Okay circa $100 oscilloscopes?  - Page 1
Forum section: electronics / beginners

author: jarwulf
author_rank: Newbie
timestamp: December 08, 2015, 11:14:13 pm
content: I've been browsing for my first beginner oscilloscopes. For my current purposes I just would like something that could at least measure khz to 1mhZ and 0-12V with two channels. The more the better obviously. I would prefer to keep it around 100 so I've been looking mainly at USB ones. Are the Hantek 6022BE or more expensive Hantek 6022BL with logic analyzer.http://www.ebay.com/itm/Hantek-6022BE-PC-Based-USB-Digital-Storag-Oscilloscope-2Channels-20MHz-48MSa-s-/221270085136?hash=item3384b98e10:g:gmYAAOxy4dNSsWQ2orOWON VDS1022http://www.ebay.com/itm/OWON-VDS1022-USB-25MHz-100MS-s-USB-PC-Digital-Storage-Portable-Oscilloscope-/350961248524?hash=item51b6eba90c:g:w5QAAOxygPtSt-Xoor this barebones sainsmart DSO138?http://www.ebay.com/itm/SainSmart-DSO138-2-4-TFT-Digital-Oscilloscope-Kit-DIY-parts-1Msps-with-probe-/121663892686?hash=item1c53bbacce:g:iQAAAOSwu4BVzEygokay for these purposes? Or are their better options available? What exactly is the difference between a scope with a logic analyzer and one without it?

author: smbaker
author_rank: Regular Contributor
timestamp: December 08, 2015, 11:26:52 pm
content: If it was me and I was in your position, I'd probably save up for the Rigol DS1054Z. I've been getting a ton of use out of mine lately, in a variety of projects. Unfortunately, it's around 4X your budget.If the $100 budget is a hard limit, then have you considered buying a used analog scope? I originally learned on an old 20Mhz BK precision. There's just something about having real physical knobs to turn that you're not going to experience from a USB scope. The disadvantage of an analog scope is that you lose out on any digital measurement and waveform storage capabilities. This week I shelved the Rigol and brought out the old BK precision to do some radio alignments, and it was really a nostalgic joy using the analog scope again.

author: jarwulf
author_rank: Newbie
timestamp: December 09, 2015, 12:29:37 am
content: Quote from: smbaker on December 08, 2015, 11:26:52 pmwhat sort of analog scope would you recommend?

author: tautech
author_rank: Super Contributor
timestamp: December 09, 2015, 12:40:41 am
content: Any CRO that is cheap with Service manuals that are freely available for it.This presumes you have the skills to repair it if necessary although plenty here can assist if you get stuck.

author: jarwulf
author_rank: Newbie
timestamp: December 09, 2015, 01:06:33 am
content: Quote from: blueskull on December 09, 2015, 12:52:30 amis the version I linked to the isolated version you are referring to? Or is it the one called theVDS1022L?http://www.ebay.com/itm/OWON-VDS1022L-USB-Isolation-PC-Digital-Storage-Portable-Oscilloscope-25MHz-/121240715851?hash=item1c3a82824b:g:kAEAAOxy63FSt-BWA logic analyzer isn't necessary for basic purposes right?

author: vk6zgo
author_rank: Super Contributor
timestamp: December 09, 2015, 04:18:35 am
content: Quote from: blueskull on December 09, 2015, 12:52:30 amYou've lost me on this one.Surely waveforms/second is to do with display speed,not triggering?They are directly related with an analog Oscilloscope,but not so directly with a DSO.A CRO has no memory,so it has no alternative but to display the signal it sees.If I set my 7B53A timebase to 100ns /div,& display a 1MHz signal,it appears on the screen as one cycle filling the whole ten time/div graticule steps,at the same rate as the input signal.In other words 1000000 wfm/sec.OK,there is a bit of lost time,due to retrace,but itisthat,"near as dammit!"If I switch my vert amp to "alternate",the wfm/sec halves---the signal is lost during the alternate time.Triggering is something quite different from time/div ----the 7613 with 7B53A will trigger on the (very much reduced in amplitude) signal from my 144MHz Ham transceiver.Obviously,it can't show one cycle,but it (just) triggers---flukey occurrence with one particular unit,probably.I'm quite sure Tektronix never guaranteed it would do that!

