Frequency measurement algorithm
Frequency is the reciprocal of the period. Frequency is typically measured in Hertz (Hz) where 1 Hz = 1 cycle per second.
Frequency = 1 / Period
High T
ime measurement algorithm
High Time is the amount of time that a waveform cycle is above the High reference voltage level.
The application calculates the measurement using the following equation:
Where:
T High is the high time.
T Hi- is the High reference crossing on the falling edge.
T Hi+ is the High reference crossing on the rising edge.
Hold T
ime measurement algorithm
Hold Time is the time between the mid reference level crossing of the clock source (Source1) and the next mid reference level crossing of
the data source (Source2). The crossings (edges) may be configured to be rising, falling or either.
The application calculates this measurement using the following equation:
Where:
T Hold is the hold time.
T Main is the source 1 (clock) Mid reference edge time in the configured direction.
T 2nd is the source 2 (data) Mid2 reference edge time in the configured direction.
Low Time measurement algorithm
Low Time is the amount of time that a waveform cycle is below the Low reference voltage level.
The application calculates this measurement using the following equation:
Where:
T Low is the low time.
T Lo+ is the Low reference crossing on the rising edge.
Measurement algorithms
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