Tektronix 6 series, Печатная инструкция

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If the Signal Type is Data. The N–Period measurement calculates the elapsed time for N consecutive unit intervals.
The application calculates this measurement using the following equation:
Where:
NPData is the duration for N unit intervals.
TData is the VRefMid crossing time in either direction.
If Tn+NData does not exist for a given n, no measurement is recorded for that position.
Negative Duty Cycle measurement algorithm
Negative Duty Cycle is the ratio of the negative pulse width to the signal period expressed as a percentage.
NegativeWidth is defined in Negative Pulse Width, below.
If Period = 0 or undefined then return an error.
Negative Pulse Width measurement algorithm
Negative Pulse Width is the time (or distance) the signal remains below the mid reference level. It is the distance from a falling
edge to the next rising edge.
Period measurement algorithm
Negative Pulse Width is the time (or distance) the signal remains below the mid reference level. It is the distance from a falling
edge to the next rising edge. Period is measured in horizontal units, typically seconds.
Period = Edge3 - Edge1
Phase measurement algorithm
Phase is the ratio of the Skew between two sources to the Period of the first source. It is the amount of phase shift between
edges of the two waveforms. The phase shift is expressed in degrees of the Source1 waveform cycle, where 360 degrees is one
complete cycle (Period) of Source1. For best results, Source1 and Source2 should be of the same frequency or one waveform
should be a harmonic of the other.
Phase is determined in the following manner for each cycle of the record:
1. The first two adjacent edges of the configured 'from' edge type are found in Source1.
2. The period of Source1 is calculated (see Period above). If the "from" edge is set to either, the half-period of Source1 is
calculated.
3. The first edge in Source2 in the configured 'to' edge direction is found.
4. The Skew from the first Source1 edge to the next Source2 edge is calculated.
Measurement algorithms
MSO54, MSO56, MSO58, MSO58LP, MSO64 Help 451