author: vk6zgo
author_rank: Super Contributor
timestamp: December 09, 2015, 05:05:26 am
content: Quote from: blueskull on December 09, 2015, 04:23:53 amIndeed,but that wasn't how your statement read.

author: jarwulf
author_rank: Newbie
timestamp: December 09, 2015, 06:19:08 am
content: Quote from: blueskull on December 09, 2015, 01:21:39 amThe link claims that the 1022L has isolated USB.

author: Simon
author_rank: Unknown
timestamp: December 09, 2015, 06:44:25 am
content: Don't get OWON

author: smbaker
author_rank: Regular Contributor
timestamp: December 09, 2015, 07:36:56 am
content: Quote from: jarwulf on December 09, 2015, 12:29:37 amThe only one I'm familiar with is my BK Precision, which is a 2120B, and has served me well. There's nothing fancy about it -- it's a basic 30Mhz dual channel scope.If I were looking to buy a used scope, I'd look for a brand that's well known and has a service manual (I'm sure people here can advise), and a listing that indicated the seller had some idea what he was selling and had performed some rudimentary tests on it. Beware of "It powers up but I don't know how to test it". While analog scopes are repairable, if you're just learning then you probably want to start with one that works rather than one that's broken.

author: EEVblog
author_rank: Unknown
timestamp: December 09, 2015, 08:15:56 am
content: Quote from: blueskull on December 09, 2015, 04:23:53 amLeave a digital scope running long enough with infinite persistence turned on, and it becomes an incredibly powerful intermittent fault finding tool that is unmatched by anything else.

author: EEVblog
author_rank: Unknown
timestamp: December 09, 2015, 08:20:10 am
content: http://www.ebay.com/itm/METRIX-0X-8050-100MS-s-60MHZ-DIGITAL-ANALOG-2-CHANNEL-OSCILLOSCOPE-N140828YEH-/221959328250

author: mtdoc
author_rank: Super Contributor
timestamp: December 09, 2015, 09:03:05 am
content: Quote from: EEVblog on December 09, 2015, 08:20:10 am$50 but shipping is $159!

author: Gyro
author_rank: Super Contributor
timestamp: December 09, 2015, 10:00:24 am
content: Here's the VDS1022I teardown thread, it covers the VDS1022 and 'I' variants. A number of China sellers seem to be using 'I' and 'L' interchangeably for USB isolation, you need to look at the item description. As far as I'm aware Owon haven't done a LAN isolation version of the 1022, though it is a silk screen option on the rear panel and is offered on some of the higher spec scopes like the VDS3102.https://www.eevblog.com/forum/testgear/owon-vds1022i-quick-teardown-%28versus-the-hantek-6022be%29/I'm making no specific recommendations, other than that it's a hell of a lot better than the Hantek 6022. I'm a fan of analogue scopes if cash-strapped too. It depends whether you're more into analogue / audio etc or whether you have a need (edit:for) single shot storage for digital stuff... compromises, compromisesTake a look at this current thread too:https://www.eevblog.com/forum/beginners/sh-cro-vs-dso-%28again%29/Just on a side note:@Simon:QuoteYou seem to throw this quote in to these threads with monotonous regularity and predictably these days. No qualification, no explanation! While you may have some unspecified 'beef' with Owon desktops, Owon do actually seem to have produced a pretty good (best of the bunch anyway) low cost USB scope that offers isolation, intelligently designed hardware (not 'yet another ez-USB streamer') and decent more or less bug-free software. I don't want to pick a fight but such a blanket unhelpful comment when people are trying to learn is hardly befitting of a Moderator.(Edit: typo)

author: JacquesBBB
author_rank: Frequent Contributor
timestamp: December 09, 2015, 10:40:12 am
content: +1. Totally agree on the comment which I could not have phrased better.Additionally, I would say that it makes sense to buy a 100$ USB isolated oscilloscope board, as even if later on you upgrade to a full size scope, you will still have use of the USB board due to.- silence- portability- isolation

author: Simon
author_rank: Unknown
timestamp: December 09, 2015, 12:37:02 pm
content: Quote from: blueskull on December 09, 2015, 04:23:53 am* Terms and conditions apply: the power supply board on your OWON scope may fail prematurely at any time making the likely hood of using it for anything prettly low**** unless you use the battery or your own power brick hacked onto the battery terminals.

author: EEVblog
author_rank: Unknown
timestamp: December 09, 2015, 12:38:32 pm
content: Quote from: mtdoc on December 09, 2015, 09:03:05 amDoh, I thought it was a US seller.

