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238 Chapter4
Instrument Functions: P - Z
SPAN / X Scale
Instrument Functions: P - Z
Remote Command:
[:SENSe]:FREQuency:SPAN <freq>
[:SENSe]:FREQuency:SPAN?
Example: FREQ:SPAN 2 GHZ
4.6.2 Span Zoom
Turns on signal tracking and activates the span function. Entering a new span value will
then change the span while keeping the marker used for signal tracking centered on the
screen. Pressing
Span Zoom isthesameaspressing:Frequency, Signal Track (On), and Span.
See “Signal Track” on page 168.
Key Path:
SPAN X Scale
State Saved: Saved in Instrument State
Remote Command:
No equivalent SCPI command.
4.6.3 Full Span
Changes the displayed frequency span to show the full frequency range of the analyzer.
When using external mixing, it changes the displayed frequency span to the frequency
range specified for the selected external mixing band.
Key Path:
SPAN X Scale
Remote Command:
[:SENSe]:FREQuency:SPAN:FULL
Example: FREQ:SPAN:FULL
4.6.4 Zero Span
Changes the displayed frequency span to zero Hertz. The horizontal axis changes to time
rather than frequency. The input signal that is at the current center frequency is the
displayed amplitude. This is a special operation mode that changes several measurement
functions/couplings. The instrument behavior is similar to an oscilloscope with a frequency
selective detector installed in front of the oscilloscope. See Application Note 150 for more
information on how to use this mode.
Key Path:
SPAN X Scale