Glossary
2715 User Manual
Glossary–9
Scanning Spectrum Analyzer
See heterodyne spectrum analyzer.
Scanning Velocity
Frequency span divided by sweep time and expressed in hertz per second.
Secondary Marker
The “second” marker displayed only in the Delta Marker mode.
Sensitivity
Measure of a spectrum analyzer’s ability to display minimum level signals,
expressed in volts or decibels. Internal frequency (IF) bandwidth, display
mode, and any other influencing factors must be given.
Shape Factor (Skirt Selectivity)
The ratio of the frequency separation of the two (60 dB/6 dB) down points
on the response curve to the static resolution bandwidth.
Single Sweep
Operating mode in which the sweep generator must be reset for each sweep.
Especially useful for obtaining single examples of a signal spectrum.
Signal Identifier
A means to identify the spectrum of the input signal when spurious
responses are possible.
Span Per Division, Span/Div
Frequency difference represented by each major horizontal division of the
graticule.
Spectrum
The frequency domain representation of a signal wherein it is represented by
displaying its frequency distribution.
Spectrum Analysis
The technique or process of determining the frequency distribution of a
signal.
Spectrum Analyzer
A device for determining the frequency components of a signal.
Spurious Response
A response to a spectrum analyzer wherein the displayed frequency is not
related to the input frequency.
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