User manual

Operator's Manual
920836 Rev A
49
MISCELLANEOUS - DEFINE, DEF
Description
The DEFINE command specifies a mathematical function to be performed. This command is
used to control all math tools in the standard oscilloscope.
Command Syntax
DEFine EQN,'[<function>]<expression>'
Query Syntax
DEFine?
Response Format
DEFine EQN,'[<function>]<expression>'
Equations
Where <source> is shown enclosed in parentheses ( ), the function is included in the equation.
Function
Expression
Description
DIFFERENCE
<source1>-<source2>
Difference of two waveforms.
FFT
(<source>)
Fast Fourier Transform of waveform.
PRODUCT
<source1>*<source2>
Product of two waveforms.
RATIO
<source1>/<source2>
Ratio of two waveforms.
SUM
<source1>+<source2>
Sum of two waveforms.
Source Values
<sourceN>:= {C1,C2,C3,C4}
Examples
Compute the product of Channel 1 and Channel 2:
DEF EQN,'C1*C2'
Related Commands
INR?, PARAMETER_CUSTOM, PARAMETER_VALUE?