| Oscilloscope |
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To find out what oscilloscope measurement facilities are available, see the list below. For information on how to add a measurement facility - to be included at the foot of an oscilloscope trace - go to the Measurement details dialog box.
 | Frequency. The reciprocal of the duration of one cycle.
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| High pulse width. The duration over which the signal is above a certain set threshold.
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| Low pulse width. The duration over which the signal is below a certain set threshold.
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| Duty cycle. The ratio of the time above the threshold to the duration of one complete cycle, expressed as a percentage.
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| Cycle time. The time taken for one complete cycle.
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| DC voltage. The average voltage during one complete cycle.
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| AC voltage. This the RMS sum of the reading minus the DC voltage for one complete cycle.
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| Peak to peak. The difference between the maximum peak and minimum peak.
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| Crest factor. The ratio of the peak voltage to the RMS voltage.
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| Minimum. The minimum value recorded.
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| Maximum. The maximum voltage recorded.
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| Rise time. The time taken to go from 20% of peak amplitude to 80% of peak amplitude.
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| Fall time. The time taken to go from 80% of peak amplitude to 20% of peak amplitude.
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| Rising rate. The slew rate calculated using the two samples either side of the threshold, on a rising edge, expressed as:
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| Rising rate = (Vn - Vn-1) / (Tn - Tn-1)
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Falling rate. The slew rate for the two samples either side of the threshold, on a falling edge, expressed as:
| Falling rate = (Vn - Vn-1) / (Tn - Tn-1)
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Voltage at X cursor. The computer identifies the samples immediately before and after the vertical cursor labelled 'x', then interpolates the voltage at the cursor point.
Voltage at O cursor. The computer identifies the samples immediately before and after the vertical cursor labelled 'o', then interpolates the voltage at the cursor point.
Time at X cursor. The time in the current cycle at which the trace crosses the vertical cursor labelled 'x'.
Time at O cursor. The time in the current cycle at which the trace crosses the vertical cursor labelled 'o'.
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