Products > Test Equipment
New toy(?) scope Fnirsi DPOX180H, claimed 180MHz/500MSps (May 2023)
jld071:
thanks csuhi17, Aldo22 and battlecodder for all your informations and advices :)
Not easy to make a choice , but I can feel more potential in the firnsi, and I already have two good probes from an analog Hitachi oscilloscope, so I can easilly go break the warranty and replace the two capacitors :D
Hopefully the firmware will still evolve , and the phosphor will reveal its full power ;)
Also, even if for the moment I will use this device for check/repair audio systems, power supplies, home automation, I 'm aiming to work on systems where the higher frequency bandwith will be appreciated.
By the way, in term of functionality, there's no such persistence mode on the firnsi dpox180h compare to the zeeweii dso2512g ? (as stated by ptluis who seems to use this regularly).
battlecoder:
--- Quote from: jld071 on October 09, 2023, 08:39:04 pm ---By the way, in term of functionality, there's no such persistence mode on the firnsi dpox180h compare to the zeeweii dso2512g ? (as stated by ptluis who seems to use this regularly).
--- End quote ---
That's correct. There's no persistence mode on the FNIRSI. I guess the phosphor display works a bit like a very short persistence mode, but it's nowhere near as useful as a 1s or infinite persistence, which are both available on the Zeeweii.
Nik:
Derived 90 MHz out of Fnirsi's built-in generator by using custom capture with hi and lows. 150 repeating hi-lo at 600kHz makes 90MHz. Anything higher collapses waveform. That capture can be used to get frequencies from 20MHz to 90MHz. I tried to attach it, but the site seems has some issue with attachments today.
Not sure what is wrong with the site attachments. It throws the error invalid_filename upon uploading a file with any name, eg: 90 MHz.png
https://youtube.com/shorts/4zUMhxtxrIc?si=gP8Y1fB07r4z2NgP
That capture was generated with the software code that I wrote.
https://github.com/nik1nik1/SaveSignaltoFNIRSIGenerator/blob/main/README.md
I also added few AM captures into generator.
PlainName:
--- Quote from: jld071 on October 08, 2023, 09:56:34 am ---So what should I do ? go for the new dpo crossing my fingers to hope for a new firmware which will correct the bugs and give plenty access to the new functionalities or be on the safe side by choosing the already validated dso ?
--- End quote ---
I haven't tried either of the scopes mentioned here, but my experience is:
Fnirsi: Got one of their cheaper scopes for on-the-go fault finding (like, digging inside the control box for garden gates and similar). It had weird bugs (or maybe features) and I hated it so much I gave it away for nothing here on EEVBlog.
Zeewei: Replaced the Fnirsi with a DSO3D12. Didn't expect much but quite impressed with it. Tried a few things to make sure it wasn't going to flake out like the Fnirsi did and it coped well. It is exactly what I bought the Fnirsi for, but a bit better, and for the price I am very happy with it.
Have to say that it would take a lot to have my buy any Fnirsi scope again. Your, and others, mileage may vary.
csuhi17:
I can't give you a suggestion.
This is a rather buggy scope, if it is fixed it can be used for basic tasks.
I only do it as a hobby and less often because of my work, and my knowledge is quite limited.
If I were to buy a scope for work, I would definitely not choose this as my main scope.
Only for smaller, not so important tasks, and I measure with this first so that I don't ruin the more expensive ones if I make a big mistake.
If the persistence property is written into the program, I think it will not be as we expect, since even a single waveform is already multi-color, it shows only the middle of the signal. Even if you set persistence, the last displayed waveform will cover the one behind it.
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