VectorStar™ MS4640A SeriesMicrowave Vector Network Analyzer : SCPI Commands : :SYSTem Subsystem
 
:SYSTem Subsystem
The :SYSTEM subsystem commands configure and control various system-level instrument settings.
• :SYSTem:AUTOcal commands set the AutoCal Standard switch position.
• :SYSTem:COMMunicate commands are used to configure and control network communications for GPIB, TCP/IP, and USB networks.
• :SYSTem:DUT:PROTection command is used to toggle on and off the DUT protection state.
• :SYSTem:ERRor commands are used to query and clear the contents of the Error Queue.
• :SYSTem:EXTernal commands are used to query the status of bias tees, 4-Port test sets, and instrument model number.
• :SYSTem:HOLD command is used to RF hold status.
• :SYSTem:IFCalibration commands set the system IF calibration.
• :SYSTem:POFF command turns off the VNA.
• :SYSTem:POINt sets the maximum number of measurement points, and re-boots the instrument is required.
• :SYSTem:PORT returns the number of ports on the instrument.
• :SYSTem:PORT{1-4} commands set the attenuation for reference and test ports.
• :SYSTem:POWerup commands set the instrument power-up options and if required, set the power-up configuration file.
• :SYSTem:PRESet commands configure the instrument preset/reset configuration, and if required, set the preset/reset configuration file.
• :SYSTem:RETRace:RF command toggles the RF trace function on and off. The off state supports analysis of devices with AGC circuits.
 
:SYSTem:AUTocal:SWITch <char1>
:SYSTem:AUTocal:SWITch?
Description
The command sets the AutoCal Standard switch position. The following switch positions are available where P1 = Test Port 1 and P2 = Test Port 2:
• SHSHort = P1 Short, P2 Short
• OPSHort = P1 Open, P2 Short
• SHOPen = P1 Short, P2 Open
• LD1SHort = P1 Load1, P2 Short
• SHLD1 = P1 Short, P2 Load1
• LD2SHort = P1 Load2, P2 Short
• SHLD2 = P1 Short, P2 Load 2
• LD3SHort = P1 Load 3, P2 Short
• SHLD3 = P1 Short, P2 Load 3
• THRu1 = P1 and P1 Through using Thru 1
• THRu2 = P1 and P2 Through using Thru 2
• THRu3 = P1 and P2 Through using Thru 3
• THRu4 = P1 and P2 Through using Thru 4
• OPENlight = Using Lightning 36581/36582 AutoCal, P1 Open and P2 Open
• SHORtlight = Using Lightning 36581/36582 AutoCal, P1 Short and P2 Short
• LOADlight = Using Lightning 36581/36582 AutoCal, P1 Load and P2 Short
• THRulight = Using Lighting 36581/36582 AutoCal, P1 and P2 Thru
• ASSURancelight = Using Lightning 36581/36582 AutoCal, Internal Assurance Standard
Outputs the AutoCal Standard switch position
Cmd Parameters
<char1>: SHSHort | OPSHort | SHOPen | LD1SHort | SHLD1 | LD2SHort | SHLD2 | LD3SHort | SHLD3 | THRu1 | THRu2 | THRu3 | THRu4 | OPENlight | SHORtlight | LOADlight | THRulight | ASSURancelight
Query Parameters
<char1>: SHSH | OPSH | SHOP | LD1SH | SHLD1 | LD2SH | SHLD2 | LD3SH | SHLD3 | THR1 | THR2 | THR3 | THR4 | OPEN | SHOR | LOAD | THR | ASSUR
Range
NA
Default Value
NA
Syntax Example
:SYST:AUT:SWIT SHSHort
:SYST:AUT:SWIT?
SHSH
 
:SYSTem:COMMunicate:GPIB:ADDRess <NRf>
:SYSTem:COMMunicate:GPIB:ADDRess?
Description
Sets the GPIB address of the instrument’s GPIB remote interface. Outputs the GPIB address of the instrument’s GPIB remote interface.
Cmd Parameters
<NRf> The input parameter is a unitless number.
Query Parameters
<NR1> The output parameter is an integer.
Range
0 to 30
Default Value
6
Syntax Example
:SYST:COMM:GPIB:ADDR 7
:SYST:COMM:GPIB:ADDR?
 
