10 | ni.com | NI PXIe-4464 Calibration Procedure
Complete the following steps to verify the AI gain flatness:
1. Using the equipment described in Table 1, connect the output of the calibrator to the analog
input channel 0 of the device.
2. Configure the calibrator to generate an output with the amplitude and frequency listed in
the -20 dB gain row of Table 7.
3. Create and configure an AI voltage task on the device as shown in Table 8.
4. Start the task.
5. Acquire readings with the NI PXIe-4464.
Table 7. AI Gain Flatness Inputs
Device Gain (dB)
Calibrator Output
Amplitude (V
rms
) Frequency (Hz)
-20 6.3 1000
-10 6.3 1000
0 6.3 1000
10 2.0 1000
20 0.63 1000
30 0.2 1000
Table 8. AI Gain Flatness Verification Configuration
Configuration Value
Physical channel Dev_name/ai0
Gain
*
-20 (dB)
Coupling AC
Terminal configuration Pseudodifferential
Excitation (IEPE) 0 (A)
Acquisition mode Finite number of samples
Rate 204800.0
Samples per channel 102400
*
Refer to Table 3 for the maximum and minimum voltages to specify to ensure the specified gain range
is used on the module.
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