A new oscilloscope with wifi/lan/usb on indiegogo.com - Page 1
Forum section: electronics / general

author: c9981
author_rank: Newbie
timestamp: June 03, 2015, 01:01:18 pm
content: Deleted !

author: Monkeh
author_rank: Super Contributor
timestamp: June 03, 2015, 01:28:13 pm
content: You could at least try to use the right USB socket.

author: TheAmmoniacal
author_rank: Unknown
timestamp: June 03, 2015, 01:38:29 pm
content: What do you mean by ETS?

author: Monkeh
author_rank: Super Contributor
timestamp: June 03, 2015, 01:52:56 pm
content: Quote from: c9981 on June 03, 2015, 01:51:14 pmI think we all know wifi is wireless. The point was, you have two USB-A sockets. For a USB device.Please don't regard us as dumb enough not to know the difference between an 8P8C and a USB socket.

author: tggzzz
author_rank: Super Contributor
timestamp: June 03, 2015, 02:25:44 pm
content: Quote from: blueskull on June 03, 2015, 01:13:18 pmHigh speed scopes usually have a 50ohm input impedance.Traditional 1Mohm *10 probes are limited to, at best and with great care, a bandwidth of a few hundred MHz. "Low" impedance Z0 probes go to several GHz. Seehttps://entertaininghacks.wordpress.com/library-2/scope-probe-reference-material/The 50GS/s is more or less meaningless, since the front end bandwidth is a boring 50MHz!

author: Monkeh
author_rank: Super Contributor
timestamp: June 03, 2015, 02:28:13 pm
content: Quote from: c9981 on June 03, 2015, 01:59:46 pmhttp://www.usb.org/developers/docs/usb20_docs/usb_20_060115.zip

author: suicidaleggroll
author_rank: Super Contributor
timestamp: June 03, 2015, 03:52:15 pm
content: Quote from: c9981 on June 03, 2015, 01:59:46 pmUSB connectors areclearlydefined. Type A for host, type B for device. Youdo notuse a type A connector for a device.

author: Monkeh
author_rank: Super Contributor
timestamp: June 03, 2015, 05:06:38 pm
content: Quote from: c9981 on June 03, 2015, 04:59:14 pmOnly in cheap, non-compliant garbage!QuoteIf you want to do it properly and allow people to use normal cables, you must use the correct connector.

author: suicidaleggroll
author_rank: Super Contributor
timestamp: June 03, 2015, 05:10:41 pm
content: Quote from: c9981 on June 03, 2015, 04:59:14 pmYes, it is.Quote from: c9981 on June 03, 2015, 04:59:14 pmNo, it's not. I have never seen a device that is supposed to use an A-A cable. The mere existence of these cables is a mystery to me. I have never seen one in person, and I can not think of any application that should use one.

author: Monkeh
author_rank: Super Contributor
timestamp: June 03, 2015, 05:12:22 pm
content: Quote from: suicidaleggroll on June 03, 2015, 05:10:41 pmIt is sadly quite common for nasty crap from China to use them. I guess it's cheaper somehow.

author: Monkeh
author_rank: Super Contributor
timestamp: June 03, 2015, 05:30:35 pm
content: Quote from: c9981 on June 03, 2015, 05:28:31 pmMy sincere apologies. Is 'low quality goods of dubious value' more to your liking?Allow me to attempt to clarify: There is no such thing as USB A-A. It is not USB. It cannot be, for it does not comply with the standards which define USB.

author: Marco
author_rank: Super Contributor
timestamp: June 03, 2015, 05:33:39 pm
content: Quote from: blueskull on June 03, 2015, 01:13:18 pmIt's BNC, it's clearly just bullshit which hurts them more than helps, especially here ...This isn't a high bandwidth sampling scope with some DIY sampling gate or high speed comparator.

author: ataradov
author_rank: Super Contributor
timestamp: June 03, 2015, 06:01:57 pm
content: Flexible funding campaign for some piece of Chinese junk. Just pictures of PCBs and software as separate perks, that's rich.If you really need a PC-based scope, just get a PicoScope.