:SYSTem:COMMunicate:GPIB:EXTernal:TSET:ADDRess <NRf>
:SYSTem:COMMunicate:GPIB:EXTernal:TSET:ADDRess?
Description
Sets the GPIB address of the four port external test set. Outputs the GPIB address of the four port external test set.
Cmd Parameters
<NRf> The input parameter is a unitless number.
Query Parameters
<NR1> The output parameter is an integer.
Range
1 to 30
Default
16
Syntax Example
:SYST:COMM:GPIB:EXT:TSET:ADDR 16
:SYST:COMM:GPIB:EXT:TSET:ADDR?
 
:SYSTem:COMMunicate:GPIB:FCOUNter:ADDRess <NRf>
:SYSTem:COMMunicate:GPIB:FCOUNter:ADDRess?
Description
Sets the GPIB address of the attached frequency counter. Outputs the GPIB address of the attached frequency counter.
Cmd Parameters
<NRf> The input parameter is a unitless number.
Query Parameters
<NR1> The output parameter is an integer.
Range
0 to 30
Default Value
7
Syntax Example
:SYST:COMM:GPIB:FCOUN:ADDR 9
:SYST:COMM:GPIB:FCOUN:ADDR?
 
:SYSTem:COMMunicate:GPIB:PMETer:ADDRess <NRf>
:SYSTem:COMMunicate:GPIB:PMETer:ADDRess?
Description
Sets the GPIB address of the attached power meter. Outputs the GPIB address of the attached power meter.
Cmd Parameters
<NRf> The input parameter is a unitless number.
Query Parameters
<NR1> The output parameter is an integer.
Range
0 to 30
Default Value
13
Syntax Example
:SYST:COMM:GPIB:PMET:ADDR 6
:SYSTem:COMMunicate:GPIB:PMETer:ADDR?
 
:SYSTem:COMMunicate:TCPIP:ADDRess?
Description
Query only. Outputs the IP address of the Ethernet interface. The setting cannot be changed by the user.
Query Parameters
<char1> The output parameter can be any combination of numbers and letters.
Range
0.0.0.0 to 255.255.255.255
Default Value
Varies with installation.
Syntax Example
:SYST:COMM:TCPIP:ADDR?
 
:SYSTem:COMMunicate:TCPIP:GATE?
Description
Query only. Outputs the default Gateway of the Ethernet interface. The setting cannot be changed by the user.
Query Parameters
<char1> The output parameter can be any combination of numbers and letters.
Range
0.0.0.0 to 255.255.255.255
Default Value
Varies with installation.
Syntax Example
:SYST:COMM:TCPIP:GATE?
 
:SYSTem:COMMunicate:TCPIP:HDW?
Description
Query only. Outputs the MAC hardware address of the Ethernet interface. The setting cannot be changed by the user.
Query Parameters
<char1> The output parameter can be any combination of numbers and letters.
Range
NA
Default Value
Varies with individual instrument.
Syntax Example
:SYST:COMM:TCPIP:HDW?
 
:SYSTem:COMMunicate:TCPIP:MASK?
Description
Query only. Outputs the instrument TCP/IP port address. The setting cannot be changed by the user.
Query Parameters
<NR1> The output parameter is an integer.
Range
0.0.0.0 to 255.255.255.255
Default Value
Varies with installation.
Syntax Example
:SYST:COMM:TCPIP:MASK?
 
:SYSTem:COMMunicate:TCPIP:PORT <NRf>
:SYSTem:COMMunicate:TCPIP:PORT?
Description
Enters the instrument TCP/IP port address. This value is user definable. The recommended TCP/IP address should be greater than or equal to 5001. Outputs the instrument TCP/IP port address.
Cmd Parameters
<NRf> The input parameter is a unitless number.
Query Parameters
<NR1> The output parameter is an integer.
Range
MPNI
Default Value
5001
Syntax Example
:SYST:COMM:TCPIP:PORT 5001
:SYST:COMM:TCPIP:PORT?
 
