Let's consider the problem the other side ! Since I can't afford a KKKK$ tektronix or the like 100MHz oscilloscope, and since owon PDS5022S could fit my budget (250-300$), what won't I be able to do with such a scope (bandwidth: 25 MHz, 2 channels, 100MS/s, 8 bits resolution) ? Can you give me some examples of experiments I won't be able to monitor ? This would help me to discover my unknown needs...
Thanks Seb 2010/3/5 Sebastien Lelong <[email protected]> > Hi again, > > > 2010/3/5 vasile surducan <[email protected]> > >> Seb, >> >> you are going too fast again, but that's because of your age... you'll >> cure about it after 30. >> > > If you mean after the age of 30, since I'm almost 33, I guess I'm incurable > :) > > >> The toy you have pointed at isn't an 1MS/sec, but 1MHz analogic bandwith >> which is totally different. >> > > I don't understand, it's written "Max sample rate 1Msps 12Bits", doesn't it > mean 1 mega samples per second ? There's also "Analog bandwidth 0 - 1MHz"... > > >> Take a look to the schematic, try to understand it and you'll see that is >> less than 500Ksample/second (my appreciation is 200Ksample per second. >> >> A decent analogic tektronix of about 100MHz analogic bandwith has exactly >> the same price... >> > > $89 ??? Where ?! > > > Cheers, > Seb > > >> >> Vasile >> >> >> On Fri, Mar 5, 2010 at 8:24 AM, Sebastien Lelong < >> [email protected]> wrote: >> >>> Hi guys, >>> >>> >>> Thanks for your replies ! "it depends on what I need", and usually I >>> reply "I don't know !"... except: >>> >>> - cheap >>> - small (a big fat analog oscilloscope really isn't an option for me, I >>> just don't have room for this, but thanks a lot Vasile) >>> - easy to use, just turn power on. I don't like USB oscilloscope, they >>> work under windows (not Linux) and always require to a laptop near >>> >>> Now the real thing I don't know is how much MS/sec I need. For instance, >>> one usage was observing power spikes. I needed this on a circuit, a friend >>> helped me debug this, I really couldn't have fixed this without a >>> oscilloscope. Highly frustrating. This is a typical usage for me. I would >>> also need to see digital signals, like i2c, maybe serial,... well, I don't >>> know, but I feel this is for a very basic usage ? I also think by using an >>> oscilloscope I would better be able to understand what's going on behind the >>> scene, visually. The fact is I'm a software guy, not an hardware guy, and >>> probably won't ask myself very complex things (most complex thing for me >>> remains Ohm law :)). >>> >>> From what you say, Mike, this 1MS/sec DSO isn't good, not serious because >>> too low right (far above 5MHz) ? Here are some I had a look at the beginning >>> of this topic, if you have any advices...: >>> >>> - http://www.owon.co.uk/pdsSeries.asp : PDS5022S and PDS6042S are >>> affordable I think >>> - http://www.rigolna.com/products_ds1000.aspx : same for DS1022C and >>> maybe DS1042C. What is interesting is you can buy separately a logic >>> analyzer module. If needed... >>> >>> >>> Cheers, >>> Seb >>> >>> PS: reading this thread, I can see I said "About crossplatform GUI >>> toolkit [...] you can >>> use wxpython (I don't like this too much)". Ah ah, Jaluinoide is built >>> over Editra using wxPython, and I now like it quite much :) >>> >>> >>> >>> >>> 2010/3/5 vasile surducan <[email protected]> >>> >>>> If you need a real analogic scope ( a russian one) I can send you one, >>>> even a french one will be less expensive than the postage.... >>>> >>>> Vasile >>>> >>>> >>>> On Fri, Mar 5, 2010 at 7:41 AM, vasile surducan <[email protected]>wrote: >>>> >>>>> NO! >>>>> >>>>> >>>>> On Fri, Mar 5, 2010 at 6:23 AM, Sebastien Lelong < >>>>> [email protected]> wrote: >>>>> >>>>>> Hi guys, >>>>>> >>>>>> Un-burying this topic, with a pocket DSO from seeedstudio.com: >>>>>> >>>>>> >>>>>> http://www.seeedstudio.com/depot/micro-digital-storage-oscilloscopedso-nano-p-512.html >>>>>> >>>>>> Only one channel, analog bandwidth 0 - 1MHz, max sample rate 1Msps >>>>>> 12Bits, but tiny, and not expensive. >>>>>> >>>>>> What