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6.1 ASL SECTION ADJUSTMENT
Preset conditions
1. Set VR401 around the center of the adjustable range.
AInputOutputAdjustment
(MIC)(Pin 74 : test point "ASL1")Adj.pointSpec.
By using the jig(CAN-906,CAN-912),Observe the output atVR401100dBSPL
apply a sine wave of 100dBSPL ALS1 on a audio analyzer314?28mV
voltage directly to the MIC terminal.(Corresponding to analog
(Close up as much as possible.)meter 7Hz).
To connect the Amp unit and the DSP unit, use Jig GGD1153 and GGD1245.
Caution:
1) Before starting measurement, be sure to perform the initial check for the ASL adjustment jig. (The sound pressure
B
level should be 100dBSPL at the sound emission section.)
2) Note that it may take 20 seconds or more to obtain waveforms, in some cases. Do not switch off the jig soon after
starting measurement.
Conditions:
1) This adjustment is sensitive to external shocks or wind. During adjustment, keep away the product and jig from
them.
Audio analyzer
DSP UNITSide ADSP UNITSide B
C
ASL1
VR401
MIC
MIC401
D
Side A
AMP UNIT
CN906CN905
CN901CN902
E
CN902
CN901
+BSPDL+R+N-MU(TX+) TX+ TXD+ TMUT(ML+) (MR+)
WFL+ WFR+RL+RR+ FL+FR+
+B2GNDACC
WFL- WFR-ERL-RR-FL-FR-(SPD) L-R-ASGDMUTE(TX-)TX- TXD- (MUTE) (ML-) (MR-)
13.2V13.2V0V
13.2V
F
13.2V
+
DC Regulated
-
Power Supply
32
GM-9127ZT/EW
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ACEC
PIONEER
