SOURce<Ch>:POWer<Pt>:CORRection...    Related Topics  

This subsystem controls the source power calibration.

 

Command tree: SOURce<Ch>POWer<Pt>:CORRection

[:AQUire]

:VERification

:RESult?

:COLLect

[:AQUire]

[:SCALe]

:PDIVision

:VERification

[:STATe]

:AVERage

:COUNt

:NTOLerance

:CFACtor

:FLATness

:METHod

:PMReadings

:RRECeiver

:CONVerter

[:STATe]

:DATA

:DEFault

:FAST:

:GENerator

[:STATe]

:HARMonic

[:ACQuire]

:LEVel

:OFFSet

:MIXer

:IF

[:ACQuire]

:LO

[:ACQuire]

:RF

[:ACQuire]

:NREadings

:OSOurces

[:STATe]

:PMETer

:ID

:STATe

Note: The SOURce<Ch>:POWer... subsystem comprises port-specific and general settings. Port-specific settings are valid for the port specified by the numeric suffix <Pt> (...:POWER<Pt>:...). General settings are valid for all test ports of the analyzer; the port suffix is ignored. Refer to the description of the individual commands for more information.  

SOURce<Ch>:POWer<Pt>:CORRection[:ACQuire]
PORT | GENerator | CONVerter | A1 | A2 | A3 | A4 | ESRC1 | ESRC2, <source_pt>

Selects the source for the source power calibration, starts and applies the source power calibration.

The command cannot be used unless a power meter is connected via GPIB bus, USB or LAN interface and configured in the External Power Meters dialog.

<Ch>

Calibrated channel number

 

<pt>

Calibrated port number. This suffix is ignored because the port number is specified in the parameter list.

 

PORT
GENerator
CONVerter

Analyzer port is the source of the calibrated wave.
External generator is the source.
Frequency converter with electronic attenuator (R&S ZVA-ZxxxE) is the source
The port, generator, or converter numbers are specified by means of the <source_number> parameter.

A1 | A2 | A3 | A4

Direct analyzer port selection. The parameters A1 and A2 are ZVR-compatible. No additional <port_number> parameter needs to be specified.

ESRC1 | ESRC2

Direct external generator selection. The parameters are ZVR-compatible. No additional parameters need to be specified.

 

<source_pt>

Analyzer port / generator port / converter port number, if PORT / GENerator / CONVerter is the first parameter.

Range [def. unit]

1 to port number of the analyzer/number of external generators [–]

*RST values

– (for all parameters)

 

SCPI, Command Types

Device-specific, no query

 

Example 1:

*RST; SOUR:POW:CORR:COLL:VER 0

Disable the verification sweep to speed up the source power calibration procedure.  

SOUR:POW:CORR:OSO:STAT OFF

To improve the accuracy, switch off all other sources during the calibration sweep.  

SOUR:POWer:CORR:COLL:METH RRAF; COLL:PMR 2

Enable fast power correction with two power meter readings.  

SOUR:POW:CORR:NRE 2; COLL:AVER:NTOL 0.5

Increase the number of readings and reduce the power tolerance to improve the accuracy.  

SOURce:POW:CORR:COLL:CFAC 0.9

Reduce the correction factor to 0.9.  

SOUR:POW:CORR:ACQ PORT,1

Perform a source power calibration using port 1 as a source port.  

SOUR:POW:CORR:STAT?

Check whether the calibration is applied (if no error occurred during the calibration sweep, the response is 1).

SENSe:CORRection:PSTATe?

Query the calibration label (if no error occurred during the calibration sweep, the response is 'Pcal').

Change the test setup, connect an external generator no. 1 to the reference plane.   

SOUR:POW:CORR:ACQ GEN,1

Perform a source power calibration using the external generator no. 1 as a source.  

SOUR:POW:CORR:GEN?

Check whether the calibration is applied (if no error occurred during the calibration sweep, the response is 1).  

 

Example 2:

Suppose that an external frequency converter with electronic attenuator is connected to port 1 of the analyzer and that the instrument is configured for frequency converter measurements.

SOUR:POW:CORR:ACQ CONV,1

Perform a source power calibration using the external converter no. 1 as a source.  

SOUR:POW:CORR:CONV?

Check whether the calibration is applied (if no error occurred during the calibration sweep,(the response is 1).  

