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 71
The figure below shows how overwrite embedding appears in the ancillary data space when there is pre-
existing Group 1 audio. This operation is successful.
Figure 49:
Overwrite Embedding Mode When There is Group 1 Audio in the Group 1 Space
Audio Embedding Errors
Table 8:
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.
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.
