Analog Devices EVAL-ADAQ4003FMCZ, Руководство пользователя

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EVAL-ADAQ4003FMCZ Evaluation Board User Guide UG-1533
Rev. 0 | Page 15 of 31
HISTOGRAM
AC Testing
The ac testing histogram tests the µModule for the code
distribution of the ac input and computes the mean, minimum,
and maximum amplitude and the LSB size of the converter.
Raw data is captured and passed to the PC for statistical
computations. To perform a histogram test, click the
Histogram
tab and click
Single Capture
or
Continuous Capture.
Note that
an ac histogram needs a signal source applied to the J1 and J2
input connectors on the
EV-ADAQ4003PMDZ . Figure 29 shows
the histogram for a 1 kHz sine wave applied to the input of the
EV-ADAQ4003PMDZ.
DC Testing
More commonly, the histogram is used for dc testing where
the user tests the µModule for the code distribution for dc input,
computes the mean and standard deviation, or transition noise,
of the converter, and displays the results. Raw data is captured
and passed to the PC for statistical computations. To perform a
histogram test, click the
Histogram tab and click Single Capture
or Continuous Capture . To test various dc values, apply a source to
the J1 and J2 input connectors on the EV-ADAQ4003PMDZ.
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1
1-
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Figure 29. Histogram Tab, Histogram Captured for Sine Wave