AJA FS2 - Manual (Page 182)

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Dolby Framer
Sync This parameter enables or disables automatic timing correction of the Dolby E
signal.
When ON, Dolby E timing is auto-corrected to the minimum delay possible while
synchronizing with the video blanking interval. Normal Audio Delay parameters for
the corresponding Dolby Framer Input channel pair are disabled.
When OFF, no Dolby E timing auto-correction is performed and Normal Audio Delay
parameters are enabled.
When set to OFFSET, Dolby E timing is first auto-corrected to a nominal delay while
synchronizing with the video blanking interval; then the delay is adjusted by the
Offset specified in 9.2 Dolby Framer Offset (Frames) and 9.3 Dolby Framer Offset
(Samples). Normal Audio Delay parameters for the corresponding Dolby Framer
Input channel pair are disabled.
In ON and OFFSET modes, if 1.0 Audio Input is set to Channel Map or Stereo Map, the
6.x Audio Delay menus for that pair are hidden.
Notes: Dolby Framer status is available on the front panel Dolby Framer status
menu or the Status page of the web UI.
If the Dolby Framer cannot lock the audio signal to the video output, an alarm is
triggered. (This may happen with non-Dolby E signals, or with Dolby E signals
having an incompatible frame rate.)
The Dolby Framer is incompatible with audio Channel Map mode. It works only with
Stereo Map or single-source audio inputs capable of carrying Dolby E pairs. If the
Dolby Framer is enabled while the input source is set to Channel Map, Analog, HDMI,
or Dolby Decoder, an alarm will result, and the Dolby Framer status will be shown as
"Conflict". Also note that Dolby Decoder is not a valid Framer source, since the Dolby
is already decoded into PCM audio by the time it reaches the audio processor.
(9.0) Dolby Framer Sync Selections Selection Descriptions
Off (default)
On
Offset
No Dolby E timing synchronization with vertical blanking.
Dolby E timing is auto-corrected to the minimum delay possible to
synchronize with the video blanking interval.
Timing for the Dolby E channel pair is auto-corrected to a nominal delay
synchronized with video blanking. Then it is further adjusted up or down
by the number of samples specified in 9.2 Dolby Framer Offset.