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W
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S
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UNNER
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ERIES
Gated Parameter Using Excel (Excel Example 2)
This example calculates a paramete
r of a waveform, in a region of interest defined by the leading edges of two
pulses in a separate waveform.
This figure shows the instrument screen:
The traces were made using VBS scripts in functions F1 and F2, based on pseudo-random numbers to provide
noise and varying pulse widths. Randomize Timer: Randomize Timer was used in both scripts to ensure that
successive acquisitions produced different data. Script F1 generates pulses with widths that are multiples of a set
clock period. F2 generates one pulse in the first half of the time window, and one pulse in the second half. B
oth
pulses are constrained to coincide with the clock pulses of F1. F
1 and F2 are used here only as simulations and
are not part of the measurement process, which only uses P1.
The call to Excel is made through Parameter P1.
The next figure shows a p
art of the Excel workbook.
Here we see the gated waveform that has been created in Excel. The Mean parameter during the region of
interest (ROI) is placed in cell H3.
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