SainSmart Micsig Oscilloscope TO2002, Portable Tablet Storage Oscilloscope with 2 Channels 200Mhz Bandwidth 1GSa/s Sampling Rate, 10' Touch Screen

I was excited to use this but the fan cycles continuously from the moment it gets powered up to when it gets powered down, like every 8 seconds. I messaged the seller, Sain Smart about the fan and they assured me that it was normal. I just was in conversation with someone that has the exact same model and he told me his was on 10 minutes and the fan never turned on.Very disappointed with the product and service, I think I was fed a line of BS.UPDATE: I was followed up by SainSmart on this issue and they wanted to make things right by offering a refund or a new replacement. I really wanted to make things work so I opted for the replacement and I am sure glad I did!! The replacement unit came in and it functions flawlessly. I am running it through it's paces and I am NOT disappointed. The fan does run, as it should but it is not a loud constant cycle, it is very quiet as you would expect. I am happy and appreciative for SainSmart reaching out to help me, I will not hesitate doing future business with them in the future! 5 Stars!!!

Apparently these Micsig scopes don't come with the UPI interface. Even though it's written in the description. It's a lie! UPI has been discontinued on all Micsig scopes.

Wow, test equipment sure has come a long way in the last two decades. When I was working on my electrical engineering degree, our entry level lab oscilloscopes cost literally twice what this one does, and that only bought you two channels, 0.0025 Mpts memory depth and 60Mhz of bandwidth. This scope gives you four channels, 110Mpts depth and 100Mhz of bandwidth, with a screen about 4x larger and easier to interact with.The crazy part here is that you don't just get an oscilloscope - you also get a full logic analyzer. I think this is a major benefit that's undersold in the product listing: this thing can monitor serial, CAN, LIN, I2C, and SPI buses and can log the decoded datat to a file, which is an incredible benefit that used to be an entirely separate piece of test equipment that cost thousands. I've been using a little external puck from Saelae for logic analysis, and that's a nice product too, but having it together with my oscilloscope in a single device is a game changer for figuring out why an I2C bus isn't responding correctly.The interface here is quite nice, actually. Unlike some previous Micsig scopes, all of the buttons are in the software and available onscreen. The tablet runs Android 11, so a bit dated at the OS layer, but that's OK for a dedicated piece of equipment - the goal here isn't to watch Netflix on your oscilloscope, although I suppose you could in a pinch. The one thing I had trouble figuring out was how to access the configuration settings for each channel; the interface works via swipe gestures, and once I figured that out it flowed really fluidly and made total sense. This is a serious grade above some of the cheap toy oscilloscopes I've played with, and the interface is fairly intuitive with all of the features you'd expect from professional test equipment.One valuable inclusion that can't be understated is the product manual. There's a PDF manual included onboard on the oscilloscope that's like 350 pages long, and it's detailed and actually helpful in clear English. That's unexpected for pretty much anything these days, let alone imported test equipment, and I really appreciated having it.One concern you may have for a product like this is whether Micsig will continue to support it. I can report that a substantial software update was released since I first received this device, and that's a great sign that they intend to stick with it for the long haul. Neat!The hardware itself is pretty substantial and feels like professional equipment. There's a carrying handle, and the whole thing is ruggedized, with recessed ports and a rubberized power button. The screen has good viewing angles and is clear enough - a 1080p display would have been nice, but this is replacing an old oscilloscope with a dual-scan display that you could barely see, so I'm perfectly happy with the 1280x800 resolution here. Nice probes are also included, but of course they use standard BNC jacks so you're free to upgrade them if needed. I don't see the need, as they seem pretty high quality.This is a ton of oscilloscope for the money. It's a pricey amount to spend for an off brand device where there aren't a lot of reviews, but I've been really happy with it and think it was a huge upgrade for my workbench. I can't imagine ever needing more oscilloscope than this unless I was doing RF or super high frequency work, honestly. It's a great value with a really nice interface that's thoughtfully designed, and I think it deserves more attention as a great middle ground between crazy expensive test equipment and low cost hobbyist kits/portable pocket sized scopes.