Agilent Technologies B2902 Instrukcja Obsługi Pobierz pdf (Strona 138)

4- 16 Agilent B2900 SCPI Command Reference, Edition 2

Subsystem Commands

:CALCulate:MATH[:EXPRession]:CATalog?

Returns the list of all the predefined and user-defined math expression names.

Syntax :CALCulate[c]:MATH[:EXPRession]:CATalog?

Query response catalog <newline>

catalog returns all of the predefined and user-defined math expression names.

Response data type is AARD. For example, if the instrument stores the math

expressions POWER, OFFCOMPOHM, VOLTCOEF, and VARALPHA, catalog

returns “POWER”,“OFFCOMPOHM”,“VOLTCOEF”,“VARALPHA”.

Example :CALC2:MATH:EXPR:CAT?

:CALCulate:MATH[:EXPRession][:DEFine]

Defines a math expression which will be a user-defined math expression. For the

resources effective for the expression, see

“Resources used in the expressions” on

page 4-17. Also see “Predefined math expressions” on page 4-18 for the definition

of predefined expressions.

Before executing this command, the math expression must be selected by

the

:CALCulate:MATH[:EXPRession]:NAME command.

Syntax :CALCulate[c]:MATH[:EXPRession][:DEFine] definition

:CALCulate[c]:MATH[:EXPRession][:DEFine]?

Parameter definition Definition of a math expression. Up to 256 ASCII characters.

Parameter data type is Expr. The expression must be enclosed

by parentheses. For example, definition=(SOUR2/CURR2).

Maximum of 32 math expressions can be defined including the

predefined math expressions.

Query response definition <newline>

definition returns the definition of the math expression currently selected. For

example, definition returns (SOUR2/CURR2). Response data type is Expr.

Example :CALC:MATH:EXPR:NAME “Expression_for_ch1”

:CALC:MATH:EXPR:DEF

((CURR[1]-CURR[0])*(RES[1]-RES[0]))

:CALC:MATH?

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