180
SDI Audio Mono Sum
Parameter Default Setting range Description
CH1/2-CH15/16 Disable
Disable
Enable
Enable: Outputs the stereo pair
channels as a mono sum.
SDI Output Clock Select
Parameter Default Setting range Description
Group 1 Auto
Auto
Reference
CH 1/2
CH 3/4
Selects an audio clock per group for SDI
embedded audio output.
Auto: Automatically selects audio clock input
in the NON-PCM signal channel, if an input
NON-PCM signal is in the selected SDI
embedded audio group. Automatically
selects audio clock signal in the smallest
numbered channel, if all signals in the audio
group are NON-PCM. Automatically selects
audio clock signal synchronized to the output
video signal, if all signals in the audio group
are PCM.
*1
Reference: Audio clock synchronize with the
output video signal. (Used to synchronize
audio with the video signals processed in the
SRC.)
CH 1/2 to 15/16: An input audio clock in
Source channels CH 1/2 to 15/16.
*2
To output asynchronous audio signals,
select one input channel pair for each group.
*1
For SD-SDI outputs, Reference is
automatically selected regardless of the
setting.
Group 2 Auto
Auto
Reference
CH 5/6
CH 7/8
Group 3 Auto
Auto
Reference
CH 9/10
CH 11/12
Group 4 Auto
Auto
Reference
CH 13/14
CH 15/16
*1 Embedded audio signals are divided into 4 groups. Each group consists of 4 audio
channels; Group 1 (CH 1 to 4), Group 2 (CH 5 to 8), Group 3 (CH 9 to 12), Group 4 (CH 13
to 16). The audio signals in the same group are transmitted together using the same audio
clock (48kHz).
PCM audio signals will be synchronized to a genlock signal in the SRC (sampling rate
converter) so as to synchronize with the output video signal. Non-PCM audio signals
(compressed audio data such as AC-3) do not go into SRC. If the non-PCM audio input
signal is asynchronous with the output video signal, the non-PCM audio output signal will
be asynchronous. The asynchronous non-PCM audio signals can be embedded to SDI
video signals by selecting an audio clock for each audio group. To do so, all 4 channels in
the respective audio groups must be synchronous. Assign 4 synchronous audio signals to
channels in a group. (See section 9-3-11. “SDI Audio Output Settings” for details.) Then
the asynchronous audio signal will be properly embedded to the video signal.
*2 See section 9-3-4 “Source Select” for details on SOURCE settings.
NOTE
To change the Source signal assignments, see section 9-3-4 “Source Select”. For
details on how to set down mix, see section 9-3-9 “5.1Ch Down Mix”.
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