HANMATEK Handheld Digital Oscilloscope 100Mhz Bandwidth with 2 Channels HO102 3.5"TFT Mini Oscilloscope, 2 in 1 Oscilloscope and Multimeter, Backlit Screen, Auto-Calibration Function, Memory Function

It is a neat little instrument. Bought it as a cheaper alternative to a automotive scope, (Hard to haul my Tek scope out to the car) I am used to "old school" scopes with knobs for horizontal time and vertical voltage functions. This one is a bit different, not completely intuitive when it comes to changing parameters. The online manual was not working correctly when I bought this. For the price it does work well, and is just as convenient as my Fluke hand held multi-meter. I still prefer my Tek bench scope, but it is cool. Battery life is good and it's still happy months since I purchased it. It came with decent scope probes too. Good buy.

This review is based on several weeks of use, so no long term conclusions. The good parts. I needed a portable "floating", as in isolated ground, scope for poking around on the mains side of power supplies. HO52 fits the bill. It seems to do the advertised 50MHz and has the multimeter side isolated from scope side, as in, multimeter ground is not connected to scope ground. Probe BNC connectors are shrouded and 1KHZ contacts have rubber cover. So from visible safety perspective it looks good. The interface (buttons) is laid out reasonably well, so it is possible to operate with one hand - I can hold the unit in my left and reach all the buttons with my thumb. Battery life seems to be around 5 hours, but I did not try to run continuously for 5 hours. Multimeter readings seem to be within reason from Brymen BM869, so no complaints. Although multimeter is not my reason for buying O52. Not so great parts. Autoset function works fine down to 20mV-18mV signal. As long as you do not expect benchtop performance out of the portable unit, it is OK. Frequency measurement starts working at around the same signal level - 20mV~18mV. So this could be better. Masurements are very basic, so are the triggers. No channel math. I did not find a way to adjust vertical or horizontal settings smoothly (uncal in Tektronix speak, Vernier in Rigol's) - it is always discrete jumps. So if you are trying to measure rise time, there is a bit guessing game where to place your cursors (for example at 10% and 90% of PK-PK). Conclusion. Would I buy it again for a portable scope with a "floating" ground? Yes, no doubt. Would I buy it as a starter scope if I did not have a benchtop unit already? No, not really. It would be better to save and buy a 1GS/s 100MHz desktop unit with better sensitivity and features. HO52 is not a replacement for benchtop unit.

I gave it an overall score of 4, because of the learning curve. Other than that, it has a 5 star. Accuracy....Well, I turned the generator back onto the scope itself and did some measuring. It jumped all over the correct frequency. I was hoping a little more stability in reading the frequency when it was supposed to be fairly close. I tried a regular house hold frequency, it was Plus or minus 2hz. Jumped all around 60hz. Generator worked, Scope worked, Multi-meter worked. I couldn't manually set the "scale" on the multi-meter. It only seemed automatic. At the same time, maybe I just couldn't find the manual setting in the Multi-meter mode. (Part of that learning curve if manual mode exists). Ease of use, I gave a a low value because of the learning curve. I would finally figure it out in about 1 hour, but the next day i would have to re-figure it out again. It seemed they tried to make it like the fluke 123, but it just isn't as easy to operate as the 123. I believe after the learning curve, it will be a fantastic meter for the money. I think you will have a meter well worth the money you paid. Though I gave it a low Ease of use, do not be discouraged by the value. It is actually quite easy to use, just a little cumbersome to learn how the meter works in the first place. Once you learn the meter, ease of use is nice. I would recommend this meter to other people. I suggest that the people who purchase this meter be familiar with both Oscilloscopes, Multi meters, and Generators. If you have used flukes like I have most of your life, it will be frustrating learning this meter at times. But hang in there, these meter does a fine job. The manual is basically worthless....But no problem for those who have worked with scopes, multi-meters, and generators before.

Have been using Scopes many years....Since this scope does not have controls marked as a standard analog scope ,you have to learn what the function buttons mean in correlation with an analog scope. Some things you cannot control, but in the auto mode they are workable. So far I have had a learning curve in regards to Buttons and what they do when and where. So far this Scope seems OK and is compact and well built. I am enjoying the learning cure as far as buttons and functions. For the price this little GEM Comes with hi quality probes and accessories. It's a Great buy and you get quite a bit of power in the little package. Just wish the controls were the same as an analog scope for ease of operation. But like an old dog ..I can learn new tricks.

I purchased this oscilloscope to tune my car's audio, since I was not satisfied with the job done by the stereo shop. For this purpose, it was great! It picked up the test tones generated by my car's stereo like a champ, and the auto function was useful to scale the display. I was easily able to see the clipping point of my car's stereo. Also easy to measure the clipping point of my car's amplifiers. I have to admit I didn't use the device's voltmeter function so I can't attest to it's accuracy. Thanks to this oscilloscope, I was able to determine that my stereo shop did a horrible job with the installation/tuning, causing my system to clip like crazy at moderate volume levels. I wonder how many people out there have bad installations by their stereo shop and don't even know it?

The body of the Hanmatek oscilloscope feels sturdy with padding making it a good choice for field work. The FNIRSI 2C53T by comparison feels more like a student calculator in the hands, but that unit includes a function generator for the same price. Also, from my research the Hanmatek appears to be built by Owon which makes good scopes.

The device is slightly larger than a multimeter, and noticeably heavier. It has an internal battery which is charged via USB; the charger, cord, probes, and carrying case are all included, no external components are needed to begin using the oscilloscope. Compared to a bench oscilloscope, the start up time is fast - about 1 second. Practically all of the features that one would commonly use on an oscilloscope are available and work as expected: AC and DC coupling (for trigger as well), 1x and 10x probe, XY mode, measurements, cursors, reference waveform, saving waveform or screenshot to file, bandwidth limit, and even a built-in 1 KHz signal for probe compensation. The layout of the buttons is convenient and functions are easy to find. The DMM mode runs independent of the oscilloscope and has relay switching for the V and mV ranges. The device appears well built and the battery lasts a long time (after 30 minutes powered on the indicator appears at about 80 %).

It's a good multimeter and scope for the price. I like how I only need 1 piece of equipment and that it's portable. The screen is high resolution and easy to see in direct light or bright rooms. My only grip is that the controls can be a little clunky and not very convenient. The instruction manual is not not very good and filled with grammatical errors. Once you have it calibrated it's a good scope and multimeter though. Just make sure to charge it.