Products > Test Equipment
TH2830 vs TH2832
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KungFuJosh:

--- Quote from: mawyatt on July 02, 2023, 02:10:43 am ---Another possible issue could be, does the TH2830 have factory calibration parameters for the "extra" frequency ranges that come with the TH2832?

--- End quote ---

No idea. That was my initial concern when I was having issues with the new firmware, but that was likely just me having too many settings to mess with. I'll test stuff in different ranges and see what it looks like. Obviously certain things only work in certain ranges, so I'll have to figure that out too.

I don't know at what point they do the calibration in production. It's possible that they precalibrate before the final model is determined, but I don't know how likely that is.

The reason I had no doubt this would work is because most modern test equipment seems to be manufactured with a "highest possible profit margin" mentality. What separates one manufacturer from another is whether they also care at all about quality (which this manufacturer clearly does). That means the least variation between device versions as possible (avoid hardware changes if possible), with firmware crippling the "lesser" models being the most obvious choice to keep costs down. It's really smart, considering all they needed to differentiate one device from another was a sticker on the faceplate. I would also bet that the device IDs that separate any of these can be programmed via serial over USB on the back panel to keep it simple.
mawyatt:
Our TH2830 came with a 6 page test cal report that was signed by the test tek & dated. It included all the measurement parameters including the range, reference device value, acceptance range, and actual measurements. The frequency range was just 100, 1K, 10K & 100KHz tho. There were 5 signal levels, 10 resistance ranges from 1 to 100K ohms, 7 capacitance ranges from 100pF to 100uF, at all the frequencies indicated, also DCR and Inductance ranges.

There is a paragraph C. DC Bias Level: ([Non]) indicated, so likely the same test procedure for the 2832, maybe with the added frequency ranges.

Anyway, all toll, 98 measurements recorded, indeed very comprehensive test data!!

Best,
KungFuJosh:

--- Quote from: mawyatt on July 02, 2023, 03:12:39 am ---Our TH2830 came with a 6 page test cal report that was signed by the test tek & dated.

--- End quote ---

Ha! Mine didn't come with anything but a "calibration certificate void if removed" sticker on the back...which I removed immediately. 🤣

I know it's not good enough for actual calibration, but I connected probe to probe with the SDM3055X-E and the bias voltage was accurate.

If you were going to get it recalibrated, where would you send it?
Martin72:

--- Quote from: mawyatt on July 02, 2023, 03:12:39 am ---Our TH2830 came with a 6 page test cal report that was signed by the test tek & dated. It included all the measurement parameters including the range, reference device value, acceptance range, and actual measurements. The frequency range was just 100, 1K, 10K & 100KHz tho. There were 5 signal levels, 10 resistance ranges from 1 to 100K ohms, 7 capacitance ranges from 100pF to 100uF, at all the frequencies indicated, also DCR and Inductance ranges.

There is a paragraph C. DC Bias Level: ([Non]) indicated, so likely the same test procedure for the 2832, maybe with the added frequency ranges.

Anyway, all toll, 98 measurements recorded, indeed very comprehensive test data!!

Best,

--- End quote ---

Hmmm...I would have to take a look at the Cal. reports from our ST2830 to see if this was done there in the same way for all areas.
In any case, your report was not created by Tonghui itself, they don't take that much trouble... 8)
luudee:

Regarding certificates, my unit also came with a 6 page calibration certificate ...

first two pages attached ...


luudee
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