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:Timebase Cal Adjust VI with
the following settings:
•
actual frequency generated (Hz)
: The frequency of the sine wave present on
channel 0 of the PXIe-5164
7.
Repeat steps 3 through 6 until the
Timebase cal complete
indicator from the niHsai
Group B External Cal API v1 Host.lvclass:Timebase Cal Adjust VI returns TRUE.
8.
Disable the calibrator output.
Return to the main
task.
Adjusting
50 Ω
Passband Amplitude Flatness and
Bandwidth
Follow this procedure to adjust the 50 Ω passband amplitude flatness and bandwidth of the
PXIe-5164.
1.
Connect splitter output 2 of the power sensor assembly from the Test System
Characterization section to the specified channel of the PXIe-5164.
Note
The power sensor assembly must match the configuration used in the
section, in which the power sensor is connected to
splitter output 1 and the signal generator is connected to the input port of the
power splitter.
The following figure illustrates the hardware setup.
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ni.com
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PXIe-5164 Calibration Procedure