Motorola Mts-2000, Руководство по установке

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3 - 1 6 I n s t a l l a t i o n
DCT 2000 Installation Manual
D o l b y D i g i t a l C a b l i n g D i a g r a m s
The DCT2000 can deliver Dolby AC-3 audio to a Dolby Digital stereo receiver using the SPDIF
RCA or optical cable with a TOSLINK connector. Because the SPDIF does not carry audio for
analog channels, use both the baseband L/R audio and the SPDIF connectors when connecting
the DCT2000 to a digital receiver. The optical connector carries Dolby digital for both analog
and digital channels.
PCM audio and AC-3 are the operation modes for the SPDIF connector. PCM audio mode is the
default setting from the factory. Use the Electronic Program Guide (EPG) to select an
alternative operating mode for the DCT2000. If the EPG does not provide a PCM or AC-3 option,
then the SPDIF port will default to PCM audio.
Table 3-1 describes the functionality of the audio ports based on the digital audio mode selected:
Table 3-1
Audio port functionality
Audio Mode (selected in application setup screen)
PCM Dolby Digital
Baseband Audio
Left/Right Analog channels : Passthrough of
transmitted signal (mono, stereo, or
Dolby Surround).
Digital channels
: Mono, stereo, or Dolby
Surround down mix of Dolby Digital as
selected by user. Default is stereo.
Analog channels : Passthrough of
transmitted signal (mono, stereo, or
Dolby Surround).
Digital channels (option L)
: Mono,
stereo, or Dolby Surround down mix
of Dolby Digital as selected by user.
Default is stereo.
Digital Channels (option K) : No
output.
Digital channels (not option K or L) :
Mono, stereo, or Dolby Surround
down mix of Dolby Digital as selected
by user. Default is stereo.
SPDIF – Option K Analog channels : No output.
Digital channels
: Mono, stereo, or Dolby
Surround down mix of Dolby Digital as
selected by user. Default is stereo.
Analog channels : No output.
Digital channels
: Dolby Digital.
Coax/Optical – Option L Analog channels : Passthrough of
transmitted signal (mono, stereo, or
Dolby Surround) in PCM format.
Digital channels
: Mono, stereo, or Dolby
Surround down mix of Dolby Digital as
selected by user. In PCM format.
Analog channels : Passthrough of
transmitted signal (mono, stereo, or
Dolby Surround) in PCM format.
Digital channels
: Dolby Digital.
For normal viewing with the SPDIF connection:
1
Set the DCT2000 to PCM audio mode using the Electronic Program Guide.
2
Adjust the Dolby Digital receiver input audio settings for the DCT2000 to baseband L/R
inputs (refer to stereo receiver instructions for more information). This prevents audio loss
while channel surfing through analog channels.
3
When a digital program has been selected for viewing, set the DCT2000 to AC-3 mode using
the EPG. Set the stereo receiver to digital audio input to experience AC-3 audio.