FETCh:EVMQpsk

Function

Queries the QPSK EVM measurements.

Measurement results are returned in the following order: integrity, EVM maximum, frequency error worst case, origin offset maximum, phase error maximum, magnitude error maximum, peak EVM maximum.

Query

Integrity

• Range: 0 to 16

• Resolution: 1

EVM Maximum

• Range: 0 to 99%, 9.91 E+37

• Resolution: 0.1

Frequency Error worst case

• Range-99.99 to 99.99 kHz, 9.91 E+37

• Resolution: 0.1

Origin Offset Maximum

• Range: -99 to 0 dB, 9.91 E+37

• Resolution: 0.1

Phase Error Maximum

• Range: 0 to 180 degrees, 9.91 E+37

• Resolution: 0.1

Magnitude Error Maximum

• Range: 0 to 99%, 9.91 E+37

• Resolution: 0.1

Peak EVM Maximum

• Range: 0 to 99%, 9.91 E+37

• Resolution: 0.1

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk?" 

Function

Queries the maximum EVM.

Query

Range: 0 to 99%, 9.91 E+37

Resolution: 0.1

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk:EVM?"
! Returns maximum EVM.

Function

Queries the EVM measurements.

Results are returned in the following order: minimum, maximum, average, standard deviation error vector magnitude.

Query

Minimum EVM

• Range: 0 to 99%, 9.91 E+37

• Resolution: 0.1

Maximum EVM

• Range: 0 to 99%, 9.91 E+37

• Resolution: 0.1

Average EVM

• Range: 0 to 99%, 9.91 E+37

• Resolution: 0.1

Standard Deviation EVM

• Range: 0 to 99%, 9.91 E+37

• Resolution: 0.01

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk:EVM:ALL?"
! Returns all EVM measurement results.

Function

Queries the average EVM.

Query

Range: 0 to 99%, 9.91 E+37

Resolution: 0.1

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk:EVM:AVERage?"
! Returns average EVM.

Function

Queries the minimum EVM.

Query

Range: 0 to 99%, 9.91 E+37

Resolution: 0.1

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk:EVM:MINimum?"
! Returns mininum EVM.

Function

Queries the QPSK EVM measurement results and returns the following, depending upon which mnemonic is sent at the end of the command string:

• [:MAXimum] - returns the maximum peak EVM result when Multi-Measurement Count is on or peak EVM when Multi-Measurement Count = Off .
• :ALL - returns the minimum, maximum, average and standard deviation peak EVM results when Multi-Measurement Count is on (it returns peak EVM, peak EVM, peak EVM and zero when Multi-Measurement Count is off).
• :AVERage - returns the average peak EVM result when Multi-Measurement Count is on (it returns peak EVM when Multi-Measurement Count is off).
• :MINimum - returns the minimum peak EVM result when Multi-Measurement Count is on (it returns peak EVM when Multi-Measurement Count is off).
• :SDEViation - returns the standard deviation of the peak EVM results when Multi-Measurement Count is on (it returns zero when Multi-Measurement Count is off).

Query

Range:

• Peak EVM: 0 to 99.0%, 9.91E+37
• Standard deviation: 0 to 99.00%, 9.91E+37

Resolution:

• Peak EVM: 0.1%
• Standard deviation: 0.01%

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk:EVM:PEAK?"
! Returns peak EVM (or maximum peak EVM if multi-measurement count is on)

 
OUTPUT 714;"FETCh:EVMQpsk:EVM:PEAK:ALL?"
! Returns minimum, maximum, average and standard deviation peak EVM when multi-measurement
! count is on (it returns peak EVM, peak EVM, peak EVM and zero when multi-measurement
! count is off).

Function

Queries the standard deviation of results for EVM measurements.

Query

Range: 0 to 99%, 9.91 E+37

Resolution: 0.01

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk:EVM:SDEViation?"
! Returns standard deviation EVM.

Function

Queries the worst case frequency error. (The test set returns either the Minimum or Maximum Frequency Error result, whichever is furthest from zero).

Query

Range: -99 to 99 kHz, 9.91 E+37

Resolution: 0.1

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk:FERRor?"
! Returns worst case frequency error.

Function

Queries the frequency error measurements.

Results are returned in the following order: minimum, maximum, average, standard deviation and worst case frequency error.

Query

Minimum Frequency Error

• Range: -99 to 99 kHz, 9.91 E+37

• Resolution: 0.1

Maximum Frequency Error

• Range: -99 to 99 kHz, 9.91 E+37

• Resolution: 0.1

Average Frequency Error

• Range: -99 to 99 kHz, 9.91 E+37

• Resolution: 0.1

Standard Deviation Frequency Error

• Range: -99 to 99 kHz, 9.91 E+37

• Resolution: 0.01

Worst Case Frequency Error

• Range: -99 to 99 kHz, 9.91 E+37

• Resolution: 0.1

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk:FERRor:ALL?" 
! Returns mininum, maximum, average,
! standard deviation and worst case frequency error.

Function

Queries the average frequency error.

Query

Range: -99 to 99 kHz, 9.91 E+37

Resolution: 0.1

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk:FERRor:AVERage?"
! Returns average frequency error.

Function

Queries the average frequency error.

Query

Range: -99 to 99 kHz, 9.91 E+37

Resolution: 0.1

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk:FERRor:MAXimum?"
! Returns maximum frequency error.

