New bench scope - Fnirsi 1014D, 7", 1GSa/s

[motomanual]

I recently purchased a Fnirsi 1040d and I need to ask the users of this instrument if it is normal that the trigger does not activate when setting times greater than 10msec in Normal and Single mode?
Is it a limitation of the instrument or am I not using it correctly?
Thanks everyone!

[pcprogrammer]

@motomanual see here for an answer to your question.

[pcprogrammer]

Here is a video of someone comparing the FNIRSI-1014D to the Rigol DS1202Z-E.



He finds a lot of limitations of the 1014D, among one of them being the power supply ripple seeping through, I also found during the writing of the open source firmware.

The limitations found are nothing new to ones familiar with the threads on this forum about the scope, but still fun to hear him make conclusions about them.

[Atlan]

Comparing Trabant with Mercedes....

[konst-72]

Hello everyone. I bought a burnt 1014D at an auction. Someone supplied 12V. I replaced the broken stabilizer and op-amp chips, updated the firmware. The oscilloscope started up, there is a response to input signals and adequately responds to all buttons and knobs. But there are still two problems:
1. The FPGA clock generator chip burned out. I would like to ask you to take oscillograms and measure the frequency of the signals at pins 9, 10 of the MC5351M chip. Need a two-channel oscilloscope to see the phase relationship of the signals.
2. The FPGA is partially broken. Two power pins are shorted to ground. I unsoldered them. Question: if I replace the chip with a new one, do I need to flash it according to JTAG after soldering?

Sorry for the noob questions.

[pcprogrammer]

Hi konst-72,

Welcome to the forum.

The clock generator chip is I2C programmable and the two clock outputs are used for different tasks in the FPGA. There is a channel that is used for the main clock and that is fixed at, if not mistaken, 50MHz, and the other channel is used for the sampling clock of the arbitrary waveform generator. It is set by the software up to a maximum of 200MHz.

Just replace the chip with a new one and the configuration is taken care of by the firmware.

The FPGA can be replaced and will get its configuration from the second FLASH chip that can be found in the 1014D. No need to use the JTAG interface. Best to make sure the FLASH chips are also good and the data within them is still valid. As there possibly are versions that use a different FPGA then the one I have, it is best to post the type tag of it here and ask if any one has the proper FLASH content for it.

Mine has the Anlogic AL3-10 in it, and the FLASH contents is attached below. (Remove the .txt extension)

[konst-72]

Thank you for your prompt reply. Now I understand how the FPGA is clocked. The MS5351M chip has already been ordered and is on its way to me. I looked carefully at your 1014D schematic diagram and saw that the FPGA clock generator is programmed from the microcontroller. I hope one problem has been solved.
Now I will order the FPGA chip. I hope this one will work. I think the FPGA FLASH is intact, because the signals on the screen are generally displayed correctly, but there is a problem with the clocking.
Once again, thank you very much for the valuable information on the oscilloscope here and on GitHub.

[pcprogrammer]

The board with the FPGA will do the trick. I have used that same board for testing while I was experimenting with the 1013D FPGA reversal. The 1013D uses the same FPGA as the 1014D I have, and yours looks the same.

Good luck with soldering and check out the thread on the reverse engineering of the 1014D. It provides new open source firmware, but it is not finished and I don't know if and when it will be. Lots of other projects to do that take up a lot of time.

[s-petersen]

I was wondering if anyone that has one of these scopes can measure a DC voltage, and reverse the polarity and tell me if you get the same voltage reversed? Mine has an issue where I get substantially different values. (3.8v vs 4.1v) so I am trying to see if it is a hardware issue, as I have stock firmware, and if someone's scope measures correctly, I have to assume my hardware has an issue. .

[yangyao]

1014D will have a new replacement this year, with the same price, 1.6GS/s sampling rate, 150MHz bandwidth, and no false labeling

[yangyao]

There is also a more expensive version, which only upgrades the bandwidth to 250MHz, and is otherwise exactly the same as the 150MHz version.

[yangyao]

Starting from DPOX180H, FNIRSI's oscilloscopes will no longer be falsely labeled, and 100% actual parameters are guaranteed.

[yangyao]

Sensitivity: 5mV

[yangyao]

Do you think you are competitive compared to your competitors?

[pcprogrammer]

1014D will have a new replacement this year, with the same price, 1.6GS/s sampling rate, 150MHz bandwidth, and no false labeling

Sounds promising, but it depends on the quality of the ADC and front end if it will be any good.

Sensitivity: 5mV

Does this mean that the complete analog front end has been redesigned?

Do you think you are competitive compared to your competitors?

Who are you asking this?

[s-petersen]

1014D will have a new replacement this year, with the same price, 1.6GS/s sampling rate, 150MHz bandwidth, and no false labeling

After tariffs, it will be much more expensive... and their reputation is already suspect because they lied.

