You need to test, we're here to help.

You need to test, we're here to help.

08 April 2019

Fast Fourier Transforms: Automatic Edition

Shown is the user interface for Teledyne LeCroy's Spectrum Analyzer software option
Figure 1: Shown is the user interface for Teledyne LeCroy's
Spectrum Analyzer software option
Many motorists love the experience of driving a sporty car with its convertible top down and a stickshift manual transmission. Others don't want the hassle of a clutch and prefer the user-friendly feel of a slick automatic that does some of the work for them. Oscilloscopes can provide the same sort of choice for many measurement tasks in the same instrument.

02 April 2019

Fast Fourier Transforms: Stickshift Edition

Shown at left is a 50-kHz input sine wave with the FFT of the same signal at right
Figure 1: Shown at left is a 50-kHz input sine wave with the
FFT of the same signal at right
Perhaps you're old enough to remember when more cars had stickshifts. They're a little bit more work to drive than cars with automatic transmissions, but the experience can be much more rewarding. Oscilloscopes these days are like cars with both types of transmissions, and you can use either one for many tasks. One of those tasks is fast Fourier transforms (FFTs), and in this post we'll take you through driving an oscilloscope to perform an FFT with a stickshift.