•
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-5423 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.
8.
Call niFgen ni5433 Timebase Cal Adjust with the following settings:
•
Measured Frequency
: Frequency of the waveform present on the connected
channel of the PXIe-5423 and measured by the oscilloscope in the previous step
9.
If the
Timebase Cal Complete
output of niFgen ni5433 Timebase Cal Adjust returns
FALSE
, repeat steps 5 through 8 until
Timebase Cal Complete
returns
TRUE
.
Note
Timebase adjustment is only required on one channel of the two-channel
PXIe-5423.
Adjusting DC Voltage
Follow this procedure to adjust the DC voltage of the PXIe-5423.
1.
Connect one end of the SMA (m)-to-BNC (m) cable to a channel of the PXIe-5423.
Connect the other end to the double banana plug-to-BNC (f) adapter, and connect the
double banana plug-to-BNC (f) adapter to the HI and LO connectors of the DMM.
Note
DC voltage adjustment can be performed on either channel of the two-
channel PXIe-5423.
2.
Call niFgen ni5433 ADC Cal Initialize with the following settings:
•
Channel
: Channel of the PXIe-5423 connected to the DMM
3.
Call niFgen ni5433 ADC Cal Configure to obtain the
Approximate Voltage Generated
(V
pk-pk
) output.
4.
Wait 1 second for settling.
5.
Configure the DMM with the following settings:
•
Function
: DC Voltage
•
Resolution
: 7.5 digits
•
Aperture time
: 100 ms
•
Number of averages
: 4
•
Auto zero
: Enabled
•
ADC calibration
: Enabled
•
Range
: Range returned by the
Approximate Voltage Generated
(V
pk-pk
) output of
niFgen ni5433 ADC Cal Configure in step 3
6.
Measure the voltage of the signal using the DMM.
7.
Call niFgen ni5433 ADC Cal Adjust with the following settings:
•
Measured Voltage
: Voltage of the waveform present on the connected channel of
the PXIe-5423 and measured by the DMM in the previous step
PXIe-5423 Calibration Procedure
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© National Instruments Corporation
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