FETCh:RFCHannel:EVMQpsk?

Last Updated: August 29, 2007

These commands return results for the QPSK EVM measurement in the RF Channel (RFCH) measurement suite.

• FETCh:RFCHannel:EVMQpsk[:PARTial]?

• FETCh:RFCHannel:EVMQpsk:ALL?

For more information on the conventions used in the programming examples click here.

FETCh:RFCHannel:EVMQpsk[:PARTial]?

Queries the integrity indicator, EVM RMS, EVM peak, frequency error, origin offset, phase error and magnitude error.

If the multi-measurement state is on, the results represent the average of a number of EVM QPSK measurements. Multi-measurement state, by default, is off. To set up multi-measurements, see SETup:RFCHannel:COUNt:NUMBer[?].  

Query Range:

• RF Channel measurement suite integrity: See Measurement Integrity Indicator.

• EVM RMS: <nr3> in % and 9.91 E+37 (NAN)

• EVM Peak: <nr3> in % and 9.91 E+37 (NAN)

• Frequency Error: <nr3> in Hz and 9.91 E+37 (NAN)

• Origin Offset: <nr3> in dB and 9.91 E+37 (NAN)

• Phase Error: <nr3> in degrees and 9.91 E+37 (NAN)

• Magnitude Error: <nr3> in % and 9.91 E+37 (NAN)

Test Set Requirements: E6601A WCTS Program Version A.05 and above

Example:

' Query the integrity indicator, EVM RMS, EVM peak, frequency error, origin offset, phase error and magnitude error.

TestSet.WriteString("FETCh:RFCHannel:EVMQpsk?")

FETCh:RFCHannel:EVMQpsk:ALL?

Queries the integrity indicator, minimum, maximum, average and standard deviation of the EVM RMS, EVM peak, frequency error, origin offset, phase error and the magnitude error. To set the number of measurements used to gather statistics, use the command SETup:RFCHannel:COUNt:NUMBer[?].  

Query Range:

• RF Channel measurement suite integrity: See Measurement Integrity Indicator.

• EVM RMS Minimum: <nr3> in % and 9.91 E+37 (NAN)

• EVM RMS Maximum: <nr3> in % and 9.91 E+37 (NAN)

• EVM RMS Average: <nr3> in % and 9.91 E+37 (NAN)

• EVM RMS Standard Deviation: <nr3> in % and 9.91 E+37 (NAN)

• EVM Peak Minimum: <nr3> in % and 9.91 E+37 (NAN)

• EVM Peak Maximum: <nr3> in % and 9.91 E+37 (NAN)

• EVM Peak Average: <nr3> in % and 9.91 E+37 (NAN)

• EVM Peak Standard Deviation: <nr3> in % and 9.91 E+37 (NAN)

• Frequency Error Minimum: <nr3> in Hz and 9.91 E+37 (NAN)

• Frequency Error Maximum: <nr3> in Hz and 9.91 E+37 (NAN)

• Frequency Error Average: <nr3> in Hz and 9.91 E+37 (NAN)

• Frequency Error Standard Deviation: <nr3> in Hz and 9.91 E+37 (NAN)

• Origin Offset Minimum: <nr3> in dB and 9.91 E+37 (NAN)

• Origin Offset Maximum: <nr3> in dB and 9.91 E+37 (NAN)

• Origin Offset Average: <nr3> in dB and 9.91 E+37 (NAN)

• Origin Offset Standard Deviation: <nr3> in dB and 9.91 E+37 (NAN)

• Phase Error Minimum: <nr3> in degrees and 9.91 E+37 (NAN)

• Phase Error Maximum: <nr3> in degrees  and 9.91 E+37 (NAN)

• Phase Error Average: <nr3> in degrees  and 9.91 E+37 (NAN)

• Phase Error Standard Deviation: <nr3> in degrees and 9.91 E+37 (NAN)

• Magnitude Error Minimum: <nr3> in % and 9.91 E+37 (NAN)

• Magnitude Error Maximum: <nr3> in % and 9.91 E+37 (NAN)

• Magnitude Error Average: <nr3> in % and 9.91 E+37 (NAN)

• Magnitude Error Standard Deviation: <nr3> in %? and 9.91 E+37 (NAN)

Test Set Requirements: E6601A WCTS Program Version A.05 and above

Example:

' Query all the QPSK EVM measurement results.

TestSet.WriteString("FETCh:RFCHannel:EVMQpsk:ALL?")