User`s guide

6 SCPI Command Reference
116 N9340A User’s Guide
Standard Notations
A command consists of mnemonics (keywords),
parameters and punctuation. Before you start to
program your analyzer, familiarize yourself with
the standard notation of each of them.
Keywords
Many commands have both a long and a short
form: use either one. (a combination of the two is
not allowed). Consider the:FREQuency command
for example:
• Short form :FREQ
• Long form :FREQuency
SCPI is not case sensitive, so fREquEncy is just as
valid as FREQUENCY, but FREQ and FREQUENCY are
the only valid forms of the FREQuency command.
In this documentation, upper case letters indicate
the short form of the keyword. The upper case and
lower case letters indicate the long form of the
keyword.
Punctuation
• A vertical bar "|" dictates a choice of one ele-
ment from a list. For example: <A>|<B> indicates
that either A or B can be selected, but not both.
• Square brackets "[ ]" indicates that the enclosed
items are optional.
• Angle brackets "< >" indicates a variable value to
be defined.
• A question mark "?" after a command indicates
that this command is a query. The instrument
should return a data to the controller.
• A curly brackets “{ }” indicates a variable
parameters to be defined.