4 Input/Output Functions
Input/Output
Input/Output
The Input/Output features are common across multiple Modes and Measurements. These common
features are described in this section. See the Measurement description for information on features that
are unique.
The Input/Output key accesses the keys that control the Input/Output parameters of the instrument. In
general, these are functions associated with external connections to the analyzer, either to the inputs or
the outputs. Since these connections tend to be fairly stable within a given setup, in general, the
input/output settings do not change when you Preset the analyzer.
Other functions related to the input/output connections, but which tend to change on a measurement by
measurement basis, can be found under the Trigger and AMPTD Y Scale keys. In addition, some of the
digital I/O bus configurations can be found under the System key.
The functions in the Input/Output menu are "global" (common) to all Modes (applications). But individual
Input/Output functions only appear in a Mode if they apply to that Mode. Functions that apply to a Mode
but not to all measurements in the Mode may be grayed-out in some measurements.
"Input/Output variables - Preset behavior" on page 151
The Input Port selection is the first menu under the Input/Output key:
Key Path
Front-panel key
Remote Command
[:SENSe]:FEED RF|AIQ|EMIXer
[:SENSe]:FEED?
Example :FEED RF
:FEED?
Couplings The [:SENSe]:FEED RF command turns the calibrator OFF
Preset This setting is unaffected by a Preset or power cycle. It survives a Mode Preset and mode changes.
It is set to RF on a "Restore Input/Output Defaults" or "Restore System Defaults->All"
State Saved Saved in instrument state
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 the [:SENSe]:FEED AREFerence command is
provided, and is aliased to [SENSe]:FEED:AREF REF50, which causes the input to be switched to the
50MHz calibrator. The [:SENSe]:FEED RF command 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, the query [:SENSe]:FEED? will NOT return “AREF” but instead the
currently selected input.
Backwards
Compatibility SCPI
[: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
150 EMI Receiver Mode Reference
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