Rohde & Schwarz CMW500 1201.0002K50 - R&S CMW Software and Command Structure; General Command Structure

Remote Control
R&S
®
CMW500
134User Manual 1173.9463.02 ─ 02
Element Usage
# The hash sign # introduces block data.
Block: #21312
A "white space" (ASCII-Code 0 to 9, 11 to 32 decimal, e.g. blank) separates header and
parameter.
6.2.4.6 Use of SCPI Subsystems
The structure of the instrument-control commands implemented by the R&S CMW500 is
described in sections General Command Structure and Control of the Instrument. Due
to this structure, some SCPI subsystems are used in a specific manner. The following list
gives an overview.
Command Usage
ABORt...
Stop measurement, release resources; see ABORt:<Application>:MEA-
Surement<i>
CONFigure...
Specify measurement settings
FETCh...
Retrieve measurement results (running measurement; see FETCh...? Com-
mand), measurement or generator states
INITiate...
Start measurement; see INITiate:<Application>:MEASurement<i>
READ...
Start new measurement and retrieve results; see READ...? Command
ROUTe...
Select output connectors and signal paths
SOURce...
Specify generator settings
STOP...
Stop measurement, do not release resources; see STOP:<Applica-
tion>:MEASurement<i>
6.3 R&S CMW Software and Command Structure
The syntax of the remote commands for the R&S CMW500 reflects the instrument's basic
software modules. The header of each instrument-control command contains the logical
software entity the command is assigned to, eliminating the need of addressing the enti-
ties (e.g. firmware applications) separately.
6.3.1 General Command Structure
The instrument-control command headers for the R&S CMW500 firmware applications
consist of four parts.
SCPI subsystem
(1 mnemonic)
Firmware application
(2 mnemonics)
Instance
(numeric suffix)
Setting/Result
(1 or several mnemon-
ics)
SOURce :GPRF:GENerator 1 | 2 | 3 | 4 [:STATe]
R&S CMW Software and Command Structure