Chapter 7 SCPI
Syntax and notation
218 WCDMA Options Version 6.20
A list of all common commands can be found in subsection “Common
commands” on page 217.
SCPI notation The notation for SCPI commands is partly different from the RAPID! syntax.
Please, do not confuse them as this could lead to severe program errors.
[ item ] (identical with RAPID!) — Square brackets indicate an optional
item, which can also be omitted.
Example: :MEASure[:CONTinuous]:RFTX:PPEak. Regardless whether
the :CONTinuous command element is used or not, the 4400 will start taking
continuous measurements of the peak phase error.
item | item (identical with RAPID!) — Vertical bars separate entries of a list
and indicate that precisely one element out of that list must be used.
Example: Some commands require boolean parameters to be specified. This
means
that either on (1) or off (0) needs to follow the command. This is expressed by
using vertical bars: ON | OFF.
< item > (does not exist with RAPID!) — Pointed brackets indicate that
either a parameter or a subcommand must be used in order to build a valid
command.
Example: :RFGenerator:STATe <ON | OFF>. The RF generator can be
set either on or off.
{ item } (usage different to RAPID!) — Braces stand for a parameter or a
subcommand that has to be selected from a predefined table.
Example: :MEASure<:{measProp}> indicates all subcommands of the
MEASure subsystem, like RFTX, RFRX or AFAN.
NOTE
The SCPI system is not case-sensitive. It does not matter for the syntax
whether commands are written using capital letters, lowercase letters, or a
mixture of both.
However, for easy maintenance of SCPI programs, it is recommended to type
in the short form of a command in capital letters (
CONF) and the rest of it in
lowercase letters (
CONFigure).
NOTE
Some commands allow more than one parameter. In those cases, the single
parameters are separated by commas (,). There must not be any spaces
between the commas and the parameters.
Example:
:CONF:GSM:BS:TCH:NCELl 63,45,39,17,23,9
NOTE
The SCPI notation of commands differs from the RAPID! notation. Please, do
not confuse them as this could lead to severe program errors.
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