Agilent Technologies E4406A VSA manual Parameters in Commands, OFFON01

Programming Fundamentals

SCPI Language Basics

Parameters in Commands

There are four basic types of parameters: booleans, keywords, variables and arbitrary block program data.

OFFON01
(Boolean)	This is a two state boolean-type parameter. The
	numeric value 0 is equivalent to OFF. Any numeric
	value other than 0 is equivalent to ON. The numeric
	values of 0 or 1 are commonly used in the command
	instead of OFF or ON. Queries of the parameter always
	return a numeric value of 0 or 1.
keyword	The keywords that are allowed for a particular
	command are defined in the command syntax
	description.
Units	Numeric variables may include units. The valid units
	for a command depend on the variable type being used.
	See the following variable descriptions. The indicated
	default units will be used if no units are sent. Units can
	follow the numerical value with, or without, a space.
Variable	A variable can be entered in exponential format as well
	as standard numeric format. The appropriate range of
	the variable and its optional units are defined in the
	command description.
	The following keywords may also be used in commands,
	but not all commands allow keyword variables.
	• DEFault - resets the parameter to its default value.
	• UP - increments the parameter.
	• DOWN - decrements the parameter.
	• MINimum - sets the parameter to the smallest
	possible value.
	• MAXimum - sets the parameter to the largest
	possible value.
	The numeric value for the function’s MINimum,
	MAXimum, or DEFault can be queried by adding the
	keyword to the command in its query form. The
	keyword must be entered following the question mark.
	Example query: SENSE:FREQ:CENTER? MAX

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