WILLTEK 4400 Mobile Phone Tester Series, Руководство пользователя

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Chapter 8 SCPI
The Measurement subsystems
4460 GSM System Option and 4468 EDGE System Option Version 12.20
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The CALL subsystem
This subsystem contains commands
– for call setup and handling procedures and
– to read out the measurement report, generated by the mobile.
The Measurement subsystems
The 4400 provides the following measurement subsystems:
The MEASure subsystem – This subsystem provides the commands for all kinds
of measurements: Single-shot as well as series of measurements, measurements
of single parameters as well as of groups of parameters.
The FETCh subsystem – To read out the lastest measurement result of a specific
parameter or a group of parameters.
The CALCulate Subsystem – All kinds of statistic evaluations and checks of
measurement results against predefined limits.
The MEASure subsystem
The MEASure subsystem is probably the most important SCPI command
subsystem of the 4400. There you will find all commands to acquire measure-
ment results of the mobile under test.
Measurements can be taken as one-shot measurements or as series of measure-
ments:
NOTE
FETCh requires that a measurement is started first, using the MEASure com-
mands.
NOTE
FETCh will neither start nor terminate continuous measurements.
Type of
measure-
ment Related
command
element Short description
One-shot [:CONTinuous] Actually
:CONT
starts a measurement,
that will be performed continuously.
Single measurement results can be read
out using the related
:FETCh
com-
mands.
Thus several measurements can be
started (where those measurements are
started first that take the longest time,
like e.g. BER).