Math Operators; Add Or Subtract - Keysight Technologies InfiniiVision 2000 X Series User Manual

4
Math Waveforms
Math function

add or subtract

multiply
d/dt

FFT
√
* When the FFT source is channel 1, 2, 3 or 4, FFT units will be displayed in dBV when channel units
is set to Volts and channel impedance is set to 1 MΩ. FFT units will be displayed in dBm when
channel units is set to Volts and channel impedance is set to 50Ω. FFT units will be displayed as dB
for all other FFT sources or when a source channel's units has been set to Amps.
A scale unit of U (undefined) will be displayed for math functions when two source
channels are used and they are set to dissimilar units and the combination of units
cannot be resolved.

Math Operators

Math operators perform arithmetic operations (add, subtract, or multiply) on
analog input channels.
•
•
Add or Subtract
When you select add or subtract, the Source 1 and Source 2 values are added or
subtracted point by point, and the result is displayed.
You can use subtract to make a differential measurement or to compare two
waveforms.
If your waveforms' DC offsets are larger than the dynamic range of the
oscilloscope's input channels you will need to use a differential probe instead.
72
dt
(square root)
"Add or Subtract" on page 72
"Multiply or Divide"
Units
V or A
2
V , A
V/s or A/s (V/second or A/second)
Vs or As (V-seconds or A-seconds)
dB* (decibels). See also
page 84.
1/2
V
on page 73
Keysight InfiniiVision 2000 X-Series Oscilloscopes User's Guide
2
, or W (Volt-Amp)
"FFT Units"
1/2 1/2
, A , or W (Volt-Amp)
on