Products > Test Equipment
TH2830 vs TH2832
KungFuJosh:
--- Quote from: Martin72 on June 09, 2023, 09:57:23 pm ---
--- Quote ---I still can't find any differences.
--- End quote ---
what differences do you expect to find ?
--- End quote ---
Well, I was hoping to find no differences, and I'm glad it worked out that way. I thought there miiight be something in there separate to support the DC bias voltage source, but it doesn't appear separate.
The only question now is how to get the TH2832 firmware on the TH2830.
Martin72:
So you think with an update file from the TH2832 you will get 20Hz..200khz in 15025 steps(instead 50Hz..100khz in 34 steps), a dc bias adjustment(instead of none) and the ALC (automatic level control) circuit(insted of none)..
Hard to believe but not impossible.
KungFuJosh:
--- Quote from: Martin72 on June 10, 2023, 07:20:47 pm ---So you think with an update file from the TH2832 you will get 20Hz..200khz in 15025 steps(instead 50Hz..100khz in 34 steps), a dc bias adjustment(instead of none) and the ALC (automatic level control) circuit(insted of none)..
Hard to believe but not impossible.
--- End quote ---
Why would that be hard to believe? If we can't find a difference in hardware, there's only one place left...
Also, look at popular modern test gear:
SDM3045X(4.5digits, 66,000 counts) identical hardware to SDM3055X-E (5.5 digits, 240,000 counts); Every modern scope with the "upgrades" and "options" etc.;
AWGs from Siglent, UNI-T, etc. very often identical hardware within the same line, only separated by firmware or options or some other soft limitation.
I'd say it's more believable than not. 😉
Martin72:
I would be happy for you if the TH2830 was simply a software-limited copy of the TH2832.
If one follows the explanations of the Keysight impedance measurement "book", then with the underlying measurement principle (auto-balancing bridge), there is an invisible limit at about 100khz, from which the whole thing becomes more complicated and thus more expensive.
It may of course be that Tonghui first "developed" the 200khz variant and then by means of the software to be able to offer a cheaper derivative.
It would be a great thing for all TH2830 owners to get a better LCR through a firmware hack, no question.
The device is updateable via the front USB, which is already a possibility.
But since there is no firmware (at least I have not found at tonghui), another possibility would be to copy the contents of the chips.
KungFuJosh:
I think you're probably right about them developing one, and then crippling it for the lower model. Oddly enough, both versions say TH2830 on the PCBs, not the other way around.
Hopefully we can find the firmware. The chip copying method would probably be a little trickier.
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