author: free_electron
author_rank: Super Contributor
timestamp: June 03, 2015, 06:16:56 pm
content: This could be an interesting product. but i have a couple of technical questions.64 samples to 4K of memory. That's very small... i'd like to see a few megs of memorypretrigger/posttrigger ?you have an 8 bit a/d convertor. how do you make 14 bits out of that ? or is there a misunderstanding somewhere.input frequency for the logic analyser 250Mhz. but the sample clock is 100Mhz ?0..5 volt input levels on the logic analyzer. what is the trigger level of the channels ? is it programmable ? ( i work on 1.2 and 1.8 volt logic. )screen refresh rate ? how many waveforms a second ? i don't want a machine that takes a second to refresh its screen.

author: Bud
author_rank: Super Contributor
timestamp: June 03, 2015, 06:44:54 pm
content: I' d think refresh rate and speed in general will be limited by html5 performance.And by the way, html based software would be the last thing i would be willing to use for test gear.

author: miguelvp
author_rank: Super Contributor
timestamp: June 03, 2015, 06:47:49 pm
content: Quote from: Bud on June 03, 2015, 06:44:54 pmWebsockets are bidirectional TCP/IP I don't see any problem with that part at all.

author: free_electron
author_rank: Super Contributor
timestamp: June 03, 2015, 07:22:37 pm
content: Quote from: c9981 on June 03, 2015, 06:35:53 pmgood. but i'd like to see deep memory. 4k samples is nothing. a 54620 could do that 30 years ago...Quoteah, i see. what is the dac used for on the y scale ? are you using it to apply a dc offset to the input before digitizing ?Quoteehh , you cant digitize a 250MHz signal with a 100MHz clock... especially not for a logic analyser. or are you combining input channels and interleaving them ?also, i see a lot of these logic analyser thingies that use simply wires with grabbers at the end. no signal termination , no protection no shielded signals. kinda hard to convince me you can reliably trap signals over 100MHz.Quoteok so you use the FPGA I/O voltage . does the FPGA have embedded schmitt triggers at its input ? or do we rely on 3.3 V CMOS levels. if you use a dedicated i/o bank of the FPGA and you feed that from a programmable voltage regulator you could actually program the input levels.Quotewhat is the dead time ? does the system keep capturing or is it frozen while refreshing the screen ?

author: janoc
author_rank: Super Contributor
timestamp: June 03, 2015, 08:18:03 pm
content: Quote from: suicidaleggroll on June 03, 2015, 05:10:41 pmI did - the PQ Labs touch screen overlays use that, along with a special A-A cable. It doesn't make it any less retarded, though.

author: janoc
author_rank: Super Contributor
timestamp: June 03, 2015, 08:26:07 pm
content: Quote from: c9981 on June 03, 2015, 07:54:50 pmNo offense, but the last thing I want to do with a scope is to do web programming on it. People buy oscilloscopes to debug hardware, not to tinker with them. If this is the only advantage/selling point, then this is a toy and not a serious instrument. If a custom presentation of the measured data is needed, then a far more useful option is to be able to export the measurements in some sensible format so that they can be processed on a computer - e.g. in Matlab, Excel, what have you. Nobody is going to develop web apps for your scope, sorry.

author: Monkeh
author_rank: Super Contributor
timestamp: June 03, 2015, 08:39:22 pm
content: Quote from: c9981 on June 03, 2015, 07:54:50 pmWhy the **** would I buy a $300oscilloscopeto do that?

author: ataradov
author_rank: Super Contributor
timestamp: June 03, 2015, 09:15:44 pm
content: I can take chips from famous companies too, it does not mean I will arrive at a design that has claimed performance. So far there is nothing to confirm any of your claims about quality of the product.Show us some captured traces under different conditions and all this kind of stuff.But again, at that price, it is not going to happen. You can buy a real scope for $300 designed by people, who use correct USB connectors, and work with it, instead of doing web-design.

author: ataradov
author_rank: Super Contributor
timestamp: June 03, 2015, 09:23:29 pm
content: Traditional scope is piece of hardware that sits on my desk. It can optionally connect to PC.Simply being new, does not make it good or useful.

author: ataradov
author_rank: Super Contributor
timestamp: June 03, 2015, 09:32:26 pm
content: Yes, and you have not shown us why this is good.Working on a tablet? I have probes in my hands when I use the scope, there is no way for me to hold the tablet. And if I put down the tabled, how it would be different from a real scope?What's wrong with wired connectivity? I'm not going anywhere from my scope.

author: c4757p
author_rank: Super Contributor
timestamp: June 03, 2015, 09:37:35 pm
content: I don't understand what's so big about it using HTML 5. That's a tool you use to make it, not something that should affect how we use it...I gather there's a bit of a language barrier here preventing you from explaining why we should want this, but yeah... I don't know why I would want this.It sounds like someone was looking for a problem to solve using HTML 5 and said "I know! I'll make an oscilloscope!", completely forgetting that the latter part of the idea is the hard part.

