Is it possible that since you calibrated with the wrong current value, the device now isn't able to rollback from that calibration? Like, for example, you exceeded a calib range (offset)... from which the software doesn't have a value to recover.
(For example, the device is able to recover from up to 100 mA offset, but not the 100 mA value itself.)
And now, probably only Siglent or a full flash would be able to reset the device.
This is likely, in my rush to get these supplies converted and calibrated, I calibrated the way I thought it should work after glancing over the manual rather than read the manual over and over to be absolutely sure I calibrated they way Siglent specified. Thanks to 2N3055 for pointing this out!!
What is interesting is the current reading is spot on from a couple ma all the way to 3A, but the darn CC offset remains!! I'm debating whether to give the one scheduled to arrive today a try, if I do, will certainly follow the cal manual procedure correctly before I attempt an enhancement, and if it behaves the same with a CC offset, then this points to a serious bug if it's not easily recoverable!!
A nice thing about the 3303X or X-E is not only the use of 24 bit delta sigma ADC and DAC (believe this is correct), but the internal reference seems to be very stable, and the 3rd output is completely isolated, not common to ch1 or ch2. If one were designing for a low cost, then the 3rd channel would be common to either ch1 or 2, which saves a few components (rectifier bridge, filter caps) and an extra transformer winding. So even tho it's not completely settable, being a floating output is nice!!
I'm burnt to crisp now stresswise, so may wait on the attempt when the unit arrivers later today!!
The worldwide shortage of semiconductors is wreaking havoc on the design process, I've had to redesign things over and over as components become available then disappear, so now if we just think a component might be useful we buy a bunch and just store them. Did so with some expensive DACs and HV amps, over $3K in just two part types!! But they are here in my hands
Hand soldering the DAC 100 pin 0.5mm pitch package was difficult, tedious, but worked. Got one DAC up and have 4 channels of the 64 running, beautiful, clean and precise HV waveforms, now I need to get the other 60 channels of this stuff done before my eye goes south.
Hey, and thanks so much for all the help you, blurpy, 2N3055 and tautech have provided. You guys are great and really appreciated
Best,