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Siglent SDM3045X - Enough is enough

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tv84:

--- Quote from: Pinkus on January 09, 2022, 06:15:49 pm ---I tried it for me and for you folks: it works without problems. My SDM3045x became a SDM3055x.

--- End quote ---

Post an image, please.

tautech:

--- Quote from: Pinkus on January 09, 2022, 06:15:49 pm ---
--- Quote from: tv84 on December 31, 2021, 07:36:15 pm ---
--- Quote from: tautech on December 31, 2021, 07:18:45 pm ---It's my suspicion it could be done.  >:D

--- End quote ---

OK, in that case, patch the original SDM3055X-E_2.01.01.12.ADS with the following 16 bytes.

Then it's ready to flash in a SDM3045X.  As always, do it at your own risk.

--- End quote ---
Since Tautech assured me that there were ways to undo this (in the case of bricking my unit), I tried it for me and for you folks: it works without problems. My SDM3045x became a SDM3055x.
Beside the extra digit and different ranges (now 200mV / 2V etc. instead of 600mV / 6V etc.) I did not recognize any other differences at the first glance.
Though my SDM3045x is silent, as it comes without a fan. I am wondering if I should add one now, as the SDM3055 does have one afaik.

--- End quote ---
SDM3055X-E is the model it should be now, NOT SDM3055 !
Re the fan, at this time we do not know if the China only X-E model sports a fan. Only measurement stability checks can indicate if it might need one.

tautech:
To those that might also be inspired to flash their 3045X...
Do at your own risk....

3045X don't have a precision divider and instead use SMD components to substitute the Caddock divider used in 3055 and 3065X therefore a flashed 3045X can never be a 3055 but instead the China only model SDM3055X-E.

Pics of the internal differences can be found linked in the POI list in the opening post here:
https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/

Kleinstein:
As there are some HW differences, one should check the lower ranges, if they actually work correctly. A point that may fail could be the input impedance at around 2 V.  A possible way to look at this would be to watch a low leakage 10 nF or so capacitor charge or discharge from some +-2 V. The input current will show as drift rate, that can be measured with the meter itself.

Pinkus:

--- Quote from: tv84 on January 09, 2022, 06:19:38 pm ---
--- Quote from: Pinkus on January 09, 2022, 06:15:49 pm ---I tried it for me and for you folks: it works without problems. My SDM3045x became a SDM3055x.

--- End quote ---

Post an image, please.

--- End quote ---
OK here are pictures. Keep in mind, I have not tested the unit yet, just made the conversion and looked through the menus.

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