DOS1102

This is an amazing scope for the money. I have had it for a few days and I am very impressed. I like it better than my Tektronix TDS 2014, it has more features and a far better display. My favorite features: excellent trigger menu, up to eight instant measurements per channel, beautiful display and ease of operation. I will probably buy a few more of these!

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.

This was purchased for a professional training class. This oscilloscope works well on the heavy equipment I use it on. We have been using this for 3 months and it still preformed well. Display is easy to read. The operation can ne confusing while learning to use it but after a few adjustments it works well.

My old O'scope is a Hameg 20 MHz dual-trace I bought in (then West) Germany in 1982 for about $2,000. It's heavy, has a tiny CRT and dual-trace, but I've lugged this thing around for 42 years and now it's almost obsolete, but still works, and it can be plugged-in to a variety of power sources!The HANMATEK 110mhz DOS1102 only weighs a few pounds and exceeds my old scope in everything else. After it arrived an hour ago I looked through the handbook trying to acquaint myself with the parts and controls, but the hardest part was figuring out HOW TO TURN IT ON. The technical support guy I contacted gave me an URL and I watched a short promotional video that showed WHERE the power-plug went, which, if you don't know, is almost invisible on the left side. Not what I thought at all with 2 USB plugs (which are only for signals to a computer.)What's missing in the information on the Amazon page and the handbook is the most simple thing you just might want to know, like "How to turn it on!" Amazon needs to have that video, not the other one that shows you almost nothing...Once I found the small plug-in and pushed the on/off button, it popped on instantly with a beautiful color screen showing glorious fine detail. Oh, that's NICE! The Oscilloscope techniques will come around without much effort. I actually went to school at Lowry AFB in Denver to learn how to repair and calibrate these things and other delicate instruments. (At least instruments like a Hameg 20 MHz.) Now I'm not so sure because everything is on IC's and if something goes wrong it might just be cheaper to buy a new one (instead of trying to de-solder a chip from the board and replace it with the same model number chip, IF you can even find it...) The good thing about IC's is they use tiny voltages and currents and have greatly extended life compared to components like tubes, resistors, and capacitors. For now, I have a new, very compact and lightweight scope!

Great o scope works fine all the controls work well and good scren great value for the money

I thought I was doing something wrong so I waited and only used one channel for a long time, and recently bought new probes and tried changing settings to fix my issue, but I had no luck. The problem with this scope is the 4 channels all share a common ground, or negative probe side. When trying to test multiple amplifiers at the same time, the scope will cause the negative/ground side to do a short to the adjacent channels. So you end up putting your amplifiers into protect when trying to match sine waves using audio or test tones. You cannot have one amp hooked up to 1 channel playing a test tone, and another amp hooked to a different channel playing a test tone. You end up shorting the ground/negative sides together and causing your amps to shut down.

This scope is ok, Its the test leads that come with it that I really have a problem with. The alligator clips on the leads are really hard to open and are easily bent out of shape when you are trying to open them. They are far too small to grip easily and slip around in their silicone insulating cover. I would return the whole scope if I were not outside of the return window.