Very cool device. Yes, you can have the signal generator and the oscilloscope running at the same time. The software is a bit quirky. For example, just opening the menu item for the signal generator turns the generator on and there's no way to turn it off without turning the device off. Not like that's really a problem, just you never know when the thing you want to do exists or not. Sometimes, you enter a menu and there's no way out of the menu except to restart the device. Of course a restart takes like 3 seconds, so not a big deal. The oscope is not exactly intuitive but I was able to get it working in every test scenario without reading the manual, so it's on par with any other oscope I've ever used lol.Here's one drawback that's pretty specific. I was using a 10 VAC power source so light up a small LED and when I measured the voltage across the 10k resistor using the DMM, it said 5 VAC and the voltage across the LED was 7 VAC. The voltage across the LED was halfwave due to the diode nature of the LED, so I expect the voltage total to run under 10 VAC but it came up over. Weird, but might not be the fault of the DMM, I just needed the circuit to work, so it's all good.

It meets expectations

I watched many reviews for this device before purchasing it. Kerry Wong did a teardown of the previous model from this company, and the build was outstanding (thank you, Kerry). Other reviews had many good things to say about the accuracy. My own thoughts are: - The only thing that I do not like is the plastic feel, but it is a very good price for a unit that is well built. - Very fast startup time for when you need to use it. - Very low battery drain for when you are storing it, and about 6 to 7 hours of usage from a fully charged battery. - The display is bright and clear; medium resolution, but works well for it's task. - The usage is very easy for the multimeter, diode and capacitance checks. The O'Scope layout will take a bit more hands-on till I get used to where all the features are. It really is a nice upgrade from the 2C23 model. - The meter came with a firmware version that is more up to date than what is offered on their web site. *** Very satisfied buyer ***

Great value, solid product!

Cool handheld scope with 2 channels and function genarator. English instructions buried deep in booklet, also translation to english sometimes not as inteligable as should be.

