Specifications - National Instruments NI PXI-7831R User Manual

Specifications

Analog Input
© National Instruments Corporation
This appendix lists the specifications of the NI PXI-7831R. These
specifications are typical at 25 °C unless otherwise noted.
Input Characteristics
Number of channels ............................... 8
Input modes............................................ DIFF, RSE, NRSE
Type of ADC.......................................... Successive approximation
Resolution .............................................. 16 bits, 1 in 65,536
Conversion time ..................................... 4
Maximum sampling rate ........................ 200 kS/s (per channel)
Input impedance
Powered on ..................................... 10 GΩ in parallel with 100 pF
Powered off..................................... 4 kΩ min
Overload.......................................... 4 kΩ min
Input signal range................................... ±10 V
Input bias current ................................... ±2 nA
Input offset current................................. ±1 nA
Input coupling ........................................ DC
Maximum working voltage
(signal + common mode) ....................... Inputs should remain
(software-selectable; selection
applies to all 8 channels)
µ
s
within ±12 V of ground
A-1
A
NI PXI-7831R User Manual