do you guys think ? Sounds reasonable ? >>>>>> >>>>>> >>>>>> Cheers, >>>>>> Seb >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> 2009/1/16 Joep Suijs <[email protected]> >>>>>> >>>>>>> Hi Seb, >>>>>>> >>>>>>> The schematics is on the polish site. Enclosed a PDF. >>>>>>> >>>>>>> - I used an atmel324 - pin names are the same, numbers are different. >>>>>>> - I intend to 'upgrade' the design to support pre-sampling and 128k >>>>>>> storage (in stead of 32k) and run at 20 MHz. This means the circuit >>>>>>> around the 7400 and 4040's will change a bit and there will be a >>>>>>> stack >>>>>>> of 4 memory chips - with a decoder on top - on my board. >>>>>>> (waiting for the memory to arrive - bought them for just over 10 euro >>>>>>> including shipping at ebay). >>>>>>> >>>>>>> Joep >>>>>>> >>>>>>> >>>>>>> 2009/1/16 Sebastien Lelong <[email protected]>: >>>>>>> > Ho Joep, >>>>>>> > >>>>>>> > Looks nice ! Waiting for schematics ! >>>>>>> > >>>>>>> > >>>>>>> > Seb >>>>>>> > >>>>>>> > 2009/1/16 Joep Suijs <[email protected]> >>>>>>> >> >>>>>>> >> Hi Guys, >>>>>>> >> >>>>>>> >> As mentioned before, we're working on a logic analyser. Hardware >>>>>>> is >>>>>>> >> atmel-based, programmed in c and pc program is c#. So it is >>>>>>> off-topic >>>>>>> >> ;) >>>>>>> >> >>>>>>> >> There has been quite some progress on the C# program and we almost >>>>>>> >> duplicated the functions of the original program. See >>>>>>> >> http://code.google.com/p/protocolviewer/ for more info. >>>>>>> >> >>>>>>> >> Joep >>>>>>> >> >>>>>>> >> >>>>>>> > >>>>>>> > >>>>>>> > >>>>>>> > -- >>>>>>> > Sébastien Lelong >>>>>>> > http://www.sirloon.net >>>>>>> > http://sirbot.org >>>>>>> > >>>>>>> > > >>>>>>> > >>>>>>> >>>>>>> --~--~---------~--~----~------------~-------~--~----~ >>>>>>> >>>>>>> You received this message because you are subscribed to the Google >>>>>>> Groups "jallib" group. >>>>>>> To post to this group, send email to [email protected] >>>>>>> To unsubscribe from this group, send email to >>>>>>> [email protected]<jallib%[email protected]> >>>>>>> For more options, visit this group at >>>>>>> http://groups.google.com/group/jallib?hl=en >>>>>>> -~----------~----~----~----~------~----~------~--~--- >>>>>>> >>>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> Sébastien Lelong >>>>>> http://www.sirloon.net >>>>>> http://sirbot.org >>>>>> >>>>>> -- >>>>>> You received this message because you are subscribed to the Google >>>>>> Groups "jallib" group. >>>>>> To post to this group, send email to [email protected]. >>>>>> To unsubscribe from this group, send email to >>>>>> [email protected]<jallib%[email protected]> >>>>>> . >>>>>> For more options, visit this group at >>>>>> http://groups.google.com/group/jallib?hl=en. >>>>>> >>>>> >>>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "jallib" group. >>>> To post to this group, send email to [email protected]. >>>> To unsubscribe from this group, send email to >>>> [email protected]<jallib%[email protected]> >>>> . >>>> For more options, visit this group at >>>> http://groups.google.com/group/jallib?hl=en. >>>> >>> >>> >>> >>> -- >>> Sébastien Lelong >>> http://www.sirloon.net >>> http://sirbot.org >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "jallib" group. >>> To post to this group, send email to [email protected]. >>> To unsubscribe from this group, send email to >>> [email protected]<jallib%[email protected]> >>> . >>> For more options, visit this group at >>> http://groups.google.com/group/jallib?hl=en. >>> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "jallib" group. >> To post to this group, send email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]<jallib%[email protected]> >> . >> For more options, visit this group at >> http://groups.google.com/group/jallib?hl=en. >> > > > > -- > Sébastien Lelong > http://www.sirloon.net > http://sirbot.org > -- Sébastien Lelong http://www.sirloon.net http://sirbot.org -- You received this message because you are subscribed to the Google Groups "jallib" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/jallib?hl=en.
