NI 9234 Calibration Procedure
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© National Instruments
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11
IEPE Current Verification
Complete the following procedure to determine the As-Found status of the NI 9234.
1.
Connect the NI 9234 to the DMM as shown in Figure 5.
Figure 5.
IEPE Current Verification Connections to the NI 9234
2.
Configure the DMM for a DC current measurement in the lowest appropriate range to
measure 2 mA.
3.
Measure IEPE Source short circuit current.
a.
Create an AI voltage task on the NI 9234 according to Table 14.
b.
Configure the AI voltage task timing according to Table 15.
c.
Start the task.
d.
Record the DMM measurement.
e.
Clear the task.
4.
Compare the DMM measurement to the minimum current limit of 2.0 mA.
5.
Repeat steps 1 through 4 for each channel.
If the IEPE Current verification procedure determines that the NI 9234 is outside of the limits,
refer to
Worldwide Support and Services
for assistance in returning the device to NI.
Table 14.
NI 9234 Configuration for IEPE Current Verification
Min (V)
Max (V)
Scaled
Units
Channel
Configuration
IEPE Excitation
-5
5
Volts
AC Coupled
Enabled
Table 15.
NI 9234 Timing Configuration
Sample Mode
Rate (kHz)
Continuous Samples
51.2
DMM
NI 92
3
4
+
AI
x
HI
LO
–
Summary of Contents for NI 9234
Page 1: ...NI 9234...