HANMATEK DOS1102 Digital oscilloscope with 2 Channels and Screen 7 inch / 18 cm, TFT-LCD Display, Portable Professional Oscilloscope Kit with 110mhz Bandwidth 1GS/s Sampling Rate

I always want a scope for field use, something that I can pack in a suitcase and has an input bandwidth that I can see most of the signals on my boards. This scope is very small (and light!) yet it has an input bandwidth of 110 MHz, a large screen, with all the basic functions that a digital scope should have, and it's so economical I almost thought that I bought a DMM. It's good for field use, and it's so easy to move from test to test in a lab setting. The bandwidth covers most of my needs. I even use it on signals that have a rise time below 20 ns. Yes, I know I fold in the rise time a little bit that from the scope, but just checking if I have a signal a not, that's good enough. If I really need to have a precision measurement, I roll out my heavy scope with 500 MHz to 1 GHz bandwidth (but I also paid a hell lot more for those scopes and I do not really want to use them unless I have to). Another great use of this scope is in undergraduate research or senior design projects. Breaking things is a natural process of learning and believe me, students are very good at that (the breaking part, not always the learning part that should follow). I work with several students a year on such projects, I now have a scope for them, and I will ask them to try out all the functions, including the remote connection and DAQ part, that I find very useful but have no time to use myself.

Great as an entry level scope. Even with one channel, the bandwidth is more that enough for most home projects.

This appears to be an amazing instrument and has features we never dreamed possible when I was learning electronics in the 1960s. It would have been perfect for my hobby use. However a couple months ago, I got pulled out of retirement and my requirements became professional again. I bought this product but I discovered it uses an 8 bit A/D converter which means there are only 256 vertical data points on the screen. This is alright for a beginner or a hobbyist as the price is the most important thing. I recommend it for those applications. But for the R&D I am getting paid to do, I need 12bit or better A/D to get the necessary resolution. I had not even thought of this until I saw the display. I had to return it and bought another instrument for twice the price with no additional features other than a better A/D converter. Pity. It is really great otherwise. For learners where price is all important. All that work to engineer a great product and to blow it in economizing on one chip inside, relegating it to the hobby market. Likely done on purpose because otherwise there would be no incentive for pros to buy a more expensive instrument. But hobbyists and students, go for it as it will be a wonderful learning tool for not a lot on money. The cheapest full feature scope possible.

Use low-end Tektronix at work, bought this for home. Have to say that the Hanmatek DOS1102 has several aspects, mainly on ease of use, that are superior to Tektronix in the same speed class. 1. AC/DC coupling is a top-level menu item. (Tek requires six button clicks and a knob turn to make this simple change. What was Tek thinking?) 2. "Analog" adjustments like position knobs and trigger level have a better default resolution and speed, and thus do not require the tiresome coarse/fine menu that the Tek does. 3. Very convenient "show all measurements" quick screen for when you don't want to waste time setting up several different individual measure parameters. 4. Reasonably quick boot without any pushback or questions when powering on. 5. Seems better than Tek about not putting junk in front of the waveform you're trying to see, but maybe that's because item 3 above means you'll have less need to post measurements on the screen. Now the downsides: 1. Most sensitive scale is 20mV/div with X1 probe, about 2mV rms noise on this scale. 2. As some other commenters mentioned, there's about 1-2 pixels noise on the trace regardless of scale that gives it a crawly kind of look. 3. Single shot capture works great but is less convenient than other scopes; the first shot is easy but to do another you have to scroll back through all the trigger mode options to get back to Single. The Run/Stop resets the scope to Auto mode. Oddities, not necessarily downside: 1. XY mode splits the screen into a small XY display, a small YT display, and a text box. I'd have preferred full screen XY but seeing both at once also has some advantages. Subjective stuff: On the good side, handles more like a traditional scope compared to some others, controls respond quickly, and stuff that would be front panel on an analog scope tends to be on the top menu instead of hidden. On the downside, the knobs are soft both in texture and in the detents. I'd have liked harder plastic and a more robust detent. Overall: Impressive value for a $170 scope if you're not doing small signal work.

Per the advertised specs this thing is amazing for the price. I'm just a car mechanic so I maybe can't judge it as thoroughly as an electrical engineer, but for my use case it's awesome. The few other auto techs I've worked with that consistently use an oscilloscope for diagnostics use very expensive tablet style scan tools and very expensive obd2 dongles and instead of this little stand alone bad boy that costs less than the dongle you need to do O-scope stuff with an autel or snap on scan tool. As far as function, the wall wart to laptop-style barrel connector power supply is less than ideal, but it has never failed for me. I love the knob controls for the time window and voltage range settings vs tablet based touchscreen inputs. I pretty much only use it to monitor 5V /12V hall effect speed sensor waveform inputs for engine, transmission, and abs sensor signals and maybe a coil or injector control circuit for the one time in a hundred it's not obviously just a bad coil, injector, or circuit. Not really a must have tool for some car mechanics but for an decent diagnostic tech it's almost a necessity these days and this is a very good way to get a stand alone O-scope in your tool box in a package that also happens to be a very cheap, good looking, and effective.