Function

Queries the minimum frequency error.

Query

Range: -99 to 99 kHz, 9.91 E+37

Resolution: 0.1

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk:FERRor:MINimum?"
! Returns minimum frequency error.

Function

Queries the standard deviation of frequency error measurements.

Query

Range: 0 to 99 kHz, 9.91 E+37

Resolution: 0.01

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk:FERRor:SDEViation?"
! Returns standard deviation frequency error.

Function

Queries the intermediate count of measurements completed in a multi-measurement.

Query

Range: 0 to 999

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk:ICOunt?" 

Function

Queries the measurement integrity indicator for the last waveform quality measurement completed.

Zero indicates a normal measurement. See Integrity Indicator for information about non-zero integrity results.

Query

Range: 0 through 23

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk:INTegrity?" 
!Queries the integrity indicator for the channel channel power results.

Function

Queries the average magnitude error.

Query

Range: 0 to 99%

Resolution: 0.1

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk:MERRor?"
! Returns maximum magnitude error.

Function

Queries the magnitude error measurements.

Results are returned in the following order: minimum, maximum, average, standard deviation magnitude error.

Query

Minimum Magnitude Error

• Range: 0 to 99%, 9.91 E+37

• Resolution: 0.1

Maximum Magnitude Error

• Range: 0 to 99%, 9.91 E+37

• Resolution: 0.1

Average Magnitude Error

• Range: 0 to 99%, 9.91 E+37

• Resolution: 0.1

Standard Deviation Magnitude Error

• Range: 0 to 99%, 9.91 E+37

• Resolution: 0.01

Requirements

Programming Example

 
OUTPUT 714;"FETCh::EVMQpsk:MERRor:ALL?" 
! Returns mininum, maximum, average, and
! standard deviation magnitude error.

Function

Queries the average magnitude error.

Query

Range: 0 to 99%

Resolution: 0.1

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk:MERRor:AVERage?"
! Returns average magnitude error.

Function

Queries the minimum magnitude error.

Query

Range: 0 to 99%

Resolution: 0.1

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk:MERRor:MINimum?"
! Returns minimum magnitude error.

Function

Queries the standard deviation of magnitude error measurements.

Query

Range: 0 to 99%

Resolution: 0.01

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk:MERRor:SDEViation?"
! Returns standard deviation magnitude error.

Function

Queries the average origin offset.

Query

Range:-99 to 0 dB, 9.91 E+37

Resolution: 0.1

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk:OOFFset?"
! Returns maximum origin offset.

Function

Queries the origin offset measurements.

Results are returned in the following order: minimum, maximum, average, standard deviation origin offset.

Query

Minimum Origin Offset

• Range: -99 to 0 dB, 9.91 E+37

• Resolution: 0.1

Maximum Origin Offset

• Range: -99 to 0 dB, 9.91 E+37

• Resolution: 0.1

Average Origin Offset

• Range: -99 to 0 dB, 9.91 E+37

• Resolution: 0.1

Standard Deviation Origin Offset

• Range: 0 to 99 dB, 9.91 E+37

• Resolution: 0.01

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk:OOFFset:ALL?" 
! Returns mininum, maximum, average, and
! standard deviation origin offset.

Function

Queries the average origin offset.

Query

Range: -99 to 0 dB, 9.91 E+37

Resolution: 0.1

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk:OOFFset:AVERage?"
! Returns average origin offset.

Function

Queries the minimum origin offset.

Query

Range:-99 to 0 dB, 9.91 E+37

Resolution: 0.1

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk:OOFFset:MINimum?"
! Returns minimum origin offset.

Function

Queries the standard deviation of results for origin offset measurements.

Query

Range: 0 to 99 dB, 9.91 E+37

Resolution: 0.01

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk:OOFFset:SDEViation?"
! Returns standard deviation origin offset.

Function

Queries the maximum phase error measurement.

Query

Range: 0 to 180 degrees, 9.91 E+37

Resolution: 0.1

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk:PERRor?"
! Returns maximum phase error.

Function

Queries the phase error measurements.

Results are returned in the following order: minimum, maximum, average, standard deviation phase error.

Query

Minimum Phase Error

• Range: 0 to 180 degrees, 9.91 E+37

• Resolution: 0.1

Maximum Phase Error

• Range: 0 to 180 degrees, 9.91 E+37

• Resolution: 0.1

Average Phase Error

• Range: 0 to 180 degrees, 9.91 E+37

• Resolution: 0.1

Standard Deviation Phase Error

• Range: 0 to 180 degrees, 9.91 E+37

• Resolution: 0.01

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk:PERRor:ALL?" 
! Returns mininum, maximum, average, and
! standard deviation phase error.

Function

Queries the average phase error.

Query

Range: 0 to 180 degrees, 9.91 E+37

Resolution: 0.1

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk:PERRor:AVERage?"
! Returns average phase error.

Function

Queries the minimum phase error.

Query

Range: 0 to 180 degrees, 9.91 E+37

Resolution: 0.1

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk:PERRor:MINimum?"
! Returns minimum phase error.

Function

Queries the standard deviation of results for phase error measurements.

Query

Range: 0 to 180 degrees, 9.91 E+37

Resolution: 0.01

Requirements

Programming Example

 
OUTPUT 714;"FETCh:EVMQpsk:PERRor:SDEViation?"
! Returns standard deviation phase error.