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National Instruments Corporation A-1 PCI-4451/4452 User Manual
A
Specifications
This appendix lists the specifications of the PCI-4451/4452. 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 cover on your computer to maintain forced air cooling.
Analog Input
Channel Characteristics
Number of channels...............................2 (PCI-4451) or 4 (PCI-4452),
simultaneously sampled
Input configuration.................................true differential
Resolution .............................................. 16 bits
Type of ADC.......................................... Delta-sigma, 128-times
oversampling
Sample rates........................................... 5 kS/s to 204.8 kS/s in increments
of 190.735 µS/s
Frequency accuracy................................±100 ppm
Input signal ranges ................................. software-selectable
Gain
Full-Scale Range (Peak)Linear Log
0.1
−20 dB
±42.4 V
0.316
−10 dB
±31.6 V
1 0 dB ±10.0
3.16 +10 dB ±3.16 V
10 +20 dB ±1.00 V
User.book Page 1 Tuesday, April 14, 1998 10:20 AM