PXIe-4466/4467 Calibration Procedure
© National Instruments Corporation 19
Verification Procedure
Complete the following procedure to verify the IEPE current.
Repeat 2 times, once for each channel.
1. Connect the AI channel under test to the DMM as shown in Figure 2.
Repeat 3 times, once for each IEPE current setting.
2. Set the DMM to the AMPS function and the 10 mA range for the 4 mA
and 10 mA test points, and the 100 mA range for the 20 mA test point.
3. Create and configure an AI Voltage task using the values in Table 10.
Table 10: IEPE Current Verification Configuration
Configuration Value
Physical Channels Dev_name/aix
Gain* -20 (dB)
Coupling AC
Terminal Configuration Pseudodifferential
Excitation (IEPE) Value from Table 9
Acquisition mode Finite number of samples
Rate 250000
Samples Per Channel 125000
*Refer to Table 3 for the maximum and minimum voltages to specify to ensure the specified
gain range is used on the module.
4. Start the task.
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