User Manual

Analyzing a wave
form
Amplitude measurements
Measurement Description
Peak-to-peak
The absolute difference between the maximum and minimum amplitude in the entire
waveform or ga
ted region.
Amplitude
The average h
igh value less the average low value measured over the entire waveform
or gated region.
Max
The m ost positive peak voltage. Max is measured over the entire waveform or gated
region.
Min
The m ost negative peak voltage. Min is measured over the entire waveform or gated
region.
High
This value is used as 100% whenever high reference, mid reference, or low reference
values are needed, such as in fall time or rise time measurements. Calculated using
either the min/max or histogram method. The min/max method uses the maximum value
found. The histogram method uses the most c ommon value found above the midpoint.
This value is measured over the entire waveform or gated region.
Low
This value is used as 0 % whenever high reference, mid reference, or low reference
values are needed, such as in fall time or rise time measurements. Calculated using
either the min/max or histogram method. The min/max method uses the minimum value
found. The histogram method uses the most common value found below the m idpoint.
This value is measured over the entire waveform or gated region.
+Over This is measured over the entire waveform or gated region and is expressed as:
Positive Overshoot = (Maximum – High) / Amplitude x 100%.
–Over This is measured over the entire waveform or gated region and is expressed as:
Negative Overshoot = (Low – M in imum) / Amplitude x 100% .
Mean
The ar
ithmetic mean over the entire waveform or gated region.
Cycle
Mean
The ar
ithmetic mean over the firstcycleinthewaveformorthefirst cycle in the gated
region.
RMS The true Root Mean Square voltage over the entire waveform or gated region.
Cycle RMS The true Root Mean Square voltage over the first cycle in the waveform or the first
cycl
e in the gated region.
54 TBS2000 Series User Manual