author: Gyro
author_rank: Super Contributor
timestamp: December 09, 2015, 12:46:41 pm
content: QuoteOk, comments about Owon desktop scopes then, not relevant to the OP's price range and the USB ones have neither of these. For what it's worth the VDS1022 has (edit: intensity graded) variable persistence (up to infinite).Thanks for providing a slightly less blanket comment.

author: Simon
author_rank: Unknown
timestamp: December 09, 2015, 12:50:30 pm
content: Quote from: Gyro on December 09, 2015, 12:46:41 pmI'd be pretty pissed of if i was a beginner and bought the cheapest scope I could afford only to have it blow after just hours of use (that could soread over years of ownership) the 60MHz version is affordable and may be tempting but I'd not touch any of the range again with a flipping barge pole.

author: Gyro
author_rank: Super Contributor
timestamp: December 09, 2015, 12:54:27 pm
content: Huh? I just said that the USB ones don't have a PSU board (presumably the original comment applied to the mains supply board) It is USB powered.P.S. Thank you for reverting to a COMPLETELY blanket statement!

author: Cliff Matthews
author_rank: Unknown
timestamp: December 09, 2015, 12:56:46 pm
content: I bought 2 HP 1740A's for $100 recently (pristine inside). Dave replaced a 1A rectifier in an great 2-part video last month, but both of mine have the Rev B power board with the 4A bridge upgrade. I'm taking it slow, so the first thing I did was download the service and op PDF's and remove the center power PCB to check all the voltages. Even if you don't buy one, the video is worth every minute spent watching it.

author: jarwulf
author_rank: Newbie
timestamp: December 09, 2015, 06:54:12 pm
content: Quote from: blueskull on December 09, 2015, 06:22:42 amThe ebay link I provided the seller says the 1022L has USB isolation. Would there be any significant difference between the I and L models then?

author: Gyro
author_rank: Super Contributor
timestamp: December 09, 2015, 07:33:11 pm
content: I almost missed LogicalDave's post in the teardown thread from yesterday. He's successfully retro-fitted the USB isolation parts to a vanilla VDS1022 (the AD USB isolator and TI isolated DC-DC). I haven't looked into the component cost vs current selling prices, but nice to have confirmation that there are no gotchas.There's the 3yr warranty to consider too of course but I guess it depends on the potential saving. Nice to have the option at a future date anyway.

author: Gyro
author_rank: Super Contributor
timestamp: December 09, 2015, 08:17:49 pm
content: Curious, I've not seen that issue, everything just worked in English, with S/W updates downloaded from their website too. Just lucky?P.S. Not sure the OP is actually anywhere near decided yet, he would be wise to carefully consider S/H Analogue and other options against his needs first.

author: Gyro
author_rank: Super Contributor
timestamp: December 09, 2015, 08:38:53 pm
content: I bought mine from a China registered ebay seller who advised that he had stock in the UK. I registered its serial number on the Owon site (including approx UK location) without any difficulty (and have received s/w support with reporting a s/w bug too). It never occurred to me that there might be a 'China-locked' version - in fact in the teardown I didn't find anywhere that the serial number might be stored internally, I'm pretty sure the FPGA code is downloaded on startup.Edit: Maybe we should take this across to the teardown thread if you want to investigate further to avoid polluting the OPs thread.

author: Gyro
author_rank: Super Contributor
timestamp: December 09, 2015, 08:52:38 pm
content: Ah, ok. That makes sense then.

author: trberger
author_rank: Newbie
timestamp: December 09, 2015, 09:35:07 pm
content: Back to the original question: Watch on eBay for a Tek 465 or 475. hp also madecompetitive scopes that appear cheaply too.I have a Rigol DS1052E, Tek 475, and 485. The 475 and 1052 are used regularly.Probing is difficult (what you see is only there because the probe, wires, and groundingmess up the circuit). I find the Tek scopes easier to use that way.

author: cobbler
author_rank: Unknown
timestamp: December 10, 2015, 12:43:35 am
content: http://www.ebay.com/itm/Tektronix-2232-100MHz-2ch-Digital-Storage-Oscilloscope-/351596855626?hash=item51dcce414a:g:jJUAAOSwv-NWYipYThis Tek 2232 was one of the first analog scopes to havedigital storage. It has cursors, storage, save, etc. This is what I have now and love it. Great for learning. $50 with $50 shipping. Plus it has the epic Tek Skateboarding Wizard easter egg...

