Agilent Technologies Signal Analyzer N9030a - Manual (Page 1147)

6 RLC Swept SA Measurement Front-Panel & SCPI Reference
SPAN X Scale
The span is dependent on the currently selected Input (see the Section “Input/Output”). For
example, when using external mixing, it changes the frequency to the Preset frequency range
specified for the selected external mixing band.
Pressing this key while in zero span puts the analyzer back in swept span.
Key Path SPAN X Scale
Remote Command [:SENSe]:FREQuency:SPAN:FULL
Example FREQ:SPAN:FULL Sets the span to full frequency range of the analyzer
Notes n /a
Couplings Turns off signal tracking (span zoom). It does NOT turn off the markers, nor the current active
function.
Backwards Compatibility
Notes In the past, the Full Span function turned off all markers. In the X-Series this is not the case.
Initial S/W Revision Prior to A.02.00
Zero Span
Changes the displayed frequency span to 0 Hz. The horizontal axis changes to time rather than
frequency. The amplitude displayed is the input signal level at the current center frequency. This
is a time-domain mode that changes several measurement functions and 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 zero span.
You can enter Zero Span in several ways:
•
Press the Zero Span key in Span
•
Set Span=0 Hz
•
Press last Span if the last span was 0
You cannot go to Zero Span by setting start freq = stop freq, or rolling span down with the RPG,
that will limit you to 10 Hz
You can go back to Swept Span by setting Span to a nonzero value or pressing Last Span,
assuming the last span was not also zero span.
Pressing Zero Span places the analyzer in Center/Span frequency entry mode.
The following table summarizes the differences between Zero Span and Swept Spans:
Remote Language Compatibility Measurement Application Reference 1147