Teledyne LeCroy WaveJet 300A Series Getting Started Guide - Manual (Page 54)

Getting Started Manual
WJ-A-GS-E Rev A
53

Top-Base -- Measures the difference between upper and lower levels in two-
level signals. Differs from pkpk in that noise, overshoot, undershoot, and ringing
do not affect the measurement.

+Overshoot -- Amount of overshoot following a rising edge specified as
percentage of amplitude.

-Overshoot -- Amount of overshoot following a rising edge specified as
percentage of amplitude.
Standard Horizontal Parameters

Rise Time 10-90% -- Detects the first rise to pass through 50% of the amplitude
(top - base) of the waveform within the measurement section, and then
measures the time of transition from 10% to 90% at that rise.

Rise Time 20-80% -- Detects the first rise to pass through 50% of the amplitude
(top - base) of the waveform within the measurement section, and then
measures the time of transition from 20% to 80% at that rise.

Fall Time 80-20% -- Detects the first fall to pass through 50% of the amplitude
(top - base) of the waveform within the measurement section, and then
measures the time of transition from 80% to 20% at that fall.

Fall Time 90-10% -- Detects the first fall to pass through 50% of the amplitude
(top - base) of the waveform within the measurement section, and then
measures the time of transition from 90% to 10% at that fall.

Frequency -- Period of cyclic signal measured as time between every other pair
of 50% crossings. Starting with first transition after left cursor, the period is
measured for each transition pair. Values then averaged and reciprocal used to
give frequency.

Period -- Period of a cyclic signal measured as time between every other pair of
50% crossings. Starting with first transition after left cursor, period is measured
for each transition pair, with values averaged to give final result.

No. of +Pulses -- An integer number of positive pulses.

No. of -Pulses -- An integer number of negative pulses.

+Pulse Width -- Measures the time from the first rise until the first fall to pass
through 50% of the amplitude (top-base) of the waveform within the
measurement section.

-Pulse Width -- Measures the time from the first fall until the first rise to pass
through 50% of the amplitude (top-base) of the waveform within the
measurement section.

Duty Cycle -- Width as percentage of period.