Title: How to buy an oscilloscope? What/How to look at? Post by: slayeru2 on June 29, 2013, 08:45:36 20:45 Hi Everyone,
Im still very new to Electronics and as i learn more about electronics, i seem to get the oscilloscope word more often. Well i know what oscillope is used for but i really dont understand the thumb rule of buying oscilloscope: Which is 5x Analog bandwith, 3x Digital Bandwidth and my problem is how to know the analog bandwith? and for the digital I think the bandwidth is the clock frequency i guess so, So anyone here can please recommend me an oscilloscope for working with arm-m3 or m4 processors and for the analogue part i want to work with power electronics btw by asking this question, you may understand that im not electronic engineer, actually im not an enginner also but i like electronics very much and its somewhat hard, but funny. Title: Re: How to buy an oscilloscope? What/How to look at? Post by: MAXPAYNE on June 30, 2013, 04:10:47 04:10 I guess your are interested in using oscilloscope for power electronics. Well, I dont know your budget. But you ca start with Rigol DS1102E (100MHz, 1Gsps). If your budget permits more, go for Agilent Infiniivision 2000 Series ...
Title: Re: How to buy an oscilloscope? What/How to look at? Post by: Gallymimu on June 30, 2013, 06:01:18 06:01 Learn about Nyquist Theorem. That is the fundamental basis of sampling bandwidth requirements.
If you are working with microprocessors exclusively you might get away for quite some time with a logic analyzer instead of an oscilloscope. Title: Re: How to buy an oscilloscope? What/How to look at? Post by: slayeru2 on June 30, 2013, 02:50:27 14:50 Thanks for replies, btw i like to work with microcontrollers alot but eventually i will also work with non microcontrollers projects also, so im looking to buy an oscilloscope that can make me work most of the electronics projects, i just checked out the logic analysers well is there a guide for what to look at logic analysers, like maybe bandwith or anyother properties/specs?
im just hungry for information and like to try out new ideas/projects and i want to make my workplace so i think i need some staff around the developement boards and debuggers as well. But what i really dont know is how do you chose that you need an oscilloscope/logic analysers/spectrum analysers and how to choose which one is broader range for many things, like i dont think i will work with microwaves but what else should be there in workshop to better understand electronics or debugging electronics. Title: Re: How to buy an oscilloscope? What/How to look at? Post by: Catcatcat on June 30, 2013, 05:22:32 17:22 (http://voron.ua/files/pic/programmator/saleae_02_250.png)
According to the logic analyzer recommend reading here http://www.saleae.com/logic (http://www.saleae.com/logic), and buy from the Chinese http://item.taobao.com/item.htm?spm=a1z10.3.0.79.fvqffa&id=17867516734& (http://item.taobao.com/item.htm?spm=a1z10.3.0.79.fvqffa&id=17867516734&). In version 1.16 supports the Atmel SWI, BiSS C, CAN, DMX-512, I2C, I2S/PCM, JTAG, LIN, MANCHESTER, MDIO, 1-WIRE, PS/2, Async Serial, SPI, Simple Parallel, UNI/O, USB 1.1. (http://forum.voron.ua/MGalleryItem.php?id=41) Title: Re: How to buy an oscilloscope? What/How to look at? Post by: Gallymimu on July 01, 2013, 03:44:56 03:44 Buy the real Saleae if you can afford it. They deserve the money for their hard work instead of giving it to the cloners.
But if you must buy a clone it can be had for less than mentioned above. If you search for CY7C68013 on ebay you can usually find $10 dev boards that are compatible with the Saleae firmware. They made some changes to try to prevent clones but there are work arounds. Title: Re: How to buy an oscilloscope? What/How to look at? Post by: slayeru2 on July 01, 2013, 12:17:28 12:17 Hi Everyone,
I have found a tool for my little workshop :PicoScope 6404B 350Mhz Oscciloscope + AWG (Function generator and Arbitrary Waveform Generator) + Can be used as Logic Analyser with serial decoding staff For you guys to http://www.picotech.com/picoscope6400-specifications.html (http://www.picotech.com/picoscope6400-specifications.html) check it Btw this is a usb based oscilloscope and needs a pc to be able to work but for me, i do all my electronic staff/testing near a pc so np for me eighter. And it has a nice software which i just checked the video tutorials + read some of the manuals about it So what do you think of it? Is this a good product investment or shall i buy seperate oscilloscope + AWG + Logic Analysers seperately? Title: Re: How to buy an oscilloscope? What/How to look at? Post by: Catcatcat on July 01, 2013, 12:52:10 12:52 For what price is better to buy the instruments separately, and full instrumentation (no usb-top boxes)
Title: Re: How to buy an oscilloscope? What/How to look at? Post by: spirakos on July 01, 2013, 03:53:16 15:53 Pay once for a life
http://www.ebay.co.uk/itm/Rigol-DS1052E-digital-Oscilloscope-50MHz-1-GSa-sec-2-channels-plus-USB-storage-/270851051021?pt=BI_Oscilloscopes&hash=item3f0ffb0e0d Or just pay to play http://www.ebay.co.uk/itm/2-Channel-PC-Digital-Storage-USB-Oscilloscope-Probe-CD-/221113773504 Title: Re: How to buy an oscilloscope? What/How to look at? Post by: Old_but_Alive on July 01, 2013, 05:00:16 17:00 I recently bought an OWON DS7102 , complete with battery, it works isolated from earth etc.
