On Friday, 15 February 2019 23:43:11 UTC, ehsjr wrote:
On 2/15/2019 2:42 PM, wrote:
On Thu, 14 Feb 2019 15:59:01 -0500, Ralph Mowery
wrote:

In article ,
says...

The DSO 'scope should probably be new or fairly new. I don't know
how much bandwidth but it would be used for both hobby audio stuff and
for looking at the type of signals found in CNC controls. Right now
the 465B is plenty good enough, way more than good enough, to look at
signals from the CNC machines but it is a big pain to use much of the
time and a light 'scope that I can hang in a CNC control cabinet would
be great.
My budget is about $100 for the analog and $300 for the DSO.
So, any advice? Did I leave out something?



Look at this Hantek scope. I bought one a couple of years ago. It
should come with the probes.

https://www.circuitspecialists.com/h...gital-storage-
oscilloscope-dso5202p.html

There are a few other DSO scopes at the same place.

Now I have two 'scopes to compare. The Hantek is a 200 MHz bandwidth
and the Rigol is only 50MHz. Just how much bandwidth should I be
looking for?
Thanks,
Eric


The 50 MHz Rigol is fine for most people, most of the
time. It's a good 'scope. I don't have any experience
with the Hantek, so I can't comment on it, but you don't
need 200 MHz for CNC and audio.

The standard answer might be "buy as much bandwidth as
you can afford" or "it depends on what signals you need
to see".

Selecting which 'scope to buy can drive you nuts. I
feel your pain. :-)

Ed

I was offered a 1940s Cossor recently for £20-30. 339A I think it was, the world's first modernish scope. But no possibility to calibrate it, they were't accurate enough then to bother making them calibratable. I said no

If all you're doing is audio, any halfway sane scope will do that, even that Cossor.


NT