author: free_electron
author_rank: Super Contributor
timestamp: June 03, 2015, 09:42:36 pm
content: i think this idea is usefull a you can connect a frontend wirelessly to a visualisation system without being restricted by an operating system ( the endless windows / limux / mac discussion) and having GALVANIC ISOLATIONany device that has a browser supporting html 5 can be used. you coudl even use a cheap chromebook or android tablet.the key for me is the galvanic isolation as it runs over wifi.but , before we get there i also want to see some hardware performance.a scope is foremost defined by- bandwidth- sampling speed- sampling accuracy ( vertical bit depth )- memory depth- blind time- trigger capabilitieslogic analyser- memory depth- sampling speed- pattern and protocol triggeringso far we know very little about the lump of hardware there.

author: tggzzz
author_rank: Super Contributor
timestamp: June 03, 2015, 09:43:57 pm
content: Quote from: c9981 on June 03, 2015, 09:29:20 pmThose arefeatures. Nobody cares about features. People care aboutbenefits, so tell us how we wouldbenefitfrom those features. Note: that implies a comparison with other ways we can achieveour objectives.

author: ataradov
author_rank: Super Contributor
timestamp: June 03, 2015, 09:47:24 pm
content: Quote from: c9981 on June 03, 2015, 09:44:53 pmMay be, or may be not. That's called market research, and you do it before designing a product. Right now you have designed a product and asking us to help you with selling it to a non-existing audience.Quote from: c9981 on June 03, 2015, 09:44:53 pmAnd that's shows.

author: ataradov
author_rank: Super Contributor
timestamp: June 03, 2015, 10:28:22 pm
content: Quote from: c9981 on June 03, 2015, 10:21:21 pmYou don't. That's the point. Crowd funding is designed (ideally) so you could use the economy of scale, it is not a shop or preorder system.If you can make single quantities for $300 already, why not just put a "buy" button on your site and don't make people wait 30 days?

author: Bassman59
author_rank: Super Contributor
timestamp: June 03, 2015, 10:34:45 pm
content: Quote from: suicidaleggroll on June 03, 2015, 05:10:41 pmThe local computer/electronics shop carries A-A cables (not the extension type), and I can't imagine that they've ever sold any, as there is literally no reason for the cables to exist. Next time I am in, I will ask if any ever sold.

author: c4757p
author_rank: Super Contributor
timestamp: June 03, 2015, 10:38:23 pm
content: Quote from: tggzzz on June 03, 2015, 09:43:57 pmDunno, that can lead to some terribly inscrutable kickfartery business crap sometimes. MumbleMumble will revolutionize your mumble by leveraging mumble to obfuscate mumbled mumbles! With MumbleMumble you can mumble your mumble while you mumble your mumble!Yeah, but whatisit? Half of these you can't even tell what the product is because they think it's so unique as to be practically ineffable. At least this dude is direct in stating what it is. I'll take that any day over a salesman who tries to tell me all about how it'll change my life.I still don't want the product, but at least now Iknowthat I don't want it...(and f_e is right, it has potential. I can see quite a few people being interested in it if it were a bit more polished.)

author: Mr.B
author_rank: Unknown
timestamp: June 03, 2015, 10:43:56 pm
content: Quote from: Bassman59 on June 03, 2015, 10:34:45 pmI have encountered devices with this requirement once.A couple of years ago we had a bunch of Huawei cellular desk phones that required USB A-A cable to flash firmware.It was so painful to try to source a cable that I ended up making my own.The firmware was so buggy we binned all of them in the end.Huawei... Made in China...

author: miguelvp
author_rank: Super Contributor
timestamp: June 03, 2015, 10:51:53 pm
content: Myself I think html 5 is an interesting prospect, although it depends what kind of processor drives it since it would be essentially a web server. Maybe a Cyclone/SoC from Altera might be up to the task but then you would be able to drive the screen directly.The problems I see with this device are:1) poor specs to make it competitive at that price.2) flexible funding, because if you don't reach your goal you might decide not to refund the money. But I guess backers can pull the funds until the last minute, not sure since I never did back an indigogo project.

