R&S
®
CMW 500 Remote Control
R&S CMW Software and Command Structure
Operating Manual 1202.3986.32 – 03 80
Firmware applications
Measurement Contexts and Views
Comparison with CMU Commands
5.3.1 General Command Structure
The instrument-control command headers for the R&S CMW 500 consist of four parts.
SCPI subsystem
(1 mnemonic)
Fi
r
mware application
(2 mnemonics)
Instance
(numeric
suffix)
Setting/Result
(1 or several
mnemonics)
SOURce :GPRF:GENerator 1 | 2 | 3 |
4
[:STATe]
The purpose and format of the four command parts is as follows:
SCPI Subsystem
One of the root mnemonics specified in the SCPI standard, indicating the SCPI
subsystem. Commands within the same subsystem serve a similar purpose; see SCPI
Subsystems Used. Some root mnemonics may be optional.
Firmware application (FWAs)
Two non-optional mnemonics indicating a combination of network standard or general
purpose (GP) measurement and generator/measurement function group; see Firmware
Applications.
Instance
Numeric suffix used to distinguish several FWAs of the same type (e.g. several GPRF
generators). Values can range from 1 to 4; a suffix 1 can be omitted according to SCPI
rules.
Setting/Result
One or several possibly optional mnemonics indicating the purpose of the command.
Extensions for measurement firmware applications
Many of the measurement firmware applications provide several measurement
contexts and views. They are identified by fourth- and fifth/sixth-level mnemonics.
Due to the general structure described above, most R&S CMW 500 commands are not
SCPI confirmed, however, they follow SCPI syntax rules (see also Remote Control
Operation).
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