# What are the definitions of the Oscilloscope's measurements?

**Frequency**

Frequency of the signal as determined by the time between rising or falling edges

**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