![background image](http://html2.mh-extra.com/html/keithley/sourcemeter-2400/sourcemeter-2400_user-manual_4037086411.webp)
18-30
SCPI Command Reference
2400 Series SourceMeter
®
User’s Manual
Define math expression
[:EXPRession] <form> or [:DEFine] <form>
:CALCulate[1]:MATH[:EXPRession] <form>
Define math formula
:CALCulate[1]:MATH[:EXPRession][:DEFine] <form>
Define math formula
Parameters
<form> = mathematical formula using instrument readings, numbers
and standard math operator symbols. See “Description” for details.
Query
:MATH?
Query user-defined math expression
Description
Use either of these two commands to define a math formula using mea-
sure and source readings, numeric constants, and standard math operator
symbols. After the math expression is defined, it will be assigned to the
name that was created using the :NAME command and will become the
selected math expression. See
“NAME <name>,” page 18-24
for more
details.
Valid parameter names for measure and source readings include:
VOLTage
Use V-Measure or V-Source reading
CURRent
Use I-Measure or I-Source reading
RESistance
Use ohms reading
TIME
Use timestamp reading
Valid math operators and their operations are listed as follows:
+
Add
-
Subtract
*
Multiply
/
Divide
^
Exponent
log
Logarithmic, base 10
ln
Natural log
sin
Sine
cos
Cosine
tan
Tangent
exp
e
x
NOTE
The log and ln operations are performed on the absolute value of the specified
number. For example, log (100) = 2 and log (-100) = 2.
Expressions are evaluated according to the following precedence rules:
1.
Enclosed by parentheses
2.
Unary operators (+ and -)
3.
^ (exponentiation)
4.
* (multiplication) and / (division)
5.
+ (addition) and - (subtraction)
6.
Left to right.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Содержание SourceMeter 2400
Страница 508: ...A Specifications Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...
Страница 520: ...B StatusandErrorMessages Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...
Страница 530: ...C DataFlow Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...
Страница 534: ...D IEEE 488BusOverview Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...
Страница 554: ...F ContactCheckFunction Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...
Страница 574: ...G GPIB488 1Protocol Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...
Страница 589: ...Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...
Страница 591: ...Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...
Страница 592: ...Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...