LeCroy LSA1000, Operator'S Manual

Page: 87 / 115

C – 3
Parameter Measurement
Determining Differential
Time Measurements
Figure C
–2
To avoid these bias effects, the instrument uses cyclic
parameters, including
crms and cmean , that restrict the
calculation to an integer number of cycles.
The LSA1000 enables accurate differential time measurements
between two traces
— for example, propagation, setup and hold
delays ( Fig. C
–3
).
Parameters such as

c2d

require the transition polarity of the
clock and data signals to be specified.
RIGHT CURSOR
LEFT CURSOR
TWO FULL PERIODS: = 2 cycles
first
last
50 %
delay
PERIOD PERIOD
mean, median, rms, sdev
computed on interval periods
width
width width
freq period = 1/
duty width/period =
area, points, data
computed between cursors
TRIGGER
POINT
(Mesial)