Agilent Technologies N1996A-503 User Reference page 53

Min
Max
Chapter 3
Determined by the min value used by the X Axis Scale.
In Frequency Domain, per default, Start Frequency (starting
point of the Frequency X axis scale) is 100 kHz, so the Marker X
Axis Min value that can be entered is 100 kHz.
The Marker X Axis Min Value that can be used is -35 MHz (it's
the minimum value that the Start Freq can accept)
In Time Domain, per default, the Marker X Axis Min value is 0
s, but a lower a value can be entered if a "negative" Trigger
Delay is used.
Determined by the max value used by the X Axis Scale.
In Frequency Domain, per default, for a 6 GHz Instrument,
Stop Frequency (ending point of the Frequency X axis scale) is
6 GHz, so the Marker X Axis Max value that can be entered is
6 GHz.
The Marker X Max Value that can be used is 3.02 GHz for a
3 GHz Instrument and 6.02 GHz for 6 GHz Instrument (they
are the maximum values that the Stop Freq can accept)
In Time Domain, it is the RBW choice which determines the
sweep time (which defines the X Axis Scale's range). Preset sets
the RBW to 5 MHz, the sweep time used in the span zero is
then 27.307ms. So per default, Marker X Max value is
27.307ms.
But a higher value can be entered if originally in the Frequency
Domain a lower RBW than 5 MHz has been used.
For instance, if after a Preset, the RBW is set to 1 MHz, and
then the zero span is selected, the sweep time would be 102.4
ms. So the Marker X Max value that could be used will be
102.4ms
Meas Off (Spectrum Analyzer) Measurement
Mode
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