Keysight x-series User Manual

3 Spectrum Analyzer Mode
3.9 SEM Measurement
>3.6 GHz by pressing the Up-arrow key, fails and results in an advisory message. If the equivalent
SCPI command is sent, this same message is generated as part of a “-221, Settings conflict” warning
Couplings When auto-coupled, the center frequency step size is set to 10% of the span
Preset Auto
ON
State Saved Saved in instrument state
Min/Max –/+ (The maximum frequency of the instrument)
That is, 27 GHz max freq instrument has a CF step range of +/- 27 GHz. Note that this is the maximum
frequency given the current settings of the instrument, so in External Mixing, for example, it is the
maximum frequency of the current mixer band
Status Bits/OPC
dependencies
non-overlapped
Freq Offset
Sets a frequency offset value, to compensate for frequency conversions outside of
the instrument. This value is added to the display readout of the marker frequency,
center frequency, start frequency, stop frequency, and all other absolute frequency
settings in the instrument including frequency count. When a frequency offset is
entered, the value appears below the center of the graticule. To eliminate an offset,
perform a Mode Preset or set the frequency offset to 0Hz.
See "More Information" on page 1616
Remote Command
[:SENSe]:FREQuency:OFFSet <freq>
[:SENSe]:FREQuency:OFFSet?
Example
:FREQ:OFFS 10 MHz
:FREQ:OFFS?
Notes Preset and Max values depend on Hardware Options
Dependencies Appears only in the Spectrum Analyzer Mode
Not available in External Mixing. In this case the control is grayed-out and displays a value of zero.
However, the value of Center Frequency Offset that was set for the RF Input is retained and restored
when you switch back to the RF Input
Preset 0 Hz
State Saved Saved in instrument state
Min -500 GHz
Max 500 GHz
Annotation If Frequency Offset is not zero, “Freq Offset <value>” appears on the upper line of the annotation,
below the graticule, in the center
Status Bits/OPC
dependencies
Non-overlapped
Spectrum Analyzer Mode User's &Programmer's Reference 1615

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)