Products > Test Equipment

SDM3045X to SDM3055X-E "Improvement" Thread

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Tjuurko:

--- Quote from: flo.b on October 30, 2023, 11:28:31 pm ---Has anyone tried the Siglent SCD30A shunt after a successful conversion?
--- End quote ---
My SDM3065X last FW V3.01.01.12R1 (2022.11.29) definitely doesn't have that option.

glitchcatcher:

--- Quote from: KungFuJosh on October 31, 2023, 01:30:23 am ---Actually, it's not on the standard SDM3055 either.

--- End quote ---


--- Quote from: Tjuurko on October 31, 2023, 04:39:37 am ---My SDM3065X last FW V3.01.01.12R1 (2022.11.29) definitely doesn't have that option.

--- End quote ---

Ah, what could be is that the shunt first has to be "detected". The manual states: "Inserting SCD30A during the SDM in shutdown state; "
If possible, try to connect a shunt (0.01 Ohm?) to the HI/LO terminals, then turn the device on and switch to DCI.

KungFuJosh:

--- Quote from: flo.b on October 31, 2023, 10:29:57 pm ---Ah, what could be is that the shunt first has to be "detected". The manual states: "Inserting SCD30A during the SDM in shutdown state; "
If possible, try to connect a shunt (0.01 Ohm?) to the HI/LO terminals, then turn the device on and switch to DCI.

--- End quote ---

I had the same thought. Might be worth a try.

tautech:
Will try also on return to base. Have shunts in the SHS820X package.

KungFuJosh:

--- Quote from: tautech on October 31, 2023, 11:47:45 pm ---Will try also on return to base. Have shunts in the SHS820X package.

--- End quote ---

I tried with a shunt I made that said 0.4Ω in continuity mode. Didn't do anything on either of my DMMs. I inserted it in a powered off state, and then turned it on, and there was no change.

Except I noticed something weird on the real 3055. For some reason, every time I power on, it switches to continuity mode. Power on state is Last, and Last was DCI. 🤷

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