 

 

SOURce<Ch>:POWer<Pt>:CORRection:COLLect[:ACQuire]
ASENsor | BSENsor

Initiates a source power calibration for the source port <Pt> using an external power meter no. 1 or 2. To initiate a source power calibration for arbitrary power meters, use the alternative commands listed in the program example below.

The command cannot be used unless a power meter is connected via GPIB bus, USB or LAN interface and configured in the External Power Meters dialog.

<Ch>

Calibrated channel number  

 

<Pt>

Calibrated port number.   

 

ASENsor |
BSENsor

External power meter Pmtr 1
External power meter Pmtr 2

*RST value

ASENsor

 

SCPI, Command Types

Device-specific, no query

 

Example:

SOUR:POW3:CORR:COLL BSEN

Perform a source power calibration for port 3 using power meter no. 2.  

SOUR:POW:CORR:PMET:ID 2

Select power meter no. 2.

SOUR:POW:CORR:ACQ PORT,3

Perform a source power calibration for port 3 using the previously selected power meter no. 2.  

 

 

SOURce<Ch>:POWer<Pt>:CORRection[:ACQuire]:VERification:RESult?

Returns the result of the last verification sweep. This command requires an enabled verification sweep (SOURce<Ch>:POWer<Pt>:CORRection:COLLect[:ACQuire]:VERification[:STATe] ON, see example below).

<Ch>

Calibrated channel number. This parameter is ignored; the result is based on the last verification sweep acquired.  

 

<Pt>

Calibrated port number. This parameter is ignored; the result is based on the last verification sweep acquired.  

 

Response:

Result of the sweep in the format <Boolean>, <Max. Offset> where:

<Boolean>

Calibration passed, i.e. the cal. power offset is below the tolerance (1), or failed (0).

<Max. Offset>

Maximum power offset between the measured power at the reference plane and the Cal Power during the verification sweep in dB.  

*RST value

–
If no verification sweep result is available, the command returns 0.  

 

SCPI, Command Types

Device-specific, command or query

 

Example:

*RST; SOUR:POW:CORR:COLL:VER ON

Enable the verification sweep.  

SOUR:POW:CORR:NRE 2; COLL:AVER:NTOL 0.5

Increase the number of readings and reduce the power tolerance to improve the accuracy.  

SOUR:POW:CORR:ACQ PORT,1

Perform a source power calibration using port 1 as a source port.  

SOUR:POW:CORR:COLL:VER:RES?

Query the result of the verification sweep.

 

 

 

SOURce<Ch>:POWer<Pt>:CORRection:COLLect[:ACQuire]:VERification[:STATe] <Boolean>

Enables or disables a verification sweep that the analyzer performs after the source power calibration. The command is valid for all channels, ports and external generators.

<Ch>

Calibrated channel number. This parameter is ignored; the verification is either enabled or disabled for all channels.  

 

<Pt>

Calibrated port number. This parameter is ignored; the verification is either enabled or disabled for all sources.

 

<Boolean>

Enables (ON) or disables (OFF) the verification sweep.

*RST value

ON

 

SCPI, Command Types

Device-specific, command or query

 

Example:

See SOURce<Ch>:POWer<Pt>:CORRection[:ACQuire], SOURce<Ch>:POWer<Pt>:CORRection[:ACQuire]:VERification:RESult?

 

 

SOURce<Ch>:POWer<Pt>:CORRection:COLLect:AVERage[:COUNt] <readings>

Sets a limit for the number of calibration sweeps in the source power calibration. The command is valid for all channels, ports and external generators. Equivalent command: SOURce<Ch>:POWer<Pt>:CORRection:NREadings.

<Ch>

Calibrated channel number. This parameter is ignored; the limit applies to all channels.  

 

<Pt>

Calibrated port number. This parameter is ignored; the limit applies to all sources.

 

<readings>

Number of readings

Range [def. unit]

1 to 100 [–]

*RST value

1  

 

SCPI, Command Types

Device-specific, command or query

 

Example:

See SOURce<Ch>:POWer<Pt>:CORRection[:ACQuire] (for equivalent command SOURce<Ch>:POWer<Pt>:CORRection:NREadings).

 

 

SOURce<Ch>:POWer<Pt>:CORRection:COLLect:AVERage:NTOLerance <tolerance>

Specifies the maximum deviation of the measured power from the target power of the calibration. The command is valid for all channels and calibrated ports.