author: ataradov
author_rank: Super Contributor
timestamp: June 03, 2015, 11:12:22 pm
content: If regular campaign is not successful IGG will not charge any money in a first place, so you won't have to refund anything.

author: tggzzz
author_rank: Super Contributor
timestamp: June 03, 2015, 11:42:07 pm
content: Quote from: c4757p on June 03, 2015, 10:38:23 pmEasily detected... All you have to do is invert the statement; if it is ridiculous then the original statement was content-free motherhood and apple pie.

author: Bud
author_rank: Super Contributor
timestamp: June 04, 2015, 04:24:36 am
content: Quote from: c9981 on June 03, 2015, 09:21:51 pmMy friend, have you ever done troubleshooting electronics on the bench using a scope? No one gives shit for wifi and stuff when spending hours troubleshooting or prototyping. You really think people will be sitting with their phones and poking fingers in damn phone screen? Leave tablets and phones to teenagers, focus on usability of your product on the bench, this is where this type of equipment is used the most.

author: Galenbo
author_rank: Super Contributor
timestamp: June 04, 2015, 07:39:31 am
content: Quote from: c9981 on June 03, 2015, 09:44:53 pmWhy are you doing that indiegogo thing? It's for loosing time and money to scam artists.Stop making your product ridiculous by scamming money for digital pictures or network cables.I saw your video, it looks like your product is working.Send it to someone for a review, the guy has to be like this:- is a professional daily/weekly scope user.- knows absolutely nothing about your product, does not know you well, gets only product+manual, no explanation or extra info.- speeks the same language as the customers you want.Let him test it, let him make remarks, recommendations, comparisons.Back tot the table to do some adjustments, and now look for a distributor/partner.If you do not want a distributor/partner, sell it yourself. Make a site, Ebay, Aliexpress, Youtube movies, test reports, go.

author: fubar.gr
author_rank: Unknown
timestamp: June 04, 2015, 11:02:40 am
content: I played around with the demo found here:http://www.html5scope.com/1/But how do I set the trigger voltage level?

author: ataradov
author_rank: Super Contributor
timestamp: June 04, 2015, 03:40:50 pm
content: I had the same problem. I think the trigger is the arrow on the right, but it simply does not work.And the UI is like a being 747 console. It mist be simplified.

author: tggzzz
author_rank: Super Contributor
timestamp: June 04, 2015, 04:51:24 pm
content: Quote from: ataradov on June 04, 2015, 03:40:50 pmAnd get the units right! (KHz, uS)Makes me think, however unjustly, that the designer has more knowledge and interest in web technologies than digitisers.

author: janoc
author_rank: Super Contributor
timestamp: June 04, 2015, 07:59:19 pm
content: I tried to play with the demo too, but this feels to me like an output from a programmer that has never seen or used a real scope.The triggers don't workHow does one set a trigger on the digital signal?Why only dot mode? At least I haven't found the line mode display which is way more commonButton labels - jeeze, this really requires imagination to find that you must press "Knob" to get both A and B channel levelsandthe time base settingsWhy does longer time base turn my screen into a narrow slice instead of showing me more of the signal?What are those T50, T80, etc. buttons for?How do cursors work? I can see them moving around, but nothing is being measuredToo many issues to list, really.If you want to see how a usable (not great, but usable) PC scope interface should look like, download the demo of the Bitscope software. And for logic analyzers have a look at the Saleae software (also a free download with a demo mode).This thing is pretty much useless, IMO, even if the hardware was great.

author: Monkeh
author_rank: Super Contributor
timestamp: June 05, 2015, 03:52:08 pm
content: So you've created your own forum where you ask yourself questions instead of just answering here..

author: ataradov
author_rank: Super Contributor
timestamp: June 05, 2015, 04:01:05 pm
content: Except that there is absolutely no real interest for this thing. And who wants to spend time and expose email address to some forum with 1 post?

author: Monkeh
author_rank: Super Contributor
timestamp: June 05, 2015, 04:02:37 pm
content: Quote from: c9981 on June 05, 2015, 03:58:55 pmI'm sorry? What does whether or not I have a website have to do with anything?

author: ataradov
author_rank: Super Contributor
timestamp: June 05, 2015, 04:15:07 pm
content: Quote from: c9981 on June 05, 2015, 04:10:44 pmActually, yes, there is. You are starting to turn this topic into an ad for your site. And the problem here is that no one is interested in a product in a first place. And by placing your answers there, you are basically cutting off any future conversation. It is very naive to think that anyone will want to join that forum.Ad hominem attacks on people here don't help either.

