【FNRSI Newest Upgraded 2C53T with 2 P6100 Probe】 3In1 Oscilloscope/Multimeter/DDS Signal Generator 50MHz Bandwidth 250MS Sampling Rate 20000 Count RMS for Voltage, Current, Capacitor, Resistor, Diode

This thing is fabulous! For less than a c-note you get a 50 mHz 2 channel oscilloscope, a function generator, an auto ranging multimeter with ohms, ac and dc voltage, amps and milliamps, capacitor tester, diode/ junction tester, and temp indicator. Plus the screen is in color. It will take a picture of the scope screen and save it as a downloadable bitmap.Back when I started in electronics all of these things separately cost me many thousands of dollars. (equivalent to 10 grand now). Totally amazing. I paid more for a Fluke digital multimeter in the 70's than this thing cost. My Tektronix O-scope from the 80's is the size of a carry on, cost $1300 (then) and basically does less.It took me an afternoon with the instruction book (way too small of print, but I'm old) to get familiar with it because all of the buttons are multi-function (short press-long press, menus etc.) but if you use it regularly it should be no problem. You need to be familiar with an oscilloscope and function generator already for it to make sense. The multimeter part is pretty straight forward and intuitive. This is way easier to use than the little $40 handheld scope this company sold previously. (They still have an improved version of that.)I repair a lot of legacy aircraft avionics so this is handy.It came with 2 X1/X10 scope probes, an alligator clip to bnc cable for the function generator, a usbA to usbC charging cable and a handy little man-purse to store it all in. It's a great time to be alive!

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.

I'll cut to the chase; I love this thing. For a hobbyist, it's about as close as you can probably get to a "one and done" diagnostic tool that takes up basically no space and costs less than a hundred bucks.I've had digital multimeters of various kinds for decades now, but I've never owned an oscilloscope and was in the market for one. (I'll probably still get a full-size model with better specs at some point.) I decided to try this thing out because I was about to start a repair attempt on an old cassette deck, and I knew that the service manual called for testing various things out with a scope. The specs on this device are more than enough to handle any home audio repair, so I figured it'd carry me through that project as well as most others I have planned in the near future.And it's doing great for me; it's actually the perfect device to use for this type of project. Importantly, it has a signal generator in addition to the scope and multimeter functions; without that, it would be a lot less useful. But you can easily inject a sine wave (or various other wave types) into an audio circuit and then measure the output; it can generate the signal while in scope mode. That combined with the multimeter functionality really makes basically any kind of measurement you'd need for an audio repair easy with this one device. It should be similarly useful for testing and repairing vintage computers or gaming equipment as well, though I haven't tried to do that with it yet.I was honestly surprised at the build quality, which is quite good. The plastic feels good quality (it's not the cheap, brittle stuff) and the buttons are rubberized and have a quality feel. The connectors don't feel flimsy, and while I've heard some people complain about connecting the scope leads being difficult, I haven't had any issue with it. I think there may be a little trick to getting them twisted in that just seemed intuitive to me, but maybe isn't to some.I go back and forth on the USB-C rechargeable battery. It's definitely a nice convenience now when the device is new, but I've had my other multimeters for more than a decade and I doubt any rechargeable battery is going to last that long. That could make this something of a disposable product. Still, I think it's probably necessary for this type of device; running a signal generator and oscilloscope with a high polling rate and full color screen would probably eat alkaline batteries for lunch. Then again, you could just use some Eneloops or something... or, how about this, guys... standard replaceable USB-C batteries... kind of seems like an idea whose time has come, right?The one kind of puzzling design choice is that the multimeter inputs are not standard distance from each other, which would make adding attachments that span two or more inputs impossible. Maybe this is intentional, to keep you from trying to use things that are unsupported; who knows. But it seems either kind of dumb on Fnirsi's part (did they not know there's a standard spacing?) or worse, anti-consumer. But I only have one attachment like that for my VC-97 (a transistor tester) and I almost never use it because it's kind of a hassle.As a multimeter, I do think there are a few functions missing that my VC-97 has, but nothing that I use very often. Again, it has everything I need to work on what I'm working on. I can test AC and DC voltages, capacitance, continuity, diode functionality, etc. One thing that's not intuitive - you can press the "move" button on some of the multimeter functions to switch submodes. It's a little bit nonsensical, since you can move through the modes with the directional keys on the bottom of the screen, but some modes have secondary modes that need to be accessed with the "move" key, and these are not clearly marked anywhere. I went through my first few weeks wondering why continuity mode wasn't working at all and why there was no AC voltage function before I realized these were secondary modes accessed that way. I was reaching for my VC-97 whenever I needed to do those things, then suddenly realized one day that the Fnirsi actually does have these modes and they work, and I haven't picked up my VC-97 since.In terms of accuracy, I have checked it against my VC-97 and they always agree to within about half a percent or so (and who knows which is actually closer to "correct").Lastly, the package I bought (and I think it comes two possible ways) came with all the leads I needed as well as a nice carrying case. The scope leads it includes seem pretty good and I doubt I'll need to replace them. The multimeter leads, though, I almost immediately quit using because they're both pretty flimsy (I quickly bent one of the tips) and they don't support using attachments like alligator clips. Get some better leads for the multimeter functions; they're not that expensive.Overall, though, I'm really happy with this thing.