<Ch>

Calibrated channel number. This parameter is ignored; the tolerance value is valid for all sources.  

 

<Pt>

Calibrated port number. This parameter is ignored; the tolerance value is valid for all sources.

 

<tolerance>

Tolerance value

Range [def. unit]

0.001 dB to 1000 dB [dB]

*RST value

1 dB  

 

SCPI, Command Types

Device-specific, command or query

 

Example:

See SOURce<Ch>:POWer<Pt>:CORRection[:ACQuire].

 

 

SOURce<Ch>:POWer<Pt>:CORRection:COLLect:CFACtor <convergence>

Specifies the convergence factor for a source power calibration.

<Ch>

Calibrated channel number. This parameter is ignored; the convergence factor is valid for all sources.  

 

<Pt>

Calibrated port number. This parameter is ignored; the convergence factor is valid for all sources.

 

<convergence>

Convergence factor

Range [def. unit]

0 to 2 [–]. UP and DOWN increment/decrement the convergence factor in 1-dB steps.

*RST value

1

 

SCPI, Command Types

Device-specific, command or query

 

Example:

See SOURce<Ch>:POWer<Pt>:CORRection[:ACQuire].  

 

 

SOURce<Ch>:POWer<Pt>:CORRection:COLLect:FLATness <Boolean>

Enables or disables the source power calibration. The command is valid for all channels, ports and external generators.

It is not possible to disable flatness calibration and the reference receiver calibration simultaneously (SOURce<Ch>:POWer<Pt>:CORRection:COLLect:RRECeiver).

<Ch>

Calibrated channel number. This parameter is ignored; the verification is either enabled or disabled for all channels.  

 

<Pt>

Calibrated port number. This parameter is ignored; the verification is either enabled or disabled for all sources.

 

<Boolean>

Enables (ON) or disables (OFF) the flatness calibration. With disabled flatness calibration, only one calibration sweep is performed in order to calibrate the reference receiver; the previous source calibration data is not overwritten.

*RST value

ON

 

SCPI, Command Types

Device-specific, command or query

 

Example:

*RST; SOUR:POW:CORR:COLL:VER 0

Disable the verification sweep to speed up the source power calibration procedure.  

SOUR:POW:CORR:COLL:FLAT OFF; RREC ON

Disable flatness cal and enable reference receiver calibration.  

SOUR:POW:CORR:ACQ PORT,1

Perform a single source power calibration sweep using  port 1 as a source port.  

 

 

SOURce<Ch>:POWer<Pt>:CORRection:COLLect:METHod PMONly | RRAFter | RRONly

Selects the source power calibration method.

<Ch>

Calibrated channel number. This parameter is ignored; the method is valid for all channels.  

 

<Pt>

Calibrated port number. This parameter is ignored; the method is valid for all sources.

 

Parameters

PMONly – Power Meter only (requires SOURce<Ch>:POWer<Pt>:CORRection:COLLect:FLATness ON and SOURce<Ch>:POWer<Pt>:CORRection:COLLect:RRECeiver OFF)

RRAFter – Reference Receiver after the number of readings specified via SOURce<Ch>:POWer<Pt>:CORRection:COLLect:PMReadings (requires SOURce<Ch>:POWer<Pt>:CORRection:COLLect:FLATness ON)

RRONly – Reference Receiver only (requires SOURce<Ch>:POWer<Pt>:CORRection:COLLect:RRECeiver OFF)  

*RST value

RRAFter

 

SCPI, Command Types

Device-specific, command or query

 

Example:

See SOURce<Ch>:POWer<Pt>:CORRection[:ACQuire].  

 

 

SOURce<Ch>:POWer<Pt>:CORRection:COLLect:PMReadings <no_readings>

Selects the number of power meter readings for source power calibration method SOURce<Ch>:POWer<Pt>:CORRection:COLLect:METHod RRAFter.

<Ch>

Calibrated channel number. This parameter is ignored; the parameter is valid for all channels.  

 

<Pt>

Calibrated port number. This parameter is ignored; the parameter is valid for all sources.

 

<no_readings>

Number of power meter readings. If the value exceeds the maximum number of calibration sweeps (SOURce<Ch>:POWer<Pt>:CORRection:COLLect:AVERage[:COUNt]) the latter is adjusted.

