2201R Mobile Tester SCPI Reference Guide
Chapter 10 Measurement commands
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:MEASure:GSM[:CONTinuous]:RFTX:ALL
Syntax
:MEASure:GSM[:CONTinuous]:RFTX:ALL
Parameters
There are no parameters.
Description
Starts a continuous measurement of the most important RF TX tests. To read out the latest measurement results, 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,
CORNer gives the RF power level in dBm at eight predefined positions of a burst,
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 a further description of the single measurements, see description of the related commands below.
Query
The query form of this command starts the measurements and - after all 19 measurements have been completed and
all measurement results obtained - delivers a string, containing 19 measurement result values, separated with
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.
Note: For a further description of the single measurements, see description of the related commands below.
Example
:MEASure:GSM:CONTinuous:RFTX:ALL?
In this case, all relevant RF TX measurements are performed in a sequence. As soon as all measurements have been
completed and all measurement results obtained, a string is delivered back containing 19 measurement results:
"5.13,1.94,-2.22,557.0,0.1,11.22,0,-72.18, -61.91,-20.91,-0.05,-0.04,-17.97,-56.60, -73.95,-0.05,-0.01,0.02,-0.05".
