Sencore AG 6000 User Manual page 111

AG 6000 – User Manual
broadcast TV station signal through an RF modulator. The down mix includes the center
and surrounds channels if they are present, and is represented as Lt/Rt (left total, right
total).
The second preset is Monitor. It has moderate processing, no gain boost and its down
mix involves left and right channels only (Lo/Ro). The mode setting is Line as the
default, but may be changed to RF, Custom 0 or Custom 1. In Line mode, the Dolby
Dialog Normalization data is followed along with moderate processing. The default
down mix setting for Monitor is Lo/Ro. The down mix may be changed to Lt/Rt or
Lt/Rt/auto. Lt/Rt auto follows the embedded data in the stream if the producer has a
preferred down mix. It will switch automatically between Lo/Ro and Lt/Rt depending on
the data in the stream. If no mode is specified, the down mix will be Lt/Rt. In addition,
the Dual Mono modes of operation may be selected. They will only have an effect if the
stream is encoded as Dual Mono. Dual Left or Dual Right applies that signal to both left
and right channels of the digital service and left and right channels of any embedded
stream set to PCM. Selecting RF as the compression setting will add 11 dB of gain and
the same processing as the Transmission mode to the AES digital outputs set to PCM
and any embedded outputs set to PCM.
There is an additional selection at the bottom of the Dolby setup pull-down menu. This
allows selection between Professional Mode and Consumer Mode. In Professional
Mode the built-in latency value is 32 ms for all formats. In Consumer Mode, this latency
varies depending on the format. If you wish to monitor using a consumer receiver, you
should choose Consumer Mode. The output sampling rate will always be 48 kHz, even
in consumer. The Consumer/Pro identification bit will be set to Consumer. Normal
operation in the air chain will use the Professional setting. This setting affects both
Dolby Digital (AC-3) and Dolby Digital Plus.
If you want to run with no processing, choose Custom 1, Lo/Ro, and Dynamic Range
disabled. This will still allow gain changes called for in the Dolby metadata via Dial-
Norm settings in the stream.
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