Range [def. unit]

1 to 100 [–]

*RST value

1

 

SCPI, Command Types

Device-specific, command or query

 

Example:

See SOURce<Ch>:POWer<Pt>:CORRection[:ACQuire].  

 

 

SOURce<Ch>:POWer<Pt>:CORRection:COLLect:RRECeiver <Boolean>

Enables or disables calibration of the reference receiver together with the source power calibration.

It is not possible to disable flatness calibration (SOURce<Ch>:POWer<Pt>:CORRection:COLLect:FLATness) and the reference receiver calibration simultaneously.

<Ch>

Calibrated channel number. This parameter is ignored; the verification is either enabled or disabled for all channels.  

 

<Pt>

Calibrated port number. This parameter is ignored; the verification is either enabled or disabled for all sources.

 

<Boolean>

Enables (ON) or disables (OFF) reference receiver calibration.

*RST value

ON

 

SCPI, Command Types

Device-specific, command or query

 

Example:

See SOURce<Ch>:POWer<Pt>:CORRection:COLLect:FLATness

 

 

SOURce<Ch>:POWer<Pt>:CORRection:CONVerter<Con>[:STATe] <Boolean>

Enables or disables the source power calibration for channel <Ch> and for an external frequency converter number <Con>. The converter must be equipped with an electronic attenuator (R&S ZVA-ZxxxE). The command is disabled unless a source power calibration for the external converter has been performed (SOURce<Ch>:POWer<Pt>:CORRection[:ACQuire] CONVerter, <source_pt>). To enable or disable a source power calibration for an analyzer port use SOURce<Ch>:POWer<Pt>:CORRection[:STATe].

<Ch>

Calibrated channel number  

 

<Pt>

Calibrated port number. This suffix is ignored; the converter is selected via <Con>.

 

<Con>

Converter number

 

<Boolean>

Enables (ON) or disables (OFF) the source power calibration for the converter <Con>.

*RST value

OFF [–]

 

SCPI, Command Types

Device-specific, command or query

 

Example:

See SOURce<Ch>:POWer<Pt>:CORRection[:ACQuire].

 

 

SOURce<Ch>:POWer<Pt>:CORRection:DATA
'<src_string>', <block> | <numeric_value>...

Reads or writes source power correction data sets. A power correction data set contains n real values where:

Increasing (decreasing) the values in the correction data sets increases (decreases) the power at the reference plane. Writing correction data (the setting command) fails if the number of transferred values is not equal to the number of sweep points.

<Ch>

Calibrated channel number  

 

<Pt>

Calibrated port number. This parameter is ignored; the port is identified by the '<src_string>'.

 

'<src_string>'

Identifier for the source of the calibrated wave:

  • 'A<n>' or 'PORT<n>' denote correction data for the analyzer port no. <n>.

  • 'ESRC<n>' or 'GEN<n>' denote correction data for the external generator no. <n>.

  • 'CONV<n>' denotes correction data for a frequency converter (e.g. R&S ZVA-Z110E) at port no. <n>

 

<block> | <numeric_value>...

Power correction values in block data format or as a comma-separated list of real numbers. The query returns a list of numbers.

Range [def. unit]

All numbers are interpreted as dB-values.

*RST value

–

 

SCPI, Command Types

Device-specific, command or query

 

Example:

*RST; :SWE:POIN 10

Reset the instrument and reduce the number of sweep points to 10.

SOUR:POW:CORR:ACQ PORT,1

Perform a source power calibration using port 1 as a source port.

SOUR:POW:CORR:DATA? 'A1'

Query the correction values. The analyzer returns 10 comma-separated real numbers.  

SOUR:POW:CORR:DATA 'A1', 1, 2, 3, 4, 5, -6, -7, -8, -9, -0

Replace the correction values by ten (new) numbers.

 

 

SOURce<Ch>:POWer<Pt>:CORRection:DEFault <Boolean>

Enables the analyzer to create a set of default source power calibration data. The analyzer uses the reference channel power to acquire the default calibration data. No external power meter is required.

The main purpose of the default calibration data set is to provide a dummy power calibration which you can replace with your own, external power calibration data. You may have acquired the external data in a previous session or even on an other instrument. If you want to use the external power calibration data on the analyzer, generate the default data set first and overwrite it with the external data. For details refer to the program example below.

