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Using Additional Capabilities 6 - 11
USING WAVEFORM MATH FUNCTIONS
You can perform several math functions on the various
waveforms or memories.
•
ADD, SUBTRACT, and MULTIPLY require two oper-
ands (SOURCE 1 and SOURCE 2). The operands can
be selected from acquisition memories or waveform
memories.
•
INVERT, INTEGRATE, and FILTER require one oper-
and (SOURCE 1) from acquisition memories or wave-
form memories.
•
All operations require a DESTINATION waveform
memory selection.
NOTE
Leaving the Math function active will cause a continuous
update of the destination memory if the source(s) are active
waveform(s).
1. Press to open the Special Functions menu.
2. Press to open the MATH menu.
3. Start or stop the math function by turning the MATH
FUNCTION on or off.
4. The MATH OPERATION list box lists all math opera-
tions available. Choose one and press to select.
5. Use
to highlight the source(s) and destination
items. Press to open the list boxes. Now choose
the source(s) and destination. Press to select.
Figure 6-6. Math Window for Multiply
Scaling the Display
The Scale factor allows you to adjust the display to
accommodate the math result. Use or to
highlight SCALE RESULT, and press to open the list
box. You can now use and to highlight: off, /5,
/25, or /125, and press to select.
Choosing a Math Operation
You can choose from the following six math operations:
Add Adds two waveforms (each sourced from an
active input or a memory location) and stores the result in a
waveform memory. For example, waveforms from INPUT A
(SOURCE 1) and Waveform 1 (SOURCE 2) can be added,
resulting in a waveform stored in Waveform 4 memory
(DESTINATION).
Subtract Subtracts the SOURCE 2 waveform from the
SOURCE 1 waveform and stores the result in the next free
waveform memory. As with ADD, active inputs or memory
locations can be used in any combination for the sources.
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