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

Page 65

Audio Inputs 3 and 4

Audio Inputs 3 and 4 are not capable of PASSTHRU MODE; they can only encode MPEG1 Layer 2. They also cannot encode
Dolby Audio. 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 (encodeor the secondary audio can be set to off
(*.ecmd SAS)

Encode = 0

*.ECMD AMO
[mode][type][rate]

Audio Input

selects the type of incoming audio signal to be encoded. Available
on in Encode Mode.

Analog = 0
SDI = 1
AES = 3

*ECMD AIN [type]

Type

selects the audio type in Encode Mode.
Linear PCM/E2 is only available with AES inputs, if selected, all
associated specifications will auto-apply.

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.

text field;
user-defined
64-640 kBits/sec
avail

*.ECMD AMO
[mode][type][rate]

Audio Sync
(ms)

audio sync offset in milliseconds (ms) with an available range of
-800 ms to +800 ms

text field;
user-defined

*.ECMD AUS

Audio Level

volume in decibels (dB); range of -18dB to +8dB in 1dB increments
. Available only in Encode Mode

range of -18
through +8

*.ECMD ALV

Language
Descriptor

3 characters available for describing language

text field;
user-defined

*.ECMD LAO

SDI Audio
Matrix

Per SMPTE 272/299M SDI supports embedded audio Groups 1, 2,
3, 4. This device can route channels from 2 Groups concurrently. 1
and 2 or 3 and 4. Each group has 2 channels and each channel is a
stereo pair. Fpr example, Group 1 3/4 can be routed to any of the 4
audio encoders.

Group 1 1/2
Group 1 3/4
Group 2 5/6
Group 2 7/8

*ECMD SMX