In Chamber Testing

[vex]

Originally Posted by scotty305

I don't mean to be contrary, but I received the same 'sample at double the input signal frequency' advice from textbooks and some professors. Other professors with more real-world industry experience advised that data will be much more useful when sampled at no less than 5-10x the signal frequency. Try sampling a 100Hz sine wave at 200Hz, the plotting the results... it's not going to look much like a sine wave. If you logged a fuel injector its operating frequency, the indicated duty cycles would always be 0%, 50% or 100%... Personally I'd like to at least know +/-10%.

You're right. I forgot the word 'least' after at.