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© National Instruments Corporation
AC cutoff frequency response
0.5
0.0
–0.5
–1.0
0
Input range ............................................. ±5 V
AC voltage full-scale range
Minimum ........................................ ±5 V
Typical ............................................ ±5.1 V
Maximum........................................ ±5.2 V
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.
V
common mode
–
where
V
common-mode
NI USB-9234,
V
is the bias voltage of the IEPE sensor,
bias
V
is the full-scale voltage of IEPE sensor
full-scale
1
2
3
4
5
Frequency (Hz)
V
V
+
+
bias
full scale
–
is the common-mode voltage of the
17
NI USB-9234 User Guide and Specifications
6
7
8
9
10
pk
pk
pk
must be 0 to 19
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