Products > Test Equipment
TH2830 vs TH2832
KungFuJosh:
--- Quote from: Martin72 on July 02, 2023, 02:47:14 pm ---
--- Quote from: mawyatt on July 02, 2023, 01:11:39 pm ---See below!! It came directly from Changzhou Tonghui Electronic Company Limited!!
--- End quote ---
Exceptions confirm the rule.. ;) :)
--- End quote ---
What exceptions? I'm the only one here that didn't get cal sheets from them, so I think that makes mine the exception. 😉
Actually, I'm curious to see what your ST cal sheet looks like. Did TH do the cal before sending to ST, or did ST do the cal after receiving it?
KungFuJosh:
--- Quote from: mawyatt on July 02, 2023, 01:24:54 pm ---Probably the usual Cal Labs here in US. Expect a hefty bill tho
--- End quote ---
I've never sent anything for cal before, so I have no idea who is trustworthy. What is hefty? Over $200? More?
Martin72:
--- Quote ---Actually, I'm curious to see what your ST cal sheet looks like. Did TH do the cal before sending to ST, or did ST do the cal after receiving it?
--- End quote ---
I'll have to check the archives to see if there was a calibration record.
We have had the device calibrated externally since 2021, because otherwise we would not be allowed to use it.
Of course, it would have been great if we had also had such a protocol, which ludee and mawyatt had received, because then you can make a nice comparison...internal vs external according to ISO and DakkS standards.
I'll check tomorrow how many protocols are stored in our database.
KungFuJosh:
--- Quote from: tv84 on July 01, 2023, 08:41:54 pm ---SO, everything as expected.
--- End quote ---
Unfortunately, there's a bug/flaw in the patched firmware. Normally the meter remembers the last state of the device. For example, which func mode (Ls-Rs, Cs-Rs, etc.), speed, etc. With the patched fw, that state is lost after power cycling the meter.
I downgraded to the stock st2830 fw, and set func, speed (and avg), Vm/Im to on, and restarted. It remembered everything as expected.
Upgraded back to st2832patched fw, and those settings were lost. Redid those settings, and power cycled. All lost again.
Did compensating for the checksum require modifying something else? Or any other idea why this is happening?
Thanks,
Josh
tv84:
--- Quote from: KungFuJosh on July 02, 2023, 04:12:14 pm ---
--- Quote from: tv84 on July 01, 2023, 08:41:54 pm ---SO, everything as expected.
--- End quote ---
Unfortunately, there's a bug/flaw in the patched firmware. Normally the meter remembers the last state of the device. For example, which func mode (Ls-Rs, Cs-Rs, etc.), speed, etc. With the patched fw, that state is lost after power cycling the meter.
I downgraded to the stock st2830 fw, and set func, speed (and avg), Vm/Im to on, and restarted. It remembered everything as expected.
Upgraded back to st2832patched fw, and those settings were lost. Redid those settings, and power cycled. All lost again.
Did compensating for the checksum require modifying something else? Or any other idea why this is happening?
Thanks,
Josh
--- End quote ---
The patch doesn't go there near. Maybe the info is stored as ST2830 (Ax) and when the software tries to retrieve it as ST2832, it fails.
That's why I say that a direct change in the FRAM/whatever from Ax to Cx would make all good without FW patchings.
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