author: jwm_
author_rank: Frequent Contributor
timestamp: December 10, 2015, 02:25:02 am
content: If you can arrange pick up from southern california (Santa Monica) I have a tek 2205 that I am willing to part with cheaply for someone that would use it. It is a fine analog 20MHz scope. I finally found a 2465 to take up the analog scope slot on my bench, once it comes I will be looking for a new home for my 2205.Here is a recent picture of it showing what would be a great triangle wave generator... were it not the output of a power supply circuit I am working on... doh.

author: Cliff Matthews
author_rank: Unknown
timestamp: December 10, 2015, 02:38:30 am
content: Quote from: jwm_ on December 10, 2015, 02:25:02 amNice bright trace! I'd need those goggles too

author: jarwulf
author_rank: Newbie
timestamp: December 10, 2015, 07:25:14 pm
content: As of right now I just need the scope to look at waves from 0-20V around the 1 khz to 10mHz range. I might have other uses later but thats just the immediate goal.Since people seem to think the USB scopes are not as good. Here are a few table scopes I found on ebay...I was wondering what you guys would recommendThese are very cheap analog scopes I thinkhttp://www.ebay.com/itm/SONY-TEKTRONIX-380-NTSC-TEST-MONITOR-OSCILLOSCOPE-FREE-SHIP-/201482115396?hash=item2ee9451944:g:zH8AAOSwNSxVcRS6http://www.ebay.com/itm/Hitachi-Oscilloscope-V-650F-60Mhz-/131653334519?hash=item1ea72675f7:g:f-oAAOSwEeFVNRHuHere are scopes that claim to be digitalhttp://www.ebay.com/itm/EZ-DIGITAL-OSCILLOSCOPE-OS-5020G-20MHz-OS5020G-/291635276507?hash=item43e6d12adb:g:E~4AAOSw7FRWaEmkhttp://www.ebay.com/itm/Kikusui-100MHz-2-Channel-Digital-Oscilloscope-5501U-/262144176212?hash=item3d0902b054:g:osgAAOSwQTVV7vuuhttp://www.ebay.com/itm/Keysight-Agilent-54600B-100-MHz-2-Channel-Oscilloscope-/301802695998?hash=item4644d7ad3e:g:fbsAAOSweuxWTOdlHere is a tektronix that is at the edge of what I am comfortable spending but I heard that people really like that brand. So if the previous scopes aren't good enough...http://www.ebay.com/itm/Tektronix-2234-Digital-Oscilliscope-100MHz-/151745757439?hash=item2354c080ff:g:Y1kAAOSwPcVVkbrTI need to be able a scope that can measure my frequency range and voltage but its not clear from many of the listings about whether they can measure khz. They just say 100mHz bandwidth and thats it...

author: alsetalokin4017
author_rank: Super Contributor
timestamp: December 11, 2015, 12:53:12 am
content: Of the scopes you have listed, the HP 54600B is definitely the one I'd choose. It appears to be functional and it looks to be in great shape cosmetically. The Free Shipping is a major plus. You will need probes of course but you can get probes that will serve your purpose for not very much. Probably come in at a bit over 200 dollars US total for scope and probes.The Tektronix doesn't look so good in the single photo, it looks like there is some damage or gunk on the panel, never a good sign.The others are probably not going to make you happy.Yes, the HP will have a frequency readout and other cursor functions. But you should be able to calculate the frequency of a regular signal using the scope's timebase and graticule on any working oscilloscope, to within a few percent accuracy.http://www.tevetllc.com/documents/pdf/hp54600.pdf

author: jarwulf
author_rank: Newbie
timestamp: December 11, 2015, 01:35:27 am
content: Quote from: alsetalokin4017 on December 11, 2015, 12:53:12 amWill the probes be that expensive? I think I found one for 13 dollarsQuote from: alsetalokin4017 on December 11, 2015, 12:53:12 amIs the frequency readout from the scope not accurate?Quote from: alsetalokin4017 on December 11, 2015, 12:53:12 amSo would you say its a decent scope or just decent compared to the others listed? It says the bandwidth is 100MHz - 349MHz on the page but the bandwidth of 10hz-100mhZ from the datasheet is correct right?I just searched for some probes and I got thesehttp://www.ebay.com/itm/2x-100MHz-Oscilloscope-Scope-analyzer-Clip-Probe-test-leads-kit-for-HP-Tektronix-/151894560636?hash=item235d9f0f7c:g:QJ8AAOSw6BtVVBvywould this be enough to be good to go? or would I need additional stuff? Thanks. Strongly considering this one if the price is alright.

