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Instruction Manual: Professional Receivers and Decoders (IRD)
Page C-9
ST.TM.TT1220.1
Table C.14: Audio Modulation Results
Audio source
Modulator
Stereo
Mono
Transparent
Left
output
Right
output
Left
output
Right
output
Left
output
Right
output
Stereo (or joint stereo)
L
R
L+R
L+R
L
R
1
1
1
1
1
2
Dual Channel
No.1 (L)
No. 2 (R)
2
2
2
2
2
1
Single Channel (mono)
1
1
1
1
1
1
The Left output and Right output columns refer to the output at the left
and right audio connector, respectively. “L” and “R” refer to the content of
the left and right audio signal present in a stereo transport stream. “1”
and “2” refers to the audio signals in channel 1 and 2 respectively (the two
mono signals present in the Dual Channel audio PID), or 1 for a mono PID.
As seen from the table, Dual Channel PIDs will only provide both channels
to the user if modulation is set to “transparent”. This could for instance be
very useful for a two language service, where each language is sent as a
mono component in a dual channel PID. In both the stereo and mono
configurations, a dual channel PID will only provide one of the audio
channels to the users.
This channel is selected to match the “Aud Lang” setting set up in the TV
Components Menu (see Table C.5). If the language setting does not match
any of the two audio components in the dual channel stream, the first one
will be selected and decoded.
C.3.13
Audio2 Setup Menu
The Audio2 setup menu is virtually the same menu as the TV audio setup
menu, only that it affects the secondary audio output of the decoder, not
the primary.
Table C.15: Audio 2 Setup Menu
Display title: OUT: AUDIO2
SETUP
Description
Section
Outp.Lev[dB]
+/- 6 dBu selectable, in 0.1 dBu steps.
Modulator
Stereo, mono or transparent selectable.
For information on how the parameters affect the output, refer to
Section C.3.12, TV Audio Setup Menu.
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