author: Monkeh
author_rank: Super Contributor
timestamp: June 05, 2015, 04:26:48 pm
content: Quote from: c9981 on June 05, 2015, 04:10:44 pmYou decided to create a forum and post there to answer questions asked here. The only reason I can see to do that is to control the discussion. Which normally means to censor anyone who isn't amazingly positive.

author: ataradov
author_rank: Super Contributor
timestamp: June 05, 2015, 04:37:51 pm
content: Wow. You are now just spamming us? Nice approach. This is a really fun thread. I'm sticking here just to observe how cultural differences can absolutely kill any product. And this one did not have much going for it in a first place.PS: I see you also registered two different users to ask and answer questions. Do you think that people who buy test equipment are dumb?

author: ataradov
author_rank: Super Contributor
timestamp: June 05, 2015, 04:43:54 pm
content: You already showed us that you can't have an open conversion.Monkehis right, you want to control conversation, and that's just not going to happen.

author: miguelvp
author_rank: Super Contributor
timestamp: June 05, 2015, 04:58:45 pm
content: 50 Mhz with 100Msps? There is no way!Also it's very overpriced since people can get this for way less:http://www.digilentinc.com/Products/Detail.cfm?Prod=ANALOG-DISCOVERYVideo review from Dave:

author: janoc
author_rank: Super Contributor
timestamp: June 05, 2015, 08:35:25 pm
content: Quote from: c9981 on June 05, 2015, 03:50:21 pmSooo, I am supposed to go to an obscure forum to actually discover how to use the UI of your device. Nice touch! That will certainly sell like hot cakesI suggest that you google terms like "UI discoverability" and "affordances". And also try to actually use a real scope first - engineers are used to a certain mental workflow when using test instruments. You can certainly label timebase "Knob" and make it look like a Breitling watch, it will work - at least in the technical sense.However, it is not intuitive and it will be difficult and frustrating to use, especially for a control that is used very often. No scope has a combined timebase and input level control because those things areconceptually completely different. And it is certainly not labeled "Knob". That's like calling a control "Button" - that label is supposed to to beinformative, not only a decoration to fill the empty space!Even then you didn't really answer the questions, apart perhaps the meaning of the T buttons.

author: ataradov
author_rank: Super Contributor
timestamp: June 05, 2015, 10:18:20 pm
content: Quote from: c9981 on June 05, 2015, 10:05:55 pmWhy not make a drop down menu? Rotating knobs are easy to use in real life, not so much in virtual equipment.Quote from: c9981 on June 05, 2015, 10:05:55 pmWhat do you mean "app on PC"? Is not it all HTML5 and should be the same on all platforms?

author: ataradov
author_rank: Super Contributor
timestamp: June 05, 2015, 10:31:26 pm
content: Please use proper quoting.So the entire idea of HTML5 falls apart. You now expect us to write iOS software as well?

author: ataradov
author_rank: Super Contributor
timestamp: June 06, 2015, 12:59:06 am
content: Yeah, but is not the whole selling point of this thing is interface customizable through HTML5? And you loose that once you go to a fixed app.

author: Bassman59
author_rank: Super Contributor
timestamp: June 07, 2015, 11:17:48 pm
content: Quote from: c9981 on June 05, 2015, 10:34:05 pmYour app is in the App Store?

author: free_electron
author_rank: Super Contributor
timestamp: June 08, 2015, 12:13:21 am
content: what is wrong with all you people ?is it so hard to understand that this things GUI is a html5 based webpage ? you dont need no stinking apps.open a web browser , point to the modules ip address and done. the box serves the code. it detects what browser is connecting and reformats the gui accordingly. so irrespective if you open the connection from an android ios windows or linux browser : you get served a gui that is appropriate for your device.he exposes an api through the web link so you can write your own post processing stuff by simply opening a websocket.that's all.there's been several times the call for galvanically isolated scopes. well, this is one. it doesnt get more galvanically isolated than through a wifi link.stop bitching about this thing. i think it is a very good first attempt. the technical specs are a bit low but that may get fixed in rev 2.0

author: ataradov
author_rank: Super Contributor
timestamp: June 08, 2015, 03:14:43 am
content: Quote from: free_electron on June 08, 2015, 12:13:21 amAnd that's where you are wrong. Your idea is correct way of doing things, but what is being pitched here does not reformat, hence the need for apps. Or at least that's the way I'm reading OPs replies.Quote from: free_electron on June 08, 2015, 12:13:21 amFor $300 you are better off buying one of the branded scopemeters and power them from the battery. They will have better parameters as well.

