System Preferences Commands

SYSTem:PREFerences

| DEFault

| ITEM

     | EEXTrapolate

     | EDEV: DPOLicy

     | GDELay:TWOPoint

     | MCControl

     | MCMethod

     | MCPreset

     | MRU

     | OFFSet

           | RCV

           | SRC

     | PRESet:POWer:STATe

     | PSRTrace

     | RECeivers

           | CERRor

           | OVERload:POWer

      RETRace:POWer

     | RTOF

     | SWITch:DEF

(Write-only) Resets the VNA preferences to their default settings.  Some default settings vary depending on the VNA Model. Learn more about VNA Preferences.

Examples

SYST:PREF:DEF
system:preferences:default

Query Syntax

Not Applicable

Default

Not Applicable

(Read-Write) Set and return whether External Devices remain activated or are de-activated when the VNA is Preset or when a Instrument State is recalled.

This setting remains until changed again using this command, or until the hard drive is changed or reformatted.

Parameters

<bool>

Choose from:

OFF (0)  External devices remain active when the VNA is Preset or when a Instrument State is recalled.

ON (1)  External devices are de-activated (SYST:CONF:EDEV:STAT to OFF) when the VNA is Preset or when a Instrument State is recalled.

Examples

SYST:PREF:ITEM:EDEV:DPOL 1
system:preferences:item:edev:dpolicy OFF

Query Syntax

SYSTem:PREFerences:ITEM:EDEV:DPOLicy?

Return Type

Boolean

Default

ON or 1

(Read-Write) Sets whether a Swept IMD or IMDx calibration can exceed the stop frequency limit of an ECal module. Learn more.

Parameters

<bool>

Choose from:

ON (1)  Allow extrapolation.

OFF (0) Do NOT allow extrapolation.

Examples

SYST:PREF:ITEM:EEXT 1

system:preferences:item:eextrapolate OFF

Query Syntax

SYSTem:PREFerences:ITEM:EEXTrapolate?

Return Type

Boolean

Default

OFF

(Read-Write) Sets the default group delay aperture setting. Learn more about group delay aperture.

Parameters

<bool>

Choose from:

ON (1)  Sets default group delay aperture to 2 points.

OFF (0) Sets default group delay aperture to 11 points.

Examples

SYST:PREF:ITEM:GDELay:TWOPoint 1
system:preferences:item:gdelay:twopoint OFF

Query Syntax

SYSTem:PREFerences:ITEM:GDELay:TWOPoint?

Return Type

Boolean

Default

OFF

(Read-Write) Set and return whether the Coupled Markers setting controls the ON|OFF state of markers that are coupled. Learn more about Coupled Markers. Refer also to CALC:MARK:COUP:STATe ON.

Parameters

<bool>

Choose from:

ON (1) – With Coupled Markers ON, when a marker is turned on, the same-numbered marker on all coupled traces will also be turned on. Likewise, turning off a marker will turn it off on all coupled traces.

OFF (0) – Turning a marker on or off will have no effect on the markers on other traces.

Examples

SYST:PREF:ITEM:MCC 1

system:preferences:item:mccontrol OFF

Query Syntax

SYSTem:PREFerences:ITEM:MCControl?

Return Type

Boolean

Default

OFF (0)

(Read-Write) Set and return whether Coupled Markers is set to Channel or All after Preset. Learn more about Coupled Markers. Refer also to CALC:MARK:COUP:STATe ON and SYST:PREF:ITEM:MCPR ON.

Parameters

<bool>

Choose from:

ON (1) – Marker Coupling Method is set to Channel after Preset.

OFF (0) – Marker Coupling Method is set to ALL after Preset.

Examples

SYST:PREF:ITEM:MCM 1

system:preferences:item:mcmethod OFF

Query Syntax

SYSTem:PREFerences:ITEM:MCMethod?

Return Type

Boolean

Default

OFF (0)

(Read-Write) Set and return whether Coupled Markers is set to ON or OFF after Preset. Learn more about Coupled Markers.

Parameters

<bool>

Choose from:

OFF (0) – Coupled Markers is OFF after Preset.

ON (1) – Coupled Markers is ON after Preset.

Examples

SYST:PREF:ITEM:MCPR 1

system:preferences:item:mcpreset OFF

Query Syntax

SYSTem:PREFerences:ITEM:MCPReset?

Return Type

Boolean

Default

OFF (0)

(Read-Write) Set and return whether to list files for recall on softkeys by most-recently used or alphabetically.

Parameters

<bool>

Choose from:

ON (1) – Recall softkeys show most recently-used files.

OFF (0) – Recall softkeys show alphabetically-ordered files.

Examples

SYST:PREF:ITEM:MRU 1

system:preferences:item:mru OFF

Query Syntax

SYSTem:PREFerences:ITEM:MRU?

Return Type

Boolean

Default

OFF (0)

(Read-Write) Set and return whether to offset the test port receivers by the amount of receiver attenuation. Learn more.

To send this command using the VNA front panel, open the GPIB Command Processor Console, then type either of the following examples at the command prompt. Then type the Query Syntax and press enter to be sure the VNA took the command.

This setting remains until changed again using this command, or until the hard drive is changed or reformatted.

Parameters

<bool>

Choose from:

ON (1) Offset the test port receivers

OFF (0) Do NOT offset the test port receivers

Examples

SYST:PREF:ITEM:OFFS:RCV 1
system:preferences:item:offset:rcv OFF

Query Syntax

SYSTem:PREFerences:ITEM:OFFSet:RCV?

Return Type

Boolean

Default

PNA-L and E836xB: OFF (does NOT offset the display).

