Hi,
No replies...
Your last post wasn't very informative... for me rather confusing.
The requested infornations are still missing - mostly
The given values sometimes don't relate to the problem (150 dB), or are incomplete ("optic switch driver(it switches 400V at 10kHz" what is this, what current, where do the signals go to?)
Now there seem to be many cases...
Is there no external wiring? Where do the DAC signals go to? Where do the ADC signals come from? Can they induce noise, ir create ground loops, or contain ESD pulses?
A saying is: a picture says more than a lot of words. This is especially true for technical descriptions ... and in a forum with people from all over the world...
It shouldn't be too difficult nowadays to take some photos, or give any value for current...
In short: some objective informations we can validate and discuss about.
Mind: You don't need to do this for us, you do it for yourself.
Klaus