Adjusting the PXIe-5413
Follow this procedure to adjust the PXIe-5413 to meet published specifications.
Note
All adjustments must be completed in the same external calibration session.
1.
Call niFgen ni5433 Open Ext Cal Session to obtain an external calibration session.
2.
Complete the
Adjusting Timebase
procedure.
3.
Complete the
Adjusting DC Voltage
procedure.
4.
Complete the
Adjusting Passband Flatness
procedure.
5.
Call niFgen ni5433 Close Ext Cal Session with the following settings:
•
Action
: If the external adjustment procedure completed without any errors, set this
control to Commit to store the new calibration constants, adjustment time,
adjustment date, and adjustment temperature to the onboard memory. If any errors
occurred during the external adjustment procedure, or if you want to abort the
operation, set the control to Abort to discard the new calibration constants without
changing any of the calibration data stored in the onboard memory.
Self-calibrate the PXIe-5413 after completing adjustment and before reverification.
Related Information
Password
on page 5
Calibration Overview
on page 5
Adjusting Timebase
Follow this procedure to adjust the internal timebase reference (TCXO) of the PXIe-5413.
1.
Connect one end of the SMA (m)-to-SMA (m) cable to a channel of the PXIe-5413 and
the other end to a channel of the oscilloscope.
Note
Timebase adjustment can be performed on either channel of the two-
channel PXIe-5413.
2.
Lock the oscilloscope to the precision frequency reference using the PXI Clock.
3.
Configure the oscilloscope with the following settings:
•
Vertical range
: 5 V
pk-pk
•
Sample rate
: 250 MS/s
•
Input impedance
: 50 Ω
•
Minimum number of points
: 1,048,576 samples
4.
Call niFgen ni5433 Timebase Cal Initialize with the following settings:
•
Channel
: Channel of the PXIe-5413 connected to the oscilloscope
5.
Call niFgen ni5433 Timebase Cal Configure.
6.
Wait 1 second for settling.
7.
Measure the frequency of the signal using the oscilloscope and the Extract Single Tone
Information VI.
14
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PXIe-5413 Calibration Procedure