Re: 434 oscilloscope.

From: BaggySac (BaggySac_at_hotmail.com)
Date: 06/24/04


Date: Wed, 23 Jun 2004 21:44:41 -0400

No offense taken - after all, I didn't make it - and it IS old. It still
seems respectable, but at least knowing it is in the 25 Mhz range at least
helps me to understand the limitations on it.

Thanks for the input. And the Tektronics site does have a great primer for
basic understanding of the control setup on most scopes (I guess).

"Jim Yanik" <jyanik@abuse.gov> wrote in message
news:Xns9511AC33470E8jyanikkuanet@204.117.192.21...
> "BaggySac" <BaggySac@hotmail.com> wrote in
> news:kugCc.29578$MU4.771983@news20.bellglobal.com:
>
> > oh well - I can always run it until it drops! I use it infrequently
> > anyways and mostly for audio... When it goes I'll come back here for
> > sage advice on an affordable alternative.
> >
> >
> >
> > "Jim Yanik" <jyanik@abuse.gov> wrote in message
> > news:Xns95115E081AF09jyanikkuanet@204.117.192.21...
> >> "BaggySac" <BaggySac@hotmail.com> wrote in
> >> news:6F5Cc.26965$Nz.1125787@news20.bellglobal.com:
> >>
> >> > yes - I know it is an old beast, but it works flawlessly, so if I
> >> > can get it to do the job for me, why not? I suspect newer ones are
> >> > a few beer and cheesies worth...
> >> >
> >> > thx.
> >> >
> >> > "Jim Yanik" <jyanik@abuse.gov> wrote in message
> >> > news:Xns9510C3ECA5D8Djyanikkuanet@204.117.192.21...
> >> >> "BaggySac" <BaggySac@hotmail.com> wrote in
> >> >> news:HE1Cc.23611$Nz.1018304@news20.bellglobal.com:
> >> >>
> >> >> > I have this old tektronics scope. I did find a primer for scopes
> >> >> > on tektronic web site, but I cannot ind specs on the scope -
> >> >> > like bandwidth.
> >> >> >
> >> >> >
> >> >> >
> >> >>
> >> >> 434 has 25 Mhz analog non-storage BW.
> >> >> Stored writing rate depends on a few variables.
> >> >>
> >> >> FYI,These scopes have been out of production for a LONG time.
> >> >> You can get an approximate date of manufacture by checking date
> >> >> codes on various parts
> >> >> The format is ww-yy;last 2 digits of month,and year.I'd check the
> >> >> CRT date code,then ICs,timing caps,pots.
> >> >>
> >> >>
> >> >> minor nitpick;TektroniX,not -ics
> >> >>
> >> >> --
> >> >> Jim Yanik
> >> >> jyanik-at-kua.net
> >> >
> >> >
> >> >
> >>
> >>
> >> WRT age;
> >> The stored writing rate depends on the CRT's flood guns,and
> > eventually,they
> >> wear out.And such old scopes are hard to get parts for repairs.
> >> Plastic parts outgass,get brittle and break.
> >>
> >> The 434 PS was a wierd one,too.The HV assy was one of the weak points
> >> on this model.
> >>
> >> --
> >> Jim Yanik
> >> jyanik-at-kua.net
> >
> >
> >
>
> Please remember I'm NOT disparaging your scope.
> I serviced many of them and they certainly were not the worst scope TEK
> ever made.
>
> --
> Jim Yanik
> jyanik-at-kua.net



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