<Ch>

Calibrated channel number. This parameter is ignored, the channel settings are relevant only when the default data set is created (SOURce<Ch>:POWer<Pt>:CORRection[:ACQuire]).  

 

<Pt>

Calibrated port number. This parameter is ignored.

 

<Boolean>

Enables (ON) or disables (OFF) the dummy source power calibration for port number <Pt>. OFF means that a real source power calibration is performed, for which an external power meter must be connected to the analyzer.

*RST value

OFF [–]

 

SCPI, Command Types

Device-specific, command or query

 

Example:

*RST; :SWE:POIN 10

Reset the instrument and reduce the number of sweep points to 10.

SOUR:POW:CORR:DEF ON

Enable a dummy source power calibration.

SOUR:POW:CORR:ACQ PORT,1

Perform a dummy source power calibration using port 1 as a source port.

SOUR:POW:CORR:DATA? 'A1'

Query the correction values. The analyzer returns 10 comma-separated real numbers.  

MMEM:STOR:CORR 1,'Calgroup_Ch1.cal'

Store the default source power calibration data to the calibration pool in the default directory C:\Rohde&Schwarz\NWA\Calibration\Data.

<Replace the generated file Calgroup_Ch1.cal with your external power calibration data.>

MMEM:LOAD:CORR 1,'Calgroup_Ch1.cal'

Load the external data and apply them to channel 1 and port 1.

DISP:MENU:KEY:EXEC 'Cal Manager'

Open the Calibration Manager dialog to check the result of the previous actions.

 

 

SOURce<Ch>:POWer<Pt>:CORRection:FAST <Boolean>

Enables or disables a fast source power calibration, where the external power meter is used for the first calibration sweep only.

In firmware versions V2.71 and higher, it is recommended to use the generalized commands SOURce<Ch>:POWer<Pt>:CORRection:COLLect:METHod and SOURce<Ch>:POWer<Pt>:CORRection:COLLect:PMReadings.

<Ch>

Calibrated channel number. This parameter is ignored; the fast calibration mode applies to all channels.  

 

<Pt>

Calibrated port number. This parameter is ignored; the fast calibration mode is either enabled or disabled for all sources.  

 

<Boolean>

Enables (ON) or disables (OFF) fast source power calibration.

*RST value

OFF [–]

 

SCPI, Command Types

Device-specific, command or query

 

 

SOURce<Ch>:POWer<Pt>:CORRection:GENerator<Gen>:LEVel:OFFSet <offset>

Specifies a gain (positive values) or an attenuation (negative values) in the signal path between the external generator and the calibrated reference plane (Cal Power Offset). The value has no impact on the generator power.  

<Ch>

Calibrated channel number  

 

<Pt>

Calibrated port number. This suffix is ignored; the generator is selected via <Gen>.

 

<Gen>

Generator number

 

<offset>

Gain or attenuation value

Range [def. unit]

–300 dB to +300 dB [dB]

*RST value

0 dB

 

SCPI, Command Types

Device-specific, command or query

 

Example:

Assume that a DUT requires a constant input power of +35 dBm at its port 2, and that the measurement path contains an amplifier with a 30 dB gain.

SYST:COMM:RDEV:GEN1:DEF 'Ext. Gen. 1', 'SME02', 'gpib0',  '21'

Configure an R&S SME02 generator as external generator no. 1, assigning the name Ext. Gen. 1 and a GPIB address 21.

SOUR:POW:GEN1:OFFS 5, ONLY

Set the source power of generator no. 1 to +5 dBm.

SOUR:POW:CORR:GEN1:LEV:OFFS 30

Specify the gain of the amplifier in the signal path between the external generator and the input port of the DUT.  

SOUR:POW:CORR:ACQ GEN,1

Perform a source power calibration using the external generator no. 1 as a source port and the target power of +35 dBm.

 

 

SOURce<Ch>:POWer<Pt>:CORRection:GENerator<Gen>[:STATe] <Boolean>

Enables or disables the source power calibration for channel <Ch> and for an external generator number <Gen>. The command is disabled unless a source power calibration for the external generator has been performed (SOURce<Ch>:POWer<Pt>:CORRection[:ACQuire] GENerator, <source_pt>). To enable or disable a source power calibration for an analyzer port use SOURce<Ch>:POWer<Pt>:CORRection[:STATe].

