Sound-performance-lab MMC2 Manuel d'utilisateur Page 14

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Vue de la page 13
14
Measurements
A
udio Precision 09/20/05 12:12:45 THD+N vs AMPLITUDE
THD+N VS AMPL 2CH.at2c
Cyan : only on
Green : LF-band
Yellow : LMF-band
Red : MF-band
Magenta : HMF-band
Blue : HF-band
-120
+0
-100
-80
-60
-40
-20
d
B
-40 +30-30 -20 -10 +0 +10 +20
dBu
MMC 2 CHANNEL 1-8 Direct,Pre,Insert,Return to Monitor Out
A
udio Precision 09/20/05 15:06:51 INPUT/OUTPUT PHASE vs
FREQUENCY
SPL IN-OUT PHASE.at2c
Measures phase difference between Input to DUT and Output from DUT.
Optimize to see the entire range.
-15
+30
-10
-5
+0
+5
+10
+15
+20
+25
d
e
g
20 100k50 100 200 500 1k 2k 5k 10k 20k 50k
Hz
MMC2 Input to REC Out Channel 1-8
A
udio Precision 09/20/05 15:10:44 INPUT/OUTPUT PHASE vs
FREQUENCY
SPL IN-OUT PHASE.at2c
Measures phase difference between Input to DUT and Output from DUT.
Optimize to see the entire range.
-15
+30
-10
-5
+0
+5
+10
+15
+20
+25
d
e
g
20 100k50 100 200 500 1k 2k 5k 10k 20k 50k
Hz
MMC2 Input to REC Out Channel 1-2 4 X L/R
A
udio Precision 09/20/05 14:40:05 INPUT/OUTPUT PHASE vs
FREQUENCY
SPL IN-OUT PHASE.at2c
Measures phase difference between Input to DUT and Output from DUT.
Optimize to see the entire range.
-50
+40
-40
-30
-20
-10
+0
+10
+20
+30
d
e
g
20 100k50 100 200 500 1k 2k 5k 10k 20k 50k
Hz
MMC2 Input to Monitor Out Channel 1-8
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