User Guide

Appendix A Specifications
© National Instruments Corporation A-3 NI 5911 User Manual
Acquisition Characteristics
Accuracy
DC gain accuracy ................................... ±0.05% signal ±0.0001% fs
for all input ranges at 1 MS/s in
flexible resolution mode
DC offset accuracy................................. ±0.1 mV ±0.01% fs
for all input ranges at 1 MS/s in
flexible resolution mode
Input coupling ........................................ DC and AC, software selectable
AC coupling cut-off frequency
(–3 dB) ................................................... 2.3 Hz ±13%
Input impedance..................................... 1 MΩ ±2%
Max measurable input voltage ............... ±10 V (DC + peak AC)
Input protection ...................................... ±42 VDC (DC + peak AC)
Input bias current ................................... ±1 nA, typical at 25 °C
Common-Mode Characteristics
Impedance to chassis ground ................. 10 kΩ
Common-mode rejection ratio ............... CMRR > –70 dB, (F
in
<1kHz)
±0.5 V 148 dBfs/
±0.2 V 140 dBfs/
±0.1 V 134 dBfs/
Input Range Noise Referred to Input
Hz
Hz
Hz