Imagine communications Selenio 6800 SFS6803+OP+SFS+, Инструкция по установке и эксплуатации

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SFS6803
+
and OP
+
SFS
+
Installation and Operation Manual
37
Audio Synchronization
By default, SFS6803
+
and OP
+
SFS
+
synchronize de-embedded or AES input audio with
timing information from the video frame synchronizer prior to re-embedding the audio.
(See page 60.)
If you deactivate the Audio Track Video parameter, you can output unsynchronized audio.
You can set the Audio LOV Output Mode parameter so that the audio is either passed or
muted in the event of loss of video.
Audio Path The output audio source selection consists of two sets of controls.

Input Sample Rate Conversion (SRC) routing source selection

AES In (1A/1B to 8A/8B) (with AES options)

Demuxed audio (Group 1 ch 1/2 – Group 4 ch 3/4)

Output Audio Source Selection for the embedded audio and output AES
Each output embedded Audio channel and Audio procamp AES output can be assigned
to one of the following sources:

SRC(1a to 16b)

In Pair (SRC1a+1b to 16b) Sum

TstTone 400 Hz

TstTone 1 kHz

TstTone 2 kHz

TstTone 4 kHz

EBU R68

SMPTE RP155

SRC1a+2a

SRC1b+2b

SRC2b+3b

SRC2a+4a

SRC2b+4b
You can reassign each of the 8 AES channels (with the AES8 option) to one of the
following sources:

Input Demuxed audio (Ch1/2 – Ch 15/16)
Input demux refers to audio deembedded prior to the frame synchronizer (the
input to the module).

Output Demuxed audio (Ch1/2 – Ch 15/16)
The Output Demux options output audio deembedded after passing through the
frame synchronizer. This can be used to synchronize Dolby-E without the need to
decode-synchronize-re-encode.

A corresponding Audio procamp AES output ( Audio procamp 1A/1B - 8A/8B to
AES1-8 )
Note: The Demuxed audio selection for AES outputs is provided for the minimum audio
propagation delay purposes. This audio path also provides a direct output of the non-PCM
audio such as Dolby if Frame Synchronizer is set to synchronizer mode. AES outputs in this
mode are not AES11 compliant and are not aligned with video.