Subsystem Commands; Command Names - Anritsu LMR Master S412E Programming Manual

2-6 Subsystem Commands

2-6 Subsystem Commands
Subsystem commands control all instrument functions and some general purpose functions.
All subsystem commands are identified by the colon that is used between keywords, as in
:INITiate:CONTinuous.
The following information is provided for each subsystem command that is described in the
following chapters:
• The command name
• The path from the subsystem root command
page 2-5).
• The query form of the command (if applicable)
• The command title.
• A description of the purpose of the command.
• The data parameters that are used as arguments for the command (described in
Section "Data Parameters" on page
available parameter choices.

Command Names

Typical SCPI commands consist of one or more keywords, parameters, and punctuation. SCPI
command keywords can be a mixture of UPPERCASE and lowercase characters. Except for
common commands, each keyword has a long form and a short form.
In this manual, the long form is presented with the short form portion in UPPERCASE and
the remainder in lowercase. For example, the long form of the command keyword to control
the instrument display is :DISPlay, and the short form is :DISP.
The short form keyword is usually the first four characters of the long form (example: :CALC
for :CALCulate). The exception to this is when the long form is longer than four characters
and the fourth character is a vowel. In such cases, the vowel is dropped and the short form
becomes the first three characters of the long form. Example: the short form of the keyword
:POWer is :POW.
Some command keywords may have a numeric suffix to differentiate between multiple
instrument features such as multiple trace options. For example; keywords
:TRACe[:DATA]{1|2|3}, :TRACe1, or :TRACe3.
In the previous paragraph, :TRACe is identical to :TRACe1. If a numeric suffix is
not included in a command, then the first option is implied. Braces (curly brackets)
Note
{ } designate optional keyword parameters. Square brackets [ ] designate
optional command keywords.
As with any programming language, the exact command keywords and command syntax
must be used. The syntax of the individual commands is described in detail in the
programming command chapters. Unrecognized versions of long form or short form
commands, or improper syntax, will generate an error.
2-4
("Command Names" on page
2-8). This may include the parameter type and the
PN: 10580-00319 Rev. N
Programming with SCPI
2-4).
("Hierarchical Command Structure" on
("Query Commands" on page 2-6).
S412E PM