National Instruments NI USB-9234 - page 17

© National Instruments Corporation 17 NI USB-9234 User Guide and Specifications
AC cutoff frequency response
Input range............................................. ±5 V
AC voltage full-scale range
Minimum........................................ ±5 Vpk
Typical............................................ ±5.1 Vpk
Maximum........................................±5.2 Vpk
Common-mode voltage
(AI– to earth ground)............................. ±2 V max
IEPE excitation current (software-selectable on/off)
Minimum........................................ 2.0 mA
Typical............................................ 2.1 mA
Power-on glitch......................................90 mA for 10 ms
IEPE compliance voltage....................... 19 V max
If you are using an IEPE sensor, use the following equation to make sure
that your configuration meets the IEPE compliance voltage range.
must be 0 to 19
where Vcommon-mode is the common-mode voltage of the
NIU SB-9234,
Vbias is the bias voltage of the IEPE sensor,
Vfull-scale is the full-scale voltage of IEPE sensor
104
0.5
0.0
–0.5
–1.0 321098765
Gain (dB)
Frequency (Hz)
Vcommon mode–Vbias Vfull scale– ++