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FUNCTION REFERENCE 5 - 93
- rms (ROOT MEAN SQUARE VOLTAGE)
Measures the rms value within one period, related to the ground level of the
signal. If no full period is present, all input samples are included in the
calculation.
where: j = 1st mesial crossing [first sample if no full period]
k = 3rd mesial crossing [last sample if no full period]
S(n) = nth sample (j<=n<=k)
- min (MINIMUM VOLTAGE)
Measures the minimum voltage level of the signal, including undershoot. It is
calculated over all samples of the displayed signal.
min = min {S(n)}
where: S(n) = nth sample
- max (MAXIMUM VOLTAGE)
Measures the maximum voltage level of the signal, including overshoot. It is
calculated over all samples of the displayed signal.
max = max {S(n)}
where: S(n) = nth sample
- pkpk (PEAK-TO-PEAK VOLTAGE)
Measures the peak-to-peak voltage (the difference between the absolute
minimum voltage and absolute maximum voltage of the signal).
pkpk = max - min
- low (LOW LEVEL)
Measures the low level of the signal. The number of samples for each
amplitude level is counted. A peak in the number of samples at one level
indicates the low level and is referred to 0% level. If no such point is present
(e.g., sine wave), it is equal to the minimum voltage.
- high (HIGH LEVEL)
Measures the high level of the signal. The number of samples at each
amplitude level is counted. A peak in the number of samples at one level
indicates the high level and is referred to the 100% level. If no such point is
present (e.g., sine wave), the high level is equal to the maximum voltage.
rms
1
kj–1+
-------------------
Sn()
2
×=