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3.14.3 RS distortion:
3.14.4 RS signal:
3.15
Test signal loopback via SPDIF receiver -- LS, RS outputs to SPDIF input
Test the SPDIF digital receiver function of the codec.
Connect the LS output (J8 Pin 12) and the RS output (J8 Pin 13) to the L,R inputs of the
SPDIF signal generator.
Connect the output of the SPDIF signal generator (via 75W cable) to the SPDIF input (J5
Pin 4).
Issue the commands:
tn 0, 0, 0, 0, 0, 0, 0, 0, 0
sk 51, af, ff
tn 5, 3, f6, 0, 0, 4, f6, 0, 0
to put the PCB the PCB into digital receiver mode. Expect the response within 700 ms:
>
Issue the command
dp 20,0,2,0,12
Expect the response:
DSPkexxxxxxxx
>
Parse the output text string "xxxxxxxx" as described in section 3.10.
13.15.1 SPDIF L distortion:
13.15.2 SPDIF L signal:
13.15.3 SPDIF R distortion:
13.15.4 SPDIF R signal:
3.16
Mute Outputs
Issue the command:
sk 31,3F,FF
to un-mute the mute output signals. Expect the response within 200ms:
>
Measure 5V at the three mute outputs (J8 Pins 15, 16, 17)
3.16.1 L,R mute
3.16.2 C mute
3.16.3 LS,RS mute
Framingham, MA 01701-9168
-45 dB (max.)
-4 dB (min.)
-45dB (max.)
-4dB (min.)
-45dB (max.)
-4dB (min.) 0 dB (max.)
5V ± 10%
5V ± 10%
5V ± 10%
SIZE
FSCM
CLASS
A
32108
0dB (max.)
0 dB (max.)
DWG NO.
TS
264695
SHEET
REV.
48
00
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