Last Updated: August 29, 2007
These commands return results for the Power versus Time measurement in the Power and Modulation Quality (PMOD) measurement suite.
For more information on the conventions used in the programming examples click here.
Queries the power versus time trace results for all bursts in the multislot configuration.
Query Range:
Power and modulation quality measurement suite integrity: See Measurement Integrity Indicator.
Number of points: <nr1>
Position of the middle of bit0 for burst 1 in the trace: <nr3> or 9.91 E+37 (NAN). The units are sample periods, not seconds.
Position of the middle of bit0 for burst 2 in the trace: <nr3> or 9.91 E+37 (NAN). The units are sample periods, not seconds.
Time increment between samples: <nr3> in s and 9.91 E+37 (NAN)
Absolute dBm reference power for burst 1: <nr3> in dBm and 9.91 E+37 (NAN)
Absolute dBm reference power for burst 2: <nr3> in dBm and 9.91 E+37 (NAN)
Trace array: Power values relative to the current setting of the Tx power reference. These values are returned as a comma separated list in the range of <nr3> and 9.91 E+37 (NAN)
Test Set Requirements: E6601A WCTS Program Version A.01 and above
Example:
' Query the power versus time trace results for all bursts in the multislot configuration.
TestSet.WriteString("FETCh:PMODulation:PVTime:MBURsts:TRACe?")
Queries the integrity indicator, and maximum power levels from a number of multi-measurements, at each user-settable time offset that is currently turned on for the burst of the multislot configuration that you specify. Power levels are relative to the power versus time carrier power measurement.
The SETup:PMODulation:PVTime[:BURSt([1]|2)]:TIME[:OFFSet][?] command sets up the number of offsets that are turned on and their time values. The SETup:PMODulation:PVTime[:BURSt([1]|2)]:TIME:POINts? command queries the number of offset points that are turned on, indicating the number of values to expect when you send this command.
Query Range:
Power and modulation quality measurement suite integrity: See Measurement Integrity Indicator.
Maximum power levels: <nr3> in dBc and 9.91 E+37 (NAN)
Test Set Requirements: E6601A WCTS Program Version A.01 and above
Example:
' Query the power versus time maximum power levels for burst 1.
TestSet.WriteString("FETCh:PMODulation:PVTime:BURSt1:POWer?")
Queries the integrity indicator, power versus time measurement mask pass/fail indicator, and the following worst case margins:
Upper limit margin time
Upper limit margin result
Lower limit margin time
Lower limit margin result
Margin time is the point in time, relative to burst bit 0, that corresponds with the worst case measurement result (the measurement with the least difference between measured power and the power level boundary specified by the power versus time mask).
Margin result is the difference between the measured power and the power level boundary specified by the power versus time mask.
Query Range:
Power and modulation quality measurement suite integrity: See Measurement Integrity Indicator.
Power versus time mask pass/fail: 0 (pass) or 1 (fail)
Power versus time upper limit margin worst case result: <nr3> in dB and 9.91 E+37 (NAN)
Power versus time upper limit margin time worst case result: <nr3> in s and 9.91 E+37 (NAN)
Power versus time lower limit margin worst case result: <nr3> in dB and 9.91 E+37 (NAN)
Power versus time lower limit margin time worst case result: <nr3> in s and 9.91 E+37 (NAN)
Test Set Requirements: E6601A WCTS Program Version A.01 and above
Example:
' Query the power versus time measurement mask pass/fail indicator and the worst case margins.
TestSet.WriteString("FETCh:PMODulation:PVTime:MASK?")
Queries the mask error code for the entire multislot configuration. This error code indicates which parts, if any, are causing the multislot configuration to fail the power versus time mask.
The error codes are:
0 = No Mask Failures
1 (bit 1) = Rising Edge Failure
2 (bit 2) = Falling Edge Failure
4 (bit 3) = Active Part of First Burst
8 (bit 4) = Guard Period
16 (bit 5) = Active Part of Second Burst
The above list shows values which can be returned if any single error causes the multislot configuration to fail the mask. (For example, if 4 is returned the failure is due to the active part of the first burst. Note that the value returned could indicate a combination of errors which is causing the multislot configuration to fail. For example, if 9 is returned, this indicates that a rising edge failure and the first guard period has caused the failure.
Query Range: 0 to 31
Test Set Requirements: E6601A WCTS Program Version A.01 and above
Example:
' Query the mask error code for the entire multislot configuration.
TestSet.WriteString("FETCh:PMODulation:PVTime:MASK:FAIL:SEGMent?")
Queries the power versus time trace results for the specified burst in the multislot configuration.
Query Range:
Power and modulation quality measurement suite integrity: See Measurement Integrity Indicator.
Number of points: <nr1>
Position of the middle of bit0 for the specified burst in the trace: <nr3> or 9.91 E+37 (NAN). The units are sample periods, not seconds.
Time increment between samples: <nr3> in s and 9.91 E+37 (NAN)
Absolute dBm reference power for the specified burst: <nr3> in dBm and 9.91 E+37 (NAN)
Trace array: Power values relative to the current setting of the Tx power reference. <nr3> array in dB and 9.91 E+37 (NAN)
Test Set Requirements: E6601A WCTS Program Version A.01 and above
Example:
' Query the power versus time trace results for burst 1.
TestSet.WriteString("FETCh:PMODulation:PVTime:BURSt1:TRACe?")