SEL-1FS1/SEL-2FS1 and SEL-1XD1/SEL-2XD1
Installation and Operation Manual
Installation, Operation, and Specifications
© 2015 Imagine Communications Corp.
Proprietary and Confidential.
Version 2.8 | Page 66
Generic Data Passing
On XD1 modules, VANC data are removed when video is being processed. The
Generic VANC
data
passing function makes it possible to select one kind of VANC data (identified by its DID/SDID) and pass
it from input to output. This requires the configuration of the following parameters:
Data DMB x >
Generic Data Passing > Data DID (hex)
and
Data SDID (hex)
. Field information for the VANC data is also
required for the system to understand the nature of the VANC data and pass it properly.
The default value for DID/SDID is
ARIB
data. When generic data passing is configured to pass
ARIB
data,
the current audio mode is reported, and the output current audio mode is configurable.
Audio Embedding
The following topics are included in this section:
•
Handling of Non-PCM/Compressed Audio Signals (on page
66
)
•
Synchronizing Embedded Non-PCM Audio (see "Audio Embedding Control" on page 67)
•
Audio Embedding Control (see "Audio Embedding Modes" on page 67)
•
Audio Embedding Modes (on page 67)
•
Embedding Errors (on page 72)
•
Preventing Embedding Errors (on page 72)
Handling of Non-PCM/Compressed Audio Signals
The FS1 and XD1 modules automatically detect input non-PCM audio signals, such as compressed Dolby
E audio, even without the proper C/V bits set (the C/V bits are corrected in this situation). Detected non-
PCM audio inputs then automatically bypass the sample rate converter and are embedded in the output
SDI stream unprocessed.
You can also manually bypass sample rate conversion using the SRC control parameters located at
Audio
> Sync and Delay.
Synchronizing Embedded Non-PCM Audio
Non-PCM embedded audio sources such as Dolby E or Dolby Digital will automatically bypass the audio
synchronization feature. When the video frame synchronizer is active, this can cause misalignment of
the video-to-audio timing. To resolve this problem, the non-PCM audio sources should pass through the
video frame synchronizer—which will automatically add an equal amount of audio delay and video
delay. This can be accomplished by simply disabling the audio embedder at the output stage for the
associated audio pair. The following conditions apply:
•
The
ADS Clean
feature must be disabled.
•
The FS1 module is supported, but the XD1 module must have its processing channel output set to
Proc Bypass
.
•
Remapping of the embedded audio to different output pairs is not supported.