CALCulate:MEASure:DATA Commands

Controls writing and reading VNA measurement data.

CALCulate:MEASure:

DATA

  | BUFFer?

       | X

       | Y

  | FDATa

  | FMEMory

  | RAW

       | CATalog?

  | SDATa

  | SMEMory

  | SNP?

       | PORTs?

             | SAVE

  | X

       | AXIS

             | DOMain

             | FIXed

                  | PARameter

                       | VALue

       | [:VALues]

 

Click a keyword to view the command details.

See Also

(Write) CALCulate<cnum>:MEASure<mnum>:DATA:<char> <data>

(Read) CALCulate<cnum>:MEASure<mnum>:DATA:<char>?

Applicable Models: All

Reads or writes Measurement data, Memory data, or Normalization Divisor data from the Data Access Map location.

  • For Measurement data, use FDATA or SDATA

  • For Memory data, use FMEM or SMEM. When querying memory, you must first store a trace into memory using CALC:MEAS:MATH:MEMorize.

  • For Normalization Divisor (Receiver Power Cal error term) data, use SDIV.

  • Use FORMat:DATA to change the data type (<REAL,32>, <REAL,64> or <ASCii,0>).

  • Use FORMat:BORDer to change the byte order. Use “NORMal” when transferring a binary block from LabView or VEE. For other programming languages, you may need to "SWAP" the byte order.

Equation Editor Notes:

  • When equation editor is active on a trace in a standard S-parameter channel, Calc:Data returns the data from the parameter on the trace that was measured last. For example, for the equation "S22 + S33 + S11”, then S33 is the last measured parameter because it uses source port 3.

  • In applications, if equation editor is active and the original parameter for the trace is not requested anywhere in the channel, then zeros are returned. If the original parameter is being measured within the channel, then data for the original parameter is returned.

  • In general, if an equation contains no measurement parameters, then data for the original parameter is returned.

Note: The Calc:Data SCORR command to read/write error terms is Superseded with SENS:CORR:CSET:DATA. SCORR commands do NOT accommodate greater than 12 error terms.

Parameters

  

<cnum>

Channel number of the measurement (optional).

<mnum>

Measurement number for each measurement.

<char>

FDATA

Formatted measurement data to or from Data Access Map location. Display (access point 2).

Note: When querying FDATA, data is received in degrees. When setting phase using FDATA, the command expects the data in radians.

  • Corrected data is returned when correction is ON.

  • Uncorrected data is returned when correction is OFF.

  • Returns TWO numbers per data point for Polar and Smith Chart format. For both formats, the data is the real and imaginary data. To retrieve the resistance and reactance of a trace of data, use the Z-Reflection conversion feature.

  • Returns one number per data point for all other formats.

  • Format of the read data is same as the displayed format.

 

SDATA

Complex measurement data.

Writes data to Data Access Map location. Raw Measurement (access point 0).

Note: Write access is forbidden on the standard channel if factory calibration is on (applies to ENA/PXI/Streamline, not to PNA); to disable factory calibration use SYST:FCOR:CHAN:COUP:STAT OFF command.

  • When writing corrected data, and correction is ON, it will be corrected again, resulting in meaningless data.

  • For unratioed measurements, the magnitude of the complex number is in sqrt(mW).

Reads data from Apply Error Terms (access point 1).

  • Returns TWO numbers per data point.

  • Corrected data is returned when correction is ON.

  • Uncorrected data is returned when correction is OFF.

 

FMEM

Formatted memory data to or from Data Access Map location. Memory result  (access point 4).

  • Returns TWO numbers per data point for Polar and Smith Chart format.

  • Returns one number per data point for all other formats.

  • Format of the read data is same as the displayed format.

  • Returned data reflects the correction level (ON|OFF) when the data was stored into memory.

 

SMEM

Complex memory data to or from Data Access Map location. Memory  (access point 3).

  • Returns TWO numbers per data point.