Its got a big 8" colour LCD, and is good plenty of suppliers from ebay. Title: Re: How to buy an oscilloscope? What/How to look at? Post by: millegps on July 01, 2013, 08:16:35 20:16 I have an Owon SDS7102V since a couple of months.
Big display, ethernet and also vga out Posted on: July 01, 2013, 09:08:54 21:08 - Automerged I have also a chinese clone of Saleae, but they are really 2 different things. It dependes what you are looking for. Salee is useful for protocol analysis, but you need to know what you are looking for. Title: Re: How to buy an oscilloscope? What/How to look at? Post by: Gallymimu on July 01, 2013, 08:17:39 20:17 Hi Everyone, I have found a tool for my little workshop :PicoScope 6404B 350Mhz Oscciloscope + AWG (Function generator and Arbitrary Waveform Generator) + Can be used as Logic Analyser with serial decoding staff For you guys to http://www.picotech.com/picoscope6400-specifications.html (http://www.picotech.com/picoscope6400-specifications.html) check it Btw this is a usb based oscilloscope and needs a pc to be able to work but for me, i do all my electronic staff/testing near a pc so np for me eighter. And it has a nice software which i just checked the video tutorials + read some of the manuals about it So what do you think of it? Is this a good product investment or shall i buy seperate oscilloscope + AWG + Logic Analysers seperately? I have a friend who is a veteran power electronics designer. He said good things about the picoscopes. Title: Re: How to buy an oscilloscope? What/How to look at? Post by: diaz on July 01, 2013, 11:19:29 23:19 There are good few videos on Youtube explaining what to look for, EEVBlog and W2AEW have videos on the subject. They explain the sampling rates and features better than I could.
I will second the mention of the Saleae, it's a very good tool. Also got a Owon SDS7102V and like it, although if I had more money my next step would be the Rigol DS2000 series, the refresh rate and the intensity graded display look like lovely features to have. Be very careful using a battery powered scope such as the Owon on live mains, the BNC connectors are not insulated, touch one while the other is in a live circuit and it ouch time. In fact touching any grounded part of the scope will result in a shock, even the exposed mains inlet, probably even case screws. Better to get a differential probe, but expensive, look on eBay (£200 ish currently). Or an isolation transformer, cheaper. I would advice stretching your spending on an oscilloscope and it could be a tool for life. Scopes are worth their weight in gold, even my old analogue 20Mhz Trio scope was the best debugging tool I EVER owned at the time. Title: Re: How to buy an oscilloscope? What/How to look at? Post by: diaz on July 03, 2013, 07:37:10 19:37 Actually if I was in your position again I would buy the Rigol DS2072, and use this hack http://freneticrapport.blogspot.co.uk/2013/07/raspberry-pi-rigol-ds2072-200mhz.html (that won't void your warranty) to:
The last three represent an extra value of 580 GBP in the UK. They are simply unlock codes that you purchase and enter in to the scope as I understand it. It's a hell of a scope on it's own never mind the freebies. In fact I am seriously considering selling my Owon DS7102V and my Link Instruments DSO-8502 PC scope to fund it. EDIT: Above stuff sold ! Now waiting for delivery of my Rigol :) Title: Re: How to buy an oscilloscope? What/How to look at? Post by: Pice on July 28, 2013, 05:06:50 17:06 Now it's finally been done! Thanks to cybernet and friends from the EEVBlog forum,
there is now a keygen available that turns the DS2072 into a 200MHz DS2202 and enables all the options permanently (extra mem, fancy triggers and serial protocol decdoders). No need for the solution posted above anymore. Check out this thread here http://www.sonsivri.to/forum/index.php?topic=53230.0 for more details. The DS2072 retails for $839 at the moment. For comparison the MSRP for this setup is $2,404 ($1,626 for the 200 Mhz scope + $778 for the options ) IMHO The best bang per buck by far. |