[tunk]

1014D will have a new replacement this year, with the same price, 1.6GS/s sampling rate, 150MHz bandwidth, and no false labeling

Reputation is more than meeting specs.
It's quality of hardware and software, and support/updates.
In another thread you say you stopped updating the DPOX180H
a year ago because it's not selling well enough.
This doesn't bode well.
https://www.eevblog.com/forum/testgear/hello-everyone-i-am-going-to-make-a-very-low-priced-1ghz-oscilloscope/msg5889030/#msg5889030

That said, I applaud you for coming here and shedding light
on what's going on behind the scenes. And I hope you will
continue to do so.

[yangyao]

1014D will have a new replacement this year, with the same price, 1.6GS/s sampling rate, 150MHz bandwidth, and no false labeling

Sounds promising, but it depends on the quality of the ADC and front end if it will be any good.

Sensitivity: 5mV

This is the DPOS350P motherboard, which contains a professional analog front-end circuit. The 150M version that replaces the 1014D also uses this analog front-end.

Does this mean that the complete analog front end has been redesigned?

Do you think you are competitive compared to your competitors?

Who are you asking this?

[pcprogrammer]

This is the DPOS350P motherboard, which contains a professional analog front-end circuit. The 150M version that replaces the 1014D also uses this analog front-end.

Please pay attention when quoting someone you either add your text after the quote or modify the setup by copying the start [quote... and end [/quote lines.

Further more, thanks for the photos of the DPOS350P circuit board.

[pcprogrammer]

@yangyao: A question for you. Can you tell us what the "special IC" in the 1013D, 1014D and possibly the DPOX180H is. I'm talking about the 8 pin chip that is connected to the FPGA based on a more or less I2C hardware protocol, and that "translates" information send from the F1C100s to something else based on a fixed algorithm?

And can you explain the reasoning of why this setup has been used?

Is this chip also used in any other of your designs like for instance the DPOS350P. I can not see if it is there. The 8 pin chip besides the Gowin FPGA might be it or it is the FLASH for the FPGA configuration.

A bit of advice in relation to becoming a more professional test equipment provider, is to make sure that the FPGA configuration can be updated from the MCU. For instance the Hantek DSO2000 series, that also uses a Gowin FPGA, uses the slave serial configuration option the FPGA provides. This means that the bitstream resides in the FLASH memory that also holds the firmware.

[Helix70]

1014D will have a new replacement this year, with the same price, 1.6GS/s sampling rate, 150MHz bandwidth, and no false labeling

After tariffs, it will be much more expensive... and their reputation is already suspect because they lied.

No, the price will be the same. Americans will pay more.

[yangyao]

What do you think of this appearance (some details are not yet completed), 350MHz version

[yangyao]

@yangyao: A question for you. Can you tell us what the "special IC" in the 1013D, 1014D and possibly the DPOX180H is. I'm talking about the 8 pin chip that is connected to the FPGA based on a more or less I2C hardware protocol, and that "translates" information send from the F1C100s to something else based on a fixed algorithm?

And can you explain the reasoning of why this setup has been used?

Is this chip also used in any other of your designs like for instance the DPOS350P. I can not see if it is there. The 8 pin chip besides the Gowin FPGA might be it or it is the FLASH for the FPGA configuration.

A bit of advice in relation to becoming a more professional test equipment provider, is to make sure that the FPGA configuration can be updated from the MCU. For instance the Hantek DSO2000 series, that also uses a Gowin FPGA, uses the slave serial configuration option the FPGA provides. This means that the bitstream resides in the FLASH memory that also holds the firmware.

That is an encryption chip, which cannot be cracked. I blocked all information interfaces, including physical bus information, ARM IO interface, ARM algorithm, FPGA algorithm, everything is random, in order to prevent other peers from directly copying the product and causing huge losses.

[Atlan]

Do you know that this sometimes generates errors?

[pcprogrammer]

@yangyao: A question for you. Can you tell us what the "special IC" in the 1013D, 1014D and possibly the DPOX180H is. I'm talking about the 8 pin chip that is connected to the FPGA based on a more or less I2C hardware protocol, and that "translates" information send from the F1C100s to something else based on a fixed algorithm?

And can you explain the reasoning of why this setup has been used?

Is this chip also used in any other of your designs like for instance the DPOS350P. I can not see if it is there. The 8 pin chip besides the Gowin FPGA might be it or it is the FLASH for the FPGA configuration.

A bit of advice in relation to becoming a more professional test equipment provider, is to make sure that the FPGA configuration can be updated from the MCU. For instance the Hantek DSO2000 series, that also uses a Gowin FPGA, uses the slave serial configuration option the FPGA provides. This means that the bitstream resides in the FLASH memory that also holds the firmware.

That is an encryption chip, which cannot be cracked. I blocked all information interfaces, including physical bus information, ARM IO interface, ARM algorithm, FPGA algorithm, everything is random, in order to prevent other peers from directly copying the product and causing huge losses.

Only when you changed the setup of it after developing the 1013D and 1014D then. Because in those two I cracked it with not to much effort.