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From: Jim Yanik
Subject: Re: How to build your own Oscilloscope?
Date: Mon, 23 Sep 2002 01:07:14 +0000 (UTC)
Organization: Friends of Lummox
References: <0vcj9.172680$Jo.55878@rwcrnsc53> <email@example.com>
NNTP-Posting-Date: Mon, 23 Sep 2002 01:07:14 +0000 (UTC)
"laurence cope" wrote in
> thats easy
> if it's for audio a 20mhz dual beam analogue scope will do.
> if it's for rf then a 300mhz scope will fit the bill.
> if it's for digital signals or intermittent signal capture then it's
> got to be a digital the more the sample rate the better.
> I use a tektronix 2211 it's the best of both worlds it has a fairly
> high sample rate and a medium wide bandwidth, it's both analogue and
> digital on a crt and not tft.
> Best of all it only cost £300.
> I have also the latest digital 4 channel tek scope mega high sample
> rate, tft, floppy drive, printer port, ethernet and serial comms, all
> the biz, it's on loan however.
> Give me the 2211 anyday, it's far easier to drive, with the new tek it
> took ages to get round all the buttons.
> "The little lost angel" wrote
> in message news:firstname.lastname@example.org...
>> On 22 Sep 2002 11:20:19 -0700, email@example.com (Glenn Gundlach)
>> >Just looked at eBay. Tek 475 dc-250 mHz less than $100. If you have
>> >a computer, I bet you can afford $100. Tek 3012 DPO starts at $3000.
>> sorry to butt in but how does a newbie know if the oscope is working
>> or not? I want to get a scope but know next to nothing about chosing
>> one :D
There's a difference between "dual-beam" and dual-TRACE o'scopes.
A dual-BEAM scope has two separate electron guns generation 2 beams,and
each beam has it's own V deflection plates,sharing the H-deflection.
A dual-TRACE scope chops or alternates between channels,displaying on the
dual-beam scopes are fairly rare. TEK 7844 was a dual beam scope.
Jim Yanik,NRA member
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