Analyze Wavefor
mData
2. Push FFT.
Dual Wfm
Math
FFT Advanced
Math
(M) Label
FFT
3. Push FFT Source on the side menu, if
needed, and turn multipurpose knob a to
select the s
ource to use. Choices are:
channels 1, 2, 3, 4, reference waveforms 1,
2, 3, and 4.
FFT
Source
1
4. Push Vertical Scale on the side menu
repeatedly to select either Linear RMS or
dBV RMS.
Vertical
Units
Linear
RMS
5. Push Window on the side menu repeatedly
to select the desired window.
Window ch
oices are: Rectangular,
Hamming, Hanning, and Blackman-Harris.
Window
Hanning
6. Push Horizontal on the side menu to
activat
e multipurpose knobs a and b to pan
and zoom the FFT display.
Horizontal
625kHz
1.25kHz-
/div
122 MSO4000B and DPO 4000B Series Oscilloscopes User Manual