Products > Test Equipment
New toy(?) scope Fnirsi DPOX180H, claimed 180MHz/500MSps (May 2023)
csuhi17:
--- Quote from: battlecoder on September 20, 2024, 05:57:32 am ---
--- Quote from: Dezmond2 on September 13, 2024, 07:26:14 pm ---
--- Quote from: csuhi17 on September 12, 2024, 03:58:24 pm ---https://youtu.be/9-EHjiijSA0?si=4e3-Bn9dDtOr_Geo&t=275
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I see BW 180Mhz is real...what about real sample rate...maybe count points on of zoomed wave...
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I don't think it's real. Based on the sampling rate and everything, it looks to me that they are doing a lot of interleaving to get to those numbers. I don't think it would behave well with a non-periodic waveform. At least based on my tests.
It's still a pretty usable scope and one of the best handheld scopes I've tried, but I do not think they fully meet the specs.
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500 MSa/s may be real, the fastest rise time measured with it was between 3 and 4 ns. I couldn't measure it more precisely, just by eye.
I was able to get a 4ns rise time with a single trigger. Which was the same on the Owon HDS2202.
Whichever principle you follow, a 500MSa/s scope will never be 180MHz, only for repetitive samples.
Bandwidth (Hz) = 0.35/rise time(s) or sampling rate/10 .
Rigol DG912Pro, pulse, 3ns Rise time, 1Hz.
IMAGE1 with Owon HDS2202
12 with the DPOX180H
One of my biggest concerns, besides the many bugs, is that it often freezes. No new firmware for almost a year?! forgotten project...
otherwise it can be used.
Florentino:
Hello everyone.
I heard that when using high-quality probes, the oscilloscope errors are not so large. Surely there are people here who have expensive high-quality probes, have you checked their effect on the readings?
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