Products > Test Equipment
TH2830 vs TH2832
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KungFuJosh:

--- Quote from: GnomeZA on January 13, 2024, 11:26:12 am ---Ah you mean its inductance looks completely different between 1kHz and 10kHz?
With inductors and changing frequency like that, I would expect some inductors to behave in unexpected ways.
So I'm not completely sure whether to think this is a meter/calibration issue or more data needed.

Don't get me wrong, I'm not writing this off, just trying to think through it in my head.

--- End quote ---
Yeah, I don't understand how they work well enough to speculate on that, but referring back to my previous test when I used the Shannon ST42 tweezers for reference:


The different for the ST42 in those two ranges was 37mH, but for the 2830 it was a difference of 150mH. Now the difference is only 100mH, which is still a bit much by comparison. Maybe somebody else has an excuse for it. 😉


--- Quote ---All of this said, the results still look incredible!

--- End quote ---

Yes, I'm very happy with the improvements now. I'd say it's stable enough to be more trustworthy than any of their previous firmwares.

100KΩ at 100 and 200kHz is still very slightly out of spec, but not as bad as previously. I may test with a different fixture to see if that improves the accuracy in those ranges.
Martin72:

--- Quote ---Results attached.
--- End quote ---

Great work man, and this makes me laugh:


 :-DD :-+
GnomeZA:
I've made the switch on my meter to this firmware.
Thanks again @tv84 and also for the verification @KungFuJosh
KungFuJosh:

--- Quote from: Martin72 on January 13, 2024, 05:05:52 pm ---
--- Quote ---Results attached.
--- End quote ---

Great work man, and this makes me laugh:


 :-DD :-+

--- End quote ---

Me too 🤣

I'd love to know how though. Putting D on the screen isn't difficult, but I have no idea how to cycle through those ranges. Maybe they're based on the impedance range option? I dunno.
Martin72:
This cannot be recorded in this way either; it is a calculated variable that only "works once", for example.
You had intended 1nF/1kHz for this, then you only get one value, namely the value for 1kHz.
In your next table, I would not include this as a range to be tested.
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