IEPE Analog Input Module Operating Instructions and Specifications

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.
V
common-mode
+ V
bias
±V
full-scale
must be 0 to 19.
where V
common-mode
is any common-mode voltage applied to
the NI 9233,
V
bias
is the bias voltage of the accelerometer, and
V
full-scale
is the full-scale voltage of the accelerometer.