NI 9233 Operating Instructions and Specifications 20 ni.com
Common-mode voltage range
(AI– to earth ground)........................ ±2 V max
IEPE excitation current
Minimum.................................... 2.0 mA
Typical........................................ 2.2 mA
IEPE compliance voltage..................19 V max
Use the following equation to make sure that your configuration
meets the IEPE compliance voltage range.
Vcommon-mode + Vbias ±Vfull-scale must be 0 to 19.
where Vcommon-mode is any common-mode voltage applied to
theNI 9233,
Vbias is the bias voltage of the accelerometer, and
Vfull-scale is the full-scale voltage of the accelerometer.