| Electronics > Beginners |
| Best Oscilloscope for complete beginner? |
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| rstofer:
--- Quote from: Gyro on April 19, 2019, 09:13:51 am ---I think this thread is loosing track of the fact that the OP - the author of "Electronic Circuits for the Evil Genius", is looking for something low cost to standardise on for an online course, that that has current availability. He can't really do that with a mixed bunch of miscellaneous second-hand analogue (or digital), or the more expensive stuff that might normally be applicable to single users. If you look at a copy of his book, you'll see that he hand-holds the readers quite closely. --- End quote --- The selection has already been made in Reply 10 - the Owon VDS-1022 - available at Amazon for $79 (about $100 for the isolated version, the VDS-1022i). This is about as 'entry level' as it gets and can probably reach a wider audience. There is an Oscilloscope Training Class as a sticky at the top of this forum: https://www.eevblog.com/forum/beginners/oscilloscope-training-class-(long)/ The Owon might be interesting for one of my applications. I play around with an analog computer and some form of graphic display is required. The required bandwidth is quite low and it might be nice to have a unit dedicated to the purpose. I don't want to tie up my AD2 and moving my DS1054Z between the bench and analog computer is kind of a drag. Maybe I'll give the Owon a try. It's not like I'm risking a lot of money. |
| rstofer:
An early EEVblog review of other USB Scopes: Here is a review of the OWON VDS1022i specifically: https://www.eevblog.com/forum/testgear/owon-vds1022i-quick-teardown-(versus-the-hantek-6022be)/ |
| Gyro:
--- Quote from: rstofer on April 19, 2019, 03:12:28 pm --- --- Quote from: Gyro on April 19, 2019, 09:13:51 am --- --- End quote --- The selection has already been made in Reply 10 - the Owon VDS-1022 - available at Amazon for $79 (about $100 for the isolated version, the VDS-1022i). This is about as 'entry level' as it gets and can probably reach a wider audience. --- End quote --- --- Quote from: rstofer on April 19, 2019, 03:37:07 pm ---Here is a review of the OWON VDS1022i specifically: https://www.eevblog.com/forum/testgear/owon-vds1022i-quick-teardown-(versus-the-hantek-6022be)/ --- End quote --- Err, I know. ;) ;D |
| Doctorandus_P:
I have bought both the "DSO138" and the "DSO SHELL" and I find them very dissapointing. The buttons of the 138 are a pretty bad user interface. The "Shell" has a rotary encoder and the user interface itself is usable, but some other limitations are too big to call these usable instruments. First, they pick up way too much noise. The STM32F103... used in these 2 toys are 10 bit converters, but they do not seem to manage to get more then 6 bit of usability out of them. This may be a PCB layout issue or maybe it's simply bad software, for example using the least significant digits of the ADC instead of the most significant digits. Another issue is simply bad overall software. Especially the way triggering is implented. You can somewhat change a trigger level to get a stable signal on the LCD, but the triggering itself is always off screen and you can not see the point on which the scope toy was actually triggered. If those issues were resolved the DSO Shell would have been a nice and usable instrument, even with it's limitations of small low resolution screen, limited functionality and small bandwith. Those are acceptable for an EUR 20 instrument. The "DSO Nano" and "DSO Quad" are also jokes. Horrible User interfaces (they may have improved on that) but they're too expensive. Just add EUR150 and buy a real scope. The "expeyes" may be interesting. It has been designed in India with the goal of education in mind. It can be combined with a PC or a phone for a UI, which keeps the price low. I also recommend to search for "gabotronics". On his website he made an overview of about 50+ scope like gadget things. If you're designing a coarse about electronics you also can go hardly around microcontrollers nowadays. For microcontroller debugging a Logic Analyser is a very usefull tool and I can highly recommend the very cheap (EUR 7 !!! ) LA's from Ali / Ebay / China. Just search over there for "24MHz 8ch", and use them with Sigrok / Pulseview. I have a Rigol scopoe myself, but when working with microcontrollers I often find the EUR 7 Logic analyser more usefull. On the AVRfreaks forum there is an old thread that is an introduction into using a LA for software debugging on small uC's. https://www.avrfreaks.net/comment/2421756 |
| alsetalokin4017:
--- Quote from: exe on April 19, 2019, 05:24:31 am ---I don't think there are special scopes for beginners, for professionals, etc. Just buy a good one, and learn how to use it. For complete beginners there is often "autosetup" button and "reset settings" buttons. Of course approach only works for people who a willing to learn. Also worth watching videos on safety, there are quite a few pitfalls due to common ground on probes. --- End quote --- The "autosetup" button is the most anti-learning button on the DSO. Students should not be permitted to use that button until they already know how to capture a signal manually by setting appropriate vertical and horizontal and trigger settings. In fact I note that some "entry level" scopes that might be found in classrooms have this button disabled, deep in a menu. You can even disable it in the Rigol DS1054z. I am of the school of thought that says absolute beginners should absolutely begin on an analog scope. Hopefully it will last long enough for the student to figure it out. Then when it goes wonky, get a decent DSO to help fix the analog scope. |
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