Model DP569 User’s Manual Front-Panel Menus
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if the input audio signals are not both synchronous and phase aligned with the
reference signal.
There are some restrictions on the clock source selection:
• If Ref In-SRC On or an Internal clock source is selected the current Input
Format must be PCM.
• If Digital Input or an Internal clock source is selected, the Multiplex Mode
must be disabled.
Input Format
• PCM: Dolby Digital encoding will be enabled.
• Pre-encoded: Pass-through mode will be enabled. Pre-encoded bitstreams
move through the unit, unmodified, to the output.
• Autodetect: Automatically detects and encodes PCM audio, and passes
through pre-encoded bitstreams. Invalid bitstreams will be assumed to be
PCM data, and encoding will be enabled.
WARNING:
If you choose input format PCM but supply the input with pre-
encoded material, you could damage your ears, speakers, or both
due to the full-scale digital output.
Output Format
Output Stream #
The default setting is zero.
Output Mode
Determines the mode of the AES3 output bitstream and how the data is packed
within that bitstream. The selection is either professional or consumer and 16 or
32-bit. The default is Professional 32-bit.
Time Stamp
If enabled the encoded output bitstream contains timecode information packets,
known as timestamps. These are used by DVD authoring systems to synchronize
the encoded audio to video. This is set to disabled for broadcast applications.
Time Stamp Delay Word
If enabled each Dolby Digital audio frame will be preceded by a data packet that
reports the current delay through the DP569 encoder. This is used in some
broadcast multiplexers to adjust A/V timing to maintain lipsync. Options are
included to offset the current delay value carried in this data packet, or override
the current value with a user-defined value. This is set to disabled for DVD
applications.