[sdiy] oscilloscope single/dual ?

[James Patchell]

I think Magnus is referring to the Dual Beam Scopes that Tektronix used to 
make.  I used one about 20 some years ago....

The difference is that the scope tube has two electron guns, and two sets 
of deflection plates, at least for the vertical.  I think it only had one 
set of horizontal deflection plates, but I could be wrong.

A dual trace (dual channel?) scope will multiplex the two channels on the 
screen....


At 03:15 PM 6/28/2004 -0700, Scott Gravenhorst wrote:
>Magnus Danielson <cfmd at bredband.net> wrote:
> >From: Scott Gravenhorst <music.maker at gte.net>
> >Subject: Re: [sdiy] oscilloscope single/dual ?
> >Date: Mon, 28 Jun 2004 14:56:49 -0700
> >Message-ID: <200406282156.i5SLuni18760 at linux6.lan>
> >
> >Scott,
> >
> >> I've had both dual and single trace scopes.  Dual wins by a goodly
> >> margin.  Some things can be done with add/subtract, others are not so
> >> easy.  Plus the add/subtract is built in on a decent dual trace, plus the
> >> ability to trigger off of either channel.
> >>
> >> If this is a democracy, I vote dual.
> >
> >Dual trace or dual channel?
> >
> >There is a difference you know... ;O)
>
>Actually, I didn't.  What is the difference?
>
>Also, how can one implement dual trace without two input channels?
>
>What I mean, is two separate input channels where each channel can either be
>selected as the sole displayed trace, or both can be displayed as separate
>traces in either alternate or chop mode, or the two input channels can be
>either added or subtracted and displayed as one trace.  Is that dual 
>channel or
>dual trace?
>
> >
> >Dual channel - sure. Dual trace, I'm not so sure it's worth the money.
> >
> >I'm sure I could have you flooded with pictures outside and inside one or a
> >pair of good old Tektronix dual-trace scopes fairly quickly if I asked 
> for it.
> >
> >Cheers,
> >Magnus - with a 7 channel oscilloscope
> >
>
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