order. The 16 available ports
can be assigned only once, either as a GPI or a GPO depending upon its
intended usage.
Sub System
Select the Action option from the drop-down list.
The other available sub system selection with the MaestroGPI device types
is “EAS.” Although this implies it can only be used with Emergency Alert
System implementations, it is generically used to externally trigger the
insertion of keyers and audio overs.
EAS Messaging Warning, EAS Messaging Watch, and EAS Messaging Test
options have been added to the list of options.
Purpose
EAS Test, EAS Warning, EAS Watch, EAS Messaging User1, EAS Mes-
saging User2, EAS Messaging User3, EAS Messaging User4. Have been
added to the purpose list.
Select the Transition option from the drop-down list.
Note Transition is the only choice when MaestroGPI is the device type.
Trigger Type
Trigger Type can be “Level” or “Pulse.” If Pulse is selected, the input pulse
duration must be one field or more.
Trigger Duration
This column is not used in this application.
Trigger Sense
Select “High” if the external device is normally low and will send between
3 and 10 V to assert “Transition.” Select “Low” if the external device is nor-
mally high and will present zero V to assert “Transition.”
When finished configuring the table, select the Apply or OK buttons . The
Name of the GPIO Definition set will now appear in the set panel. The set
is assigned to the appropriate Maestro channel (Processor) using the
Channel Setup table.