Harris ACO6800+ISD - Configuring the Switching Mechanism; GPI Input Control

22 ACO6800+ Installation and Operation Manual
Copyright © 2009, Harris Corporation
Chapter 3: Configuration and Operation
•The Sync Mode Set parameter must be set to Genlock.
• Genlock must be available, with a frame rate that matches the operation
standard.
• Input video must be synced to Genlock.
•The SRC (1-8) Bypass parameter must be set to Yes.
Note
If the SRC Bypass Mode parameter is set to Auto, ACO6800+ will enable
SRC bypass automatically when Dolby data is detected.
Configuring the Switching Mechanism
Three factors control the output channels on the ACO6800+ :
•GPI control
• Alarm severity levels for each input channel
• Parameters that can be manually switched in CCS Navigator or at the card
edge
Use the following parameters in the Switch Settings group of parameters to
define the switch priority levels:
• Group A or Group B Switch High Priority (the default setting is GPI Input)
• Group A or Group B Switch Medium Priority (the default setting is
Manual)
• Group A or Group B Switch Low Priority (the default setting is Alarms)
A high priority event overrides a medium priority event, which overrides a low
priority event. The three options are mutually exclusive.
As an example, the current settings might start out in these default values:
• Group A Switch High Priority: GPI Input
• Group A Switch Medium Priority: Manual
• Group A Switch Low Priority: Alarms
By changing the Group A Switch Low Priority setting to GPI Input, the
module automatically changes the Group A Switch High Priority setting to
Alarms. This new setting is exclusive, and will not conflict with the Medium
and Low settings.
GPI Input Control
Table 3-3 indicates what happens when a GPI Input is activated—for example,
pressing a button on a panel—when the switching is not triggered by other
higher priority events than GPI Input.