Tektronix RSA6100A Series, Help Manual

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General Signal Viewing > Time Overview Time Overview Display
Time Overview Display
The Time Overview display shows the entire acquisition record and shows you how the spectrum time and
analysis time
fi t within the acquisition record. This enables you to see how you can adjust the spectrum
time and analysis time to measure portions of the data.
You can specify the maximum number of trace points in the Time Overview display. You can set the
maximum number of trace points to 1K, 10K, 100K, 1M points or to Never decimate. If the Acquisition
Length includes more than 10,000 sample points (and Max trace points is not set to Never decimate), the
trace is decimated (using the +Peak method, similar to +Peak detection in a Spectrum display) to 10,000
points. This decimated trace is what is used for marker measurements.
The Time Overview window displays the Spectrum Length and Analysis Length. The Spectrum Length
is the period of time within the acquisition record over which the spectrum is calculated. The Analysis
Length is the period of time within the acquisition record over which all other measurements (such as
Amplitude vs. Time) are made. The Spectrum Length and Analysis Length can be locked together so
that the data used to produce the Spectrum display is also used for measurement displays; however, they
do not have to be tied together. They are by default speci
fi ed separately and used to analyze different
parts of the acquisition record.
Elements of the Display
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RSA6100A Series Real-Time Spectrum Analyzers Help