2201R Mobile Tester SCPI Reference Guide
Chapter 10 Measurement commands
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:MEASure:EGPRs:ARRay:RFTX:ALL
Syntax
:MEASure:EGPRs:ARRay:RFTX:ALL <int1>>
Parameters
<int1> is an integer.
The minimum value for <int1> is 0, the maximum value is 100. The default value for <int1> is 0.
Description
Performs a sequential measurement of the most important EGPRS RF TX tests for a specific number of times (set with
the <int1> parameter). To read out the entire measurement results array, use the :FETCh:EGPRs:RFTX:ALL command.
The RF TX tests performed by this command are:
ERMS, the error vector magnitude rms-averaged over a burst. EVM is a relative value and shown as a percentage,
EPEAk, the maximum error vector magnitude within a burst. EVM is indicated per cent,
ENFTh, the error vector magnitude that is not exceeded by 95% of the symbols of a burst. The 95% EVM is shown in %,
EOFFset, the origin offset indicates the accuracy of the i/Q modulators DC setup; it is usually an undesired leakage
produced due to a DC offset in the phones I/Q modulator. It is measured in dBc,
FREQuency means the frequency error of the mobile under test,
LENGth, the length of the burst in microseconds,
UTIMe stands for the timing error of the mobile under test in microseconds (taking the ordered timing advance into
account),
POWer is the mobile RF output power level in dBm,
TEMPlate indicates whether the power-time template has been violated by a burst or not,
CORNer gives the RF power level in dBm at eight pre-defined positions of a burst.
Note: Please keep in mind that the start of a new RF TX test always terminates the preceding one instantly. For further
details regarding group measurements and their specific advantages, refer to section :MEAS:...:GROup.
For ARRay measurements in general, check with section :MEASure:...:ARRay. For a further description of the single
measurements, see description of the related commands below.
Query
The query form of this command performs the measurements and - after all measurements have been completed
and all measurement results obtained - delivers a string, containing (17 * <int1>) measurement result values. The
single measurement result values are separated by commas. The order and type of these measurement result values
delivered back is as follows:
1. ERMS, the error vector magnitude rms-averaged over a burst. EVM is a relative value and shown as a percentage,
2. EPEAk, the maximum error vector magnitude within a burst. EVM is indicated per cent,
3. ENFTh, the error vector magnitude that is not exceeded by 95% of the symbols of a burst. The 95% EVM is shown
in %,
4. EOFFset, the origin offset indicates the accuracy of the i/Q modulators DC setup; it is usually an undesired leakage
produced due to a DC offset in the phones I/Q modulator. It is measured in dBc,
5. FREQuency, floating point real number representing the mobile frequency error,
6. LENGth, floating point real number representing the length of the burst in microseconds,
7. UTIMe, floating point real number representing the timing error of the mobile under test in microseconds (taking
the ordered timing advance into account),
8. POWer, floating point real number representing the mobile RF output power level in dBm,
9. TEMPlate, boolean number. A 0 indicates that the power-time template (PTT) was not violated by the last burst
measured, while a 1 means that the burst did violate the PTT.
10...17. CORNer, eight floating point real numbers, representing the RF power level in dBm at eight predefined
positions of a burst.
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