Hold Time 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:
THold is the hold time.
TMain is the source 1 (clock) Mid reference edge time in the configured direction.
T2nd 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.
T Lo- is the Low reference crossing on the falling edge.
N-Periods Duration measurement algorithm
Duration N-Periods is the time required to complete N cycles.
The source can be configured to be treated as either a clock or data waveform. Given a voltage waveform, the N-Period is
calculated as follows:
If the Signal Type is Clock. The N–Period measurement calculates the elapsed time for N consecutive crossings of the mid
reference voltage level in the direction specified.
The application calculates this measurement using the following equation:
Where:
NPClock is the accumulated period for N clock cycles.
TClock is the VRefMid crossing time for the configured edge direction.
Measurement algorithms
450 MSO54, MSO56, MSO58, MSO58LP, MSO64 Help
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