Keysight x-series Instruction Manual

6 Input/Output
6.2 Input
Backwards
Compatibility SCPI
[:SENSe]:FEED AREFerence
In the PSA the calibrator was one of the inputs and selected using the AREF parameter to the same
:FEED command that switched the inputs. In the X-Series, it is controlled in a separate menu and
overrides the input selection. For code compatibility, [:SENSe]:FEED AREFerence is provided,
and is aliased to [SENSe]:FEED:AREF REF50, which causes the input to be switched to the
50MHz calibrator. [:SENSe]:FEED RF switches the input back to the RF port and turns the
calibrator OFF, thus providing full compatibility with the PSA calibrator function
Note that after sending this, [:SENSe]:FEED? does not return “AREF” but instead the currently
selected input:
[:SENSe]:FEED IQ | IONLy | QONLy
[:SENSe]:FEED?
The parameters IQ | IONLy | QONLy are supported for backwards compatibility with the
E44406A
[:SENSe]:FEED IQ aliases to [:SENSe]:FEED: IQ:TYPE IQ
[:SENSe]:FEED IONLy aliases to [:SENSe]:FEED:IQ:TYPE IONLy
[:SENSe]:FEED QONLy aliases to [:SENSe]:FEED:IQ:TYPE QONLy
[:SENSe]:FEED? always returns AIQ, whatever type of legacy parameter IQ |
IONLy | QONLy has been used
Backwards
Compatibility
Notes
Most of the settings in the X-Series Input/Output system, including External Gain, Amplitude
Corrections settings and data, etc., are shared by all modes and are not changed by a mode switch.
Furthermore, most variables under the Input/Output menu are not affected by Mode Preset. Both of
these behaviors represent a departure from legacy behavior
In X-Series. Input/Output settings are reset by using Restore Input/Output Defaults. They can also be
reset to their default values by System->Restore System Defaults-> In/Out Config, or by System -
>Restore System Defaults -> All (and corresponding SCPI)
While this matches most use cases better, it does create some code compatibility issues. For
example, Amplitude Corrections are no longer turned off by Mode Preset, but instead by Restore
Input/Output Defaults
Although Input/Output settings are not part of each Mode’s State, they are saved in Save State files,
so that all of the instrument settings can be recalled with Recall, State, as in legacy instruments
Notes In legacy analyzers you choose between the Internal mixer or an External Mixer. In X-Series, the
External Mixer is one of the choices for the Input and is selected using the FEED command
(:SENSe:FEED EXTMixer)
For compatibility, the :INPut:MIXer EXTernal|INTernal legacy command is mapped as
follows:
1.
When :INPut:MIXer EXTernal is received, :SENSe:FEED EMIXer is executed
2.
When :INPut:MIXer INTernal is received, :SENSe:FEED RF is executed
3.
When :INPut:MIXer? is received, the response is INT if any input other than the external
mixer is selected, and EXT if the external mixer is selected
Preset
INT
2027 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)