:SYSTem:COMMunicate:USB:ADDRess?
Description
Query only. Outputs the address of the USB interface. The setting cannot be changed by the user.
Query Parameters
<char1> The output parameter can be any combination of numbers and letters. The default values of "0B5B" and "FFD0" are fixed. The unit serial number, output as a Base 10 integer, varies with each instrument.
Range
NA
Default Value
NA
Syntax Example
:SYST:COMM:USB:ADDR?
 
:SYSTem:DUT:PROTection[:STATe] <char1>
:SYSTem:DUT:PROTection[:STATe]?
Description
Sets the DUT Protection on/off state. Outputs the DUT Protection on/off state.
Cmd Parameters
<char1> 1 | 0 | ON | OFF
Query Parameters
<char1> 1 | 0
Syntax Example
:SYST:DUT:PROT
:SYST:DUT:PROT?
 
:SYSTem:ERRor:CLEar
Description
Clears the contents of the error queue. No query.
Cmd Parameters
NA
Range
NA
Default Value
NA
Syntax Example
:SYST:ERR:CLE
 
:SYSTem:ERRor:COUNt?
Description
Query only. Outputs the number of errors in the error queue.
Query Parameters
<NR1> The output parameter is an integer.
Range
0 to 100
Default Value
0
Syntax Example
:SYST:ERR:COUN?
 
:SYSTem:ERRor:QUEue?
Description
Query only. Outputs the contents of the error queue.
Query Parameters
<block> See definition of <block> or <arbitrary block>.
Range
NA
Default Value
NA
Syntax Example
:SYST:ERR:QUE?
 
:SYSTem:ERRor[:NEXt]?
Description
Query only. Removes and outputs the oldest error in the error queue.
Query Parameters
<ASCII> See definition of <ASCII> or <Arbitrary ASCII>.
Range
NA
Default Value
No Error
Syntax Example
:SYST:ERR?
 
:SYSTem:EXTernal:TSET:FPORt:BIAS:TEES?
Description
Query only. The query outputs the existence of bias tees on the 4-Port Test Set where:
• No Bias Tees are installed = 0
• Bias Tees are installed = 1
Query Parameters
<char1> 1 | 0
Range
NA
Default
NA
Syntax Example
:SYST:EXT:TSET:FPOR:BIAS:TEES?
 
:SYSTem:EXTernal:TSET:FPORt:EXISt?
Description
Query only. Outputs the 4-Port Test Set existence information where:
• MN4690B Series 4-Port Test Set does not exist = 0
• MN4690B Series 4-Port Test Set exists = 1
Query Parameters
<char1> 1 | 0
Range
NA
Default
NA
Syntax Example
:SYST:EXT:TSET:FPOR:EXIS?
 
:SYSTem:EXTernal:TSET:FPORt:FREQuency:MAXimum?
Description
Query only. Outputs the MN4690B Series 4-Port Test Set maximum frequency value:
• MN4694B Series 4-Port Test Set = 40 GHz
• MN4697B Series 4-Port Test Set = 70 GHz
Query Parameters
<NR3> The output parameter is in Hertz.
Range
NA
Default
NA
Syntax Example
:SYST:EXT:TSET:FPOR:FREQ:MAX?
 
:SYSTem:EXTernal:TSET:FPORt:FREQuency:MINimum?
Description
Query only. Outputs the 4-Port Test Set minimum frequency value.
Query Parameters
<NR3> The output parameter is in Hertz.
Range
NA
Default
NA
Syntax Example
:SYST:EXT:TSET:FPOR:FREQ:MIN?
 
:SYSTem:EXTernal:TSET:FPORt:MODel?
Description
Query only. Outputs the model number of the 4-Port VNA instrument.
Query Parameters
<char1> The output parameter can be any combination of numbers and letters.
Range
NA
Default
NA
Syntax Example
:SYST:EXT:TSET:FPOR:MOD?
 