author: miguelvp
author_rank: Super Contributor
timestamp: June 08, 2015, 05:32:48 am
content: And that's is why no one is funding it.Flexible funding doesn't bring a good feeling for people to promote a product because they might get nothing in return if the goal is not reached.I get why you retracted your previous promise but that's why no one is backing up your project because they don't want the risk on them as you don't want the risk on you.

author: Rasz
author_rank: Super Contributor
timestamp: June 29, 2015, 06:34:22 am
content: Hilarious thread. Culture clash and language barrier at its bestI really like how c9981 invents fake specs out of his ass (sampling, bandwidth), shitty chinese product style, on the spot and is immediately shocked people complain about itIts perfectly reasonable to LIE IN YOUR FACE in china, so poor c9981 doesnt understand what is happening/subscribed

author: TheAmmoniacal
author_rank: Unknown
timestamp: June 29, 2015, 06:55:57 am
content: Give the guy a break! I know you all have bad prejudices towards China, but there's no excuse for being so blatant about it. For what I can see it's just a hobbyist trying to develop a product, if it's not for you it's just not for you.

author: ataradov
author_rank: Super Contributor
timestamp: June 29, 2015, 06:57:59 am
content: Well, most of the criticism was justified. Use of improper connectors is not a good idea even in one-off device, much less in something you plan to manufacture and sell.

author: Stonent
author_rank: Super Contributor
timestamp: June 29, 2015, 07:33:57 am
content: Quote from: c9981 on June 03, 2015, 01:59:46 pmYour native language, what is, hmm? It seems not to be english. In fact, very confusing, is it. Yeesssssss.

author: janoc
author_rank: Super Contributor
timestamp: June 29, 2015, 03:11:57 pm
content: Quote from: Stonent on June 29, 2015, 07:33:57 amI wonder how good is your Mandarin (or any foreign language) when you are mocking his language skills. I think his English is decent enough to get him understood, perhaps with a bit of effort here and there. This is not a school where you get marked down for mistakes in grammar.A bit of tolerance, please.@c9981 It would be really helpful if you could replybellowthe quoted text andnotin the middle of it - that makes your replies very hard to read.

author: janoc
author_rank: Super Contributor
timestamp: June 30, 2015, 05:30:46 pm
content: I am sure this has been said before, but a "scope" with 100MHz real time sampling is pretty much a toy. If you want to see anything else but a sine wave, you will be glad to get an usable bandwidth above 10MHz. 50MHz with 2 samples per period is not very useful apart from seeing whether or not there is some sort of signal present.The deal with equivalent sampling I wouldn't even dare to mention - sure, you can "cheat" like that, but in this context it just makes a poor product look even worse than it is, because it makes an impression that you are trying to artificially prop up the poor specs in your marketing materials with something that only confuses the unwary and is useless in practice on this type of scope.BTW, that Picoscope you are citing has a 1GHz realtime sampling rate and is a very different category product.

author: ataradov
author_rank: Super Contributor
timestamp: June 30, 2015, 07:37:30 pm
content: I think you are misunderstanding what the term "bandwidth" means. It is a characteristic of your input stage. It is exact same value for ETS and non-ETS system. It is not related to sampling at all.You can sample all you want, but if your signal was filtered out by the input state at 10 MHz, then all you will sample is noise, no matter what the sampling frequency is.So do the -3 dB measurement and tell us at what frequency it happens with just real-time sampling. I get a felling that we won't have to go higher than 50 MHz.

author: miguelvp
author_rank: Super Contributor
timestamp: June 30, 2015, 07:43:16 pm
content: My Rigol DS2072 has a 2Gsps.Diligent's Analog discoveryabout the same price as yours, has similar specs to what you offer, but they only claim 5MHz bandwidth since they have 2 channels.Two channel oscilloscope (1M Ohm, ±25V, differential, 14 bit, 100Msample/sec, 5MHz bandwidth);source:http://www.digilentinc.com/Data/Products/ANALOG-DISCOVERY/Discovery_TRM_RevC_1.pdfCan you show what a capture looks like when you put a 50MHz sample with say 5 Vpp? What is the dB drop?Edit: Nevermind, I see from your indiegogo the following:QuoteThat's probably using a single channel, right?