<Ch>

Calibrated channel number  

 

<Pt>

Calibrated port number. This suffix is ignored; the generator is selected via <Gen>.

 

<Gen>

Generator number

 

<Boolean>

Enables (ON) or disables (OFF) the source power calibration for an external generator number <Gen>.

*RST value

OFF [–]

 

SCPI, Command Types

Device-specific, command or query

 

Example:

See SOURce<Ch>:POWer<Pt>:CORRection[:ACQuire].

 

 

SOURce<Ch>:POWer<Pt>:CORRection:HARMonic[:ACQuire]

Starts the source calibration (1st power calibration step for harmonic measurements), stores and applies the calibration data. The external power meter used is selected via SOURce<Ch>:POWer<Pt>:CORRection:PMETer:ID.

<Ch>

Calibrated channel number

 

<pt>

Port number This suffix is ignored; the analyzer calibrates the port that is selected as a source port for the harmonic measurement ([SENSe<Ch>:]FREQuency:CONVersion:HARMonic:SPORt).

 

SCPI, Command Types

Device-specific, no query

 

Example:

*RST; FREQ:STAR 0.5E+9; STOP 1E+9

Reset the analyzer (activating a frequency sweep) and set the sweep range between 1 GHz and 1.1 GHz.

FREQ:CONV:HARM:ORD 4; SPOR 1; RPOR 2

Configure a 4th harmonic measurement with source port 1 and receive port 2. The measurement is still not enabled.

FREQ:CONV HARM

Enable the configured harmonic measurement.

SOUR:POW:CORR:PMET:ID 1

Select power meter no. 1 (previously configured in the External Power Meters dialog and properly connected) for the RF source calibration.  

SOUR:POW:CORR:HARM

Start source power calibration at the previously selected source port 1.

CORR:POW:HARM:ACQ

Start receiver power calibration at the previously selected receive port 2.  

CALC:PAR:MEAS? "TRC1"

Query the measured quantity. The analyzer measures the wave quantity b2, the response is 'B2D1SAM'.  

 

 

SOURce<Ch>:POWer<Pt>:CORRection:IMODulation:LTONe[:ACQuire]

Starts the source calibration for the lower tone (1st power calibration step for intermodulation measurements), stores and applies the calibration data. The external power meter used is selected via SOURce<Ch>:POWer<Pt>:CORRection:PMETer:ID.

<Ch>

Calibrated channel number

 

<pt>

Port number This suffix is ignored; the analyzer calibrates the port that is selected as a source port for the intermodulation measurement ([SENSe<Ch>:]FREQuency:IMODulation:LTONe).

 

SCPI, Command Types

Device-specific, no query

 

Example:

*RST; FREQ:IMOD:LTON PORT,1; UTON PORT, 3

Reset the instrument to create the default channel no. 1. Select port 1 as a source port for the lower tone, port 3 as a source port for the upper tone.

FREQ:IMOD:REC 2

Select port 2 as a receiver port.

FREQ:STAR 1GHZ; STOP 2GHz

Define a suitable  sweep  range to ensure that the analyzer can measure all intermodulation products.

SOUR:POW:CORR:PMET:ID 1

Select power meter no. 1 (previously configured in the External Power Meters dialog and properly connected) for the RF source calibration.  

SOUR:POW:CORR:IMOD:LTON

Start source power calibration for the lower tone at the previously selected source port 1.

SOUR:POW:CORR:IMOD:UTON

Start source power calibration for the upper tone at the previously selected source port 3.

CORR:POW:IMOD:ACQ

Start receiver power calibration at the previously selected receive port 2.  

CALC:PAR:SDEF 'IM_Meas', 'IP3UI'

Create a new channel no. 2 and a trace named 'IM_Meas'. Select the upper 3rd-order intercept point at the DUT input as a measured quantity.

 

 

SOURce<Ch>:POWer<Pt>:CORRection:IMODulation:UTONe[:ACQuire]

Starts the source calibration for the upper tone (2nd power calibration step for intermodulation measurements), stores and applies the calibration data. The external power meter used is selected via SOURce<Ch>:POWer<Pt>:CORRection:PMETer:ID.

<Ch>

Calibrated channel number

 

<pt>

Port number This suffix is ignored; the analyzer calibrates the port that is selected as a source port for the intermodulation measurement ([SENSe<Ch>:]FREQuency:IMODulation:UTONe).

