Re: O-scope question...

On Thu, 06 Nov 2008 11:30:28 GMT, "David L. Jones" <altzone@xxxxxxxxx>
wrote:


"Phil Allison" <philallison@xxxxxxxxxx> wrote in message
news:6nfe81FlfhteU1@xxxxxxxxxxxxxxxxxxxxx

"sbrehler"

I'm going to be doing mostly educational work right now (I have a
two-year degree in Electronics, but will be persuing my EE this spring).
But I do like the thought of the DSO's due to the wide range of functions
they posess. One thing that I'm concerned about is "aliasing." I will be
working mostly with discrete components and microcontrollers with
relatively low frequencies/clock speeds; will a DSO present any
difficulties along those lines. From what I'm reading, it appears that a
very low "sampling rate" can cause erroneous measurments. I've heard
others mention in the past something about "real time" issues (perhaps
due to the sampling problem?). When would one want to have a very low
sample rate? It would seem to me that the higher the better. Anyway, I'm
a little confused right now...


** Seeing as you are not familiar with using scopes at all - it would be
VERY wise to make your first scope an analog type.

Analog scopes do not play nasty ( ailiasing) tricks on you like digital
ones do - so are straight forward to use AND produce a MUCH cleaner,
more detailed and informative trace to view.

Plus, once you know how to use one of them, you will find any other analog
scope easy to drive to.

The same is not true of digital sampling types.

While I agree in principle with Phil here, I would still recommend you spend
your money on a digital scope without reservation, it will be a much more
valuable tool for you. Infinitely more "bang-per-buck".

Absolutely. Color, infinite storage, signal averaging, pre-trigger
views, FFTs, small size, light weight, low power consumption. I rarely
use analog scopes any more... just the Tek 7104 1 GHz microchannel
beast, now and then.

John

.

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