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Operating Math functions
•
Math functions are displays of +, -,
FFT mathematical results of CH1 and CH2.
The menu options are:-
Functions Menu
Type
Signal source 1
Operator
Signal source 2
Compress
X/Y offset
FFT spectrum analysis
•
Using FFT algorithm you can convert the
domain signals (YT) into frequency domain
signals.
•
With FFT you can observe the following
types of signals:
1.
Measure the harmonic wave
composition and distortion of the
system.
2.
Demonstrate the noise characteristics of the DC power.
3.
Analyse oscillation.
Functions Menu
Type
Signal source
Window
Vertical coordinate
x
Setup
Math
CH1
CH2
CH3
CH4
+
-
x
÷
CH1
CH2
CH3
CH4
1/1
Scale the waveform by any of the four ratios to chose from
1/10
1/100
1/1000
-----
Use the MULTIPURPOSE control to adjust waveform
Setup
FFT
CH1
CH2
CH3
CH4
Hanning
Hamming
Blackman
Rectangle
Linear V dB
,
÷
and
Notes
To carry out +, -, x, ÷ functions
Set signal source 1 as CH1 waveform
Set signal source 1 as CH2 waveform
Set signal source 1 as CH3 waveform
Set signal source 1 as CH4 waveform
Signal source 1 + Signal source 2
Signal source 1 - Signal source 2
Signal source 1 x Signal source 2
Signal source 1 ÷ Signal source 2
Set signal source 2 as CH1 waveform
Set signal source 2 as CH2 waveform
Set signal source 2 as CH3 waveform
Set signal source 2 as CH4 waveform
vertically / horizontally
To carry out FFT algorithm functions
Set CH1 as math waveform
Set CH2 as math waveform
Set CH3 as math waveform
Set CH4 as math waveform
Set Hanning window function
Set Hamming window function
Set Blackman window function
Set Rectangle window function
Set the vertical coordinate unit to linear or V dB
8
Notes
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