Products > Test Equipment

New toy(?) scope Fnirsi DPOX180H, claimed 180MHz/500MSps (May 2023)

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Rooster Cogburn:
Yeah, they patched this already but I also noticed that vertical features are still too faint sometimes...

csuhi17:
The 1206 does not fit me, there is 2 mm between the outer edges of the soldering points.

battlecoder:

--- Quote from: Rooster Cogburn on September 25, 2023, 12:30:39 am ---Yeah, they patched this already but I also noticed that vertical features are still too faint sometimes...

--- End quote ---
Ok, thanks for your post. I assumed mine was running the latest firmware but apparently wasn't. Downloaded V30 from FNIRSI's website and the wave looks a lot better now  :-+
I amended my original post.

csuhi17:
I replaced the capacitors.
So far it seems good, directly connected to the function generator with a 50 Ohm load, the measured voltage value does not change much between 0-60Mhz.
With the 10x measuring needle, on the other hand, the error is visible in AC/DC mode.
If you set it in the middle, I still think the distortion is tolerable.

I measured 230V AC, the difference between Fnirsi and HDS272 (in multimeter mode) was 3Vrms.

Regardless, as long as there is no "persistence" mode, I think phosphorous imitation is worthless.
if you set the brightness of the waveform to 100%, you won't be able to see the fast spikes clearly either.

Also, compared to the fact that it says 500M sampling is only 250M with the HDS more reliable trigger at the same setting.

Is there any information about the storage length? can "Storage Depth 120Kpts" be real? Do you know this only at a given time setting? so far I managed to squeeze 2-5K out of it, if you counted correctly.
Or maybe I misunderstood something.

battlecoder:

--- Quote from: csuhi17 on September 25, 2023, 08:20:51 am ---So far it seems good, directly connected to the function generator with a 50 Ohm load, the measured voltage value does not change much between 0-60Mhz.
With the 10x measuring needle, on the other hand, the error is visible in AC/DC mode.
If you set it in the middle, I still think the distortion is tolerable.

--- End quote ---
It's in 10X that I was seeing the problem (and still am, after replacing the cap). Not sure if I ever tried x1, but probe compensation is done with the probe at 10x, which is how I noticed.
Glad to hear I'm not the only one still watching a difference at 10x, after the cap "fix".


--- Quote from: csuhi17 on September 25, 2023, 08:20:51 am ---Is there any information about the storage length? can "Storage Depth 120Kpts" be real? Do you know this only at a given time setting? so far I managed to squeeze 2-5K out of it, if you counted correctly.
Or maybe I misunderstood something.

--- End quote ---
I would love to know how to test/measure that. How are you counting?

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