Video is scanned from the top down so if at the time of the flash the scan is half way down that frame does not 'see, it, the next frame picks it up however.This gives the perceived effect of movement where there is none.A similar faster effect occurs in the horizontal scan direction.Stop motion, (frame by frame) is needed to be sure, that event is just too fast.Does your power supply allow the output to be floating, that is not connected or referenced to mains earth.Lab supplies normally do this but i am not sure about server PSU'sEDITTrying to video with the camera on its side may give more insight.
hmm. interesting. I will try to record again later tonight. I recorded at 60fps, and the blink seems to take about half a second to propogate.
as an afterthought , do you know what your electric utility supply type is ?TN-S ? TN-C ? , something else
My suspicion is that whole blink lasts only a few milliseconds.I suspect that psu is mains grounded.Do you have a mains isolating transformer you can borrow.Big yellow thing often found on building sites.
chamber. Its going to behave like an ad-hoc short wave antenna and pick up who knows what.
Basically you are hoping to run effectively a single unshielded 5V logic circuit spread over 50m up on
I have the transformer plugged into a power conditioner.
I know it's not recommended but if I cut the ground lead off the transformer would that do anything to isolate the ground?