Grass Valley AMX-3981 2014 - Manual (Page 99)

GUIDE TO INSTALLATION AND OPERATION
AMX-3981 | 93
The link mode parameter is only enabled for a 5.1 program. For all other programs, it cannot be modified by the user,
but its value may change depending on the conditions listed above.
When changing the ALC filter mode, the link mode may be affected. For a selected link mode, the program channels
can be linked using multiple groups, with independent controls for each of these groups. A separate tab will appear in
the interface for each group. Each tab will have its own loudness monitoring, its presets and its ALC parameters to
configure.
PGM 1 – Upmix
Use the Upmix Mode pulldown to select the Program 1 upmix mode (upmix only functions on program 1):
Pass
Input channels are passed from the input to the output untouched.
Upmix
The first 2 input channels (L & R) are upmixed to generate a 5.1 output regardless of whether the input is 2.0
or 5.1. All other input channels are ignored.
AutoMAX-II
In this mode, the upMAX
tm
will automatically detect the presence of 5.1 or 2.0 channels at the input. When 2.0
is detected, the incoming stereo will be upmixed. When 5.1 is detected, the incoming 5.1 channels will
automatically be passed through untouched.
Follow METADATA
This mode is another way to switch between 2.0 stereo and 5.1 and produce a constant 5.1 output. The
Coding Mode parameter in the first program of the Dolby metadata will set the Operating Mode between Pass
and Upmix modes.
Note: In Follow Metadata mode, the metadata generator will be automatically turned ON when the upMAX
TM
module is upmixing to provide a valid metadata stream for the upmixed audio content. The generator content
must have been previously configured with valid 5.1 metadata parameters. When the upMAX
TM
module is set
to Pass mode by the incoming metadata stream, the generator will be automatically turned OFF to let the
incoming metadata stream pass through. Refer to Generator Automated mode in the Dolby metadata panel
section for further details.
If the Coding Mode parameter is other than 3/2 (i.e. 5.1 channels) or 2/0 (i.e. stereo channels) or if the
selected metadata path does not carry metadata, the Operating mode will follow the Reversion Mode pull-
down.
Reversion Mode
The reversion mode is only active when the Upmix Mode is set to Follow Metadata. It has no effect in other modes.
When the input metadata disappears, the upMAX
tm
is forced into the operating mode selected using the Reversion
pulldown:
• Pass
• Upmix
• Last Valid
• AutoMAX
Hint - if the module is in the Follow Metadata mode, and the Metadata presence icon is grey, the reversion mode is
active.