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Appendix A Specifications
© National Instruments Corporation A-3 NI 4472 User Manual
Figure A-1. Idle Channel Noise
Figure A-2. Input Noise Spectral Density at 128-Times Oversampling
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1.0 10.0 100.0 1000.0
Noise
(dB
Full-Scale)
Sample Rate (kS/s)
NOTE: The change in the noise level at 51.2 kS/s is due to the reduction of the
oversampling rate of the delta-sigma ADC.
51.2
1.0 m
100.0 µ
10.0 µ
1.0 µ
100.0 n
10.0 n
V/sqr
t(Hz)
6.2
Frequency (Hz)
10.0 100.0 1.0 k 10.0 k 25.6 k
Spectral Noise Density, referred to input
16,384 points, 51.2 kS/s, 10 averages