Hello everyone, I am the developer of DPOS350P and DPOX180H

[yangyao]

Hello everyone, I am the developer of DPOS350P and DPOX180H, and I would like to communicate with you more，Responsible for all of software + FPGA + hardware

[yangyao]

1GS  350MHz  oscilloscope

[david300m]

Looks interesting, especially for the price. Curious, what is the OS? Thanks for sharing.
David

[Atlan]

No OS has it.
 Why doesn't the 350 have an RTC module? The entire oscilloscope menu looks like a copy of the 1013D.
The price is high, especially when we don't know the actual parameters. And it also lacks an external trigger input.

[yangyao]

和1013D没有任何关系，采用的全新软件架构设计的

[Atlan]

OK. What is the maximal sampling rate? How many signal samples per channel will the fpga take?

[RAPo]

Can we send you requests for enhancements?
One big request: please open the file formats the devices save.

[Atlan]

I don't know if it was necessary to start a new thread about the oscilloscope. https://www.eevblog.com/forum/testgear/new-oscilloscope-from-fnirsi-dpos350p/

[RAPo]

The OP stated that (s)he is involved in the DPOX180H and DPOS350P and is willing to communicate with us.
I think that is something to be applauded for and deserves its own thread.

I don't know if it was necessary to start a new thread about the oscilloscope. https://www.eevblog.com/forum/testgear/new-oscilloscope-from-fnirsi-dpos350p/

[ptluis]

The OP stated that (s)he is involved in the DPOX180H and DPOS350P and is willing to communicate with us.
I think that is something to be applauded for and deserves its own thread.

I don't know if it was necessary to start a new thread about the oscilloscope. https://www.eevblog.com/forum/testgear/new-oscilloscope-from-fnirsi-dpos350p/

Let's hope this is true, and not another way of marketing the new model. If he is really the developer he will get my support, those two devices could be improved greatly.

[yangyao]

The entire oscilloscope was developed by me independently. The main reason is that my dealer’s price is high, and I have no control over it. The price is much higher than I expected.

[ptluis]

The entire oscilloscope was developed by me independently. The main reason is that my dealer’s price is high, and I have no control over it. The price is much higher than I expected.

I completely agree, the price is too high, I've seen prices of €400, which is completely ridiculous when we have oscilloscopes with functions such as decoders, much more memory, superior features. If this product costs around €100, it will definitely sell a lot, if what is advertised works correctly. And if the developer implements and corrects the suggestions presented to him, he will certainly have a best seller on his hands.

[Atlan]

On bangood the price is 240E, which is a high price. because we don't know what parameters it actually has. Interestingly, I still haven't received an answer regarding the sampling frequency. Even the promotional video is so that nothing is visible there. And apparently the developer doesn't answer questions. Just a classic Fnirsi tactic, the main reason why not to buy a device from fnirsi.

[Fire Doger]

For a single person it's amazing, good job!

At my workplace we investigated the possibly to buy low cost scopes and send them to remote working developers.
DPOS350P was my vote because it doesn't look like a "toy" and maybe is noob friendly but unfortunately there are no in depth reviews and teardown.

[ptluis]

For a single person it's amazing, good job!

At my workplace we investigated the possibly to buy low cost scopes and send them to remote working developers.
DPOS350P was my vote because it doesn't look like a "toy" and maybe is noob friendly but unfortunately there are no in depth reviews and teardown.

Reviews will probably only be available in May because they haven't started distribution yet and it seems that they will only start shipping orders during the second half of April.

[Fungus]

Welcome to the EEVBLOG forums!

Have you read them in the past?

[yangyao]

this is fact bandwidth test

[yangyao]

The actual bandwidth is around 400M

[DaneLaw]

The actual bandwidth is around 400M

Fnirsi tends to have a quite "relative" view on "bandwidth".. at least in the past..
*but but' you can still see the waveform, at that frequency = It's the bandwidth.

Are you referring to an attenuated 3 dB droppoint?  (70.7% of a signal's amplitude) ?

[aleksandrs]

Hello! Thank you for giving us the opportunity to talk to you about these great products, it's really valuable!
I have a DPOX180H on its way to me.
I have a few questions, please answer them if possible.

1) Here in this video review:
https://youtu.be/9i_4Eu887gU?si=kZSLi12ISzpr8gXf&t=295
(it's in Russian, but the subtitles seem to translate well)
They say there's a problem with compensation with an open and closed channel up to 10 MHz. Many people in the comments say that the problem does exist, and they also write that it can be solved by soldering a 100 pF capacitor. Is this a problem you know about?
2) Is it planned to add a scale for measurement to the FFT spectrum function? (a cursor would be an ideal solution)
3) At a low sweep speed, the oscilloscope behaves like an analog one, i.e. the graph is drawn from left to right, then the graph is erased and starts to appear again. This is close to what would be on analog oscilloscopes. But this is not convenient when you need to catch an unpredictable transient process that is not caught by a trigger. It would be cool if you added a mode in which the signal curve is continuously generated on the right side, and its history shifts to the left. Is there a chance that you will add such a mode?
4) I really miss the infinite afterglow as it is on younger models like 2C53P, it was really super convenient for catching single very fast events.
Is there a chance that you will add this? (I understand that you did not work on 2C53P, but I assume that you are aware of its functionality)

[yangyao]

This was tested at an amplitude of 1VPP, using a coaxial line to connect the signal generator. The oscilloscope did not have an external 50Ω impedance (because there is no 50 ohm in actual use). The oscilloscope parameters showed the frequency and amplitude of the current signal. The bandwidth parameters of FNIRSI were indeed inaccurate in the past, and the -3db attenuation was not considered.

[yangyao]

DPOS350P is an oscilloscope with further upgraded software and hardware architecture based on DPOX180H. It has a large part of similarity (only oscilloscope function)

[yangyao]

DPOS350P completely beats FNIRSI-1013D, the two are basically unrelated

[Fungus]

Does it have serial decode ability?

The ability to look at serial data is very important now.

[Darkover]

I would say the biggest ability I miss on a new scope is an integrated interpreter for an easy language (Basic, Forth, Python, C) than can work with the sampled data. Look how many programs existed for an old calculater like a HP48 and what this would mean for the usability for a scope.

Olaf