Crestron
C2N-DAP8
Digital Audio Processor
Operations Guide – DOC. 8186
Digital Audio Processor: C2N-DAP8
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43
NOTE:
When present, the delimiter is appended to every string of text in the port
definition (both transmitted and received strings).
Slot 06: DAP8 Analog Audio Switch
The DAP8 Analog Audio Crosspoint is a 6x3 stereo analog audio crosspoint built
into slot 06 of the C2N-DAP8 surround sound processor. The DAP8 Analog Audio
Crosspoint allows each of three stereo outputs to independently select one of six
stereo audio inputs.
The C2N-DAP8 provides one CAT5 connector, labeled
AUDIO
, for stereo audio
input
and
output. That is, one twisted pair carries stereo audio to the unit, and the
other twisted pair carries stereo audio from the unit. The remaining audio inputs are
RCA left/right connectors, labeled
AUDIO IN
2
through
6
.
In addition to the CAT5 audio output, the C2N-DAP8 provides two left/right RCA
outputs, labeled
A
and
B
. Output
A
flows directly from the crosspoint with no
additional processing. Output
B
is passed through a volume/tone controller on slot 07
of the C2N-DAP8. Thus output
B
can be adjusted for volume, bass, and treble. Refer
to “Slot 07: Audio Output B Controls” on page 44.
Analog audio that is sent to output
B
will also be sent to the C2N-DAP8's internal
DSP (digital signal processor) if analog source is selected. The DSP settings are
controlled by the Surround Sound Decoder on slot 08; in some cases, the
programming of the Surround Sound Decoder may affect the Analog Audio Switch
settings. For example, if the program selects a different analog audio source for the
DSP, then that source will also be sent to output
B
(and the feedback will be updated
accordingly).
To switch a source to an output, each <
Src
> analog is initialized to a value that
corresponds to the source, as shown in the following table.
Analog Audio Symbol Source Signal Description (in Decimal Format)
AUDIO SOURCE
VALUE
CAT5 1d
RCA
2d – 6d
No Source
0d
For example, to route the CAT5 audio input to output
B
, use an Analog Initialize
symbol to set the value of <
DSP/OutB_Src
> to 1. (Here, if no digital audio source is
being used, the CAT5 audio will also be sent to the DSP.)
Similarly, to switch RCA input 4 to output
A
, initialize <
OutA_Src
> to 4.
The feedback signals report the currently selected audio source for each output.
Again, in the case of output
B
, the feedback signal will be updated if the DSP selects
a different analog audio source.
