Cobalt Co9992-4ENC-4K-HEVC Software-Defined Broadcast Encoder - Manual (Page 67)

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Audio Configuration Basic Tab – Common Parameters
The common parameters are shown below.

L/R Group, L/R Channels: SDI embedded audio is typically divided into four groups
(denoted by Group 1 to Group 4); each group has four mono channels (2 stereo pairs),
denoted by Channels 1-2 and 3-4. These controls allow the selection of the desired group
and channel pair. In the large majority of the cases, the first stereo pair is in Group 1,
Channels 1-2, the second stereo pair is in Group 1, Channels 3-4, and so on. The
L/R
Group selection has one additional choice, labeled Custom DID . This allows the
encoder to use a non-standard embedded audio DID (this quite uncommon). If Custom
DID is selected, a new configuration option becomes available, where the DID value can
be entered:

L/R Group DID: Enter the desired Group DID, in hexadecimal. As a reference, the
table below contains the standard DIDs built into the system for Groups 1 to 4.
Some compression standards support 5.1 Surround encoding. If these modes are
selected, additional configuration options become available:
Group SD-SDI DID HD-SDI DID
Group 1 0x2FF 0x2E7
Group 2 0x1FD 0x1E6
Group 3 0x1FB 0x1E5
Group 4 0x2F9 0x2E4