FNIRSI 2C53P Overview, Teardown & Hardware Review 

Thank you very much for your comment Daniel. Great to hear that you found the video useful. Interesting point about reliability/durability ratings. Let me think on it :)

Hi, thanks for your comment and glad it was useful to you. Yes, it will be interesting to see how it performs.

Agreed!

X2

Thanks for watching. Well as long as you are aware of the limitations of this device! I always revert to my trusty fluke!

Thanks for your comment. Let us know how you get on with it!

Thank you for the feedback for the upcoming functional and performance test. Much appreciated!

It would be nice if you got this (or another) oscilloscope and didn't expect the test result.

Perhaps some of your husband’s chores require him to have an oscilloscope? 😅😅??

Спасибо за ваш комментарий. Я согласен с вашей оценкой. Учитывая простоту текущего шунта, ваши результаты не удивляют. Я проведу тесты и одновременно буду следить за температурой шунта.

Thank you for sharing this information. I am seeing similarities during my tests.

I wrote about it yesterday, but the message was deleted (perhaps because of the link given) ... About measuring the frequency with an oscilloscope: as already written on a well-known forum, the oscilloscope incorrectly determines the frequency of the signal. In my instance, this happens on channel 1, the second channel determines the frequency CORRECTLY! I wonder how it is on your oscilloscope?

Thanks for this. How unusual! I will finish my tests this weekend and will let you know. I assume this is also with firmware 1.7.1.5?

@@ElectroBananasYT Yes, this is also on firmware 1.7.1.5. That is, the first channel cannot measure the frequency correctly, and the second one measures everything correctly (I used the FY6900-100M signal generator for testing, with its BNC-BNC cables, the MCX-BNC adapter used a different, shorter one.). By the way, the rectangular signal is still somehow visible that it is rectangular, up to a frequency of 16-18 MHz. After 61 MHz, the oscilloscope almost does not see the signal (well, that's understandable, no one promised us anything else). Well, the multimeter greatly underestimates the capacitance measurement readings (in the lower range, and, let's say, 4700 UF, it already overestimates a little). Apparently, it will not be possible to adjust this.

Thank you Ivan, I will compare with my results

Thank you, hope the review was useful. I am also trying to confirm what that 64kB memory translates to in terms of sample points. Will give this some focus in my next review. Do you have the Owen?

Thanks also for sharing the bug on the coupling, I will see if mine has the same issue.

@@ElectroBananasYT Yes currently i have some, HDS272S, HDS2202, DPOX180H, 1103D, sigpeak dso1511e+, Micsig To1104, Micsig STO2202C and Rigol HDS924S. I was very disappointed with the 1103D when I tested it, it was my first scope, then I bought the sigpeak.😐 sometimes the Fnirsi release something good and useful, but later they destroy it.😱 Fortunately, the SG-004A that I have is good😎, but something was messed up in the later editions, I think they wanted to save money and caused inconvenience to the customers.😱😭 The most obvious is the radioactivity meter, the first series was still good, the others already contained cheaper tubes, they also saved money on the tube voltage adjustment circuit, etc.😡 I don't think Fnirsi is reliable. Owon is not perfect either, they also have bugs in their products, but you can at least notice the higher quality attitude. DPOX180H bugs have not been fixed yet. They know about the faulty part, two capacitors. But it wasn't fixed. They lied in the specifications of the 1013D and 1014D. I intended the 2C53P for my brother, because he is a simple electrician, but if this scope knew what was written about it in the spec, then it would have been very good for him. I've had problems with it so far. 1. AC DC coupling bug. 2. I can't handle the display properly with my finger, probably because it was designed for people with smaller fingers. It doesn't have band control. I mean that the trigger can only be set up on the right side, down in a thin band. The channel can only be moved up and down on the left side. And the trigger time in the upper bar. The measurement can be done in the middle of the screen. Or something similar. sensibly thought through. 3. when I press pause on it and start pulling it apart on the time axis, there are times when the wave does not change and it is not possible to go below a certain magnification. This scope doesn't work like any of my other scopes. I tested the memory by setting the two scopes, the HDS272 and the 2c53P, to the same time base, adding a higher frequency square signal to both. I pressed pause on them and started zooming in on it. I trust Owon, if it says 8kp, then 8k is the point in each time base. I would probably guess 5-10 kp, depending on the time base. It's not 100% accurate, and it's quite an unpleasant procedure, but at least it gives a good approximation. At least more believable than what Fnirsi described. But using the 1013D as an example, the available memory changes depending on the time base setting. And since it can only be saved as an image, it can't be saved in .csv, so I can't count it. not like in the case of Owon. 4. The bug was that the wave could not be moved to the side after the pause. 5. I wouldn't dare to use the part of the multimeter above 400V, it doesn't seem safe. I didn't just mean the fusible fuse, but its entire design. If something goes wrong, and the arc is zig-zagging inside, I don't think the action reaction of Lithium would be funny. Its signal generator is usable, but has a small DC offset that increases with frequency. I prefer to calculate the frequency of a device from the rise time of the square wave signal, using a single trigger, because then there is no chance that skilled programmers oversampling the signal. averaging and other clever algorithms. But this scope cannot be measured that way, only with your method. Anyway, it would be a good scope. It's just that I 6. At a higher frequency, the scope needs more data to calculate the frequency of the wave. My other scopes tell me in a period or two...

Hello, thank you for your very comprehensive reply. And thank you for all the bugs / observations that you have shared. I will take a look at those to see if they exist with the latest firmware when I do the functional review. I would not want to give this to an electrician - they may try and use the DMM on AC mains - I would not trust it. You do have a lot of scopes!!! Your response seemed to be truncated? Thanks again, ElectroBananas

@@ElectroBananasYT If I have some time, I'll try to put some insulation around the DMM panel. 1000V rated huh funny... The thicker green "plastic" adhesive tape used inside the equipments might be enough. i will do wrap around. I also left out why the parameter where there are only two pieces, such as AC/DC coupling, must be set to that rotary crap, why can't it just be a switch or button? I still have to think about the rest, whether it's an user error or a bug.🤔 Yes, as soon as I outgrew one and bought the next one, I kept the older one out of nostalgia.😎 Some are now on loan to a friend. It comes in handy when you can examine two or more independent signals at the same time, and you can solve them with three small hand-held instruments. Of course, this also depends on use. When I just need to look at the frequency change or simple signal distortion, etc. Or when my dear colleague cannot decide with his multimeter whether he is measuring ACV, DCV or AC+DCV. it comes in handy for the cheaper illustrative tool.🤣 I'm really looking forward to your next video, I'm also very interested in your full opinion on it.

どういたしまして。動画を興味深く思っていただけて嬉しいです。私は古い日本の技術が大好きで、カシオの電卓はとても信頼性がありますね！

I know, it is a very big boo boo! Terrible PR for them and makes you question their QA processes. I also don’t like the use of the word ‘Gear’ instead of ‘Mode’ when selecting the mode of their multimeter function.

Hello Cristian. For a general purpose portable scope meter, I totally agree with you. I would choose the 2C23T and save some money.