Crestron
C2N-DAP8
Digital Audio Processor
Operations Guide – DOC. 8186
Digital Audio Processor: C2N-DAP8
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57
Surround Sound Decoder Analog Input and Output Signals (continued)
SIGNAL TYPE
(I/O)
FUNCTION
Volume
Volume_FB
I
O
Sets the master volume for all digital output channels.
The volume is adjustable within a range of -80dB to
+12dB. Thus valid values range from -800 (-80dB) to
+120 (+12dB).
Decoder_Src
Decoder_Src_FB
I
O
Controls and reports the source currently used by the
decoder.
Source Decoder
Source
Noise Generator (Special Case)
0
SPDIF
A
1
SPDIF
B
2
Optical
E
3
Optical
F
4
CAT5 Video In 1-2-3-4
5
CAT5 Audio In
6
Audio In #2
7
Audio In #3
8
Audio In #4
9
Audio In #5
10
Audio In #6
11
Enabling any of the Noise generators sets
Decoder_Src to zero, thus the previous source needs
to be manually re-selected after noise generation is
complete.
Selecting any of the analog audio inputs (CAT5
through Audio In #6) will also affect the DAP8 Stereo
Audio Switch setting on slot 06.
High_Dyn_Range,
Low_Dyn_Range
High_Dyn_Range_Fb,
Low_Dyn_Range_FB
I
O
Controls dynamic range compression in Dolby Digital
sources. The control range is 0 to 100% (for
minimum to maximum compression).
For most applications these signals need not be
used, since the DYN_Range inputs described before
offer adequate control of compression ratios.
Sub_Limit
Sub_Limit_FB
I
O
Sets the peak limit, or maximum output level of the
subwoofer. The peak level is adjustable within a
range of -25dB to 0dB. Values more negative than
-24.0dB disable peak limiting (the default setting)
LFE_Trim
LFE_Trim_FB
I
O
Sets the amount of gain to the LFE, or Low
Frequency Effects channel during bass management.
The LFE trim is adjustable within a range of -15dB to
0dB.
Trim_L through
Trim_Sub
Trim_L_FB through
Trim_Sub_FB
I
O
Sets the gain of the indicated channel. The trim is
adjustable within a range of -30dB to +30dB,
although Dolby recommends a range of -12dB to
+12dB. The Master Volume and the trim volume (and
possibly other compensation terms) are added
together to produce the output volume.
Delay_Left through
Delay_Sub
Delay_Left_FB through
Delay_Sub_FB
I
O
Sets the delay, in milliseconds, for the indicated
channel. The delay is adjustable within a range of
0ms to 20ms, although the Dolby recommendations
are 0ms to 5ms for the center channel and 0ms to
15ms for all other channels.
Certain Pro Logic decoding modes add a 10ms delay
that is not displayed or accounted for here.
Global_Bass,
Global_Treble
Global_Bass_FB,
Global_Treble_FB
I
O
Sets the bass and treble settings for all digital output
channels. The bass and treble are adjustable within a
range of -18.0dB to +18.0dB.
(continued on next page)
