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frsimen · 8th Dec 2022, 7:58 pm

Hello Keith,

The glitch when the last digit changes is probably a feature of the design. My HF225 does the same thing. I expect it is caused by both the main VCO and the interpolation oscillator having to step at the same time, with the interpolation oscillator jumping 1kHz rather than the 8Hz or so of a normal step.

Paula

8th Dec 2022, 7:58 pm	#8
frsimen Heptode Join Date: Jan 2011 Location: Croydon, London, UK. Posts: 773	Re: Lowe HF225 fault Hello Keith, The glitch when the last digit changes is probably a feature of the design. My HF225 does the same thing. I expect it is caused by both the main VCO and the interpolation oscillator having to step at the same time, with the interpolation oscillator jumping 1kHz rather than the 8Hz or so of a normal step. Paula