:SYSTem:EXTernal:TSET:FPORt:REVision?
Description
Query only. Outputs the 4-Port Test Set revision number.
Query Parameters
<char1> The output parameter can be any combination of numbers and letters.
Range
NA
Default
NA
Syntax Example
:SYST:EXT:TSET:FPOR:REV?
 
:SYSTem:EXTernal:TSET:FPORt:VERSion?
Description
Query only. Outputs the 4-Port Test Set version number.
Query Parameters
<char1> The output parameter can be any combination of numbers and letters.
Range
NA
Default
NA
Syntax Example
:SYST:EXT:TSET:FPOR:VERS?
 
:SYSTem:HOLD:BIAS[:STATe] <char1>
:SYSTem:HOLD:BIAS[:STATe]?
Description
Sets the Bias Tee on/off state in Hold. Outputs the Bias Tee on/off state in Hold
Cmd Parameters
<char1>: 1 | 0 | ON | OFF
Query Parameters
<char1>: 1 | 0
Range
NA
Default Value
NA
Syntax Example
:SYST:HOLD:BIAS ON
:SYST:HOLD:BIAS?
1
 
:SYSTem:HOLD:POWer <NRf>
:SYSTem:HOLD:POWer?
Description
The command sets the power sweep power level to use in Hold. The query outputs the power sweep power level to use in Hold.
Cmd Parameters
<NRf>: The parameter is in dBm.
Query Parameters
NA
Query Output
<NR3> The parameter is in dBm.
Range
NA
Default Value
NA
Syntax Example
:SYST:HOLD:POW <NRf>
:SYST:HOLD:POW?
 
:SYSTem:HOLD:RF[:STATe] <char1>
:SYSTem:HOLD:RF[:STATe]?
Description
Sets the RF on/off state in Hold. Outputs the RF on/off state in Hold
Cmd Parameters
<char1>: 1 | 0 | ON | OFF
Query Parameters
<char1>: 1 | 0
Range
NA
Default Value
NA
Syntax Example
:SYST:HOLD:RF ON
:SYST:HOLD:RF?
1
 
:SYSTem:IFCalibration:AUTomatic[:STATe] <char1>
:SYSTem:IFCalibration:AUTomatic[:STATe]?
Description
Turns on/off the automatic occurance of the IF calibration. Outputs the on/off state of the automatic occurance of the IF calibration
Cmd Parameters
<char1>: 1 | 0 | ON | OFF
Query Parameters
<char1>: 1 | 0
Syntax Example
:SYST:IFC:AUT ON
:SYST:IFC:AUT?
1
 
:SYSTem:IFCalibration:TRIGger
Description
Triggers an IF calibration. No query.
Cmd Parameters
NA
Syntax Example
:SYST:IFC:TRIG
 
:SYSTem:POFF
Description
The command turns off the VNA. No query.
Cmd Parameters
NA
Query Parameters:
NA
Range
NA
Default Value
NA
Syntax Example
:SYST:POFF
 
:SYSTem:POINt:MAXimum <char1>
:SYSTem:POINt:MAXimum?
Description
The command sets the maximum number of points the instrument can measure in a sweep. After changing the maximum number of points setting, an instrument reboot is required. After the command is issued and the maximum number of points changed, the instrument automatically reboots and then returns to its preset state.
VectorStar VNA Instruments in 100,000 Point Mode
If the instrument is set to 100,000 point mode:
• It will only support 1 channel and 16 traces.
• The buttons on the CHANNEL menu are not available.
• The CHANNEL drop-down menu on the Menu Bar is limited to non-channel commands.
VectorStar VNA Instruments in 25,000 Point Mode
If the instrument is in 25,000 point mode:
• It will support up to 16 channels, each with up to 16 traces.
• The CHANNEL menu buttons are available.
• The CHANNEL drop-down menu on the MENU BAR includes channel commands.
If the command requests the same number of points as the current instrument mode, no reboot is initiated.
*RST and Point Mode
The *RST command does not reset the instrument maximum point mode. For Syntax Example, when the instrument is in 100,000 point mode, the *RST command does not reset the number of points to 25,000.
Query Output
The query outputs current setting of the maximum number of points available in the instrument. If 25,000 is set, 25000 is returned. If 100,000 is set, 100000 is returned.
Cmd Parameters
<char1> 25000 | 100000
Query Parameters
<char1> 25000 | 100000
Range
NA
Default Value
25000
Syntax Example
Instrument is running in factory default mode of up to 25,000 points with up to 16 channels, and up to 16 traces on each channel.
:SYST:POIN:MAX 100000
The instrument reboots itself. When the reboot is complete, the instrument is set to 100,000 maximum points with 1 channel and up to 16 traces.
:SYST:POIN:MAX?
100000
To return the instrument to 25,000 maximum points with up to 16 channels, each with up to 16 traces:
:SYST:POIN:MAX 25000
The instrument reboots itself. When the reboot is complete, the instrument is set to 25,000 maximum points, with up to 16 channels, each with up to 16 traces.
:SYST:POIN:MAX?
25000
If the command is issued for the same number of points as the current instrument mode, no reboot is provided.
:SYST:POIN:MAX?
25000
:SYST:POIN:MAX 25000
No reboot.
 
