Imagine Selenio X100, Installation And Operation Manual

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Selenio X100
Installation and Operation Manual
79
Audio Embedding Errors
To avoid embedding errors, follow these guidelines:

Set the embedding mode to Auto .
If the group is present, it will be overwritten; if it is not present, it will be appended. The
overwrite and append errors are actually warnings that the operation is not being
performed.

In SD-SDI mode, do not overwrite embedded groups of 20-bit audio samples with
groups of 24-bit audio samples.
The required extended data packet information appended to that group may overwrite
a pre-existing audio group. For 24-bit audio embedding, use the
ADS Clean feature
provided (see details below).
ADS Clean
Enabling the ADS Clean parameter removes all the audio groups presently embedded in
the input SDI stream. This process leaves the ADS region clean prior to audio embedding.
By enabling the ADS Clean parameter, you will remove all ancillary data packets in the
Horizontal Ancillary data space (HANC). If there are data packets other than audio in the
HANC space (for example, RP196 or SMPTE-12M-2 ATC HANC timecode), this data will also
be removed along with the audio data.
Therefore, before enabling the ADS Clean parameter, ensure there are no pre-existing
non-audio data packets in the HANC space. To overwrite pre-existing audio groups instead
of wiping out pre-existing audio data, use the
Overwrite embedding feature (page 78).
Embedding Errors
During the embedding operation, errors may arise for the following reasons:

An attempt is made to append a group when it is already present

An attempt is made to overwrite a group when it is not present

An attempt is made to overwrite a group composed of 20-bit audio samples with a
group composed of 24-bit audio samples

There is an overflow condition in the ancillary data space

There is an overflow or underflow of the internal buffer
Table 3-10 Audio Embedding Error Descriptions
Error Description
Group (1–4)
Append
Embedding
Error This error occurs if the embedder is set to Append mode for a particular
audio group, but that audio group already exists in the incoming SDI
signal.
In this case, the embedder does not embed another audio data and
control packet of the same audio group, as this results in incorrect audio
sample distribution.
Group (1–4)
Overwrite
Embed Error This error occurs if the embedder is set to Overwrite mode for a
particular audio group, but that audio group does not exist in the
incoming SDI signal.