Tektronix TLS 216 User Manual page 151

Table 3–3: Measurement Definitions (Cont.)
Name
Frequency
High
Hold
Low
Maximum
Mean
Minimum
Negative Duty Cycle Timing measurement of the first cycle in the waveform or gated region. The ratio of the negative
Negative Overshoot
Negative Width
Peak to Peak
Phase
Period
Positive Duty Cycle
Positive Overshoot
TLS 216 User Manual
Definition
Timing measurement for the first cycle in the waveform or gated region. The reciprocal of the period.
Measured in Hertz (Hz) where 1 Hz = 1 cycle per second.
The value used as 100% whenever High Ref, Mid Ref, and Low Ref values are needed (as in fall
time and rise time measurements). Calculated using either the min/max or the histogram method.
The min/max method uses the maximum value found. The histogram method uses the most
common value found above the mid point. Measured over the entire waveform or gated region.
Timing measurement. The time between the first transition to an illegal state for all waveforms in a
group (except the clock) and the clocking edge of the waveform in the channel specified as the clock.
The clock can be any channel. It does not have to be included in the measured group. Logic levels
are dictated by High Ref and Low Ref.
The value used as 0% whenever High Ref, Mid Ref, and Low Ref values are needed (as in fall time
and rise time measurements). May be calculated using either the min/max or the histogram method.
With the min/max method, it is the minimum value found. With the histogram method, it refers to the
most common value found below the mid point. Measured over the entire waveform or gated region.
Voltage measurement. The maximum amplitude. Typically the most positive peak voltage. Measured
over the entire waveform or gated region.
Voltage measurement. The arithmetic mean over the entire waveform or gated region.
Voltage measurement. The minimum amplitude. Typically the most negative peak voltage. Measured
over the entire waveform or gated region.
pulse width to the signal period expressed as a percentage.
NegativeDutyCycle
Voltage measurement. Measured over the entire waveform or gated region.
NegativeOvershoot
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.
Voltage measurement. The absolute difference between the maximum and minimum amplitude in
the entire waveform or gated region.
Timing measurement. The amount one waveform leads or lags another in time. Expressed in
degrees, where 360 comprise one waveform cycle.
Timing measurement. The time it takes for the first complete signal cycle to happen in the waveform
or gated region. The reciprocal of frequency. Measured in seconds.
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.
PositiveWidth
PositiveDutyCycle
Voltage measurement over the entire waveform or gated region.
Max
PositiveOvershoot
Measuring Waveforms Automatically
NegativeWidth
100%
Period
Low Min
100%
Amplitude
100%
Period
High
100%
Amplitude
3–69