Another Mini Portable Cheap DSO $40 100MSa/s, $80 200MSa/s - Page 1
Forum section: electronics / testgear

author: Mechatrommer
author_rank: Super Contributor
timestamp: September 09, 2018, 06:03:42 pm
content: while looking for handheld/portable scope... i cant find they are mentioned here, so i just throw it here in case someone looking, if already mentioned, then this is double post. from the last year search, still the recommended unit are the 1 - 5MSa/s Arm DSO variant, there is another 10MSa/s, but below is claimed to be 100MSa/s. if we go Nyquist boundary, this is 40MHz scope. 600V input etc etc, you can read...DSO NANO3New Mini Size Portable Digital Oscilloscope 1.8 inch LCD Display 20MHz 100MS/s$44 athttps://www.ebay.com.my/itm/New-Mini-Size-Portable-Digital-Oscilloscope-1-8-inch-LCD-Display-20MHz-100MS-s/253585913047?hash=item3b0ae5f4d7:g:7bMAAOSwfXFbM1YLsimilar look and spec, 800V inputDSO168 Handheld mini pocket digital oscilloscope 20M bandwidth 100M sampling$42 athttps://www.ebay.com.my/itm/DSO168-Handheld-mini-pocket-digital-oscilloscope-20M-bandwidth-100M-sampling/123119301045?hash=item1caa7b71b5:g:8JIAAOSwIIha76hMreview, only a few, not really comprehensive...youtube=N_7O2fKFwEQyoutube=C0itfcpflpUyoutube=ubxJCffi9yQnow this is another... 200MSa/s @ $78.. 800V input2KSamples memory128KBytes ... can be "stocked" whatever that means (i guess "stored")DSO338 NANO PRO 30MHz 200MSa/s Mini Portable IPS LCD Digital Oscilloscopehttps://www.ebay.com.my/itm/O120-DSO338-NANO-PRO-30MHz-200MSa-s-Mini-Portable-IPS-LCD-Digital-Oscilloscope/302852716371?hash=item46836db753:g:Y80AAOSw2qdbe6TRedit: wait, i think it has function generater, that 2000 waves he's talking about that can be stocked...no review in youtube that i can find yet...fwiw...

author: Fungus
author_rank: Super Contributor
timestamp: September 09, 2018, 07:57:17 pm
content: One channel, 20MHz bandwidth, doesn't seem totally unreasonable.I bet the firmware is horrible though.

author: ogden
author_rank: Super Contributor
timestamp: September 09, 2018, 09:48:39 pm
content: Quote from: Fungus on September 09, 2018, 07:57:17 pmLOL, it is. For instance they show identical RMS value 1.77V for various (sine/triangle/square) 5VPP waveformsSeems like they just do "KISS approach", RMS = VPP/(2*sqrt(2)) for any waveformPicture fromeBay sales link

author: rsjsouza
author_rank: Super Contributor
timestamp: September 09, 2018, 10:08:36 pm
content: Some of the previous instances of these DSOs were only useful to see some lines on a screen; their interface was truly terrible, but they were based on microcontrollers and were quite slow. At 20MHz, I wonder if they copied part of Labnation's oscilloscope.https://www.lab-nation.com

author: Mechatrommer
author_rank: Super Contributor
timestamp: September 10, 2018, 08:19:39 am
content: Quote from: rsjsouza on September 09, 2018, 10:08:36 pmsome funny thing on the spec, "MHz/s" sampling rate and i've never seen an FPGA that is not "100% silent"https://www.lab-nation.com/#specificationsand at $229? its not a wonder of the world. just add another $100 and we get 1GSa/s DSOQuote from: Fungus on September 09, 2018, 07:57:17 pmone channel is the real limiting factor, but for new learner who just want to see a signal, $40-80 is another ration saving alternative. looking at the circuit and how they do it 100MSa/s @ $40 will be interesting... maybe i can get one if i have money and time to burn.

author: Fungus
author_rank: Super Contributor
timestamp: September 10, 2018, 08:35:12 am
content: I used a DSO Quad for about a year. It wasveryuseful, compared to not owning any oscilloscope at all, but the user interface is a disaster.The firmware on those got a lot better after some open-source types worked on it a bit but the button presses needed to adjust anything is like a video game. Long press button A, short press button C, three clicks left on E, etc.Quote from: Mechatrommer on September 10, 2018, 08:19:39 amYep. No ability at all to correlate two signals is a deal breaker.

author: ogden
author_rank: Super Contributor
timestamp: September 10, 2018, 08:36:48 am
content: Quote from: Mechatrommer on September 10, 2018, 08:19:39 amIn 40-80$ range there are much better (USB) scopes with bigger screens (rofl) and two channels as well:48MSps 2 channel Hantek 6022BE ~50$ on AliexpressYou can get 100MSps 2 channel Owon-VDS1022 for 80$ on AmazonNew learner does not need pocket scope, he will be fine using his PC as scope screen.

author: Gyro
author_rank: Super Contributor
timestamp: September 10, 2018, 09:06:11 am
content: QuoteIf so, stretch a few more $ and get the VDS1022Ifor the advantage of its galvanic isolation, your PC will thank you one day!

author: rsjsouza
author_rank: Super Contributor
timestamp: September 10, 2018, 10:45:43 am
content: Quote from: Mechatrommer on September 10, 2018, 08:19:39 amExactly. I have really no idea how they are still in business - either their software is really much better than the average or they have educational deals.If you like the form factor of a tablet and touchscreen, the Micsig tBook mini can be had for the same $100 added.

author: Mechatrommer
author_rank: Super Contributor
timestamp: September 10, 2018, 11:30:02 am
content: Quote from: rsjsouza on September 10, 2018, 10:45:43 amthats a $500 unithttps://www.ebay.com.my/itm/Micsig-Tablet-Oscilloscope-100MHz-4CH-1GSa-s-tBook-TO1104-Battery-Serial-Decode/253802984379?hash=item3b17d633bb:g:~NIAAOSwRoZZiMBH

author: tsman
author_rank: Frequent Contributor
timestamp: September 10, 2018, 12:32:49 pm
content: Quote from: Mechatrommer on September 10, 2018, 11:30:02 amYou're comparing the 2 channel LabNation SmartScope with a 4 channel Micsig tBook mini. The 2 channel 100MHz Micsig tBook mini is theTO1102which is $400.

author: rsjsouza
author_rank: Super Contributor
timestamp: September 10, 2018, 01:56:17 pm
content: Quote from: tsman on September 10, 2018, 12:32:49 pmThe TO1072 (70MHz, 2 channels) is $329 atAmazon US.

author: Mechatrommer
author_rank: Super Contributor
timestamp: September 10, 2018, 02:02:03 pm
content: those are near DS1054Z (proper scope) price already... yeah if you can afford that.

author: rsjsouza
author_rank: Super Contributor
timestamp: September 10, 2018, 02:20:48 pm
content: Mecha, a portable unit has its uses and benefits when compared to a bench scope, and both the Micsig and the DS1000Z are quite comparable in its features. It is great to live in a time with so much choice.

author: theoldwizard1
author_rank: Regular Contributor
timestamp: November 07, 2018, 11:06:21 pm
content: Quote from: rsjsouza on September 09, 2018, 10:08:36 pmI was in contact with the owner of this company. I told hime that he was so close to making a major dent in the portable automotive oscilloscope market (dominated by the over priced PicoScope). A few software tweaks would get him half way there. 4 channels and deeper buffers and keeping the price in the same ball park and he would crush PicoScope !This was almost 1 year ago and I have heard no more.