Data Parameters; Unit Suffixes - Anritsu Site Master S331L Scpi Programming Manual

2-3 Subsystem Commands

Data Parameters

Data parameters, referred to simply as "parameters," are the quantitative values used as
arguments for the command keywords. The parameter type associated with a particular SCPI
command is determined by the type of information required to control the particular
instrument function. For example, Boolean (ON | OFF) type parameters are used with
commands that control switch functions.
Some command descriptions specify the type of data parameter to be used with each
command. The most commonly used parameter types are numeric, extended numeric,
discrete, and Boolean.
Numeric
Numeric parameters comprise integer numbers or any number in decimal or scientific
notation, and may include polarity signs.
Discrete
Discrete parameters, such as INTernal and EXTernal, are used to control program
settings to a predetermined finite value or condition.
Boolean
Boolean parameters represent binary conditions and may be expressed as ON, OFF or
1, 0. Boolean parameters are always returned by query commands as 1 or 0 in numeric
value format.

Unit Suffixes

Unit suffixes are not required for data parameters, provided the values are scaled for the
global default units. The instrument SCPI default units are: Hz (Hertz) for frequency related
parameters s (seconds) for time related parameters, and m (meters) for distance related
parameters.
2-6 PN: 10580-00322 Rev. F
Chapter 2 — Programming with SCPI
S331L PM