Imagine communications Selenio 6800 SFS6803+OP+SFS+, Installation And Operation Manual

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Chapter 3
Operation
30
The audio embedding modes are Audio Group ( 1–4 ) Embedding Mode parameters (see
page 61). Table 3-3 briefly describes the Append , OverWrt , and Auto options available
from each of the embedding modes.
Append Embedding
When you select Append embedding, the SFS6803
+
and OP
+
SFS
+
attempt to insert the
audio data and control packets immediately following the last existing data/control packet
in the horizontal ancillary data space (ADS). Append embedding is only valid if the audio
group to be embedded does not already exist.
Figure 3-1 shows how append embedding appears in the ancillary data space when there
is no previous audio or other data.
Figure 3-1 In Append Embedding Mode, Adding Group 1 When No Other Data is Present
When auxiliary data exists in the ancillary data space, appended audio appears following
that data, as shown in
Figure 3-2 .
Table 3-3 Embedding Mode Options
Options Description
Append Attempts to insert the audio data and control packets
immediately following the last existing audio data/
control packet in the horizontal ancillary region (see
Append Embedding on page 30)
OverWrt Attempts to overwrite existing audio data and control
packets of the same group number with the new audio
data (see
Overwrite Embedding on page 32)
Auto Attempts first to overwrite existing audio data and
control packets of the same audio group number;
failing that, it appends the new audio data and control
packets immediately following the last existing audio
data/control packet (refer to the
Group (1–4) Present
parameters on page 53 to determine what audio
groups are already present in the incoming SDI signal)
EAV
ADS before embedding
EAV
ADS after embedding group 1
Group 1