| Products > Test Equipment |
| How to calibrate Siglent SPD1000X / SPD3303X / SPD3303X-E series power supplies? |
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| sjm:
--- Quote from: tautech on January 19, 2019, 03:46:04 am --- From a later post the Service manual is now available with Cal procedures outlined: http://old.siglentamerica.com/USA_website_2014/Documents/manual/SPD3000X_Service_Manual.pdf --- End quote --- Oh yeah, yesterday I was able to calibrate my (hacked) SPD3303X-E to have almost 1mA/1mV accuracy on all levels of output. I used my bench DMM and now the requested, PSU self-measured and DMM measured voltages and currents are nicely lined up. On some voltages, the PSU is almost comparable to some lower quality voltage references. :P The description of the calibration process in the manual is maybe a bit hard to read and not so logically written at times, but after some thinking and testing it out a few times, yeah it works. It is important to keep the power output enabled while inputting the calibration commands! Thanks a lot! Now I can sleep better! ::) BR, -sjm |
| tautech:
A little something that is endorsed by the factory....SPD3303X/X-E units in series mode in series ! |
| Elasia:
--- Quote from: tautech on July 29, 2020, 07:48:59 am ---A little something that is endorsed by the factory....SPD3303X/X-E units in series mode in series ! --- End quote --- Interesting, what do they say about two units in series but internally in parallel mode? |
| oz2cpu:
i have the same "problem" this one is the best of all my units SET SAY 2.010 OUT SAY 2.012 but in reality there is 2.008 it is not a big deal, right now, but those are the true X version, not a hacked upgrade, I did pay 140 Euro EXTRA pr unit for that extra precision, so i did expect the readouts and setpoints to be a lot more spot on. also they drift 2mV the first hr, they are turned on, that i did not expect either. |
| oz2cpu:
look at the attached spec sheet. the last digit that the X version provide, is just resolution, not accuracy, since it can be up to 10mV off, and still be within spec. so it seem a bit odd, to make and sell a version X, with this extra digit, |
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