National Instruments PXIe-4340, Процедура калибровки

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8 | ni.com | NI PXIe-4340 Calibration Procedure
4. Configure a position measurement with the PXIe-4340.
a.
Create a DAQmx task.
b. Create and configure the AI LVDT channel according to the values shown in Table 5.
c. Commit the task.
d. Perform DC Offset and AC amplitude measurement(s) with the DMM.
e. Clear the task.
f. Compare the DC Offset measurement to the Limits in Table 6. If the measurement is
between these values, the devices passes the DC Offset test at this Excitation Voltage.
Table 5.
PXIe-4340 AI LVDT Measurement Setup
Configuration Value
Channel Name
Dev1/aix
, where
x
refers to the channel number
Task AI Position LVDT
Sample Mode Finite Number of Samples
Sample Clock Rate 25600
Samples per Channel 25600
Maximum Value 1
Minimum Value -1
Voltage Excitation Wire Mode 4-wire
Voltage Excitation Source Internal
Voltage Excitation Value 7
Voltage Excitation Frequency 10000
Sensitivity Units mV/V/mm
Sensitivity 1
Units Meters
Table 6. DC Offset
Measurement Limits
DC Offset (All Amplitudes) ±10 mV