Products > Test Equipment
TH2830 vs TH2832
Martin72:
--- Quote --- I tried ST2832, then ST2830, then TH2830. The only one that accurately measured those was the TH2830 firmware.
--- End quote ---
To me, stupid as I am, it sounds like the "foreign" firmwares can't find the calibration data, wherever that may be stored.
Or there must be a calibration, which is then stored and then also "found".
KungFuJosh:
--- Quote from: Martin72 on July 08, 2023, 08:59:11 pm ---To me, stupid as I am, it sounds like the "foreign" firmwares can't find the calibration data, wherever that may be stored.
Or there must be a calibration, which is then stored and then also "found".
--- End quote ---
I understand the logic of that thought, but I don't agree for a couple reasons. First, the ST2830 had no issue with recalling data or previous states. Only the patched ST2832 couldn't recall previous states, but it did recall correction data (which is stored separately).
Besides that, I know this issue is related to outdated firmware because:
--- Quote from: mawyatt on January 05, 2022, 08:01:55 pm ---You may recall we had an issue with a scale on the TH2830 not reading correctly and reported to Tonghui, which they informed us that they had no authorized resellers on AliExpress where we purchased the TH2830. We contacted the reseller and they made contact with Tonghui and we were allowed to receive an updated firmware which corrected the problem. Recall we had a issue with the 1K range and got correct readings using DCR but not the other modes, worked OK below the 1K and above the 1K range, but not at 1K. You could try different ranges to see if this is a similar effect as we had.
Since you purchased from an authorized reseller have them contact Tonghui for the updated firmware. Hopefully this may correct your issue.
--- End quote ---
I'm looking forward to seeing what version your Sourcetronic firmware is. I'm confident that it's newer than the versions I have.
Thanks,
Josh
Martin72:
Hmm...you might be right.
Lately a thread about a handheld lcr tester from east tester, it has problems with measuring resistance and this is a bug that needs to be solved.
OK, I take my reference to work and measure the resistance under various frequencies and record the version number.
Interesting thing !
luudee:
So I have been following Josh's resistor measurements, and did some myself,
on my TH2832:
On My SDM3065, I did a 4 wire measurement of a random resistor. It reported it
to be 100.36 KOhm.
But my TH2832, reports:
200Khz: 93.36 KOhm
100Khz: 98.70 KOhm
10Khz: 100.18 KOhm
But, then, I looked at the calibration report for resistors (see attached).
It looks like resistor measurements are only specified up to 10 KHz (and below).
So, may be what you are seeing, Josh, is normal operational behavior ?!
PLEASE SEE POSTS BELOW FOR CORRECTION !!!
Cheers,
luudee
nctnico:
Did you do a open/short calibration? What are the accuracy specs for that resistance value at those test frequencies?
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version