Benchmark DAC2 Series - Page 55

DAC2 Series Instruction Manual Rev C Page 55
A
udio Precision 11/06/12 08:15:12 DAC2 - 11K 12K IMD
DAC2 - IMD 11K 12K.at27
-160
+0
-150
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
r
A
-160
+0
-150
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
-122.154
-128.885
d
B
r
A
0 20k 2k 4k 6k 8k 10k 12k 14k 16k 18k
1.01761k 10.0196k
Hz
dx=9.00196 kHz d
y
=-6.731 dB
Graph Plot 16 - IMD 11k 12K
This plot demonstrates that the DAC2 has very low IMD distortion. The 1 kHz difference frequency
measures -122 dB, and the 10 kHz and 13 kHz products measure about -128 dB. IMD distortion
should be well below audible levels.