| Products > Test Equipment |
| Shannon ST42 LCR Tweezer Test and Comparison Thread |
| << < (7/28) > >> |
| Martin72:
The display looks good, OLED is simply hard to beat. The information about charging is also nice. |
| Martin72:
--- Quote from: KungFuJosh on June 28, 2024, 06:06:30 pm ---I received my new test PCB. I'll have the parts order in on Monday, and then I'll run a bunch of tests too. --- End quote --- This would be a good opportunity to have your TH2832 calibrated. If its basic accuracy (0.05% is excellent, it could hardly be better) is confirmed, you can measure your board and the values determined would then actually have reference status, as your other LCRs are clearly above the accuracy of the TH2832, especially the ST42. |
| KungFuJosh:
--- Quote from: Martin72 on June 28, 2024, 10:00:35 pm ---This would be a good opportunity to have your TH2832 calibrated. If its basic accuracy (0.05% is excellent, it could hardly be better) is confirmed, you can measure your board and the values determined would then actually have reference status, as your other LCRs are clearly above the accuracy of the TH2832, especially the ST42. --- End quote --- I think my ST2832 cal hasn't expired yet. I don't really know where I would send it for calibration anyway when the time comes...which will also be based on the test board to see if it still agrees, or drifts too much. I don't really have a need for a certificate beyond saying that it has a certificate on here. 😉 |
| Martin72:
--- Quote ---I think my ST2832 cal hasn't expired yet. --- End quote --- You had turned your 2830 into a 2832, so there is no longer any question as to whether. --- Quote ---which will also be based on the test board to see if it still agrees, or drifts too much. --- End quote --- You take the trouble to design a test board and equip it with components that have a value and a tolerance. This means that the respective value can vary, and if you are unlucky it will be out of tolerance. To be able to determine this properly, you need a measuring instrument of which you know where its own tolerance lies. And this must be documented. Factory calibrations are not to be trusted at first, if you want to use a device as a reference, you should have it "neutrally" calibrated. --- Quote ---I don't really have a need for a certificate beyond saying that it has a certificate on here --- End quote --- Then you don't need to buy a measuring device, which is very accurate according to the manufacturer's specifications; a guessing tool will suffice. ;) Now seriously. I buy brand A because it's supposed to be accurate, but I'm not really interested in whether it's really that accurate, the main thing is that it shows something I expect. :P I may see it too narrowly, because I have been checking things professionally for over 20 years and have to provide corresponding proof that everything is correct. Either way, it's not my thing. My problem, no question. ;) |
| KungFuJosh:
Sure, but I could get the ST2832 certified...if I knew where to have it done. Or I could have my test board certified. Or both. But either way, I don't know where to have it done. I'm also not willing to spend $500 for certification of either. --- Quote from: Martin72 on June 28, 2024, 10:44:39 pm --- --- Quote ---I think my ST2832 cal hasn't expired yet. --- End quote --- You had turned your 2830 into a 2832, so there is no longer any question as to whether. --- End quote --- I get what you're saying, but that was not really different than a firmware update. Most home users don't recertify with every firmware update. 😉 |
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