> Every time I dig through the 5370 schematics, I think to myself > "wouldn't it be nifty to build a replacement plug-in card with a > modern fast CPU to run the instrument", but I try and stop myself > there.
Suppose you start with an FPGA on a PCI card. What sort of front end would you want? What can you build with home/hacker technology? My straw man is something to turn a digital signal out of a comparator into a ramp that gets feed into an A/D clocked on the system's internal clock. The ramp needs to be a little over a cycle wide. Anybody got a circuit to make a linear ramp? Maybe the front half of the standard R/C exponential is good enough. Fixup the non linearities in software. Somebody has mentioned a chip that does all this magic. I forget the number but it's in the archives. I think it's European and maybe a touch pricey but maybe not if it avoids the A/D and friends. -- These are my opinions, not necessarily my employer's. I hate spam. _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts