User`s guide

Measurements and Math Functions 6
InfiniiVision Oscilloscopes User’s Guide 227
Multiply
When you select the multiply math function, the voltage values of the channel chosen in
Source 1 are multiplied point by point by the voltage values of the channel chosen in
Source 2, and the result is displayed. Multiply is useful for seeing power relationships
when one of the channels is proportional to the current.
Example: Multiply channel 1 by channel 2
• Scale — lets you set your own vertical scale factors for multiply expressed as
V
2
/div (Volts-squared/division), A
2
/div (Amps-squared/division), or W/div
(Watts/division or Volt-Amps/division). Units are set in the channel Probe Menu.
Press the Scale softkey, then turn the Entry knob to rescale the math waveform.
• Offset — lets you set your own offset for the multiply math function. The offset
value is in V
2
(Volts-squared), A
2
(Amps-squared), or W (Watts) and is represented
by the center horizontal grid line of the display. Press the Offset softkey, then turn
the Entry knob to change the offset for the math waveform.
E
XAMPLE OF MULTIPLY
Channel 1
Channel 2
1 * 2 waveform
Multiply
operator
First
operand
Displayed
function
selected
Math
waveform
scale
Math
waveform
offset
Second
operand