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| DC-Load wanted(Siglent SDL1020X-E found) |
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| delvo:
One downside to the siglent ones is that there is no public calibration/adjustment procedure (Id love to be proven wrong on this) |
| Martin72:
We (at work) had this topic in general a few years ago, regarding power supplies/loads also calibrating (having them calibrated). If you record/measure the voltages/currents with external (calibrated) measuring equipment anyway, then you don't need to have it calibrated. |
| alm:
--- Quote from: Martin72 on January 02, 2024, 03:26:09 pm ---We (at work) had this topic in general a few years ago, regarding power supplies/loads also calibrating (having them calibrated). If you record/measure the voltages/currents with external (calibrated) measuring equipment anyway, then you don't need to have it calibrated. --- End quote --- Sure, but isn't the value in a modern load / power supply the built-in measurement and programming features? Otherwise you could also use an old load or power supply with analog panel meters. You could of course do a software correction yourself before programming / after readback, so if you want it to sink 1 A and you know it's 1% low, you tell it to sink 1.01A. And if you know it reads back 1% high and it reads 1.01A, you calculate this to be 1A. But this is a hassle. I don't understand the trend of particularly the upcoming brands like Siglent to not publish adjustment information. It's not like adjusting a power supply or electronic load is difficult or requires special equipment. A good DMM with an external current shunt for higher currents should be sufficient for 95% of the adjustments. The only exception would probably be rise time tests which would require a scope. |
| Martin72:
--- Quote ---you tell it to sink 1.01A --- End quote --- That's another question, whether you have to have a flowing current of 1A with an accuracy of less than 10mA. Nevertheless, I can try to get more detailed information, which I would then share accordingly. |
| Martin72:
--- Quote from: blackdog on December 30, 2023, 12:38:42 pm ---Maybe build something yourself where you can control some properties yourself? --- End quote --- Hi Bram, In progress... ;) Martin |
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