2C53T Upgraded Handheld Oscilloscope, 50MHz Bandwidth, 3IN1 Digital Oscilloscope Multimeter DDS Generator, 250MS/s Sampling Rate, 19999 Counts, Voltage, Current, Capacitor, Resistor, Diode Test

This unit seems to gather some hate for not being like a full power oscilloscope. I say it is very cool for what it is, a voltmeter with oscilloscope functionality in a handheld. I have a full size Rigol dual channel scope I like a lot. The biggest difference is the full size has lots of knobs you can turn to smoothly change the timing, volt range and other features. But this is about the same price as a decent voltmeter, and I can certainly see taking this onsite to not just look at the voltage, but see what the line is doing and maybe do some advanced debug without hauling the big scope out.

I bought this to set up my audio equipment in my car and so far I’m more than please with the results, after playing around with and seeing what I can do with it I’m hoping that I can inject a 40Hz signal and take a voltage reading at the same time I’m just not sure this meter will do just that but if it doesn’t I do have another voltmeter to get that measurement. We will see as time goes by and I play around with it to see what this thing will do. Of course I’ll give an update if after time it does more than expected or starts to disappoint. But either way I believe for what I know it can do at this point it’s well worth the money just having a handheld oscilloscope and voltmeter combined.

Generally, this is a pretty good tool for the price. My only problem is that the signal generator cannot produce a proper 1hz square wave. I knocked another star off because their support / chat has not returned any of my attempts to contact. Edit: Adding a star back as support did reach out via Amazon rather than their email address to give me a detailed answer as to why the unit does not produce a proper 1hz signal.

Nice handheld scope. Had it for a few weeks and it seems very functional. Compared some traces with a 4 ch LeCrow and it was very comparable (digital CMOS logic gates). It's a small screen for sure, and the grid lines are a little hard to see even at the highest brightness. The function generator is a bit limited - seems to go up to 50kHz. Another cheap handheld scope I had (and lost) went to 1M. There a multimeter mode as well that looks functional. It plugs into a PC but I think it's to transfer over screen shots - I don't see any SW on their web site to control it remotely over USB. A good deal for sure. A nice case, some ok probes, and some misc cables to use with the DMM are included. I checked them and they all worked in my copy

Needed a portable scope to measure AC noise on DC instrument signals, and this has worked out great. Great price point and the perfect tool for the job. Can do much more than what I’m currently using it for, which is good to know for future needs.

This is simply the greatest thing slice bread. This oscilloscope / multimeter has no equivalent in the below-$100 category. How do I know? I keep buying them, looking for an oscilloscope at $80 with $400 features. Well, this time it worked, mostly. The screen is perfect, the menus are intuitive, the ergonomics is well thought out. You can take it with you thanks to the long lasting battery. The multimeter returns correct values within 0.02 or 0.03 volt, or so. The oscilloscope give me the same curves as my expensive bench one below 50 MHz. The only weird stuff was the wave generator, which works perfectly, until you ask it to give you 1 Hz. It’s downright bizarre. The easiest square wave to generate is off… Too easy?!?

So far the scope seams to barely function. Adjustments to the horizontal often cause the device to restart. Use of the AUTO button often freezes the GUI and you must wait for the battery to die before being able to use the device again. The function generator has a lot of problems. changes to the frequency are not always applied until stopping and starting the finction generators repeatedly. Output frequency doesnt match what is entered. Use of the FFT function does produce a spectrum, but you can not enlarge it, apply markers, or get any reference points, which makes it useless. Thos should be a seperate display like the dmm and oscilloscope. In short, the firmware is not yet ready for market. Have reached out to the manufacturer through amazon and their website. Have yet to receive response. Frequency measurements are much more than 5% off for example setting the frequency to 5hz produces a 20hz signal Firmware v1.0.3 Edit: the manufacturer contacted me and indirectly asked me to recalibrate the device. Their english is not very good so there is a language barrier. This has fixed a lot of the issues with the auto button freezing the device. And I believe it has reduced the number of times the device randomly restarts. Edit: After comparing reading to my fluke87 i started searching for their tolerance list, DC voltage +-(.05%+3) This is a funny way to say +-(3.05%) which is about what I saw. Not going to test the rest, sending it back today. Its good for the price, but after your first year of EE courses, you will have out grown this meter. They offered a full refund very quickly.

This is so close to being very good. It gets the job done in a lot of ways, but falls short in others. The signal generator does not produce smooth signals, as checked on a high-quality DSO, but rather signals with stairstepping. Moreover, the lack of a sweep function is very disappointing. The scope gets the job done, but I have not yet tried the FFT function which others have complained about as I have this functionality in a much better scope; however, I do not doubt that the FFT function lacks any labeling or analysis features. Scope features aside, the multimeter functionality is OK. The autoranging is slow, and in many cases I would like to be able to disable it entirely. In one case, while using the meter to adjust a precision potentiometer, not only was the display too slow to update, but it would not update to reflect small changes to the pot value well within the displayed precision. Needless to say, this is hugely problematic.

水晶振動子の動作確認用に使いましたが正確に発信周波数をとらえています。

Try this it's good Getting femiler with the product

Nice product 👌

Recently purchased, good, complex device, need more time. Thanks 👍

I have used the FNIRSI 2C53T for about few months. It is a small unit with multimeter,function generator and oscilloscope. This makes work easy on a bench. The auto mode is helpful, but I often choose the function myself (volts, ohms, diode, etc.). The oscilloscope is good for my needs. 50 MHz is enough for hobby and school/college work. The menu felt new at first, but after a quick read of the guide and a couple short videos, it was easy to use. The Auto key finds a signal fast. I still like to set the trigger by hand and change time/volts per division, so I can see the wave clearly. The screen is bright indoors. USB-C charging is simple. Battery life is fine for a day of light tests. The probes are OK for the price. For quick checks and projects, this tool saves time and space. I am happy with it and plan to keep using it.