ebay goodness (funct. generator from the 80's)

another victory on ebay. it was museum quality, as mint as I could imagine from this era. it weighs a ton and is so full of metal, it rivals the HP funct generator that I also recently bought.

 

the only thing wrong with this one was that the top 'a' segment of the leds were intermittant. 2 hours of troubleshooting led me to the cause: the one controller chip inside was in a very cheap IC socket and some pins were not making good contact (after all these decades). I could not get the socket to spring back BUT there was enough clearance inside to let me stack another machine-pin socket on top of the cheap one. this mated well with both the chip and the old socket. problem solved!

 

the display is a bit of fun; I was playing with the AM modulation and the scop triggering and I could get the display to show some of the amplitude modulated waves, in an interesting super-imposed way.

 

also, the SIZE of that function generator! its about the same width AND depth as the scope! what a monster ;)

 

Done