  • Returned data reflects the correction level (ON|OFF) when the data was stored into memory.

  • Returned data reflects the correction level (ON|OFF) when the data was stored into memory.

Examples

CALC:MEAS:DATA:FDATA Data(x)
calculate2:measure2:data:sdata data(r,i)

See another example using this command.

Return Type

Block data

 

Default

Not Applicable

 

CALCulate<cnum>:MEASure<mnum>:DATA:BUFFer:X? <bufferName>

Applicable Models: E505xA with VNA ports

(Read-only) Retrieves frequency tone data from the modulation distortion measurement.

Parameters

  

<cnum>

Channel number of the measurement (optional).

<mnum>

Measurement number for each measurement.

<bufferName>

(string) – Name of the buffer to be read.

Note: The following names assume a 2-port VNA. Also, by default, the parameter names assume that VNA Port 1 is connected to the DUT input and VNA Port 2 is connected to the DUT output. If the RF Path settings are changed from the default, the names will change accordingly. For example, if the VNA has 4 ports and Port 4 is connected to the DUT output, the names will change to "PIn1", "POut4", "S11", "S41", etc.

Choose from:

"POut2" - Power Out

"PIn1" - Power In

"MSig2" - Modulation Signal Out

"MDist2" - Modulation Distortion Out

"MGain21" - Modulation Gain

"MComp21" - Modulation Compression

"PGain21" - Power Gain

"S11" - Linear Input Match

"S21" - Linear Gain

"LPin1" - Linear Power In

"LPOut1" - Linear Reflected Power In

"LPOut2" - Linear Power Out

Examples

CALC:MEAS1:DATA:BUFF:X? "POut2"

Return Type

Depends on FORM:DATA command

Default

Not Applicable

CALCulate<cnum>:MEASure<mnum>:DATA:BUFFer:Y? <bufferName>

Applicable Models: E505xA with VNA ports

(Read-only) Retrieves trace data (Y data) from the modulation distortion measurement.

Parameters

  

<cnum>

Channel number of the measurement (optional).

<mnum>

Measurement number for each measurement.

<bufferName>

(string) – Name of the buffer to be read.

Note: The following names assume a 2-port VNA. Also, by default, the parameter names assume that VNA Port 1 is connected to the DUT input and VNA Port 2 is connected to the DUT output. If the RF Path settings are changed from the default, the names will change accordingly. For example, if the VNA has 4 ports and Port 4 is connected to the DUT output, the names will change to "PIn1", "POut4", "S11", "S41", etc.

Choose from:

"POut2" - Power Out

"PIn1" - Power In

"MSig2" - Modulation Signal Out

"MDist2" - Modulation Distortion Out

"MGain21" - Modulation Gain

"MComp21" - Modulation Compression

"PGain21" - Power Gain

"S11" - Linear Input Match

"S21" - Linear Gain

"LPin1" - Linear Power In

"LPOut1" - Linear Reflected Power In

"LPOut2" - Linear Power Out

Examples

CALC:MEAS1:DATA:BUFF:Y? "POut2"

Return Type

Depends on FORM:DATA command

Default

Not Applicable

CALCulate<cnum>:MEASure<mnum>:DATA:RAW <string>,<dataBlock>

Applicable Models: E505xA with VNA ports

(Write-Read) Sets the raw data for the specified raw parameter buffer. For unratioed parameters, the source port separator can be either ‘,’ or ‘_’. This command applies to a Standard channel only. Application channels will return an error.

Parameters

 

<cnum>

Channel number of the measurement (optional).

<mnum>

Measurement number for each measurement.

<string>

String - (Not case-sensitive) Raw parameter buffer. For example, "S11".

<dataBlock>

String - (Not case-sensitive) Raw measurement data.

