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Math operation, Overview – GW Instek GDS-2000 series Uer manual User Manual

Page 64

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GDS-2000 Series User Manual

64

Math Operation

Overview

Background

Math operation runs addition, subtraction,
multiplication, or FFT using the input signals and
shows the result on the display. The resulted
waveform characteristics can be measured using
the cursors.

Addition (+)

Adds amplitude of two signals.

Channel

pairs

4CH model: Channel 1 + 2, 3 + 4
2CH model: Channel1 + 2

Subtraction (–)

Extracts the amplitude difference between two
signals.

Channel

pairs

4CH model: Channel 1 – 2, 3 – 4
2CH model: Channel1 – 2

FFT

Runs FFT calculation on a signal. Four types of
FFT windows are available: Hanning, Flattop,
Rectangular, and Blackman.

Channel

4CH model: Channel 1, 2, 3, 4
2CH model: Channel 1, 2

Hanning FFT
window

Frequency resolution

Good

Amplitude resolution

Not good

Suitable

for....

Frequency measurement on
periodic waveform