Well, yes - I need an oscilloscope and do not own one. I am sure that my 3 PSUs are working as designed (+5V digital, +5analog and +-15v analog).
+5 analog? What's that for? As far as I could see, the DI/O requires +5V for the digital board and +/- 15V for the analogue circuitry.
I am pretty sure that my digital board is getting all the
right signals, however I have no way to know if it is locking on the input signal. I can try swapping in another digital board (I have two - one vanilla and one with clipped leads - mistake and modified with blackgate caps) to see if it changes things, but so far, no go. One thing that does seem to matter is grounding - do not ground your digital PSU back to the same ground plane as the analog one. However, other than that, I do not know my issue keeping it from being done. I was hoping that Jean-Paul Borde would help me out with some suggestions, but I am stuck at the moment.
Well, keep me posted. I'll let you know how I get on, but it's likely to be months before I get chance as I'm moving jobs/house at the start of March.
Good luck!
R. -- http://robinbowes.com
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