> At eevblog.com forum Chinese scopes are a daily discussion for over 3 > years. > > In summary, in the <= 100 MHz level they are very cost effective but there > are better and worse. Rigol, Owon and Hantek are on par while Atten and > Uni-T are consistently rated less. The criteria for rating them are > measurement accuracy and precision, UI, construction quality and tech > support.
Measurement accuracy is a ruse, IMO. I don't care if a 'scope is "accurate". I want the waveform to be a faithful representation of the electrical behaviour of the circuit, free oif sampling artifacts and aliasing. If I want to accurately measure a voltage, I'll use a differential comparator or DVM. Anything timing, an appropriately gated counter. Some years ago Tektronix had a digital camera package with RS-170 output and some aardvaark frame grab board for a PC and a SW package. It was designed to do waveform measurement. I would actually like to know why many seem to feel that a 500 MHz analog 'scope is not "good enough" for what you really do in your lab? The more I hear about 40 GSps or whatever 'scopes, the more I'm convinced it's like comparing car engines or top speed. So, I have a car that'll do 160 MPH and yours will do 172? So what? Can you use it? No. YMMV, -John ================ > Prices vary depending on country, and local support varies. Those > differences will help you choose between the better 3 brands. > > Rigol is consistent in quality all around, but cost more than the others. > Rigol is the only maker with scopes that compete with Agilent or Tek, in > the 1-4 GHz level. Support is mostly via the sellers. In the USA, Rigol > has a subsidiary that provides responsive support. > > Owon and Hantek offer larger screens, more features and better GUI, but > can be plagued with construction flaws. Its acceptable if your seller > will exchange any defective units you purhcase. Owon has provided tech > and hardware support directly from China, including spares. > > Atten and Uni-T glitches are concerning, as they tend to provide erratic > measurement. > > > At 04:19 04/16/2012, time-nuts-requ...@febo.com wrote: > Message: 7 > Date: Mon, 16 Apr 2012 09:46:27 +0200 > From: Attila Kinali <att...@kinali.ch> > To: li...@lazygranch.com, Discussion of precise time and frequency > measurement <time-nuts@febo.com> > Subject: [time-nuts] Chinese Scopes (was: Re: LORAN-C at MIT) > Message-ID: <20120416094627.f245ebdfd5df7305dd528...@kinali.ch> > Content-Type: text/plain; charset=US-ASCII > > On Sun, 15 Apr 2012 22:42:31 +0000 > li...@lazygranch.com wrote: > >> Sadly, the last scope I bought was a Chinese Rigol. (I do have "real" >> scopes too.) It is getting to the point where Rigol and Instek will make >> buying boat anchors a thing of the past. > > What's the quality of those chinese scopes? > I could need a "modern" DSO as addition to my stone age 2ch 50MHz Tek. > But there isn't any usable surplus market in europe and used scopes cost > nearly as much as new ones. Ie Tek, Agilent and LeCroy are out of my > budget, > even if used. But then, i'd rather spend 2000chf on a new Scope than get > one for 500 that isn't half usable. > > Attila Kinali > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.