2201R Mobile Tester SCPI Reference Guide
Chapter 10 Measurement commands
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:MEASure:GSM:ARRay:RFTX:ALL
Syntax
:MEASure:GSM: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 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:GSM:RFTX:ALL command.
The RF TX tests performed by this command are:
PPEAk, the peak phase error measurement,
PRMS, the root-mean square valued phase error measurement,
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,
FLATness gives an indication whether the mobile RF output power is constant during the active part of the burst.
Notes:
- 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 :MEASure:...:GROup.
- 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 (19 * 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. PPEAk, floating point real number, representing the result of the peak phase error measurement,
2. PRMS, floating point real number representing the result of the root-mean square valued phase error measurement,
3. FREQuency, floating point real number representing the mobile frequency error,
4. LENGth, floating point real number representing the length of the burst in microseconds,
5. UTIMe, floating point real number representing the timing error of the mobile under test in microseconds (taking
the ordered timing advance into account),
6. POWer, floating point real number representing the mobile RF output power level in dBm,
7. 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.
8...15. CORNer, eight floating point real numbers, representing the RF power level in dBm at eight predefined positions
of a burst.
16...19. FLATness, four floating point real numbers, representing the absolute minimum and maximum relative RF
power levels of the mobile and their positions during the active part of the burst.
Example
:MEASure:GSM:ARRay:RFTX:ALL 2
:FETCh:GSM:RFTX:ALL?
In this case, the sequence of the most important RF TX measurements is performed twice. All 38 measurement result
values are kept in an internal memory until they are read out with the FETCh command. After the internal memory
has been read out, it is cleared.
Note: A subsequent :FETCh command (without any previous start of a measurement) therefore tries to read
non-existent measurement data and thus create a timeout error.