author: alsetalokin4017
author_rank: Super Contributor
timestamp: December 11, 2015, 03:38:19 am
content: Quote from: jarwulf on December 11, 2015, 01:35:27 amThe frequency readout from the scope will probably be more accurate than you can get by manual calculation, but if you want real accuracy you need a hardware frequency counter. Some digital scopes have them built in (like the Rigol DS1054Z), or there are stand-alone units you can get. Precision isn't cheap though.Regardless, you should still know how to calculate the frequency from the scope's timebase settings and the screen graticule, so that you can confirm the "numbers in boxes" that a DSO spits out at you.QuoteThe pdf I posted is an overview of the HP54600 type which includes several models with different options and bandwidths. The scope in the EBay link is the basic 2-channel, 100 MHz bandwidth 54600 model.It certainly is decent compared to the other scopes you listed. If the Tektronix was perfect, it would be my second choice, but I am suspicious of that listing because of the photo.For 150 dollars and free shipping, I'd have to say the HP is "decent". Assuming of course that it actually does work 100 percent. You should contact the seller to get more information. I see that they have many units available, so they are probably from an educational or manufacturing source that is upgrading or liquidating.QuoteI have a set of those cheap probes myself, and they are "adequate" for low frequency work. Since you are interested in working at 10 MHz and below they should be fine for your purposes. Just make sure you aren't exceeding the voltage limitations!Why are quality probes so expensive? Because... quality and reliability cost money. And also bandwidth: high bandwidth probes require more care and special materials and construction to deliver the performance needed at high frequencies.Would you need additional stuff? This depends on what you are actually doing. You may need a BNC patch cord if you are going to be working with a Function Generator. I don't know if the HP54600 has switchable 50ohm/1megohm input impedance; if it does not, you may need a 50-ohm thru terminator, or a terminator+BNC Tee combo, to accurately scope your FG's 50-ohm output. But as I say, this depends on the work you intend to do with the scope.A 100x probe may also come in handy, especially if you are doing audio tube amplifier work or other work involving voltages over a couple hundred volts.

author: mtdoc
author_rank: Super Contributor
timestamp: December 11, 2015, 03:56:24 am
content: Actually those probes will be just fine up to 100 MHz and maybe beyond. These cheap eBay P6100 probes have been discussed here before. SeeHERE.

author: JacquesBBB
author_rank: Frequent Contributor
timestamp: December 11, 2015, 06:02:37 am
content: I had two HP54601A which are the 4 ch version of the HP54600.I gave one and still have the other.Its a quite pleasant to use scope, which has the advantage to be much lighter than a tek 465 ( I have also a Tek 468).It has only 1M termination, no 50R.If you get this one, be prepared to do some repair at some time. These are common, but relatively easy to fix :- When the NVRAM battery dies, the scope does not boot any longer. I had to fix that on one.(I got it for free in a dumpster, this was probably why).https://www.eevblog.com/forum/repair/hp-54601a-failed-checksum-test/msg547049/#msg547049- Two caps in the display board are not sufficient and may fail resulting in some display problem( I had to fix that on both unit. On one immediately, on the other one after one year of use).https://www.eevblog.com/forum/repair/help-needed-on-hp-54601a-oscilloscope-display-problem/msg624054/#msg624054I find that 149$ is a little overprice for this 2ch scope, even with free shipping.You should be able to get the 4ch for this price.The problem is that as they havemany units, the picture is probably not the picture of the unit you will get.I would propose 100$ but ask before for a picture of the one they will send to you, with aworking display. If the vertical display is shrunk, the cap is out.

