GUIDE TO INSTALLATION AND OPERATION
XVP-3901 |
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are assigned to silence channels. The second program (PGM 2) can only be configured as a 2.0 stereo program, but
you can use it as a single mono program. The figure below shows some of the most popular operating modes for the
5.1 ALC.
Modules with a –DUP feature the optional upMAX
TM
upmixer function licensed by Linear Acoustic. This processing
creates a 5.1 channel surround field (Left, Right, Center, LFE, Left-Surround, Right-Surround) from a 2.0 channel
stereo input (Left, Right). It is the same technology used on the MOD-LA-DUP-701 module. The figure below shows
some typical configurations of the ALC equipped with the upmixer. The two pictures on the right show the upMAX
TM
in
AutoMAX-II
TM
mode, where the configuration switches automatically between 2.0 and 5.1.
Note: The MOD-LA-ALC-X-YYY works with PCM audio. If non-PCM audio like Dolby-E or AC-3 is fed to the module, it
will be ignored and silenced to prevent interference with the other PCM audio channels.
Latency
The MOD-LA-ALC module processing latency is automatically compensated (to avoid lip-sync issues) when the
additional video frame delay (
Timing
tab) is set to at least one (1) frame.
5.9.5.1 Config
tab
The
ALC PGM x Mode
pulldowns specify the channel configuration for Program 1 & 2 (PGM 1 & 2). Depending on
the ALC model, you may have different possible selections like 5.1, 2.0 or 5.1/2.0. This will indicate in which
configuration you want to operate the module. If you want to do ALC on a stereo channel, select 2.0. For 5.1 input,
select 5.1. The 5.1/2.0 configuration should be used when you have both 5.1 and 2.0 inputs, but you want to do an
upmix on the 2.0 input, hence producing a constant 5.1 output. To upmix a mono channel, use the 2.0 configuration
and assign both inputs to the desired mono channel.
If you have an ALC module with the –DUP upmix functionality, you can also configure the
Upmix PGM 1 Mode.
If you set the ALC to work in 2.0 or 5.1/2.0 mode, the pull-down box offers four different processing solutions:
Pass Mode
Input channels are passed from the input to the output untouched.
Upmix Mode
The first 2 channels (L & R) are upmixed. The other input channels in PGM 1 are ignored.
