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The Philpott · 16th May 2018, 9:14 pm

Having secured a decent low voltage DC reference, i have calibrated the magnetic shunt on my Precision Avometer, which was showing around 1% low at 66% of FSD.

If anyone wants/needs to do this i will do some comments/images, as it is more straightforward than i expected it to be. The time needed is however 3 times more than on the standard avo of the period.

I have now got it accurate at 66% FSD, and 0.12% (of the reading) high, at 83% of FSD. (Comfortably within the spec. printed in the lid.)

This is a heavy old dinosaur, but it interests me as being a good effort to do as much as was possible with an analogue movement, with the shadow of the digital revolution already hanging over it.

16th May 2018, 9:14 pm	#1664
The Philpott Dekatron Join Date: Aug 2016 Location: Colchester, Essex, UK. Posts: 4,107	Re: AVO Multimeter survey Having secured a decent low voltage DC reference, i have calibrated the magnetic shunt on my Precision Avometer, which was showing around 1% low at 66% of FSD. If anyone wants/needs to do this i will do some comments/images, as it is more straightforward than i expected it to be. The time needed is however 3 times more than on the standard avo of the period. I have now got it accurate at 66% FSD, and 0.12% (of the reading) high, at 83% of FSD. (Comfortably within the spec. printed in the lid.) This is a heavy old dinosaur, but it interests me as being a good effort to do as much as was possible with an analogue movement, with the shadow of the digital revolution already hanging over it.