GW Instek GDS-2000 series Uer manual - Manual (Page 64)

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