| General > General Technical Chat |
| Is this product a BS didn't it? |
| (1/7) > >> |
| vaualbus:
I watched last week this video and I was already convinced that the device was a scam. How you test an USB3 cable and produce "eye diagram" without at least a fast FPGA and fast ADC/DAC on which I would assume you need a pretty big heatsink? I recall I went to a keysight meeting a while ago where they show their at the time top of the line scopes (63Ghz @80 Gbs/s or what was) doing automatically validation and compliance test on USB3 buses, that is what you need :-DD So I guess that machine is trying to do a frequency analyzes of the cable and match the results against a know database? And produce "fake" eye diagram? Your opinion is appreciate because I got already angry on the "wrong" eye diagram definition that was given on the vide. |
| wraper:
You don't need some super fast ADC for something like that. Working as sampling scope is more that enough for such application. |
| vaualbus:
Still you do sampling ok, but can you characterize 10gbs lines? You have to at least generate such PRBS sequence? |
| langwadt:
--- Quote from: vaualbus on October 17, 2021, 07:45:20 pm ---Still you do sampling ok, but can you characterize 10gbs lines? You have to at least generate such PRBS sequence? --- End quote --- you can probably do that with just the phy for the various standards |
| eti:
As clever as Linus is, he is NOT an electronics or test eqt channel, and were I him, I'd surely delegate that kind of approval to someone live Dave, or countless members here. |
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