•
Amplitude
:
Amplitude range
listed in the
AC Amplitude Accuracy Verification
table
•
Offset
: 0 V
4.
Wait 1 second for settling.
5.
Measure the AC amplitude (V
RMS
) using the DMM and record this as
AC Amplitude
Measured
.
6.
Convert the recorded
AC Amplitude
Measured
voltage from V
RMS
to V
pk-pk
using the
following formula:
�
pk − pk
= �
RMS
* 2 2
7.
Calculate the AC amplitude error using the following formula:
AC Amplitude Error
(mV) = (
AC Amplitude
Measured
-
Expected Amplitude
) * 10
3
where
Expected Amplitude
is the expected amplitude (V
pk-pk
) listed in the
AC Amplitude
Accuracy Verification
table.
8.
Compare the AC amplitude error to the appropriate limit from the
AC Amplitude
Accuracy Verification
table.
9.
Repeat steps 2 through 8 for each configuration listed in the
AC Amplitude Accuracy
Verification
table.
10. 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 9.
Verifying Passband Flatness Accuracy
Follow this procedure to verify the passband flatness accuracy of the PXIe-5413 by comparing
the flatness sourced by the PXIe-5413 to the value measured by the power sensor.
Refer to the following table as you complete the following steps.
Table 6. Passband Flatness Accuracy Verification
Amplitude Range
(V
pk-pk
)
Frequency (MHz)
As-Found Test
Limit (dB)
As-Left Test Limit
(dB)
1
3.500
0.05
—
—
2
1
±0.40
±0.25
3
20
±0.60
±0.14
PXIe-5413 Calibration Procedure
|
© National Instruments
|
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