| Products > Test Equipment |
| TH2830 vs TH2832 |
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| KungFuJosh:
--- Quote from: nctnico on July 10, 2023, 04:42:51 pm ---Where it comes to uphacking, a few questions remain unanswered that need further investigation now it turns out uphacking an ST2830 to ST2832 is not working by just patching the device selection. - Is the CPLD program different between TH2830, ST2830 and ST2832 firmware versions? - What is the third data blob inside the firmware image? --- End quote --- Further investigation is needed, but we also need to be certain that the firmware we're using is reliable. Here's what we know: Both of the ST versions of the firmware we have show older version dates than the Tonghui version. The newer Tonghui fw version (2021-10-14) was supplied to correct a similar bug to what I'm experiencing with both ST firmware versions. My device sticker says TH2830: Flashing ST2830 (2020-04-16) is mostly good, but has similar measurement bug that needs to be fixed. Flashing ST2832 (2019-04-23) measurement bug is worse, and has issues recalling "previous state" but appears to recall correction. All advanced functionality appears to work as expected otherwise. Operationally appears fine besides those bugs. It stands to reason that the Sourcetronic firmwares are outdated and contain similar bugs to what was experienced with the outdated Tonghui firmware, and the results agree with that. It's not unreasonable to presume that the oldest firmware is the least developed. We either need a better TH2832 firmware, or newer/better Sourcetronic firmware. |
| Martin72:
--- Quote from: KungFuJosh on July 10, 2023, 02:17:33 pm ---Don't forget it needs to be warmed up for 30 minutes before correction. 😉 --- End quote --- It´s not the first time I´m working with it. ;) Made no difference but after open/short cal it "gains" one kiloohm more.. 8) First a few pics, startup screen and then pics from the inside after loosing the three screws.. ;) Seeing pictures or see it in real makes a difference - I was surprised about the good building quality. If I hadn´t the hioki, I would buy one. A little bit later the results from measuring on the dmm checker. |
| KungFuJosh:
--- Quote from: Martin72 on July 10, 2023, 06:01:37 pm ---Made no difference but after open/short cal it "gains" one kiloohm more.. 8) First a few pics, startup screen and then pics from the inside after loosing the three screws.. ;) Seeing pictures or see it in real makes a difference - I was surprised about the good building quality. If I hadn´t the hioki, I would buy one. A little bit later the results from measuring on the dmm checker. --- End quote --- Hey, that 1kΩ is closer to the expected value. 😉 Agreed, excellent quality. As I expected, the hardware is identical, as is the silkscreen: Edit: Did you get any photos that show the silkscreen better beneath the IEC inlet? It looks identical to mine, says VER1.9@2, but we can't see the year. Mine says VER1.9@2019.9. I'm curious what the year difference is between A6 and A7. Not that it really matters. 🤷 Edit again: lol, I just looked at luudee's photos, and your transformers are identical except ST added a nice sticker to yours. Since your firmware version is the same, I think I'll reflash it and see if the bug is really there or not, or if I was going too quickly. Edit again again: I think I may also try some THT 100KΩ resistors with a different fixture. My SMT fixture is the only off-brand one. We really need some TH2832 firmware. |
| Martin72:
Hi, Can open it up again in 2.5 weeks... ;) Here the results of the resistance measure, worst case deviation is appx 1.4% when DCR is the reference. |
| zrq:
I guess we need more in depth look at the firmwares. |
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