Examples

CALC:MEAS:DATA:RAW "S11",5.85E-002,-7.0E-002,+9.80E-003,+5.40E-002,+2.26E-002,+6.25E-002,-3.47E-002,+4.00E-002

calculate:measure:data:raw "S11",5.85E-002,-7.0E-002,+9.80E-003,+5.40E-002,+2.26E-002,+6.25E-002,-3.47E-002,+4.00E-002

Query Syntax

CALCulate<ch>:MEASure<mnum>:DATA:RAW? "<string>"

Return Type

Block data

Default

Not Applicable

CALCulate<cnum>:MEASure<mnum>:DATA:RAW:CATalog?

Applicable Models: E505xA with VNA ports

(Read-only) Returns the list of raw parameters associated with the measurement <mnum>. These are the raw parameters that are actually used by the error correction; the <mnum> measurement may not strictly depend on all of those. For example, 2 port S-parameters. If the DUT has transmission, then changing raw S11 will modify the corrected S22. If transmission is negligible, S22 is unaffected. The list is returned as strings comma separated. For unratioed parameters, the source port separator is ‘_’ instead of ‘,’ to avoid confusion in tokenization. This command applies to a Standard channel only. Application channels will return an error.

Parameters

  

<cnum>

Channel number of the measurement (optional).

<mnum>

Measurement number for each measurement.

Example

CALC:MEAS1:DATA:RAW:CAT?

Return Type

String

Default

Not Applicable

CALCulate<cnum>:MEASure<mnum>:DATA:SNP? <n>

Applicable Models: E505xA with VNA ports

(Read-only) Reads SnP data from the selected measurement. Learn more about SnP data.

This command is valid ONLY with standard S-parameter measurements.

Notes

  • This command returns SNP data without header information, and in columns, not in rows as .SnP files. This means that the data returned from this command sends all frequency data, then all Sx1 magnitude or real data, then all Sx1 phase or imaginary data, and so forth.

  • To avoid frequency rounding errors, specify FORMat:DATA <Real,64> or <ASCii, 0>

 

Parameters

  

<cnum>

Channel number of the measurement (optional).

<mnum>

Measurement number for each measurement.

<n>

Amount of data to return. If unspecified, <n> is set to 2.  The number you specify must be less than or equal to the number of available ports on the VNA.

Choose from:

1 (S1P) returns 1-Port data for the active measurement if the active measurement is a reflection parameter such as S11 or S22. The behavior is UNDEFINED if the active measurement is a transmission parameter such as an S21.

2  (S2P)  returns data for the four 2 port parameters associated with the current measurement. Default. Data that is not available is zero-filled.

3  (S3P)  returns data for the nine 3 port parameters associated with the current measurement. Data that is not available is zero-filled.

4 (S4P)   returns data for the sixteen 4 port parameters associated with the current measurement.  Data that is not available is zero-filled.

SnP data can be output using several data formatting options.  See MMEM:STORe:TRACe:FORMat:SNP.

See also MMEM:STOR <file>.<snp>

Examples

CALC:MEAS1:DATA:SNP? 1

Return Type

Depends on FORMat:DATA.

Default

Not Applicable

CALCulate<cnum>:MEASure<mnum>:DATA:SNP:PORTs? <"x,y,z".>

Applicable Models: E505xA with VNA ports

(Read-only)  Reads SNP data from the selected measurement for the specified ports. Learn more about SNP data.

This command is valid ONLY with standard S-parameter measurements.

Notes

  • This command returns SNP data without header information, and in columns, not in rows as .SnP files. This means that the data returned from this command sends all frequency data, then all Sx1 magnitude or real data, then all Sx1 phase or imaginary data, and so forth.

  • To avoid frequency rounding errors, specify FORM:DATA <Real,64> or <ASCii, 0>

  • Data that is not available is zero-filled.

  • For sweeps with a large number of data points, always follow this command with *OPC? Learn more.

 

Parameters

  

<cnum>

Channel number of the measurement (optional).

<mnum>

Measurement number for each measurement.

