What are the definitions of the Oscilloscope's measurements?
Written by Paul Cracknell
Updated at July 23rd, 2024
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Frequency
Frequency of the signal as determined by the time between rising or falling edges
Phase
Phase of strongest frequency component with respect to a perfect sine wave
Period
Time between pairs of rising or falling edges
Duty Cycle
Ratio of the time spent above the median to that spent below it
Pulse Width
Time the signal spends above the median
Negative Width
Time the signal spends below the median
Mean
Average value of the signal
RMS
Root-Mean-Square value of the signal
Cycle Mean
Average value of the signal, discounting partial cycles at the beginning and end of the frame
Cycle RMS
Root-Mean-Square value of the signal, discounting partial cycles at the beginning and edge of the frame
Standard Deviation
Mathematical description of the spread of the points in the signal
Peak to Peak
Difference between the highest and lowest voltage in the signal
Amplitude
Difference between the high- and low-level voltage, excluding over- and undershoot
Maximum
Highest voltage in the signal
Minimum
Lowest voltage in the signal
High Level
Highest voltage in the signal, excluding overshoot
Low Level
Lowest voltage in the signal, excluding undershoot
Rise Time
Time taken for the signal to transition from 10% to 90% of the way from minimum to maximum
Fall Time
Time taken for the signal to transition from 90% down to 10% of the way from maximum to minimum
Rise Rate
Rate at which the signal transitions from 10% to 90% of the way from minimum to maximum
Fall Rate
Rate at which the signal transitions from 90% to 10% of the way from maximum to minimum
Overshoot
Distance the signal shoots above the maximum level before settling
Undershoot
Distance the signal shoots below minimum level before settling
Fringe visibility (%)
Measurement of interference