1.
Connect one end of the SMA (m)-to-BNC (m) cable to CH 0 of the PXIe-5413. 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.
2.
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
•
Vertical range
:
DMM range
listed in the
DC Voltage Accuracy Verification
table
3.
Configure the PXIe-5413 with the following settings:
•
Channel
: Channel of the PXIe-5413 connected to the DMM
•
Load impedance
: 1 MΩ
•
Output mode
: Standard Function
•
Waveform type
: User
•
Amplitude
:
Amplitude range
listed in the
DC Voltage Accuracy Verification
table
•
Offset
:
Offset
listed in the
DC Voltage Accuracy Verification
table
•
Waveform data
: Array of zeros
•
Waveform size
: 8,192 samples
4.
Wait 1 second for settling.
5.
Measure the DC voltage (V) using the DMM and record this as
DC Voltage
Measured
.
6.
Calculate the DC voltage error using the following formula:
DC Voltage Error
(mV) = (
DC Voltage
Measured
-
Expected Amplitude
) * 10
3
where
Expected Amplitude
is the expected amplitude (V) listed in the
DC Voltage
Accuracy Verification
table.
7.
Compare the DC voltage error to the appropriate limit from the
DC Voltage Accuracy
Verification
table.
8.
Repeat steps 2 through 7 for each configuration listed in the
DC Voltage Accuracy
Verification
table.
9.
If you are verifying a two-channel PXIe-5413, complete the following steps to verify
CH 1:
a)
Abort waveform generation on the PXIe-5413.
b)
Disconnect the SMA (m)-to-BNC (m) cable from CH 0 and connect it to CH 1 of the
PXIe-5413.
c)
Repeat steps 2 through 8.
Verifying AC Amplitude Accuracy
Follow this procedure to verify the AC amplitude accuracy of the PXIe-5413 by comparing the
amplitude sourced by the PXIe-5413 to the amplitude measured by the DMM.
Refer to the following table as you complete the following steps.
PXIe-5413 Calibration Procedure
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© National Instruments
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