<"x,y,z">

Comma or space delimited port numbers for which data is requested, enclosed in quotes.

SNP data can be output using several data formatting options.  See MMEM:STORe:TRACe:FORMat:SNP.

Examples

CALC:MEAS2:DATA:SNP:PORTs? "1,2,4,5,7" 'read data for these ports

Return Type

Depends on FORMat:DATA

Default

Not Applicable

CALCulate<cnum>:MEASure<mnum>:DATA:SNP:PORTs:SAVE <"x,y,z">,<filename>[, FAST]

Applicable Models: E505xA with VNA ports

(Write-only) Saves SNP data from the selected measurement for the specified ports.  Learn more about SNP data.

  • The Normal vs Mixed Mode selection is NOT used as it is in the Choose Ports dialog. Instead, data is returned as it is displayed on the trace. If the selected measurement is Mixed Mode (balanced), then balanced data is returned. If the selected measurement is an S-parameter, then S-parameter data is returned.

  • This command is valid ONLY with the Standard measurement class (NOT applications).

  • Data that is not available is zero-filled.

  • For sweeps with a large number of data points, always follow this command with *OPC? Learn more.

Parameters

 

<cnum>

Channel number of the measurement (optional).

<mnum>

Measurement number for each measurement.

<"x,y,z">

String  Comma or space delimited port numbers for which data is requested, enclosed in quotes.

<filename>

String  Path, filename, and suffix of location to store the SNP data, enclosed in quotes.  The suffix is not checked for accuracy. If saving 2 ports, specify "filename.s2p"; If saving 4 ports, specify "filename.s4p.", and so forth.

SNP data can be output using several data formatting options.  See MMEM:STORe:TRACe:FORMat:SNP.

[, FAST]

Reduce the saving time

:SENS:CORR:CACH:MODE should be set at ON.

The correction must cover all the ports of the SNP port list.

The active measurement must be a corrected S Parameter defined by the port list for the SNP requests.  EG: "S33" is not a proper selected measurement with CALC:DATA:SNP:PORTS? <1,2>

Examples

CALC:MEAS2:DATA:SNP:PORTs:Save '1,2,4','D:\MyData.s3p';*OPC?

Return Type

Depends on FORMat:DATA

Default

Not Applicable

CALCulate<cnum>:MEASure<mnum>:DATA:X:AXiS <string>

Applicable Models: N522xB, N523xB, N524xB, M937xA, P937xA, M983xA

(Write-Read) Sets the X-axis of the selected measurement to a DC Source.  This command does not change the default setting for new traces.

Parameters

 

<cnum>

Channel number of the measurement (optional).

<mnum>

Measurement number for each measurement.

<string>

String - (Not case-sensitive) For all channels EXCEPT DIQ, choose from the following:

"Default" - The default X-axis setting for the selected measurement. For Application measurements, the X-Axis domain is set with specific commands.

"AO1" - Internal DC source #1

"AO2" - Internal DC source #2

Note: For DIQ channels, see CALC:MEAS:X:AXIS:DOMain

 

For Modulation Distortion Channels (MOD), choose from:

"SA Frequency" - SA display showing the SA frequency settings.

"Power In" - Displays input power sweep.

"Power Out" - Displays output power sweep.

"Measured Carrin" - Measured input band power.

"Measured CarrOut" - Measured output band power.

 

For Modulation Distortion Converters Channels (MODX), choose from:

"SA Freq In" - SA display showing mixer input range.

"SA Freq Out" - SA display showing mixer output range.

"Power In" - Displays input power sweep.

"Power Out" - Displays output power sweep.

"Measured Carrin" - Measured input band power.

"Measured CarrOut" - Measured output band power.

 

Examples

CALC:MEAS:DATA:X:AXIS 'Default'

calculate:measure:data:x:axis "AO1"

Query Syntax

CALCulate<ch>:MEASure<mnum>:DATA:X:AXIS?

