Oscilloscope Reference Measurement algorithms
Low = Min
Maximum
Amplitude (voltage) measurement. The maximum voltage. Typically the most positive peak voltage.
Examine all Waveform[ ] samples from Start to End inclusive, and set Max equal to the greatest
magnitude Waveform[ ] value found.
Mean
The arithmetic mean for one waveform. Remember that one waveform is not necessarily equal to one
cycle. For cyclical data you may prefer to use the cycle mean rather than the arithmetic mean.
If Start = End then return the (interpolated) value at
Start.
Otherwise,
Details of the integration algorithm are given later. Integration Algorithm (see page 737)
Mean d Bm
The norma lized mean. If the waveform source is from an optical probe, this can give average optical power.
Mean dBm = 10.0 (log
10
(Mean / 0.001))
Minimum
Amplitude (voltage) measurement. The minimum amplitude. Typically the most negative peak voltage.
Examine all Waveform[ ] samples from Start to End inclusive, and set Min equal to the smallest magnitude
Waveform[ ] value found.
Negative duty cycle
Timing measurement. The ratio of the negative pulse width to the signal period expressed as a percentage.
NegativeWidth is defined in Negative Width,below.
If Period = 0 or undefined then return an error.
DSA/DPO70000D, MSO/DPO/DSA70000C, DPO7000C, and MSO/DPO5000 Series 733
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