Keysight x-series Instruction Manual

3 Short-Range Comms & IoT Mode
3.7 ACP Measurement
Remote Command
[:SENSe]:ACPower:FREQuency:SPAN <freq>
[:SENSe]:ACPower:FREQuency:SPAN?
Example
:ACP:FREQ:SPAN 10 MHz
:ACP:FREQ:SPAN?
Notes In Bluetooth Mode, the value of Span has to be an odd MHz
Dependencies If the electrical attenuator is enabled, any attempt to set Span such that the Stop Frequency would be
>3.6 GHz results in an error
In instruments with an RF Preselector, such as MXE, you cannot sweep across the band break at 3.6
GHz while the RF Preselector is on in Continuous sweep, as there is a mechanical switch that
bypasses the RF Preselector above 3.6GHz
Couplings Span affects RBW, sweeptime, FFT & Sweep choice (including FFT Width, Phase Noise Optimization
and ADC Dither auto couplings)
–
Any value of Center Frequency or Span that is within the frequency range of the instrument is
allowed when the value is being set through the front panel numeric keypad or the SCPI
command. The other parameter is forced to a different value if needed, to keep the start and stop
frequencies within the instrument’s frequency range
–
When using the knob or the step up/down keys or the UP |DOWN keywords in SCPI, the value
that is being changed, that is, Center Frequency or Span, is limited so that the other parameter is
not forced to a new value
–
In Bluetooth Mode, if Meas Method is FFT, the max value of Span is coupled to the MAX IFBW of
the platform
The Span value is clipped when the carrier settings and/or the offset settings are changed. The value
is changed to satisfy following formula:
Span = (Upper Carrier Freq + (max offset IBW * (1 + alpha)) / 2) - (Lower Carrier Freq - (max offset IBW
* (1 + alpha)) / 2)
This parameter is unavailable when Meas Method is Fast Power. In that case, the span is fixed by the
formula above
Preset Depends on instrument maximum frequency, mode, measurement, and selected input
See "Span Presets" on page 850
State Saved Saved in instrument state
Min/Max Depends on instrument maximum frequency, mode, measurement, and selected input. See "Span
Presets" on page 850
Annotation Span <value> appears on the first line of the annotation in the lower right corner of display
Span Presets
The following table provides the Max Span, for the various frequency options:
Freq Option Max Span
(can't set higher than this)
503 (all but CXA) 3.7 GHz
850 Short Range Comms & IoT Mode User's &Programmer's Reference

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)