Return Type

String

Default

"Default"

CALCulate<cnum>:MEASure<mnum>:DATA:X:AXIS:DOMain <string>

Applicable Models: N522xB, N523xB, N524xB, M983xA

(Write-Read) Sets and returns the X-Axis domain of the selected DIQ measurement.

Parameters

 

<cnum>

Channel number of the measurement (optional).

<mnum>

Measurement number for each measurement.

 

 

Choose one of these:

Then set X-Axis Source (CALC:MEAS:DATA:X:AXIS) using one of these as the argument.

"Frequency"

"F1", "F2", etc.

"Power"

Source port: "Port 1", "Port 2", etc.

"Phase"

Source port: "Port 1", "Port 2", etc.

"DC"

DC Source:"AO1", "AO2"

"Points"

"Points"

Example

1. CALC:MEAS:DATA:X:AXIS:DOM "Power"

2. CALC:MEAS:DATA:X:AXIS "Port 1"

Query Syntax

CALCulate<ch>:MEASure<mnum>:DATA:X:AXIS:DOMain?

Return Type

String

Default

CALC:MEAS:DATA:X:AXIS:DOMain:  "Frequency"

CALC:MEAS:DATA:X:AXIS:  "F1"

CALCulate<ch>:MEASure<mnum>:DATA:X:AXIS:FIXed:PARameter <string>

Applicable Models: N524xB models with Option S93070xB

(Write-Read) Sets the X-axis fixed parameter for a power sweep measurement in a Modulation Distortion channel.

Parameters

 

<ch>

Channel number of the measurement (optional).

<mnum>

Measurement number for each measurement.

<string>

String - (Not case-sensitive) For Modulation Distortion Channels  (MOD), choose from:

"SA Frequency" - SA display showing the SA frequency settings.

 

For Modulation Distortion Converters Channels  (MODX), choose from:

"SA Freq In" - SA display showing mixer input range.

"SA Freq Out" - SA display showing mixer output range.

 

Examples

CALC:MEAS2:DATA:X:AXIS:FIX:PAR "SA Frequency"

calculate:measure2:data:x:axis:fixed:parameter "SA Freq In"

Query Syntax

CALCulate<ch>:MEASure<mnum>:DATA:X:AXIS:FIXed:PARameter?

Return Type

String

Default

"SA Frequency"

CALCulate<ch>:MEASure<mnum>:DATA:X:AXIS:FIXed:PARameter:VALue <num>

Applicable Models: N524xB models with Option S93070xB

(Write-Read) Sets the X-axis fixed parameter spectrum analyzer frequency value for a power sweep measurement in a Modulation Distortion channel.

Parameters

 

<ch>

Channel number of the measurement (optional).

<mnum>

Measurement number for each measurement.

<num>

Fixed parameter value.

Examples

CALC:MEAS2:DATA:X:AXIS:FIX:PAR:VAL 1.5e9

calculate:measure2:data:x:axis:fixed:parameter:value 1.5e9

Query Syntax

CALCulate<ch>:MEASure<mnum>:DATA:X:AXIS:FIXed:PARameter:VALue?

Return Type

Numeric

Default

Not Applicable

CALCulate<cnum>:MEASure<mnum>:DATA:X[:VALues]?

Applicable Models: N522xB, N523xB, N524xB, M937xA, P937xA

(Read-only) Returns the stimulus values for the selected measurement in the current units. You can select one measurement for each channel using Calc:Par:MNUM or Calc:Par:Select.  Learn more.

This command can be used for all Measurement Classes.

Note: To avoid frequency rounding errors, specify FORM:DATA <Real,64> or <ASCii, 0>

Parameters

 

<cnum>

Channel number of the measurement (optional).

<mnum>

Measurement number for each measurement.

Examples

1. Calc:Par:Sel "MyGCATrace"
2. CALC:MEAS:DATA:X?

Return Type

Depends on FORM:DATA command

Default

Not applicable