:SYSTem:PORT:COUNt?
Description
Query only. The query outputs the number of instrument test ports.
Cmd Parameters
NA
Query Parameters
<NR1> 1 | 2 | 3 | 4
Range
NA
Default Value
2
Syntax Example
:SYST:PORT:COUN?
2
 
:SYSTem:PORT{1-4}:REFerence:ATTenuation <NRf>
:SYSTem:PORT{1-4}:REFerence:ATTenuation?
Description
The command sets the reference attenuation value on the given port. The query outputs the reference attenuation value on the given port. The VNA must have Option 061 or 062 installed.
Cmd Parameters
<NRf> The input parameter is in dB.
Query Parameters
<NR1> The output parameter is in dB.
Range
0 to 60 dB in 10 dB increments
Default Value
0 dB
Syntax Example
:SYST:PORT1:REF:ATT 2.0E1
:SYST:PORT1:REF:ATT?
 
:SYSTem:PORT{1-4}:TEST:ATTenuation <NRf>
:SYSTem:PORT{1-4}:TEST:ATTenuation?
Description
The command sets the test attenuation value on the given port. The query outputs the test attenuation value for the given port. The VNA must have Option 061 or 062 installed.
Cmd Parameters
<NRf> The input parameter is in dB.
Query Parameters
<NR1> The output parameter is in dB.
Range
0 to 60 dB in 10 dB increments
Default Value
0 dB
Syntax Example
:SYST:PORT1:TEST:ATT 10E0
:SYST:PORT1:TEST:ATT?
 
:SYSTem:POWerup:FILe <string>
:SYSTem:POWerup:FILe?
Description
The command sets the file path for the .cha power up configuration file to use on power up. The query outputs the file path of the .cha used for power up configuration.
Cmd Parameters
<string> Filename and path in the form: ’x:\directory\filename.cha’ where x:\directory\filename.cha must exist. See definition of <string>.
Query Parameters
<char1> Filename and path in the form: x:\directory\filename.cha
Range
NA
Default Value
NA
Syntax Example
:SYST:POW:FIL ’C:\filepath\filename.cha’
:SYST:POW:FIL?
C:\filepath\filename.cha
 
:SYSTem:POWerup:TYPe <char1>
:SYSTem:POWerup:TYPe?
Description
The command sets the power up instrument state to reset, last, or user defined. If USER is selected, a previously saved user-defined power up configuration file must exist and be stored on the instrument hard disk drive. The query outputs the power up instrument state as reset, last, or user defined.
Cmd Parameters
<char1> RESET | LAST | USER
Query Parameters
<char1> RESET | LAST | USER
Range
NA
Default Value
LAST
Syntax Example
:SYST:POW:TYP RESET
:SYST:POW:TYP?
 
