RE: [CAD_CAM_EDM_DRO] Re: DSO Oscillosope

Hi Mariss -

I searched ebay for the scopes you recommended, and ran across a
Tektronix 2230 analog/digital DSO. Are you familiar with this?
Would you recommend it?
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1763445024

TIA,

Carlos Guillermo
VERVE Engineering & Design

-----Original Message-----
From: mariss92705 [mailto:mariss92705@...]
Sent: Tuesday, September 03, 2002 1:05 AM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Re: DSO Oscillosope

Peter,

In a perfect world I would first have a "real" scope, then a DSO
and
finally a PC based scope, in that order.

A "real" scope is an analog 2-channel 100MHz one. It is faithfully
displays what is really there. Non-periodic waveforms are a
problem
of course but a scope with good writing speed gives you a chance.

The advantage of an analog scope is it is not suceptable aliasing
artifacts that improperly setup DSOs are. Really good analog
scopes
are Tektronix 465 which can be had for a song now. Another good
choice is a Tektronix 2247 though its trigger, focus and writing
speed leaves much to be desired.

A good DSO would be a Tektronix TDS360. Not real fast but good for
most applications. I always double check it with an analog scope
before I rely on its readings though.

PC based scopes I don't really trust. I have compared their
results
against an analog scope and the results have ranged from mediocre
to
terrible. Given the choice, I would pick a good used DSO over a PC
scope any day of the week.

Just my 2 cents worth.

Mariss