National Instruments NI 447 Series User Manual page 53

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1.0
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.
Spectral Noise Density, referred to input
16,384 points, 51.2 kS/s, 10 averages
1.0 m
100.0 µ
10.0 µ
1.0 µ
100.0 n
10.0 n
6.2 10.0
© National Instruments Corporation
10.0
Sample Rate (kS/s)
Figure A-1. Idle Channel Noise
100.0
Frequency (Hz)
Figure A-2. Input Noise Spectral Density at 128-Times Oversampling
A-3
Appendix A
51.2
100.0
1.0 k
Specifications
1000.0
10.0 k 25.6 k
NI 447X User Manual