R&S
®
CMW 500 Remote Control
Control of the Instrument
Operating Manual 1202.3986.32 – 03 83
measurements. Commands for the different measurement have a similar structure and
syntax.
The following topics describe the principles of measurement control:
Measurement states and measurement control commands
INITiate... command
ABORt... command
STOP... command
Measurement substates
Measurement contexts
Measurement control commands affect the entire measurement context, which may
include several views (see Measurement Contexts and Views). This means that the
measurement states of all views within the same context are always equal. In contrast,
the results of each view can be retrieved separately.
5.4.1.1 Measurement States and Measurement Control Commands
Measurement control commands are used to switch over between the following main
measurement states:
OFF Measurement switched off, no resources allocated, no results available
(when entered after STOP...). OFF corresponds to the SCPI trigger state
IDLE.
RDY Measurement has been terminated, valid results may be available. RDY
corresponds to the SCPI trigger state IDLE.
RUN Measurement running (after INITiate..., READ...), synchronization
pending or adjusted, resources active or queued (see Measurement
Substates). RUN corresponds to the SCPI trigger state INITiated.
Querying the main measurement state
The main measurement state can be queried using
FETCh:<FWA>:<context>:STATe? where <FWA> denotes the firmware application
and <context> is to be replaced by the name of the measurement.
Example: FETCh:GPRF:MEASurement<i>:POWer:STATe? (possible response:
RDY).
The relationship between measurement states and measurement control commands is
shown in the following diagram:
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