2.
Call the ni5110 Ext Cal API.lvlib:Compensated Attenuator Cal Initialize VI with the
following settings:
•
channel
: the specified channel
•
input impedance
: 1 MΩ
3.
Call the ni5110 Ext Cal API.lvlib:Compensated Attenuator Configure VI to obtain the
amplitude and frequency of the square waveform to generate, and configure the calibrator
with the following settings:
•
Output: square waveform with symmetrical polarity about ground
•
Amplitude: the specified value
•
Frequency: the specified value
•
Load impedance: 1 MΩ
4.
Enable the calibrator output if it is not already enabled.
5.
Wait 1 second for settling.
6.
Call the ni5110 Ext Cal API.lvlib:Compensated Attenuator Cal Adjust VI with the
following settings:
•
frequency generated (Hz)
: the frequency of the square waveform present on the
specified channel of the PXIe-5113
•
amplitude generated (Vpk-pk)
: the amplitude of the square waveform present on
the specified channel of the PXIe-5113
7.
Repeat steps 3 through 6 until the
compensated attenuator cal complete
indicator of the
ni5110 Ext Cal API.lvlib:Compensated Attenuator Cal Adjust VI returns
TRUE
.
8.
Disable the calibrator output.
Return to the main
task.
Adjusting 1 M
Ω
DC Reference
Follow this procedure to adjust the DC gain and offset of the 1 MΩ DC reference of the
PXIe-5113.
Caution
Avoid touching the connections when generating a high voltage from the
calibrator.
1.
Connect the calibrator test head to the specified channel of the PXIe-5113.
2.
Call the ni5110 Ext Cal API.lvlib:DC Reference Cal Initialize VI with the following
settings:
•
channel
: the specified channel
•
input impedance
: 1 MΩ
3.
Call the ni5110 Ext Cal API.lvlib:DC Reference Cal Configure VI to obtain the DC
voltage to generate, and configure the calibrator with the following settings:
•
Output: the specified DC voltage
•
Load impedance: 1 MΩ
4.
Enable the calibrator output if it is not already enabled.
5.
Wait 1 second for settling.
26
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PXIe-5113 Calibration Procedure