Re: test equipment

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "harvey norris by way of Terry Fritz <twftesla-at-qwest-dot-net>" <harvich-at-yahoo-dot-com>


--- Tesla list <tesla-at-pupman-dot-com> wrote:
> Original poster: "Allanh by way of Terry Fritz
> <twftesla-at-qwest-dot-net>" <allanh-at-starband-dot-net>
> 
> I've been using O'scopes for 40 years and have
> bought a
> few used ones. I've come to the conclusion that
> expensive
> ones like Tektronix, HP etc. are to be avoided. I
> also do
> not recommend any digital scopes as they have not
> reached the point of being
> able to replace analog scopes in all applications. I
> worked as the mastering
> engineer at a
> CD plant for over 13 years. Every month or so Tek
> and HP salesmen would
> offer to leave me their "newest" models so that I
> could tell them what was
> wrong with their
> algorithms.  I almost never took them up. I showed
> them that their 20K$ plus
> machines could not match a
> $400 analog when it comes to real world information
> about freq. below 20 Mcps. especially when viewing
> complex bursts of mulitfreq. energy.
I always wondered how a digital scope would record a
phenomenon of exessive rf bursts per time period. In
the beginning of work with rf from huge inductors this
multitracing phenomenon was very common. With every
"ordinary" scope I have tried one gets a phenomenon of
multitracing as shown at 
http://groups.yahoo-dot-com/group/teslafy/files/BRMA/Dzl9356.jpg
  This was made at 5 us/div from a very low ~31,250
hz, from  bifilar inductor subjected to impossibly
high BPS rates, made via small bulb neon polar
discharge. How would a digital scope deal with that?
HDN


 Sounds like the
> output of a TC.  I noticed that all the big scope
> companies
> have quietly re-introduced an analog model or two
> recently. Seems they may
> have realized the truth of physics.
> 
> good luck,
> 
> allan
> 
> ----- Original Message -----
> From: "Tesla list" <tesla-at-pupman-dot-com>
> To: <tesla-at-pupman-dot-com>
> Sent: Saturday, March 09, 2002 6:26 PM
> Subject: Re: test equipment
> 
> 
> > Original poster: "by way of Terry Fritz
> <twftesla-at-qwest-dot-net>"
> <Parpp807-at-aol-dot-com>
> >
> > Terry, and all others eager to toss their ancient
> ailing antique analog
> scopes
> > in exchange for the latest digital drool:
> >
> > My Tektronics 545B needs a replacement for the HV
> transformer.
> > Similar behemoths are the Tek 543B, 544, 546 and
> 547.
> > All these scopes use the same HV transformer.
> >
> > Please contact me off-list if you can help me find
> a transformer
> replacement.
> >
> > Happy day,
> > Ralph Zekelman
> >
> >
> >
> 
> 
> 


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