Form 2-3: FFT menu Description
FFT operation knack:
Signals with DC component or deviation will bring
in error or deviation of FFT waveform component.
AC coupling mode can be selected to reduce DC
component.
Average obtainment mode of digital storage
oscillograph can be set to reduce random noise
and aliasing frequency component of repeated or
single pulse event.
Operating Manual for UTD2000/3000
23
Function
Setup
Description
Type
FFT
FFT mathematical
calculation
Information
source
CH1
CH2
To set CH1 and CH2 as
calculation waveform.
Window
Hamming
Blackman
Rectangle
Set Hanning window
function
Set Hamming window
function
Set Blackman window
function
Set Rectangle window
function
Hanning
Vertical unit
Vrms
dBVrm
To set vertical unit to
Vrms or dBVrms.