Configuring The Audio Controls; Setting The Coarse Audio Delay; Setting The Fine Audio Delay; Table 6-3: Audio Controls Menu - evertz 7721AE8-DEE-HD Manual

7700 MultiFrame Manual
7721AE8-DEE-HD HD-SDI/SD-SDI Audio Embedder with Dolby Encoder
6.4.

CONFIGURING THE AUDIO CONTROLS

The Audio Control menus are used to configure the coarse and fine audio delay; the mode of the sample
rate converter, C-bit control, which embedded group to enable, and the demux behaviour with a loss of
video. Table 6-3 below shows the items available in the Audio Control menus. Sections 6.4.1 to 6.4.6
provide detailed information about each of the menu items.
ADLY Coarse Audio Delay
Fine Audio Delay
ASDL
SRC SRC Mode
CBIT C-Bit Control
Embedder Group 1
EMB1
Enable
Embedder Group 2
EMB2
Enable
Embedder Group 3
EMB3
Enable
Embedder Group 4
EMB4
Enable
Demux Loss of Video
DLVM
Mode

6.4.1. Setting the Coarse Audio Delay

Audio Control
ADLY
0
0 to Max

6.4.2. Setting the Fine Audio Delay

Audio Control
ASDL
-33ms to +33ms
0
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Sets audio delay in frame of video increments (coarse).
Sets audio delay displayed in milliseconds (in 1 sample
increments)
Sets the audio sample rate converter bypass mode.
Sets the AES channel status bit handling.
Enables audio embedder for group 1.
Enables audio embedder for group 2.
Enables audio embedder for group 3.
Enables audio embedder for group 4.
Sets the action of the audio demux in case of input video loss.

Table 6-3: Audio Controls Menu

This control adjusts the audio delay in terms of video frames (coarsely).
The delay is respective of the input video. The range of the parameter is
based on the operating standard of the module, since this parameter follows
the video frame phase.
This control adjusts the audio delay (finely). This parameter is displayed in
milliseconds and
(approximately 20.83μs).
If ADLY (see section 6.4.1) is set to 0, then the parameter range is 0 to
33ms.
Otherwise, fine audio delay ranges from –33ms to +33ms.
Revision 1.2
adjusted in approximate sample increments