Last Updated: August 29, 2007
These commands are only applicable with a PAvT license.
These commands return results for the Phase and Amplitude versus Time measurement.
For more information on the conventions used in the programming examples click here.
Queries the Phase and Amplitude versus Time measurement and returns; integrity indicator, power, phase, and frequency error. The number of triplet results returned in this array is set by SETup:PAVTime:STEP[:POINts][?] and can be queried using FETCh:PAVTime:STEP:COUNt?.
When no valid results are available, the integrity indicator and three NANs are returned.
Query Range:
Phase and Amplitude versus Time measurement integrity: See Measurement Integrity Indicator.
Power: <nr3> in dBm for the first result and dB for all others, and 9.91 E+37 (NAN)
Phase: <nr3> in degrees and 9.91 E+37 (NAN)
Frequency Error: <nr3> in Hz and 9.91 E+37 (NAN)
Test Set Requirements: E6601A WCTS Program Version A.03 and above
Example:
' Query the PAVT measurement.
TestSet.WriteString("FETCh:PAVTime?")
Queries the frequency measurement array of the Phase and Amplitude versus Time measurement. The first result in the array is the absolute frequency error and all following results are frequencies relative to the initial absolute frequency.
The number of results returned in this array is set by SETup:PAVTime:STEP[:POINts][?] and can be queried using FETCh:PAVTime:STEP:COUNt?.
When no valid results are available, the integrity indicator and one NAN is returned.
Query Range:
Phase and Amplitude versus Time measurement integrity: See Measurement Integrity Indicator.
Frequency Error: <nr3> in Hz and 9.91 E+37 (NAN)
Test Set Requirements: E6601A WCTS Program Version A.03 and above
Example:
' Query the PAVT frequency error measurement.
TestSet.WriteString("FETCh:PAVTime:FERRor?")
Queries the intermediate count of Phase and Amplitude versus Time multi-measurements completed.
Query Range: 0 to 999
Test Set Requirements: E6601A WCTS Program Version A.02 and above
Example:
' Queries the intermediate total number of measurements completed for the Power and Modulation Quality measurement suite.
TestSet.WriteString("FETCh:PMODulation:ICOunt?")
Queries the integrity indicator for the last Phase and Amplitude versus Time measurement completed. Zero indicates normal.
For non-zero integrity indicators, refer to Measurement Integrity Indicator.
Query Range: See Measurement Integrity Indicator.
Test Set Requirements: E6601A WCTS Program Version A.03 and above
Example:
' Query the integrity indicator for the last PAVT measurement completed.
TestSet.WriteString("FETCh:PAVTime:INTegrity?")
Queries the phase measurement array of the Phase and Amplitude versus Time measurement. The first result in the array is 0 degrees and all following results are relative to 0 degrees.
The number of results returned in this array is set by SETup:PAVTime:STEP[:POINts][?] and can be queried using FETCh:PAVTime:STEP:COUNt?.
When no valid results are available, the integrity indicator and one NAN is returned.
Query Range:
Phase and Amplitude versus Time measurement integrity: See Measurement Integrity Indicator.
Phase: <nr3> in degrees and 9.91 E+37 (NAN)
Test Set Requirements: E6601A WCTS Program Version A.03 and above
Example:
' Query the PAVT phase measurement.
TestSet.WriteString("FETCh:PAVTime:PHASe?")
Queries the power measurement array of the Phase and Amplitude versus Time measurement. The first result in the array is the absolute power measurement in dBm and all following results are power measurements in dB relative to the initial absolute power value.
The number of results returned in this array is set by SETup:PAVTime:STEP[:POINts][?] and can be queried using FETCh:PAVTime:STEP:COUNt?.
When no valid results are available, the integrity indicator and one NAN is returned.
Query Range:
Phase and Amplitude versus Time measurement integrity: See Measurement Integrity Indicator.
Power: <nr3> in dBm for the first result and dB for all others, and 9.91 E+37 (NAN)
Test Set Requirements: E6601A WCTS Program Version A.03 and above
Example:
' Query the PAVT power measurement.
TestSet.WriteString("FETCh:PAVTime:POWer?")
Queries the total number of steps actually measured. The value returned may be different from SETup:PAVTime:STEP:COUNt?. This setup query always reports the number of values that you have set up using the SETup:PAVTime:STEP[:POINts][?] command. However this FETCh query reports the number of steps that are actually returned.
When no results are available this query returns "1". This indicates that:
an integrity result and a single result of NAN will be returned for each of the following queries: FETCh:PAVTime:FERRor?, FETCh:PAVTime:PHASe? and FETCh:PAVTime:POWer?.
an integrity result and three NANs is returned for FETCh:PAVTime[:PARTial]?.
Query Range: 1 to 512
Test Set Requirements: E6601A WCTS Program Version A.03 and above
Example:
' Query the number of steps measured in the PAVT measurement.
TestSet.WriteString("FETCh:PAVTime:STEP:COUNt?")