Re: [CAD_CAM_EDM_DRO] Re: oscilloscope for CNC

On Sat, 28 Jun 2003 23:00:46 -0000, you wrote:

>--- In CAD_CAM_EDM_DRO@yahoogroups.com, Harvey White <madyn@i...> wrote:
>> On Sat, 28 Jun 2003 09:30:47 -0000, you wrote:
>>
>> >Hi everyone,
>> >
>> >I have a bit of extra money and am considering upgrading my digital
>> >meter to an oscilloscope :-)
>> >
>> >Anyone has any suggestion for the features I should look for, and
>> >perhaps even the model? I have been using steppers to date, and will
>> >likely upgrade :-) to servo or pseudo-servo later.
>>
>> dual channels, triggered sweep (a/b delayed is best). On screen
>> readout is a plus, but expensive. Minimum of 50 mhz bandwidth, 100 or
>> more is preferred.
>>
>> Much depends on what you plan to use it for. Microprocessor work
>> needs more bandwidth and more channels. Television/audio repair is
>> generally fine as is.
>>
>> Tektronix is good, Hewlett Packard is good, but there's an odd logic
>> to the design. Kenwood (!) is also good, the CS series scopes can be
>> available.
>>
>> I would consider a Tektronix 2000 series if you want portable, a
>> Tektronix 7000 series if you want mainframe and plugins, and perhaps a
>> 5000 series Tektronix if you want something that was further down the
>> food chain and less money.
>>
>> Stay clear of the tektronix 500 series, they are almost all vacuum
>> tube monstrosities from the '60s and '70s. You will probably not be
>> able to find tubes nor parts easily, and they will attempt to heat a
>> large automotive garage in use.
>There are a lot of Mil surplus USM-281's kicking around, The Tek and
>HP are good scopes, but some of the others I'd stay away from
>Expecially Dumont (USM-281E). They are not a good scope also stay away
>from the Tektronixs T series scopes.

You also might want to steer clear of telequipment, it is a foreign
made (european) version of the tektronix scopes, and while I have one,
and it is a good one, it is not quite up to the quality of Tektronix.

I'd forgotten about the T series scopes, and from what I remember,
it's definitely down on the food chain.

So far, I have not a good idea of *what* you want to do with a scope,
so I am only recommending a good general purpose scope.

Nor, for that matter, do I have an idea of your budget.

Harvey

>Bill Higdon
>> I'd recommend getting none of these new. Roughly what area are you
>> in? Simply because there are some resources in the Atlanta, Ga. area
>> that sell good oscilloscopes (he might even ship). You are talking
>> about 300 or so before shipping for a tektronix 2000 series, which
>> meets the minimum specs I laid out above. They are used. You might
>> also try the larger hamfests, which listings can be found at
>> www.arrl.org there's a hamfest link on their page.
>>
>> If you want small and cute, try www.allelectronics.com for a single
>> channel digital hand held scope. Runs off batteries, 10 mhz, 2
>> memories, one channel. It should be under the test equipment category
>> if they still have it. Roughly 160, or so, IIRC, It's a 10 Mhz scope
>> made by Velleman. I wouldn't recommend it for a primary scope, but
>> then again, I'm picky.
>>
>> Feel free to email me off list with more information, if you wish.
>>
>> Harvey
>>
>>
>> >
>> >Thanks
>> >
>> >Tanya
>> >
>> >
>
>
>Addresses:
>FAQ: http://www.ktmarketing.com/faq.html
>FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
>Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>
>Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
>Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
>List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@..., timg@...
>Moderator: pentam@... indigo_red@... [Moderators]
>URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>
>OFF Topic POSTS: General Machining
>If you wish to post on unlimited OT subjects goto: aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if you have trouble.
>http://www.metalworking.com/news_servers.html
>
>http://groups.yahoo.com/group/jobshophomeshop I consider this to be a sister site to the CCED group, as many of the same members are there, for OT subjects, that are not allowed on the CCED list.
>
>NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM. DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
>bill
>List Mom
>List Owner
>
>
>
>Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>