Adtec digital mediaHUB-HD 422 (version 1.01.10_M_2) Manual - Manual (Page 61)

Audio Inputs 1 and 2
Audio Inputs 1 and 2 can encode Dolby Audio and can encode in passthru mode. The control options are the same for both
inputs.
Screenshot:
Image reduced for clarity.
Controls:
Control Function Options API Command
Audio Mode
sets the unit to either use the on-board DSP's to perform audio
compression (encode), or accept compressed Dolby-type
bitstreams at the AES input and merge them into the transport
stream (passthru),or the secondary audio can be set to off (*.ecmd
SAS)
Encode = 0
Passthru = 1 *.ECMD AMO
[mode][type][rate]
Audio Input
selects the type of incoming audio signal to be encoded. Available
on in Encode Mode.
In Passthru Mode, AES or SDI input can be selected. Analog = 0
SDI = 1
AES = 3
*ECMD AIN [type]
Type
selects Dolby Digital or MPEG 1 Layer 2 as the audio type in
Encode Mode.
In Passthru Mode, unit defaults to Dolby E / 5.1 / 2.0 Type.
In Passthru Mode, SDI Dolby E can be accepted.
Linear PCM/E2 is only available with AES inputs, if selected, all
associated specifications will auto-apply. -Dolby Digital
AC3 = 0
-MPEG 1 Layer
2 =2
Linear PCM/E2
= 3
*.ECMD AMO
[mode][type][rate]
Format
MPEG mode; can be set for either Mono or Stereo. Available if
using Encode Mode and MPEG 1 Layer 2 Type\. 0 = Mono
1= Stereo
*.ECMD MCM
Rate
define the rate in Encode Mode. When in Passthru Mode, the rate
is handled by the unit.
text field;
user-defined
64-640
kBits/sec avail
*.ECMD AMO
[mode][type][rate]
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