Teledyne LeCroy LabMaster 10Zi Operators Manual - Manual (Page 123)

Getting Started Manual
922561-00 Rev A
115
Track vs. Trend
Both Track and Trend are tools that can be used to plot measurement data
and observe variations with respect to time. Differences between Track and
Trend are summarized in the following table:
Characteristic Track Trend
Representation Parameter value vs.
time Parameter value vs. event
Behavior Non-cumulative
(resets after every
acquisition).
Unlimited number of
events Cumulative over several
acquisitions up to 1 million
events
Time Correlation to
Other Data Yes No
Monitors an Evolution
in the Frequency
Domain Yes No. Trend points are not evenly
spaced in time and therefore
cannot be used for an FFT.
Monitors the
Evolution of a
Measurement
Parameter over
Several Acquisitions No. Track resets
after every
acquisition. Yes
Ensures No Lost
Measurement Data Yes. Maximum time
period that can be
captured is limited
by acquisition
memory and
sampling rate. No. Since data can be
accumulated over many
acquisitions, and since the
oscilloscope takes time to
calculate measurement values
and to display data before the
trigger is re-armed, data can be
missed.
In general, Track is the tool to use if you want to capture a continuous
stream of data spaced closely together. To understand the change in a
parameter with time, Trend can be used if your data is spaced widely apart
and longer than the dead-time of the oscilloscope between acquisitions.
Think of Trend as a strip chart recorder for your oscilloscope.