Hi... I want to reduce the noise and I read about dithering, I´m using the daq 6024e, and I need to know if I only need to enable dithering with MIO config, or if I must enable dithering with MIO and add gaussian noise to the signal... thanks
Your manual should tell you this for certain, but I believe the definition of dithering is the addition of noise for the purpose of improving the measurement.
In other words, do NOT add your own noise to the signal.
Steve Bird Culverson Software - Elegant software that is a pleasure to use. Culverson.com
CoastalMaineBird wrote: > Your manual should tell you this for certain, but I believe the > definition of dithering is the addition of noise for the purpose of > improving the measurement. > > In other words, do NOT add your own noise to the signal.
Addition of noise for dithering reduces quantization noise. The easiest example are screen fonts which look 'blocky' unless grey scale pixels are added. Where else would you add noise?
When you turn on dithering on any NI boards that support it, the noise is added for you, if I remember correctly. You don't need to hook up a noise generator externally.
Steve Bird Culverson Software - Elegant software that is a pleasure to use. Culverson.com
