Hantek3in1 Handheld Oscilloscope, 40MHz 2CH Automatic Digital Oscilloscope, Multimeter, Waveform Generator with LCD Color Screen, Chargeable with Replaceable Lithium Battery, 2CH+AFG+DMM 2D42

TLDR:This is a scope with basic features but comes in at a very low price and (unlike many other cheap scopes) the core hardware meets the advertised specs. A good second scope, in my view. OK as a first scope if portability and price are critical aspects.SpecificationsGetting a true bandwidth measurement requires equipment that I do not have. I do have an OK 50 Mhz generator though and see little attenuation (well under 3 db) when feeding in a 50 Mhz signal. Photos of 1Mhz and 50Mhz are attached for comparison. I would say that the specified 70 Mhz analog bandwidth should be easily achieved. That said, with 250 Msamples/sec, I'd say 50 mhz is a good practical limit for single channel or 25 Mhz dual channel (125 Msamples/sec when dual channel). That's application-specific as it depends on how many samples-per-cycle you consider acceptable.Signal GeneratorThe optional signal generator is basic but it performs its functions well. Attached photos include:- 1 Mhz sin 2V Pk-Pk driving a 50 Ohm load. Looks great.- 25 Mhz sin wave (the limit) with the same specs. A bit of attenuation but not bad.- 1 Mhz square wave with the same specs. Looks excellent with no ringing. I also measured rise time at 6.5 ns, which is excellent considering it's an overall system measurement (cables, oscilloscope, etc)- 10 Mhz square wave (the limit). As expected, it's starting to fall apart a bit at the limit.- An example arbitrary waveform: If you connect PC software, you can program your own waveforms but I have not tried.Overall PROs- Portability. Useful for applications like cars, appliances or other field applications.- It meets its specifications: Note that there is a lot of false advertising from competitors at this price point.- Price: It's very low, but watch for inflated sales prices.- Build Quality: Very impressive at the price point. They even include a nice carrying case and a bunch of useful accessories. You only get one proper probe but a second one will only cost $10 or so.- Not grounded. A bench scope is grounded which is a mixed bag in that you need to be mindful of what the ground clip touches when measuring grounded equipment (i.e. don't try measuring grounded equipment). With this Hantek, the common is floating so you are ok doing low voltage work (high voltage work still needs a differential probe for safety). Also note that the two channels of this scope are not isolated from one another (again, a differential probe is needed for this application).- Multimeter. The multimeter is basic, but it has what you need for most work. I compared it against my Fluke 115 and Brymen 869 and all three agree with one another.- Signal generator (depending on the model): See above- 18650 cells. That means cheap/easy replacements when the batteries are ready to be retired.You are giving up (verses a bench oscilloscope):- Memory depth limited to 6000 points (or 3000 per channel). This is very little memory compared to a benchtop scope. It's ok for viewing live waveforms but you don't get a nice history function, no magnify feature and there is not enough memory for quality XY plots.- Triggering and signal stability not to the level of my bench scope. Still usable.- Limited triggering. You get rising, falling, and either edge. No holdoff time.- Limited Automatic Measurements: You just get the basics of live frequency, min voltage and max voltage. No rise time, pulse width, etc. No statistics over time.- Screen is small: The smaller screen helps portability, but larger screens are nicer to work with.- Interface is more clunky. I don't think this is a deal breaker but there is more menu diving and multiple button presses to complete common tasks. Benchtop scopes generally have similar interfaces to each other so once you learn one you can mostly drive others. This one doesn't work the same so you'll need to look over the manual.- Serial decoding - no CANN, I2C, SPI, etc. These are really useful but you can get a second dedicated device relatively cheaply to cover these cases.- No FFT, although many bench FFTs are a bit of a gimmick as well.

Bought because I dropped a hammer on my crappy multimeter and I've been looking for an excuse to get a new one, I really wanted an oscilloscope too but we all know how expensive they are.I honestly don't really use the oscilloscope feature a whole lot but I have used it once or twice and it works pretty good, the user interface is a little confusing but once you know how to use it it's great. I wish the packaging was a little bigger because after you take all of the accessories out it's kind of a pain to get them back in addition to the DMM.Multimeter does exactly what it says it does, It works. My only real complaint about the whole thing is that the screen turn off time sometimes gets in the way of something that I'm doing, I think you can turn it off so that's not really a huge issue but also it's not very good with when the sun is reflecting off of it, I usually have to find a specific spot for it when I'm doing something or else the reflection of the Sun will just make it completely unreadable so I just keep it in the shade most of the time.Overall it's very solid, works great, I don't know if there's any type of circuit protection built into it but I feel like they're probably is because I've definitely done some things at some point that should have popped a fuse but it just didn't, very nice device and honestly My only regret was not getting the highest tier one even though I'm sure I wouldn't have used whatever that extra thing was, I'm just like that I guess.10/10

I like this scope enough to get two of them. One for work and the other for home. I haven't used it much so far so I may add to this review later. I also haven't used any of the PC connectivity functions (and probably never will). It's a good single instrument for car stereo installs/repairs or other audio work. It's not a substitute for a good lab scope. Better for field work although I plan to use it on my benches for quick checks because I don't have to wait for it to boot like I do for my Tektronix scopes. Not to mention keep the hours down on my high end scopes.ProsCompact size. About the size of a large DMM.Value for the moneyRugged design3 instruments in oneboots fastEasy to learn how to useNice case with good amount of accessories (lacks 2nd scope probe though).ConsOnly comes with one probescreen is a little on the dim sideNo ACmv range on DMMScreen could be biggerNo waveform save optionSounder too quietScreen is of a glossy reflective finish which makes it harder to view in some lighting conditionsAs others have mentioned, stray positive pulses show up frequently.

Great device with a lot of little things other units I tested just did not have or work very well.It has rechargeable battery's that are easy to get to and replace and find online.Unlike some units in this price range you can use all 3 modes at the same time.The AUTO mode works great while still letting you tweak things to your liking.The user interface is super easy but still gives you a lot of options. Double click a button pops up menu 0-9 soyou can type in the freq and so on. No need to hold down for ever to get from 20 to 20k.You can recharge the batt and use the unit at the same time.!! DANGER, you are EARTH GROUNDED when charging with a pc or charger with 3 prong power plug !!!! PLEASE read up on this on YT before you charge and use at the same time !!This was my 4th unit that I tested before finding this unit and I love it. The others just had too many little things missing or a PITA user interface and NON-user replaceable rechargeable battery's or non-rechargeable battery's.