©
National Instruments Corporation
A-1
A
Specifications
This appendix lists the specifications of the NI 4472. These specifications
are typical at 25 °C unless otherwise noted. The system must be allowed to
warm up for 15 minutes to achieve the rated accuracy.
Note
Be sure to keep the filler panels on all unused slots in your chassis or computer to
maintain forced air cooling.
Analog Input
Channel Characteristics
Number of channels ............................... 8, simultaneously sampled
Input configuration................................. Unbalanced differential
Resolution .............................................. 24 bits, nominal
Type of ADC.......................................... Delta-sigma
Oversampling, for sample rate (
f
s
):
1.0 kS/s
≤
f
s
≤
51.2 kS/s ........... 128
f
s
51.2 kS/s
<
f
s
≤
102.4 kS/s ....... 64
f
s
Sample rates (
f
s
) ..................................... 102.4 kS/s down to 1.0 kS/s
in 190.7 µS/s increments
for
f
s
> 51.2 kS/s or 95.37 µS/s
increments for
f
s
≤
51.2 kS/s
Frequency accuracy................................ ±25 ppm
Input signal range................................... ±10 V
peak
FIFO buffer size ..................................... 1,024 samples
Data transfers ......................................... DMA