author: vk6zgo
author_rank: Super Contributor
timestamp: December 11, 2015, 06:04:12 am
content: Quote from: jarwulf on December 10, 2015, 07:25:14 pmThis is not an Oscilloscope at all--it is TV waveform Monitor to look at video signals.It is a specialist device,without a normal Oscilloscope variable timebase,variable gain inputs,or any of the things normally found in a 'scope.QuoteThis IS an analog Oscilloscope,& areasonable one ---I don't like the "blob" of light on the screen,it may have problems.QuoteThis is not a Digital 'scope,it is an analog instrument made by company called "EZ-DIGITAL".This sort of thing is not unusual,& not really a scam.My little 10MHz single channel analog Oscilloscope is a "Digitech" brand!QuoteThis is a Digital 'scopeSpecs?----- apart from "100MHz",your guess is as good as mine.QuoteThe last two are from companies with stellar reputations,but they are both quite old.Back in the '90s I was quite enthusiastic about Digital 'scopes (DSOs),until I saw demonstrations of some early instruments.To say they were lacking would be kind.Modern DSOs are very good,the two above are somewhere in between those really early ones & the capable modern ones.

author: JacquesBBB
author_rank: Frequent Contributor
timestamp: December 11, 2015, 06:15:31 am
content: I see this adhttp://www.ebay.com/itm/HP-AGILENT-54601A-100MHZ-4CH-STORAGE-OSCILLOSCOPE-/191744951707?hash=item2ca4e3c59b:g:uwUAAOSwt6ZWU36G#shpCntIdbut here the display cap is already bad. The display does not occupied vertically all the space.It will soon get worse. But as I said, this is an easy fix.

author: Zero999
author_rank: Super Contributor
timestamp: December 11, 2015, 09:09:31 am
content: Quote from: Simon on December 09, 2015, 12:50:30 pmOn the other hand, I have a similar model to you which is nearly as old and still going strong.If it goes wrong after a few hours of use then send it back. It's also a fraction of the price of the 'scope you bought so it's less of a risk. Hopefully by the time it packs up he will have saved the money to buy a proper 'scope.

author: KL27x
author_rank: Super Contributor
timestamp: December 11, 2015, 07:24:48 pm
content: QuoteI didn't even know this was a big deal until I watched Dave's oscilloscope reviews. And now he's here showing that even the cheapest digital scope will show a fault on persistence.I have been using my old OWON 25MHz scope, just lately. After using a Hantek for a couple years, it's curious watching a new signal slowly display on the OWON. Sometimes you can see it sorta sketches itself in in stages, like it's starting at 20x10 resolution and then working its way up, over a second. But once it's up, it responds to voltage changes just fine in real time, for debugging. The biggest gripe with my OWON is the menu navigation is clunky and the menu can't be closed, so it takes up an unnecessarily big chunk of the screen. It works and it's still useful to me. It has infinite persistence, if you need to find a fault. I suppose the slow waveform update could be quite annoying if you're used to an analog scope and it could be bad for specific situations.I am not crazy about the menu buttons on the bottom of the screen on the higher end OWON. Seems like it limits how/where you can put your scope on a cluttered bench.

author: Gyro
author_rank: Super Contributor
timestamp: December 11, 2015, 07:42:51 pm
content: QuoteSounds like it's time toupgradeto the USB version.

author: KL27x
author_rank: Super Contributor
timestamp: December 11, 2015, 07:55:08 pm
content: To be more accurate, it's not so much the contrast is terrible. The contrast looked pretty decent until I got my Hantek. But the contrast control is TWITCHY on this particular model or unit. When it's perfect, it fine. But if I knock on my bench hard enough, I can see it flicker, lol. I don't think it's a brand thing as much as this particular entry level model is fairly cheaply built.I often use a scope for debugging my microcontroller code. Never used a USB scope, but for the simple reason or having to switch back and forth between windows to see things, I think I would prefer a standalone. Recently have been experimenting with the placement, which is why I have the old Owon out. I have it setup right underneath my computer monitor, and right next to my dev programmer, working out some bugs. I like the setup so much, I might put my Hantek there, permanently.Curiously, my scope happens to be on, right now, and it looks exactly the same as the pic you just posted, lol. Good old Owon red and yellow.

author: jarwulf
author_rank: Newbie
timestamp: December 11, 2015, 10:16:32 pm
content: While trying to decide between an inexpensive old tabletop and usb I came across a $75 Owon VDS1022I and decided it was cheap enough to take a chance with. Will update you perhaps if it decides to blow up.

author: Gyro
author_rank: Super Contributor
timestamp: December 11, 2015, 11:04:29 pm
content: QuoteThink you're pretty safe, Simon was going on about a desktop model () nothing to do with the USB one. Be sure to report back.