[sdiy] look Ma, no hands! ??

[Happy Harry]

Most scope probes have a hook... like one of those Pomona Mini-Grabbers or 
EZ-hook. If your probes does not have this
slide-on tip... it is probably missing.

Leave that ground clip short... I made a little wire ring, connected to a 
mini-hook. It lets me ground several probes at the same point.

The shorter the "loop" between the ground lead and the tip... the more
accurate the measurement. At audio frequencies in a quiet environment... you 
may not notice the difference. In what I do... you might see noise that is 
bigger that the signal by more than 100X !!!
Keeping the ground as short as possible will minimize this problem.

Look at a scope probe in a catalog and compare... do you have all the bits 
and pieces with yours... if not maybe buy a new one  ;^)

H^) harry


>From: Mountain Man <mtman at cloud9.net>
>To: synth-diy <synth-diy at node12b53.a2000.nl>
>Subject: [sdiy] look Ma, no hands! ??
>Date: Fri, 06 Apr 2001 07:07:33 -0400
>
>Hi, folks.  Yet-another-newbie-question <g>.   I got my new (old) scope
>a couple of days ago and am really having fun with it!  I haven't
>figured out some of the controls, but I'm making definite progress -
>it's seriously cool seeing my waveforms on the screen :)  I particularly
>love seeing the envelopes sit up and beg! <g>   My question is, how do
>you hold the probes in place?  I've been dedicating one hand to doing
>that, but when I start in on two-probe operations, I'm going to be short
>at *least* one hand!  The obvious solution that comes to mind -clip em
>on - doesn't seem like it will work (BTW, at the moment, I'm connecting
>to wire coming out of a jack.  I'm interested in solutions both for
>probing a wire, and probing on a board directly).  The probe tips are
>too teeny and delicate. I'm sure there's a simple and elegant way of
>going "no hands"  Another problem I'm having is that ground wire is too
>short on my probes.  Guess I'll just graft extensions on for that one.
>
>Thanks much,
>Elby
>

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