Grass Valley AMX-3981 2014 - Manual (Page 85)

GUIDE TO INSTALLATION AND OPERATION
AMX-3981 | 79
If the Coding Mode parameter (in the Dolby Metadata panel) 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.
Coding Mode (Metadata): Operating Mode:
3/2 PASS
2/0 UPMIX
1+1, 1/0, 3/0, 2/1, 3/1, 2/2, or metadata is not present Reversion Mode
The Reversion Mode pull-down sets the default Operating Mode to: Pass, Upmix, Last Valid (Last valid Coding
Mode), AutoMAX.
Adjustments
The “surround field” can be adjusted with the Center channel Width control and the Surround channel Depth control.
The bass enhancement signal for the LFE channel is derived from the Left, Center and Right channels. The LFE
checkbox and LFE Channel Level (%) slider control the LFE output.
Latency
The upMAX
tm
processing latency is automatically compensated by the card.
Note: when in UPMIX and AUTOMAX modes, the last channel pair of the output channels selection (channels 7-8,
15-16, 23-24 or 31-32) are reserved for future use and muted.
Note: The upMAX
tm
works with PCM audio. If non-PCM audio like Dolby E or Dolby Digital is fed to the module, it will
be ignored and silenced to prevent interference with the other PCM audio channels.