Maybe that's just faulty/dirty/corroded range switch on the scope. Try
to turn it like crazy quite a few times so the contatcs should wipe out
a bit and clean.
I also find the probes themselves to cause unbelievable readings by poor
contact inside, and especially when spring clip is attached. And I'm not
talking about toy crap, but genuine Tek probes not older than 10-15 years.
Roman
W dniu 2016-02-10 o 00:55,
jw_dewdney@yahoo.com [PolySix] pisze:
>
>
> fair enough eidorian_aladan... though this scope's adjustment range is
> only ± 50% max. Everything else was zeroed out - been using scopes for
> 40 years - but only very sporadically - and not enough to have a high
> degree of confidence with what i'm doing - and this one is relatively
> new to me but sort of an ebay 'junker' with other issues as well. But
> good advice - yes I've been combing over the manual as I've only spent a
> handful of hours with this thing so far... 'know thy tools'...
>
>