 

SCPI, Command Types

Device-specific, no query

 

Example:

See SOURce<Ch>:POWer<Pt>:CORRection:IMODulation:LOWer[:ACQuire]

 

 

SOURce<Ch>:POWer<Pt>:CORRection:LEVel:OFFSet <offset>

Specifies a gain (positive values) or an attenuation (negative values) in the signal path between the source port and the calibrated reference plane (Cal Power Offset). The value has no impact on the source power.   

<Ch>

Calibrated channel number  

 

<Pt>

Calibrated port number

 

<offset>

Gain or attenuation value

Range [def. unit]

–300 dB to +300 dB [dB]

*RST value

0 dB

 

SCPI, Command Types

Device-specific, command or query

 

Example:

Assume that a DUT requires a constant input power of +35 dBm at port 2, and that the measurement path contains an amplifier with a 30 dB gain.

*RST; SOUR:POW 0

Reset the instrument and set the internal source power (base channel power) for the default channel 1 to 0 dBm.  

SOUR:POW2:OFFS 5, ONLY

Replace the source power at port 2 by +5 dBm. The powers at the remaining ports are not affected.  

SOUR:POW2:CORR:LEV:OFFS 30

Specify the gain of the amplifier in the signal path between the analyzer port 2 and the input port of the DUT.  

SOUR:POW:CORR:ACQ PORT,2

Perform a source power calibration using port 2 as a source port and the target power of +35 dBm.

 

 

SOURce<Ch>:POWer<Pt>:CORRection:MIXer:IF[:ACQuire]

Starts the IF source calibration (2nd power calibration step for vector (not scalar) mixer measurements), stores and applies the calibration data. The external power meter is selected via SOURce<Ch>:POWer<Pt>:CORRection:PMETer:ID.

The IF source calibration is independent of the RF source and LO source calibration; see description of the mixer calibration procedure.

<Ch>

Calibrated channel number

 

<pt>

Calibrated port number. This suffix is ignored because the IF signal is always assigned to port 2.

 

SCPI, Command Types

Device-specific, no query

 

Example:

FREQ:CONV VMIX
...

Select a vector mixer measurement; set frequencies, see e.g. example for [SENSe<Ch>:]FREQuency:CONVersion:MIXer:TFRequency.  

SOUR:POW:CORR:PMET:ID 1

Select power meter no. 1 (previously configured in the External Power Meters dialog and properly connected) for the RF source calibration.  

SOUR:POW:CORR:MIX:RF

Start the RF source calibration. Change the test setup for the IF source calibration (see mixer calibration procedure).

SOUR:POW:CORR:MIX:IF

Start the IF source calibration.  

FREQ:CONV:MIX:LOIN 3

Select port no. 3 as a signal source for the LO signal. Adjust the test setup for the LO source calibration.

SOUR:POW:CORR:MIX:LO

Start the LO source calibration.  

 

 

SOURce<Ch>:POWer<Pt>:CORRection:MIXer:LO[:ACQuire]

Starts the LO source calibration (3rd power calibration step for scalar and vector mixer measurements), stores and applies the calibration data. The external power meter is selected via SOURce<Ch>:POWer<Pt>:CORRection:PMETer:ID.

The LO source calibration is independent of the RF source and IF receiver calibration; see description of the mixer calibration procedure.

<Ch>

Calibrated channel number

 

<pt>

Calibrated port number. This suffix is ignored; the port is selected via [SENSe<Ch>:]FREQuency:CONVersion:MIXer:LOINternal or [SENSe<Ch>:]FREQuency:CONVersion:MIXer:LOEXternal.

 

SCPI, Command Types

Device-specific, no query

 

Example:

See SOURce<Ch>:POWer<Pt>:CORRection:MIXer:RF[:ACQuire].  

 

 

SOURce<Ch>:POWer<Pt>:CORRection:MIXer:RF[:ACQuire]

Starts the RF source calibration (1st power calibration step for scalar and vector mixer measurements), stores and applies the calibration data. The external power meter used is selected via SOURce<Ch>:POWer<Pt>:CORRection:PMETer:ID.

