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Author Topic: New oscilloscope from Fnirsi DPOS350P  (Read 108205 times)

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Offline Atlan

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Re: New oscilloscope from Fnirsi DPOS350P
« Reply #800 on: January 17, 2026, 04:40:53 pm »
What kind of FPGA is inside?
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FNIRSI 1013D Always provide a picture or video with the problem where the parameters of the oscilloscope are visible, and a picture of the diagnostic screen with the values.
Firmware is here (or not) https://github.com/Atlan4/Fnirsi1013D/tree/main/Guide%20to%20firmware
 

Offline Grandchuck

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Re: New oscilloscope from Fnirsi DPOS350P
« Reply #801 on: January 17, 2026, 10:02:28 pm »
Gowin FPGA, I think ... but not sure.
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Online SiliconWizard

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Re: New oscilloscope from Fnirsi DPOS350P
« Reply #802 on: January 18, 2026, 12:59:18 am »
Yes a Gowin FPGA from the GW1N-LV9 series.

This guy has done a review and (partial) teardown of it: https://youtu.be/nILiuOlv9V8?t=2884
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Offline Atlan

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Re: New oscilloscope from Fnirsi DPOS350P
« Reply #803 on: January 19, 2026, 02:21:45 pm »
That explains some things.
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FNIRSI 1013D Always provide a picture or video with the problem where the parameters of the oscilloscope are visible, and a picture of the diagnostic screen with the values.
Firmware is here (or not) https://github.com/Atlan4/Fnirsi1013D/tree/main/Guide%20to%20firmware
 

Offline Grandchuck

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Re: New oscilloscope from Fnirsi DPOS350P
« Reply #804 on: January 19, 2026, 03:57:17 pm »
Quote from: Atlan on January 19, 2026, 02:21:45 pm
That explains some things.

Would you like to elaborate?
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Offline Atlan

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Re: New oscilloscope from Fnirsi DPOS350P
« Reply #805 on: January 20, 2026, 07:57:05 am »
They couldn't use GW1NR-LV9 because it has slow RAM write, they also couldn't use hmcad1511 because fpga doesn't have the necessary fast interface. so they had no choice but to use 4x some converter about 250Msa, Even with GW1N-LV9 it may be at the speed limit of fpga. And limited sample memory 32k per channel, 64k total. Of course I could be wrong. They just went for the lowest price.
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FNIRSI 1013D Always provide a picture or video with the problem where the parameters of the oscilloscope are visible, and a picture of the diagnostic screen with the values.
Firmware is here (or not) https://github.com/Atlan4/Fnirsi1013D/tree/main/Guide%20to%20firmware
 
The following users thanked this post: Grandchuck, mishail71

Online prolux

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Re: New oscilloscope from Fnirsi DPOS350P
« Reply #806 on: Today at 02:26:24 am »
DSOS350P
Fan noise fix, put a IN4001 in the fan supply lines, the .5 voltage drop makes it not a vacuum cleaner
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