Re: Use a scope to determine overvoltage needed for stepper motors

I have to agree with Paul on the Tektronics scopes. I have a 7613 that I got
from an electronics recycler for $50.00 several years ago. All it needed was
the contacts cleaned on the plugin connectors for the scope modules.
Darrell

----- Original Message -----
From: <paul@...>
To: <CAD_CAM_EDM_DRO@onelist.com>
Sent: Friday, January 28, 2000 10:01 AM
Subject: Re: [CAD_CAM_EDM_DRO] Use a scope to determine overvoltage needed
for stepper motors


> From: paul@...
>
> I have to admit a bias, but I really like Tek scopes. I have a 453 that
> was obsoleted in 1971 and it's still going strong. It's a 50 MHz scope
> with sufficient bandwith for just about anything except high speed digital
> work. I have seen these selling on ebay for $75. Not bad for a scope
that
> cost $2000 in 1969.
>
> The 453A series has a slightly larger screen and was built up to '75.
> The 454 series is a 150 MHz scope; similar features, just more
> bandwidth. This series is more or less portable at 30 pounds; the
> handle also serves as a stand to tilt the screen to a comfortable
> angle.
>
> Between the used equipment dealers, ebay and Ham swap and shops, you can
> get a perfectly usable used scope anywhere from < $100 to a couple of
> thousand depending on shape, calibration and features.
>
> I'm currently looking around for a 7900 mainframe scope. Those things
> use plug in modules that can do almost any imaginable measuring task.
> The 7900 has a 500 MHz bandwidth and can go higher with the right tweaks.
> Current ebay price seems to be in the $400-600 range.
>
> Tektronix has made a huge variety of scopes. Here's a URL that will
> give you brief descriptions of them:
>
> http://www.tek.com:80/Measurement/Support/scopes/faq/
>
> What to avoid? Anything but Tektronix :-) Something of a
> simplification, there are other good scopes out there, but you won't go
> wrong with Tek (I said I was biased :-)
>
> Paul
>
> >
> > From: "Tim Goldstein" <timg@...>
> >
> > Walter,
> >
> > I hear your comment
> > > Buying a scope is very interesting and is a great troubleshooting
tool.
> >
> > I am actively considering getting a scope even though I am
electronically
> > challenged. I have no clue what I should consider as required features.
From
> > shopping around it seems that buying a used one will give me the most
bang
> > for the buck. Can you give any advice on shopping for a scope, what I
should
> > look for, what I should avoid?
> >
> > Thanks in advance,
> >
> > Tim
> > [Denver, CO]
> >
> >
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> --
> Paul Amaranth | Rochester MI, USA
> Aurora Group, Inc. | Systems & Software
> paul@... | Unix / Windows / NT
>
>
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>
> Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the
discussion of shop built systems in the above catagories.
> To Unsubscribe, read archives, change to or from digest.
> Go to: http://www.onelist.com/isregistered.cgi
> Log on, and you will go to Member Center, and you can make changes there.
> For the FAQ, go to http://www.ktmarketing.com/faq.html
> bill,
> List Manager
>
>