National Instruments PXIe-5164, Руководство пользователя

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4. Enable the calibrator output if not already enabled.
5. Wait 1 second for settling.
6. Call the niHsai Group B External Cal API v1 Host.lvclass:DC Reference Cal Adjust VI
with the following settings:
•
actual voltage generated (V) : The DC voltage present on the specified channel of
the PXIe-5164
7. Repeat steps 3 through 6 until the DC cal complete indicator from the niHsai Group B
External Cal API v1 Host.lvclass:DC Reference Cal Adjust VI returns TRUE.
8. Disable the calibrator output.
Return to the main Adjusting the PXIe-5164 task.
Adjusting
50 Ω
DC Reference
Follow this procedure to adjust the DC gain and offset of the 50 Ω DC reference of the
PXIe-5164.
1.
Connect the calibrator test head to the specified channel of the PXIe-5164.
2. Call the niHsai Group B External Cal API v1 Host.lvclass:DC Reference Cal Initialize VI
with the following settings:
•
channel : The specified channel
• input impedance : 50 Ω
3. Call the niHsai Group B External Cal API v1 Host.lvclass:DC Reference Cal Configure
VI to obtain the DC voltage to generate and configure the calibrator to output the
specified DC voltage into 50 Ω.
4. Enable the calibrator output if not already enabled.
5. Wait 1 second for settling.
6. Call the niHsai Group B External Cal API v1 Host.lvclass:DC Reference Cal Adjust VI
with the following settings:
•
actual voltage generated (V) : The DC voltage present on the specified channel of
the PXIe-5164
7. Repeat steps 3 through 6 until the DC cal complete indicator from the niHsai Group B
External Cal API v1 Host.lvclass:DC Reference Cal Adjust VI returns TRUE.
8. Disable the calibrator output.
Return to the main Adjusting the PXIe-5164 task.
Adjusting Timebase
Follow this procedure to adjust the internal timebase reference of the PXIe-5164.
1.
Connect the calibrator test head to the specified channel of the PXIe-5164.
2. Call the niHsai Group B External Cal API v1 Host.lvclass:Timebase Cal Initialize VI
with the following settings:
•
channel : The specified channel
3. Call the niHsai Group B External Cal API v1 Host.lvclass:Timebase Cal Configure VI to
obtain the frequency to generate and configure the calibrator to output a 0.9 V
pk-pk
sine
wave at the specified frequency into 50 Ω.
PXIe-5164 Calibration Procedure | © National Instruments | 45