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HOW TO CALIBRATE SIGLENT SDG1032X
KungFuJosh:
--- Quote from: bdunham7 on October 16, 2023, 10:01:13 pm ---Not "precision" perhaps, at least not at the level the OP seems to need, but these AWGs are a perfectly fine source for DC voltages within reason and reading the specs, of course. They're also not a terrible current source within their limitations. They're stable enough to do calibration of lesser DMMs in tandem with a better one and supply enough current for many small DC breadboard projects. You can even use them to test linear voltage regulator circuits for ripple rejection and transient response. If you really want to be ridiculous, you can charge small batteries with them!
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Precision was what he was asking for though. For basics it's fine. He wants under 1mV accuracy, but even the SDG2122X is spec'd as ±(1%+2mV) for DCV. TBH I've never used it for just DC, and it's pretty cool that the option is there.
Edit: I just checked and the SDG1032X is spec'd at ±(1%+3 mV) for DCV.
bdunham7:
--- Quote from: KungFuJosh on October 16, 2023, 10:34:54 pm ---Precision was what he was asking for though. For basics it's fine. He wants under 1mV accuracy, but even the SDG2122X is spec'd as ±(1%+2mV) for DCV.
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Yes, he either needs an SMU or he needs to have a higher precision meter in parallel--and there still may be stability issues.
Interestingly, the SDG2042X appears to be the most accurate source of DC voltage I have on my bench, and that includes a PD 5020 "Precision DC Source" that sports an LM399 reference.
KungFuJosh:
--- Quote from: bdunham7 on October 17, 2023, 12:21:30 am ---Interestingly, the SDG2042X appears to be the most accurate source of DC voltage I have on my bench, and that includes a PD 5020 "Precision DC Source" that sports an LM399 reference.
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It's probably my most accurate (adjustable) voltage source on my bench too...at least until I finally bite the bullet and build that Elektor project. OTOH, I don't know if I should trust it, but I have a TP3005P bench PSU that my SDM3055s thinks is accurate. 2VDC shows 1.9999V, 20V shows 20.004V, 30V shows 30.005V, 10mV (lowest possible) shows 9.738mV. That's not too shabby.🤷
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