Measurements and Math Functions 5
InfiniiVision 7000B Series Oscilloscopes User’s Guide 199
rectangular, and Blackman- Harris. For more information on leakage, see
Agilent Application Note 243, “The Fundamentals of Signal Analysis” at
http://cp.literature.agilent.com/litweb/pdf/5952- 8898E.pdf.
FFT Operation
1 Press the [Math] key, press the Function softkey and select f(t), press the
Operator softkey and select FFT.
• Source 1 — selects the source for the FFT. (See page 184 for
information about using g(t) as the source.)
• Preset — sets the frequency Span and Center to values that will cause
the entire available spectrum to be displayed. The maximum available
frequency is half the effective FFT sample rate, which is a function
of the time per division setting. The current FFT sample rate is
displayed above the softkeys.
• More FFT — displays the More FFT Settings Menu.
2 Press the More FFT softkey to display additional FFT settings.
• Window — selects a window to apply to your FFT input signal:
Source
select
Preset Span
and Center
frequencies
Vertical and
Window FFT
controls
Sample
rate
Displayed
function
selected
FFT Scale FFT Offset
Window
Center
frequency
Frequency
Span
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