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DAC2 Series Instruction Manual Rev C Page 53

udio Precision DAC2 - INTERFACE JITTER TOLERANCE - Distortion vs Jitter

3.456 kHz Test Tone at 0 dBFS, THD+N 22 to 22 kHz BW

DAC2 - JITTER TOLERANCE.at27

ColorSweep Trace Line Style Thick Data Axis Comment

1 1 Green Solid 4 Anlr.THD+N Ratio Left

1 2 Red Solid 4 Dio.Interface Jitter Right

DAC2 THD+N (22-22kHz) (Green Trace) vs. Interface Jitter (Red Trace)

Digital Input = 3.456 kHz Tone at 0 dBFS, Fs = 48 kHz

10m

20m

50m

100m

200m

500m

-110

-100

-90

-80

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-50

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-10

100 90k200 500 1k 2k 5k 10k 20k 50k

Graph Plot 14 - JITTER TOLERANCE

The Audio Engineering Society (AES) has created a jitter tolerance template for testing digital audio

devices. The red curve shows the AES jitter tolerance template. Induced jitter approaches 5 UI at

200 Hz, and is reduced to 0.125 UI above 8 kHz. The green trace shows the THD+N of the DAC2

while being driven with the jitter shown on the red curve. Over the entire range of the AES jitter

tolerance test, the THD+N performance of the DAC2 is unchanged. The DAC2 easily passes the

AES jitter tolerance test without any THD+N performance degradation.

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Benchmark DAC1 HDR Manual de instrucciones Pagina 53