Tektronix TPS2000 Series User Manual page 125

Digital storage oscilloscope
Hide thumbs Also See for TPS2000 Series:
Table of Contents

Advertisement

To set up the FFT display, follow these steps:
1. Push the MATH MENU button to see the Math Menu.
2. Push Operation
3. Select the Math FFT Source channel.
In many cases, the oscilloscope can produce a useful FFT spectrum
even if the YT waveform is not triggered. This is especially true if
your signal is periodic or random (noisy).
NOTE. Trigger transient or burst waveforms and position as close as
possible to center screen.
Nyquist Frequency
The highest frequency that any real-time digitizing oscilloscope can
measure without errors is one-half the sample rate. This frequency is
called the Nyquist frequency. Frequency information above the
Nyquist frequency is undersampled which causes FFT aliasing,
described on page 5- - 8.
The math function transforms the center 2048 points of the
time-domain waveform into an FFT spectrum. The resulting FFT
spectrum contains 1024 points that go from DC (0 Hz) to the Nyquist
frequency.
TPS2000 Series Digital Oscilloscope User Manual
FFT.
Math FFT
5- 3

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the TPS2000 Series and is the answer not in the manual?

Table of Contents