Winscope ( was Suitable Cap for Gecko's was Re: 8-wire 1/2coil stepper?

Hi,

My 2 cents worth. The Tektronix 465 was probably the best portable
scope Tektronix ever made. The vertical attenuator switches were the
weak link, so make sure they work on every setting before considering
this scope. If it comes with a X10 probe, so much the better. A new
X10 probe can be expensive.

Just checked on e-bay and there are 5, all under $200.

Mariss

--- In CAD_CAM_EDM_DRO@y..., "bwrfromuk" <bwjarandall@c...> wrote:
> --- In CAD_CAM_EDM_DRO@y..., "j.guenther" <j.guenther@v...> wrote:
>
> I recently measured the current on my servos, I used 10 1ohms in
> parallel to give 0.1ohm, this gives a voltage change of
> 0.1volts/amp. The rise and fall time of the pulses for the servos
> was less than 10nanoSec, measured on a 100MHz scope. All you will
> see with 20KHz bandwidth is possibly a blip to tell you that there
> was a pulse there, but I don't think you'll get any useful
> information. Also don't forget that you will need proper
terminated
> scope probes if your measurements are to mean anything.
>
> Bernard
>
>
> > It seems to me that a 20KHz scope should be just fine for looking
> at step
> > pulses, that is unless you are trying to drive your steppers at
> 6000 RPM or
> > more. (20000 steps per second * 60 seconds )/200 steps per rev =
> 6000 RPM
> >
> > > -----Original Message-----
> > > From: Peter [mailto:prenolds@s...]
> > > Sent: Friday, May 10, 2002 10:10 AM
> > > To: CAD_CAM_EDM_DRO@y...
> > > Subject: Re: [CAD_CAM_EDM_DRO] Winscope ( was Suitable Cap for
> Gecko's
> > > was Re: 8-wire 1/2coil stepper?
> > >
> > >
> > > Sorry to put a damper on this suggestion but the winscope is
> bandwidth
> > > (top frequency) limited to 20KHz. This would be ideal for
> looking at
> > > audio signals but with step pulses down in the 1-5 uSec range
you
> really
> > > need a 20MHz scope (minumum)to see the transitions clearly.
> > >
> > > Look in the back of Poptronics magazine for used equipment
> suppliers.
> > > Or maybe search eBay? New 20-30Mhz scopes are around $300
> > >
> > > Cheers, Peter
> > >
> > >
> > >
> > > turbulatordude wrote:
> > >
> > > > for a really cheap scope, try winscope.
> > > > it is a software scope that connects to your sound card
> > > > port.
> > > >
> > > >
> > > >
> > > >
> > > > --- In CAD_CAM_EDM_DRO@y..., "keongsan" <keongsan@y...> wrote:
> > > >
> > > >>--- In CAD_CAM_EDM_DRO@y..., "mariss92705" <mariss92705@y...>
> wrote:
> > > >>
> > > >>
> > > >>>All the neat action is on the current sense resistors, but
you
> > > >>>
> > > > need
> > > >
> > > >>a
> > > >>
> > > >>>scope to see it. There, with a scope, you can easily see
every
> > > >>>microstep and most everything else on how well the drive is
> > > >>>performing. It is the single most useful test point.
> > > >>>
> > > >>Anyone have used before or knows of a reasonably priced
handheld
> > > >>
> > > > LCD
> > > >
> > > >>scope that is easy for beginners to use?
> > > >>
> > > >
> > > >
> > > > Addresses:
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> > > > FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> > > >
> > > > OFF Topic POSTS: General Machining
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> > > reach it if you have trouble.
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> > > >
> > > > http://groups.yahoo.com/group/jobshophomeshop I consider
this
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> > > are there, for OT subjects, that are not allowed on the CCED
list.
> > > >
> > > >
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> >
> > Addresses:
> > FAQ: http://www.ktmarketing.com/faq.html
> > FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> >
> > OFF Topic POSTS: General Machining
> > If you wish to post on unlimited OT subjects goto:
> > aol://5863:126/rec.crafts.metalworking or go thru Google.com to
> reach it if
> > you have trouble.
> > http://www.metalworking.com/news_servers.html
> >
> > http://groups.yahoo.com/group/jobshophomeshop I consider this
as
> a sister
> > site to the CCED group, as many of the same members are there,
for
> OT
> > subjects, that are not allowed on the CCED list.
> >
> >
> >
> > Post messages: CAD_CAM_EDM_DRO@y...
> > Subscribe: CAD_CAM_EDM_DRO-subscribe@y...
> > Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@y...
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> > Moderator: jmelson@a... timg@k... [Moderator]
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> > bill,
> > List Mom
> > List Owner
> >
> >
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