Tektronix TDS5054, Руководство пользователя

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Appendix B: Automatic Measurements Supported
B- 2
TDS5000 Series User Manual
Table B- 1: Supported measurements and their definitions (Cont.)
Name Definition
Minimum Voltage measurement. The minimum amplitude. Typically the most negative peak voltage.
Measured over the entire waveform or gated region.
Negative Duty Cycle Timing measurement of the first cycle in the waveform or gated region. The ratio of the negative
pulse width to the signal period expressed as a percentage.
NegativeDutyCycle
=
NegativeWidth
Period
×
100%
Negative Overshoot Voltage measurement. Measured over the entire waveform or gated region.
NegativeOvershoot
=
Low–Min
Amplitude
×
100%
Negative Width Timing measurement of the first pulse in the waveform or gated region. The distance (time)
between MidRef (default 50%) amplitude points of a negative pulse.
Peak to Peak Voltage measurement. The absolute difference between the maximum and minimum amplitude
in the entire waveform or gated region.
Phase Timing measurement. The amount one waveform leads or lags another in time. Expressed in
degrees, where one waveform cycle is 360
_
.
Period Timing measurement. Time it takes for the first complete signal cycle to happen in the waveform
or gated region. The reciprocal of frequency. Measured in seconds.
Positive Duty Cycle Timing measurement of the first cycle in the waveform or gated region. The ratio of the positive
pulse width to the signal period expressed as a percentage.
PositiveDutyCycle
=
PositiveWidth
Period
×
100%
Positive Overshoot Voltage measurement over the entire waveform or gated region.
PositiveOvershoot
=
Max–High
Amplitude
×
100%
Positive Width Timing measurement of the first pulse in the waveform or gated region. The distance (time)
between MidRef (default 50%) amplitude points of a positive pulse.
Rise time Timing measurement. Time taken for the leading edge of the first pulse in the waveform or
gated region to rise from a Low Ref value (default = 10%) to a High Ref value (default = 90%) of
its final value.
RMS Voltage measurement. The true Root Mean Square voltage over the entire waveform or gated
region.
Histogram Measurements (Optional)
Mean The average of all acquired points within (or on) the histogram box.
Median Half of all acquired points within (or on) the histogram box are less than and half are greater
than this value.
StdDev The standard deviation (Root Mean Square (RMS) deviation) of all acquired points within (or on)
the histogram box.
Hits in Box Displays the number of points in the histogram box or on the box boundary.