Cobalt Digital FUSION 3G 9931-EMDE 3G_HD_SD-SDI Embedder_De-Embedder - Manual (Page 107)

9931-EMDE-OM (V1.15) 9931-EMDE PRODUCT MANUAL 3-55
Operating Instructions
9931-EMDE Function Submenu List and Descriptions
(continued)
Table 3-2 9931-EMDE Function Submenu List — continued
In the example here, event-based presets are set to detect when an SD feed without Dolby E 5.1 is received. In this example,
this event would invoke a failover preset that develops a 5.1-channel upmix to substitute for the normal HD 5.1-channel content
decoded and applied to the card Dolby AC-3 encoder.
When the normal feed with Dolby E 5.1 is again received, a second event-based presets load returns to the card to normal
processing (revert to using Dolby E 5.1 for the decoder source and AC-3 PCM source).
Events-Based Preset
Loading set to Enabled turns
on controls, allowing defined
conditions to be checked.
•
•
•
Conditions (A), (B), and (C) for Event 1 are set to
recognize (when all true), an overall condition
indicative of loss of normal HD feed. In this example:
• Video changing to SD format.
• Loss of Dolby E 5.1 at decoder input and instead
audio consisting of PCM.
• Muting of audio on embedded channels that
expectedly would contain 4 channels of
multi-channel audio.
When all Event 1 conditions
are true, the selected preset is
invoked. (In this example,
Preset 8 would invoke
upmixing a stereo PCM pair to
5.1 content.)
Note: • Checked conditions are triggered upon start of event. Any event-based setup must be done in advance of the
triggering event in order for event to be detected.
• Loss of true conditions does not disengage an event-based triggering. A new set of true conditions must be defined
and then occur to transition from one event-based trigger to another.
• Time required to engage an event-based trigger depends upon complexity of the called preset. (For example, a
preset that invokes multiple changes will take longer to engage than a preset involving only a simple audio routing
change.)
• Make certain all definable event conditions that the card might be expected to “see” are defined in any of the Event
1 thru Event 64 rows. This makes certain that the card will always have a defined “go-to” preset if a particular event
occurs. For example, if the card is expected to “see” a 720p5994 / Dolby E5.1+2 stream or as an alternate, a
525i5994 / PCM stream, make certain both of these conditions are defined (with your desired go-to presets) in any
two of the Event 1 thru Event 64 condition definition rows.
Conditions (A), (B), and (C) for Event 2 are set to recognize (when all
true), an overall condition indicative that the normal HD feed is again
available. In this example:
• Video changing to 720p5994 format.
• Dolby E 5.1 again detected by the card Dolby decoder.
When all Event 2 conditions are true, the
selected preset is invoked. (In this example,
Preset 1 would invoke routing decoded
Dolby audio to the card audio bus.)