Math
The oscilloscope supports many math operations between analog channels including addition (+), subtraction (-),
multiplication (*), division (/), FFT, differential (d/dt), integral (
∫ 𝑑𝑡
), square root (√). The resulting math
waveform is displayed in white and labeled with “M”. You can use cursors to measure it.
Note:
If the analog channel or the math function is cut off (waveforms do not display on the screen completely), the resulting
math will also be cut off.
9.1 Units for Math Waveforms
Use the channel function menu to set the unit of each channel to “V” or “A”.
The oscilloscope math operation includes units as below:
Math
Operation Unit
Addition (+)or subtraction (-)
V, A
multiplication (*)
𝑉
2
, 𝐴
2
𝑜𝑟𝑊
division (/)
None,
𝑉 ∗ 𝐴
−1
𝑜𝑟 𝑉
−1
∗ 𝐴
FFT
dBVrms, Vrms, dBm, dBArms, Arms
differential (d/dt)
𝑉 ∗ 𝑆
−1
𝑜𝑟 𝐴 ∗ 𝑆
−1
integral (dt)
VS or AS (V * second or A * second)
square root ( )
𝑉
1/2
𝑜𝑟 𝐴
1/2
Table 9.1
Math Operations Units
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