User`s guide

6 Measurements and Math Functions
234 InfiniiVision Oscilloscopes User’s Guide
Square Root
Square root () calculates the square root of the selected source.
1 Press the [Math] key, press the press the Function softkey and select f(t), press the
Operator softkey and select  (square root). Press the Source 1, Scale, or Offset
sofkeys if you want to change the source, scaling, or offset for the square root
function.
• Source 1 — selects the source for  (square root). (See page 225 for information
about using g(t) as the source.)
• Scale — lets you set your own vertical scale factors for  (square root) expressed
as V
1/2
/div (Volts-square-root/division), A
1/2
/div (Amps-square-root/division), or
W
1/2
/div (Watts-square-root/division or Volt-Amps-square-root/division). Units
are set in the channel Probe Menu. Press the Scale softkey, then turn the Entry
knob to rescale  (square root).
• Offset — lets you set your own offset for the multiply math function. The offset
value is in V
1/2
(Volts-square-root), A
1/2
(Amps-square-root), or W
1/2
(Watts-square-root) 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 
(square root).
A scale unit of U (undefined) will be displayed for scale and offset if the two source
channels are set to dissimilar units. Units are set using the channel’s Probe Units
softkey.