Remote Control
R&S
®
CMW500
139
User Manual 1173.9463.02 ─ 02
Command synchronization
Before you use the generator signal, use the query
SOURce:<Application>:GENerator<i>:STATe?
to ensure that the generator has
reached its
ON
state and that the generator signal is available.
SOURce:<Application>:GENerator<i>:STATe OFF
Switches the generator off, releases the hardware resources for other generators, and
changes to the generator state "OFF". If the generator is already turned off the command
has no effect.
6.4.2 Measurement Control
The R&S CMW500 provides a variety of measurements (also termed measurement con-
texts) for each of the supported network standards or general purpose applications. All
measurements are identified by a fourth level mnemonic and controlled in an analogous
way. The benefit of this structure lies in the close analogy of all measurements. Com-
mands for the different measurements have a similar structure and syntax.
The following topics describe the principles of measurement control.
Measurement contexts
Measurement control commands affect the entire measurement context, which may
include several views (see
Measurement Contexts and Views
measurement states of all views within the same context are always equal. In contrast,
the results of each view can be retrieved separately.
6.4.2.1
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 cor-
responds to the SCPI trigger state IDLE.
●
RUN
: Measurement running (after
INITiate..., READ...
), synchronization
pending or adjusted, resources active or queued (see
). 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:POWer:STATe?
(possible response: RDY).
Control of the Instrument