I have several oscilloscopes: A Rigol 1054Z, an old Heathkit/Sony 2 channel analog, a terrible Tenma 20 MHz handheld that's falling apart, and a couple of Hantek USB scopes that I use with an Android tablet. Aside from this, I have an old Extech Multiscope that's really a graphing multimeter (and not exactly a great one). I'm not an expert, but I have some experience using and abusing oscilloscopes.I didn't need this scope, but I had my eye on its little brother 2C23T for a couple of years now. I toyed with the idea of getting a small, 2 channel handheld scope/meter combo that I could use on line-powered (120 or 240v) equipment without having to worry about isolation transformers, differential probes, etc. I wanted something portable, relatively easy to use without a lot of complicated menus to navigate, and reasonably accurate.When the 2C53T was released, it climbed to the top of my list. From reading user reviews, it appeared to edge out the Zoyi Zt703s in terms of usability and user interface, and at the time of this writing it is cheaper from a price-per-feature standpoint than the Hantek or Owon handhelds. I decided to buy it and start putting it through its paces.Mine came with multimeter probes (nothing to write home about but not bad), a pair of 1x/10x oscilloscope probes (perfectly serviceable), and a BNC to alligator test lead (also serviceable). I did NOT get a thermocouple, which is a bit annoying since the meter is capable of temperature measurements. I assume this meter uses k-type thermocouples (which I have) but I don't have an interface to plug the thermocouple into the multimeter sockets. There is an inexpensive Klein interface on Amazon but I'm not sure the dimensions are compatible, so I'll probably just have to buy and try.The manual is equal parts helpful and amusing. The translation is far from perfect, and you have to dig around a bit for the information that you need. It will, however, get you up and running, and it is imperative to read it so you understand how to navigate some of the functions. I had a devil of a time figuring out how to show/hide measurements in the scope screen (spoiler alert-- you long-press the PRM button).Many of the buttons are dual-use. A momentary press will give you one function, a long press gives you something else. It sounds confusing but you get used to it quickly, and the manual does eventually cough up the information that you need.Other things to note:-You can save screen captures of whatever you're measuring on the scope screen, but it's just a bitmap image file. You won't be able to save actual waveform for later analysis, which is something that my USB scopes running on an Android tablet CAN do.-The screen is relatively small, and sometimes getting decent vertical resolution on the scope with two traces running can be challenging. The screen can get crowded quickly with both channels as well as measurements going all at once.-The AUTO button doesn't always pick the best timebase settings. I was checking the output of a step-down transformer last night and it kept choosing a timebase that was way too short to display even a single period of the signal. I always ended up zooming out manually. My Rigol bench scope can lock on with zero trouble, but it's also more than 4x the price of this one.-The traces are colored yellow and blue for channels 1 and 2, respectively. You can color code the scope probes with small plastic bands that snap onto the probe body, and there's a blue band, but not a yellow one. Yes, this is a very minor issue, but WOULD IT HAVE KILLED YOU TO PUT A YELLOW BAND IN THE DAMN BAG, FNIRSI?! Yeah, this is a first-world problem, but I thought it was ironic. Don't worry, I stole a yellow band from another scope probe and now my chakras are realigned.These are relatively minor quibbles. I like this scope a lot. I've even been taking it to work with me so that I can play around with it, and it's fun to tinker with. My Android/USB scope combo is better for almost anything automotive related (the HScope Android app by Martin Loren is PHENOMENAL for the price). Having said that, this scope is cheaper, more portable, and has larger safety margins when working on 120/240v circuits. For simple automotive diagnostics that don't require much data analysis (wheel speed sensor diagnosis, checking what the CANbus signals look like), this would be a very convenient grab-and-go option. It wouldn't be my choice for something like injector or in-cylinder pressure waveforms where I would want more detail, but for simple stuff it's a good choice.It will DEFINITELY be my first choice when I'm screwing around with higher voltage stuff around the house and don't want to risk or drag out my bench scopes. It will also be my go-to when I have to go out and diagnose something non-automotive at a friend or family member's house. I can grab this and have a scope and meter with me in a single convenient package.If you're just starting off, if you don't have room for a bench scope, or if you're on a tight budget and need one tool that does multiple jobs relatively well, this is a very good choice. I'll update once I use it more.2-month UPDATE:I've been playing with this scope a bit and I'm impressed overall. Mostly I've been using it to experiment with low-voltage stuff (automotive MAP sensors, a fuel tank pressure sensor, etc.). Here's what I can tell you:-The cursors measurements are nice to have. It's one thing to have automatic measurement of something like peak-to-peak voltage or frequency, but even better is the ability to add cursors to measure the amplitude or period of a signal at a particular location.-Adjustment of the cursors is a bit fiddly. Like with most of these small scopes, you have to toggle to the correct mode (cursor adjust) and then use arrow keys to move the cursors around. You get used to it but it'll never be as nice as a bench scope with actual knobs.-Another nice thing about actual knobs on a scope is that they can be adjusted without looking. I can adjust vertical or timebase settings on my bench scope without taking my eyes off the screen. Good luck doing that with this (or just about any) small portable. This isn't really much of a concern UNLESS you want to use this as a replacement for a bench scope (like if you're replacing an older analog scope, for example). Not a criticism, just a fact of life.-FFT appears to be useless. Yes, you can turn FFT on for one or both channels, and you'll get a VERY tiny (less than 1/4 of the already-small screen) display of the frequency domain of the signal on that channel. However, there is no information at all about what frequencies the FFT is displaying. All you get is a purple graph showing some lines. A few of the lines will be much longer than the others, but that's where the information ends. For the price point I suppose I can't complain, but this is a legitimate gripe against this scope. I wanted to see if I could measure resonant frequencies using something like a microphone or piezoelectric transducer, but I definitely won't be able to do it with this scope.-X-Y mode DOES work, at least in my preliminary testing. I don't use X-Y mode currently, but I might make a quick and dirty "octopus" (look up "oscilloscope octopus" for tutorials and explanations) just to be able to test capacitors, diodes, etc. Why? Because it's fun, and because I like to learn.-One thing that I missed initially: When you plug a charging cable into the scope, there is a small LED that lights up near the port. It will be red until the scope is fully charged, then it will turn green. I missed the LED entirely the first couple of times I charged it, then I realized that it indicates a full charge by changing color. This is a nice detail.-The BNC connectors are recessed into the top of the scope. This means that some connectors will not physically fit. I have a BNC-to-BNC adapter that I can use in cases like this so it has been more of an annoyance than an actual deal-breaker, BUT I have to remember to keep it in the scope's case. If you have a special probe that you need to use with this scope and the BNC connector doesn't fit, you'll need to do something similar.-Battery life appears pretty good. I've played with it for an hour or two at a time and never used more than 1/3 of the battery life. Fnirsi's claim of 6 hours is probably not that far off.Aside from the FFT being useless, this remains a good, basic scope for simple diagnostics. It certainly has limitations, but it's proving to be a useful piece of equipment.