Keysight x-series User Manual

3 Spectrum Analyzer Mode
3.2 Swept SA Measurement
Zone Center cannot go so low as to force Zone Left to be <0
Max The maximum Zone Center frequency is the same as the maximum instrument Center Frequency,
which is basically the instrument maximum frequency –5 Hz. See the table under Center Frequency
Annotation As the Center Freq of the Zone Window
Status Bits/OPC
dependencies
Non-overlapped
Zone Span
Allows the span of the zone markers to be changed without changing the center
frequency. The zone markers are vertical lines marking the zone in the upper
window. They determine the frequency range displayed in the lower window. As the
zone markers are moved, the span of the lower window is changed but the lower
window will not be updated to reflect the change unless it is selected as the active
window.
The span limit of the lower window is the same as the span limit of the instrument.
The span for the lower window is not limited to the selected span of the upper
window. However, if the frequency span of the lower window is at all outside of the
span for the upper window, an orange arrow pointing left or right is displayed at the
left or right edge of the top window.
Remote Command
[:SENSe]:FREQuency:ZSPan:SPAN <frequency>
[:SENSe]:FREQuency:ZSPan:SPAN?
Example
:FREQ:ZSP:SPAN 20 MHz
:FREQ:ZSP:SPAN?
Notes Min and Max values depend on Hardware Options
Dependencies Only appears if the Zone Spectrum window is visible
Only appears in the Zone Span View in measurements that support this View. If the command is sent
in other views, generates an error
Couplings Span of lower window changes so that it is always the same as Zone Span, and vice versa
Preset On entry to the Zone Span View, Zone Span is 10% of the span of the upper window. So, if you do
Mode Preset and then immediately switch to Zone Span, Zone Span is 10% of the Span Preset value
listed in the table under Span
State Saved Saved in instrument state
Min 0 Hz
Max Cannot go so high as to force the zone region outside the top window
Annotation As the Span of the Zone Window
Status Bits/OPC
dependencies
Non-overlapped
Spectrum Analyzer Mode User's &Programmer's Reference 299

Keysight x-series Specifications

General

Analysis Bandwidth	Up to 1 GHz (depending on model)
Real-Time Bandwidth	Up to 1 GHz (depending on model)
Form Factor	Benchtop
Connectivity	LAN, USB, GPIB
Resolution Bandwidth	1 Hz to 10 MHz (depending on model)