:SYSTem:PRESet
Description
The command performs an instrument preset. This is the same function as provided by the front panel Preset key, or the ICON TOOLBAR | Preset icon, or the MENU BAR | Utilities | Preset command. No query. The type of preset performed depends on the type of preset set with the :SYSTem:PREset:TYPE command as either RESET or USER.
PRESet with RESET Set
If RESET has been is selected, the instrument returns to its factory as-shipped configuration, typically displaying one channel and four traces set to:
• Trace 1 (Tr1) set to S11 and a Smith Chart Impedance display.
• Trace 2 (Tr2) set to S12 and a dual rectangular display showing Log Magnitude and Phase graphs.
• Trace 3 (Tr3) set to S21 and a dual rectangular display showing Log Magnitude and Phase graphs.
• Trace 4 (Tr4) set to S22 and a Smith Chart Impedance display.
• Clears any user-defined segmented limit lines.
PRESET with USER Set
If USER has been selected, the instrument returns to a previously user-defined configuration state saved in either an All Channel Setup and Cal (CHA) file or in a All Channel Setup (STA) file.
Cmd Parameters
NA
Query Parameters
NA
Range
NA
Default Value
NA
Syntax Example
:SYST:PRES
 
:SYSTem:PRESet:FILe <string>
:SYSTem:PRESet:FILe?
Description
The commands sets the file path for the .cha file to use on preset. The query outputs the file path for the CHA file used for preset.
Cmd Parameters
<string> The directory and filename in the form: ’x:\directory\filename.cha’ where x:\directory\filename.cha must exist. See definition of <string>.
Query Parameters
<char1> Filename and path in the form: x:\directory\filename.cha
Range
NA
Default Value
NA
Syntax Example
:SYST:PRES:FIL ’C:\directory\filename.cha’
:SYST:PRES:FIL?
C:\directory\filename.cha
 
:SYSTem:PRESet:TYPe <char1>
:SYSTem:PRESet:TYPe?
Description
The command sets the preset type to RESET, RESET0 (reset zero), or USER. The query outputs the selected preset type. The different preset types provide the following functions:
• USER - If the USER type is selected, a previously saved user-defined preset file must exist on the instrument disk drive. Once set, issuing a :SYSTem:PRESet command returns the instrument to the user-defined configuration. The user-defined preset file name is set using the :SYSTem:PRESet:FILe command.
• RESET - If the RESET type is selected, issuing a :SYSTem:PRESet command returns the instrument to the factory as-shipped configuration.
• RESET0 - If the RESET0 type is selected, issuing the :SYSTem:PRESet command clears the instrument memory of all calibration kit settings, calibrations, configurations, channel configurations, trace configurations, and other similar settings and returns the instrument to a factory as-shipped state. Functionally, issuing a :SYSTem:PRESet:TYPe RESET0 command folllowed by a :SYSTem:PRESet command is the same as issuing a :SYSTem:PRESet:ZERo command. Note that the RESET0 parameter does not delete any files. See the :SYSTem:PRESet:ZERo command description for a complete listing of included and excluded preset elements.
The preset type can also be configured by from the front panel by:
• Navigating to MAIN | System | SYSTEM | Setup | SETUP | Preset Setup | PRESET SETUP
• On the PRESET SETUP menu, selecting either Default, Default 0, or Saved Setup.
• If Saved Setup is to be used, the user-defined configuration file must be saved to the instrument solid-state drive. Then select the Select Saved Setup File button and select the desired user-defined preset file. Then select Saved Setup.
A preset can also be executed from the front panel by doing one of the following actions:
• Pressing the front panel Preset key.
• Selecting the ICON TOOLBAR | Preset icon.
• Selecting the MENU BAR | Utilities | Preset command.
Cmd Parameters
<char1> RESET | RESET0 | USER
Query Parameters
<char1> RESET | RESET0 | USER
Range
NA
Default Value
RESET
Syntax Example
:SYST:PRES:TYP RESET
:SYST:PRES:TYP?
RESET
 
