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General => General Technical Chat => Topic started by: Hans Mortensen on May 03, 2015, 09:58:15 pm

Title: newbe oscilloscope question
Post by: Hans Mortensen on May 03, 2015, 09:58:15 pm

I recently obtained a 30M Hz oscilloscope and was messing around with it when I touched the probe end and got a somewhat sinusoidal frequency at 16.8 thousand Hz and an amplitude of 1V. and I was wondering what it could be? All I know is that it gets less noise when I turn off all nearby electrical divices and is completely eliminated when I touch the ground lead. Any info would be great Thanks ;D

Title: Re: newbe oscilloscope question
Post by: kakureru on May 03, 2015, 10:32:03 pm

probably near by switching PSU being noisy.

Title: Re: newbe oscilloscope question
Post by: Howardlong on May 03, 2015, 10:35:41 pm

Or fluorescent light.

Title: Re: newbe oscilloscope question
Post by: KJDS on May 04, 2015, 06:42:35 am

line scan rate of a CRT