8 Apr
2005
8 Apr
'05
5:50 p.m.
At 03:56 PM 4/8/05 +0200, you wrote:
Well, if you want the original 'Dec Fieldservice Oscilloscope', you
need to get the Tektronix 645B. They are widely available 2nd hand,
look at your favourite auction website for one. Proces vary between
$100 and $200.
I think you mean Tek 465 not 645. The Tek 465s are ^H^H^H WERE great
scopes. An all time classic IMO. BUT now they all seem to be developing the
"bad capacitor" syndrome and that can be a real pain to repair. The last
one that I bought used a plastic push rod to operate one of the plastic
switches located well inside the unit. It was ok when I bought it but as
soon as I tried to use it the plastic crumbled so that's another problem
due to aging. If you're considering a 465 I'd suggest that you check it out
thoroughly before buying.
I recently bought a Tek 2445* and I'm pleased with it. It's series has a
bad reputation because they use hybrid parts in them that are failur eprone
and impossible to obtain. As a result scopes in the series sell cheap.
However the 2445 doesn't use the hybrids so it's cheap, reliable and
repairable (I hope!)
* 4 channels, automatic setup, on screen readouts, 150 MHz.
Joe
No idea though where to find a website teaching scope usage, but maybe
Tony Duell know a few????
I don't know about websites but In the 60's they published a number of
small cheap "how to use a scope" type books that were quite good. You
should be able to find some of them in used book stores, E-bay, libraries,
etc. Howard Sams Co seemed to also have good books in those days.
Joe
Ed
I'm rapidly approaching the point where I
will
need to learn how to use an oscilloscope as part
of my quest to learn more about debugging the
old DEC hardware. What kind of advice can folks
offer to me about a decent scope and some info on
how to use one? I think I used one 30 years ago
in school, but it's been so long that I remember
little-to-nothing about it.
One of my first exercises might be to attempt
a head alignment on an RK05 drive using an
alignment pack. I have all the documentation
for the drive maintenance, etc.
What kind of scope would I need and how much does
one cost? Are there any good web sites that
would give some basic info on "scopes for dummies"
or "scopes for beginners"?
Thanks in advance for your advice. This is
a never-ending learning experience.
Ashley