Harris ADC Device Server User’s Guide
2-16 Configuration Manager
Secondary Events to Log
GPI Contact: Inserts a GPI contact closure secondary event to the list. For each event, an on
time (offset) and duration value must be entered. An offset indicates how long after the
start of the primary event the contact closure should occur. The duration value sets the
duration of the pulse or length of closure of the contact. The offset is entered in the event’s
on-air field and duration in the DUR field. The GPI closure may be longer than the
associated primary event. Default is enabled.
Back Timed GPI: Backtimed GPI is similar to a standard GPI event, except that the offset is
measured backwards in time from the start of the associated primary event. For example,
a backtimed GPI event with an offset of 5 seconds fires the GPI contact 5 seconds before
the start of the associated primary event. A backtimed GPI event cannot be attached to an
event following a primary upcount event. In this case, the system would not be able to
calculate when to begin the GPI event. Default is enabled.
Sec. Audio/Video: Secondary Audio/Video event; plays material, in addition to the primary
event on air, for use in effects such as keys, audio overs and mixes. Default is enabled.
Back Timed Sec. Audio/Video: Same as Sec. Audio/Video except the secondary’s on-air time is
the amount of time before the primary event begins. In the event Type field, these events
are inserted with types P and T (but not A). No switching is done on these events unless
this is changed. These events can be used as a key/audio over inputs to a master control
switcher. Default is enabled.
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