Dolby Laboratories P/N 91659 - Manual (Page 28)

DolbyRemote Installation and Operation Dolby Digital Parameters
4-12
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Autodetect: Automatically detects and processes PCM and pre-encoded
bitstreams. Invalid bitstreams will be assumed to be PCM data, and encoding
will be enabled.
Aux Data
Aux Data allows you to indicate whether the auxiliary data field is present in the
encoded Dolby Digital bitstream. When present, serial data will be received from the
Aux Data Input port and added to the auxiliary data field of the output Dolby Digital
bitstream. Three data rates are supported: 1200, 2400, and 9600 bits per second. Since
the addition of auxiliary data reduces the number of bits available for audio data, the
allowed auxiliary data rates are limited for some Dolby Digital data rates.
Use of the Aux Data Input mode is restricted to the PCM input format and cannot be
enabled if the Pre-encoded or Autodetect Input Format is selected. Aux Data
Input may be used when the Multiplex Mode is enabled, however the auxiliary data
will only be added to a bitstream encoded by the DP567 or DP569.
Source
Source allows you to select between analog and digital audio input sources. Only one
input source can be active at a time. This parameter is not available on the DP569.
Channel Assignment
Channel Assignment allows you to determine the mapping of input sources to audio
channels. Channel assignment is represented in the form A/B C/D E/F, where
channels A through F are mapped to input sources 1 through 6, respectively.
For example, when the Input Channels parameter is set to L/R C/LFE Ls/Rs, the 1/2
input is the source for the Left and Right channels, the 3/4 input is the source for the
Center and Low Frequency Effects channels, and the 5/6 input is the source for the
Left Surround and Right Surround channels. This parameter is not available on the
DP567.
In addition to the input channel assignment presets provided in the DP569, the DP561
also allows an arbitrary assignment of input channels.
4.5.2 Output
Format
Format allows you to determine the mode of the AES/EBU output bitstream and to
specify how the data is packed within that bitstream. The selection is either
professional or consumer and 16 or 32-bit. The default parameter is Professional 32-
bit. If Multiplex mode is currently enabled then it is not possible to output
Professional 32-bit or Consumer modes.