Chapter 7 Mathematical Operation; Mathematical Function; Fft - UNI-T UPO3000E Series User Manual

Chapter 7 Mathematical Operation

UPO3000E series oscilloscope carries a variety of mathematical operations:
Math: Source 1 + source 2, source 1 - source 2, source 1 * source 2,
source 1 / source 2
FFT: Fast Fourier Transform
Logic operation: AND, OR, NOT, XOR
Digital filter
Advanced operation
Press the MATH button on the vertical control area to enter the mathematical
operation menu. The POSITION and the SCALE knobs can be used to change
the vertical position and the vertical scales of the waveforms. The horizontal
time base scale cannot be adjusted independently for the math operation
waveforms, it will change automatically according to the horizontal time base
scale of the analog input channel.
Math operation cursor marks the result of a mathematical operation.

7.1 Mathematical Function

Press MATH type, and select math to enter the math menu.
Source 1:
Press the source 1 key to select any of CH1, CH2, CH3, CH4 as source 1
of mathematical operations.
Operator:
Press the operator key to select +, -, *, /.
(1) +: The waveforms of source 1 and source 2 are added point by point.
(2) -: The waveforms of source 1 and source 2 are subtracted point by point.
(3) *: The waveforms of source 1 and source 2 are multiplied point by point.
(4) /: The waveforms of source 1 and source 2 are divided point by point.
Source 2:
Press the source 2 key to select any of CH1, CH2, CH3, CH4 as source 2
of mathematical operations.

7.2 FFT

Using FFT (Fast Fourier Transform) mathematical operations, the time
domain signal (YT) can be converted into frequency domain signal. The
following types of signals can be easily observed using FFT:
Harmonic content and distortion in measurement system
Performance of noise in DC power supply
Vibration Analysis
Picture 5-1FFT frequency spectrum
Press MATH type and select FFT to enter the FFT menu.
Source:
Press the source key to select any of CH1, CH2, CH3, CH4 as the source
of FFT operations.
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