VNA: ON (offsets the display).

M9485A: Always return 1

(Read-Write) Set and return whether to offset the reference receiver by the amount of source attenuation. Learn more.

To send this command using the VNA front panel, open the GPIB Command Processor Console, then type either of the following examples at the command prompt. Then type the Query Syntax and press enter to be sure the VNA took the command.

This setting remains until changed again using this command, or until the hard drive is changed or reformatted.

Parameters

<bool>

Choose from:

ON (1) Offset the reference receivers.

OFF (0) Do NOT Offset the reference receivers.

Examples

SYST:PREF:ITEM:OFFS:SRC 1
system:preferences:item:offset:src OFF

Query Syntax

SYSTem:PREFerences:ITEM:OFFSet:SRC?

Return Type

Boolean

Default

All models: ON (offset the display).

(Read-Write) Set and return the Preset Power ON/OFF state.  Learn more.

This setting remains until changed again using this command, or until the hard drive is changed or reformatted.

Parameters

<char>

Choose from:

ON - Instrument Preset always turns RF power ON.

AUTO -  When the current power setting is OFF, leave power OFF after Preset. When the current power setting is ON, turn power ON after Preset.

Examples

SYST:PREF:ITEM:PRE:POW ON
system:preferences:item:preset:power:state auto

Query Syntax

SYSTem:PREFerences:ITEM:PREset:POWer[:STATe]?

Return Type

Character

Default

ON

(Read-Write) At the end of a power sweep, while waiting to trigger the next sweep, maintain source power at either the start power level or at the stop power level.

To send this command using the VNA front panel, open the GPIB Command Processor Console, then type either of the following examples at the command prompt. Then type the Query Syntax and press enter to be sure the VNA took the command.

This setting remains until changed again using this command, or until the hard drive is changed or reformatted.

Parameters

<char>

Choose from:

STARt -  Maintain source power at the start power level.

STOP -  Maintain source power at the stop power level.

Examples

SYST:PREF:ITEM:PSRT STOP
system:preferences:item:psrtrace start

Query Syntax

SYSTem:PREFerences:ITEM:PSRTrace?

Return Type

Character

Default

STARt

(Read-Write) Set and return whether to display receiver overload warnings. Learn more.

Parameters

<bool>

Choose from:

ON (1)  Display overload warnings,

OFF (0) Do NOT display overload warnings.

Examples

SYST:PREF:ITEM:REC:CERR 1

system:preferences:item:receivers:cerror:state OFF

Query Syntax

SYSTem:PREFerences:ITEM:RECeivers:CERRor[:STATe]?

Return Type

Boolean

Default

ON

(Read-Write) Set and return whether to turn source power OFF when a receiver is overloaded. Learn more.

Parameters

<bool>

Choose from:

ON (1)  Turn OFF source power to ALL ports when a receiver is overloaded.

OFF (0)  Power remains ON when a receiver is overloaded.

Examples

SYST:PREF:ITEM:REC:OVER:POW 1

system:preferences:item:receivers:overload:power:state OFF

Query Syntax

SYSTem:PREFerences:ITEM:RECeivers:OVERload:POWer[:STATe]?

Return Type

Boolean

Default

OFF (0)

(Read-Write) For single-band frequency or segment sweeps ONLY, specify whether to turn RF power ON or OFF during a retrace. Learn more about RF power during sweep retrace.

To send this command using the VNA front panel, open the GPIB Command Processor Console, then type either of the following examples at the command prompt. Then type the Query Syntax and press enter to be sure the VNA took the command.

This setting remains until changed using this command, or until the hard drive is changed or reformatted.

Parameters

<char>

Choose from:

AUTO: Power is left ON during retrace of single-band frequency or segment sweeps ONLY.

OFF: Power is turned OFF during retrace of single-band frequency or segment sweeps ONLY.

Examples

SYST:PREF:ITEM:RETR:POW OFF

system:preferences:item:retrace:power auto

Query Syntax

SYSTem:PREFerences:ITEM:RETRace:POWer?

Return Type

Character

Default

AUTO

(Read-Write) Set and return whether to display limit line failures as red trace segments or red data points (dots). Learn more.

Parameters

<bool>

Choose from:

ON (1)  Display failures as red trace segments. (Red Trace On Fail).

OFF (0) Display failures as red data points (dots).

Examples

SYST:PREF:ITEM:RTOF 1
system:preferences:item:rtof OFF

Query Syntax

SYSTem:PREFerences:ITEM:RTOF?

Return Type

Boolean

Default

OFF

(Read-Write) Sets the default setting for the Noise Tuner switch. This is the setting that occurs when a new channel is created. Learn more.

This command will return an error on VNA models with a built-in Noise tuner.

To send this command using the VNA front panel, open the GPIB Command Processor Console, then type either of the following examples at the command prompt. Then type the Query Syntax and press enter to be sure the VNA took the command.

This setting remains until changed using this command, or until the hard drive is changed or reformatted.

Parameters

<string>

Name of the switch to set. Choose from:

• "Port1NoiseTuner"

<int>

Value to set. Choose from:

0  Sets the default (preset) to INTERNAL

1  Sets the default (preset) to EXTERNAL

Examples

SYST:PREF:ITEM:SWIT:DEF "Port1NoiseTuner" 1 'Write

system:preferences:item:switch:def? "Port1NoiseTuner" 'Read

Query Syntax

SYSTem:PREFerences:ITEM:SWITch:DEF? <switch>

Return Type

Integer

Default

1  (External)

16-Mar-2015

Initial Release