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Philips210 · 4th Dec 2017, 1:16 pm

Hi

Something else occured to me. Although the ramp is steady in amplitude, I wonder if the width of the ramp could be the problem. So if it was of insufficient width then could that explain there being only a dot on the left of the screen? Increasing the timebase speed eventually widens the dot to form a horizontal line. So maybe a timing problem with the ramp? I guess there should be a direct correlation between the timebase speed setting and the width of the ramp.

Regards
Symon.

4th Dec 2017, 1:16 pm	#10
Philips210 Nonode Join Date: May 2007 Location: Redruth, Cornwall, UK. Posts: 2,580	Re: Hameg HM208 Oscilloscope Timebase fault Hi Something else occured to me. Although the ramp is steady in amplitude, I wonder if the width of the ramp could be the problem. So if it was of insufficient width then could that explain there being only a dot on the left of the screen? Increasing the timebase speed eventually widens the dot to form a horizontal line. So maybe a timing problem with the ramp? I guess there should be a direct correlation between the timebase speed setting and the width of the ramp. Regards Symon.