For scalar mixer measurements the command initiates two calibration steps, the first over the RF frequency range, the second over the IF frequency range (for a subsequent receiver power calibration, [SENSe<Ch>:]CORRection:POWer<port_no>:MIXer:IF:ACQuire). See description of the mixer calibration procedure.

<Ch>

Calibrated channel number

 

<pt>

Calibrated port number. This suffix is ignored because the RF signal is always assigned to port 1.

 

SCPI, Command Types

Device-specific, no query

 

Example:

FREQ:CONV MIX
...

Select a scalar mixer measurement; set frequencies, see e.g. example for [SENSe<Ch>:]FREQuency:CONVersion:MIXer:TFRequency.  

SOUR:POW:CORR:PMET:ID 1

Select power meter no. 1 (previously configured in the External Power Meters dialog and properly connected) for the RF source calibration.  

SOUR:POW:CORR:MIX:RF

Start the RF source calibration. Change the test setup for the IF receiver calibration (see mixer calibration procedure).

CORR:POWer:MIX:IF:ACQuire

Start the IF receiver calibration.  

FREQ:CONV:MIX:LOIN 3

Select port no. 3 as a signal source for the LO signal. Adjust the test setup for the LO source calibration.

SOUR:POW:CORR:MIX:LO

Start the LO source calibration.  

 

 

SOURce<Ch>:POWer<Pt>:CORRection:NREadings <readings>

Sets a limit for the number of calibration sweeps in the source power calibration. The command is valid for all channels, ports and external generators. Equivalent command: SOURce<Ch>:POWer<Pt>:CORRection:COLLect:AVERage[:COUNt].

<Ch>

Calibrated channel number. This parameter is ignored; the limit applies to all sources.

 

<Pt>

Calibrated port number. This parameter is ignored; the limit applies to all sources.

 

<readings>

Number of readings

Range [def. unit]

1 to 100 [–]

*RST value

1  

 

SCPI, Command Types

Device-specific, command or query

 

Example:

See SOURce<Ch>:POWer<Pt>:CORRection[:ACQuire].

 

 

SOURce<Ch>:POWer<Pt>:CORRection:OSOurces[:STATe] <Boolean>

Switches off all other sources during the calibration sweep for channel <Ch>.  

<Ch>

Calibrated channel number  

 

<Pt>

Calibrated port number. This parameter is ignored; the setting is valid for all sources.

 

<Boolean>

ON – Other sources not necessarily switched off
OFF – Other sources switched off during the calibration sweep  

*RST value

ON [–]

 

SCPI, Command Types

Device-specific, command or query

 

Example:

See SOURce<Ch>:POWer<Pt>:CORRection[:ACQuire].

 

 

SOURce<Ch>:POWer<Pt>:CORRection:PMETer:ID <pmeter_no>

Selects an external power meter for the source power calibration.  

The command cannot be used unless a power meter is connected via GPIB bus, USB or LAN interface and configured in the External Power Meters dialog.  

<Ch>

Calibrated channel number  

 

<Pt>

Calibrated port number. This parameter is ignored; the power meter selection is valid for all sources.  

 

<pmeter_no>

Number of external power meter. The parameters UP, DOWN, MIN, MAX are not available for this command.

Range [def. unit]

1 to number of external generators [–]

*RST value

The power meter selection is not changed by a reset of the analyzer.

 

SCPI, Command Types

Device-specific, command or query.

 

Example:

See SOURce<Ch>:POWer<Pt>:CORRection:COLLect[:ACQuire] and SOURce<Ch>:POWer<Pt>:CORRection:MIXer:RF[:ACQuire].

 

 

SOURce<Ch>:POWer<Pt>:CORRection:STATe <Boolean>

Enables or disables the source power calibration for channel <Ch> and for port number <Pt>. The command is disabled unless a source power calibration for the analyzer port has been performed (SOURce<Ch>:POWer<Pt>:CORRection[:ACQuire]). To enable or disable a source power calibration for an external generator use SOURce<Ch>:POWer<Pt>:CORRection:GENerator[:STATe].

<Ch>

Calibrated channel number  

 

<Pt>

Calibrated port number

 

<Boolean>

Enables (ON) or disables (OFF) the source power calibration for port number <Pt>.

*RST value

OFF [–]

 

SCPI, Command Types

Device-specific, command or query

 

Example:

See SOURce<Ch>:POWer<Pt>:CORRection[:ACQuire].