Products > Test Equipment

Another fnirsi fail

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Doctorandus_P:
@ 11:10 the fnirsi DSO-TC3 measures an ESR of 5 Ohm with an elco with a 33 resistor in series.



Yet another example how bad these things are. On itself, a single measurement like this does not mean much, but fnirsi repeatedly makes equipment that delivers unreliable results. They are also appealing to beginners, who are likely to have difficulty in recognizing it is their "test equipment" that does not work properly instead of whatever project they are working on.

Don't be tempted by the reviews that show that fnirsi stuff is capable on showing plausible results in some cases. The problem is that it fails too often, which makes it unreliable and you're always second guessing this garbage.

modoran:

--- Quote from: Doctorandus_P on September 02, 2024, 03:51:35 am ---
Don't be tempted by the reviews that show that fnirsi stuff is capable on showing plausible results in some cases. The problem is that it fails too often, which makes it unreliable and you're always second guessing this garbage.

--- End quote ---

Yes, there are some "influencers" on youtube that don't know how to use the test equipment they get for free.   


Fnirsi has a long track record of lying to customers, why even bother with them ?

pcprogrammer:
Eleshop sells it, so it must be good.  :-DD

Even the reviewer of elektormagazine thinks it is good value for money.  :-//

ArdWar:

--- Quote from: modoran on September 02, 2024, 05:48:37 am ---Fnirsi has a long track record of lying to customers, why even bother with them ?

--- End quote ---
Lack of affordable alternative. As cheap as those Fnirsi junks are, they often still cost a week worth of average salary where I come from.
That's also why DT830 clones are extremely popular here.

ataradov:
Both devices use guessing for ESR, since they don't do the actual testing at frequency. So, I would not say it is specifically Fnrsi fail, but fail of that widely used firmware and testing approach.

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