Many of the modern motor testers today utilize a spectral analysis tool known as a Fast Fourier Transform or FFT for short. When reading up on motor test theory, this is a topic that is mentioned often and repeated almost as often, but when pressed for an explanation many folks find themselves scratching their heads. They’ve seen an FFT on their tester, and probably know how to interpret the data it provides but may still be at a loss as to how it’s derived.

Operation 2024

The Snell Group is excited to announce that Jeremy Kays has come on board, in the position of VP of Global Operations. We will be expanding our team of experts and support in the reliability sector. Jeremy’s focus will be to grow the service department and he will be writing about the extensive line of services that The Snell Group offers in his new monthly blog. Each month you’ll be able to read a little more about his reliability journey!

Probably the most common question we get asked during training, especially in a building applications class, is “What emissivity setting should I use?” Why this happens is actually not very surprising as long as the manufacturers insist on putting easily searchable emissivity tables in the menu system of many infrared cameras or continue marketing equipment as “easy point and shoot” systems, these questions will certainly keep coming. Thermographers seem to gravitate toward this particular menu item like moths to a porch light.