:SYSTem:PRESet:ZERo
Description
The command performs a Reset Zero which does not delete any files, but clears the instrument memory of all calibration kit settings, calibrations, configurations, channel configurations, trace configurations, and other similar settings and returns the instrument to a factory as-shipped state described above in the command :SYSTem:PRESet. No query.
Similar to *RST
Similar to the *RST command, :SYST:PRES:ZER resets the instrument to a pre-defined condition with all user programmable command parameters set to their default values. These default parameter values are listed under each SCPI command in this manual.
Included Preset Conditions with :SYST:PRES:ZER
Except for the Command Parameters explicitly excluded in the next section, the :SYST:PRES:ZER command does the following:
• Sets the device-specific functions to a known state that is independent of the past-use history of the device;
• Device specific commands may be provided to program a different reset state than the original factory-supplied one;
• Clears any user-defined segmented limit lines;
• Sets the macro defined by *DDT to a device-defined state;
• Disables macros;
• Forces the device into the OCIS state (Operation Complete Command Idle State);
• Forces the device into the OQIS state (Operation Complete Query Idle State).
Excluded Preset Conditions with :SYST:PRES:ZER
The :SYST:PRES:ZER command DOES NOT make the following changes:
• Does not change the state of the IEEE 488.1 interface;
• Does not change the selected IEEE 488.1 address of the device;
• Does not change the Output Queue;
• Does not change any Event Enable Register settings including the Standard Event Status Enable Register settings;
• Does not change any Event Register setting including the Standard Event Status Resister settings;
• Does not change the power-on-status-clear flag setting; and
• Does not change the Service Request Enable Register.
Cmd Parameters
NA
Range
NA
Default Value
NA
Syntax Example
:SYST:PRES:ZER
 
:SYSTem:RETRace:RF[:STATe] <char1>
:SYSTem:RETRace:RF[:STATe]?
Description
The command toggles the retrace RF energy state on or off. The default normal RF Retrace State is OFF.
RF Retrace OFF - Normal Operation
During normal operation, the VNA makes a sweep from the lowest to the highest point and the starts over again at the lowest point. During the start over or retrace period or when switching bands, the RF energy is blanked.
The best is to operate totally within an oscillator band so that the forward portion and retrace can step through the same frequency list either forward or backward and there is no loss of RF energy. With RF Retrace OFF, the VNA provides good leveling performance and spur rejection.
RF Retrace ON - AGC Circuits
For faster sweep measurement response and/or increased protection in DUTs with AGC (automatic gain control) circuits, this command sets the RF Retrace State to ON. With this setting, the RF energy status remains on during the sweep, during band changes, and during the sweep reset from highest point to lowest point.With RF Retrace ON, the VNA does not offer less leveling performance and spur rejection.
The query outputs the on/off state of retrace RF.
Cmd Parameters
<char1>: 1 | 0 | ON | OFF
Query Parameters
<char1>: 1 | 0
Range
NA
Default
1
Syntax Example
:SYST:RETR:RF 0
:SYST:RETR:RF?
 
:SYSTem:TIMe:ELAPsed:INITial?
Description
Query only. Outputs the number of seconds since the initial VNA turn on.
Cmd Parameters
NA
Query Parameters
NA
Query Output
<NR1> The output is the integer number of seconds.
Range
NA
Default Value
NA
Syntax Example
:SYST:TIM:ELAP:INIT?
 
:SYSTem:TIMe:ELAPsed:TURNon?
Description
Query only. Outputs the number of seconds since the most recent VNA turn on
Cmd Parameters
NA
Query Parameters
NA
Query Output
<NR1> The output is the integer number of seconds.
Range
NA
Default Value
NA
Syntax Example
:SYST:TIM:ELAP:TURN?
 
:SYSTem:TIMe:INITial?
Description
Query only. Outputs the initial VNA turn on time
Cmd Parameters
NA
Query Parameters
NA
Query Output
<Arbitrary ASCII> The output is a time stamp formatted as follows: MM.DD.YYYY, HH.MM.SS.
Range
NA
Default Value
NA
Syntax Example
:SYST:TIM:INIT?
 
:SYSTem:TIMe:TURNon?
Description
Query only. Outputs the most recent VNA turn on.
Cmd Parameters
NA
Query Parameters
NA
Query Output
<Arbitrary ASCII> The output is a time stamp formatted as follows: MM.DD.YYYY, HH.MM.SS.
Range
NA
Default Value
NA
Syntax Example
:SYST:TIM:TURN?