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Span
Last Span
Changes the displayed frequency span to the previous span setting. If it is pressed immediately after
Signal Track is turned off, then the span setting returns to the span that was in effect before Signal Track
was turned on.
If this key is pressed while in a nonzero span, and the previous value of span was 0, it will put the test set
back in Zero Span. And if it is pressed while in zero span, it will set the test set back to its last nonzero
span.
Pressing Last Span places the test set in Center/Span frequency entry mode.
N dB points reports a time difference. N dB points reports a frequency difference.
Key Path SPAN X Scale
Example FREQ:SPAN 0 Hz sets the span to zero, switches to Zero Span
Sending FREQ:SPAN 1 MHz while in Zero Span, switches to Swept span
Notes Setting the Span to 0 Hz will change to Zero Span and setting the span to a
non-zero value will select a swept span
Notes n /a
Dependencies Zero Span key is unavailable (grayed out) if the following is true:
Frequency scale type is LOG (for example, Log Sweep is On)
Couplings Pressing Zero Span key (switching to Zero Span):
Turns off signal track function (span zoom).
Turns off the auto-coupling of RBW and sweep time.
Initial S/W Revision Prior to A.02.00
Key Path SPAN X Scale
Remote Command [:SENSe]:FREQuency:SPAN:PREVious
Example FREQ:SPAN:PREV sets the span to the previous value
Notes n /a
Initial S/W Revision Prior to A.02.00