Hi Montegoman,

your system must be a lot newer than mine - software came on 5¼ inch floppies. Nee supplied the parallel lead so no idea of the connections. The security device is still functioning fine. Although I now operate with a 486 machine it boots into dos to run the software, if I want to run windows I have to run that as a separate program but only do that to clean up the stored program directory as it's difficult to keep on top of the programs just using the dos 8.3 character names.

Lektronix apparently can repair nee controllers, probably worth a call. https://www.lektronix.com/equipment/...cs-smcu/119853

Ken.