Now that I am retired, I can pull out my 20 year old Coronado SMN35. It's in a few pieces, because back then I had trouble with the throughput and filters, and I was also doing some experimenting looking for a way to speed up temperature stabilization (manual etalon tilt). The SMN35 was powered by 12V, but I cannot remember for the life of me if there was a special controller associated with it, something that would allow less than 12 volts to be applied. I don't believe there was any type of external active temperature control, if anything, it was built in. Being an early adopter at the time, I have one of the early serial numbers, one of the first handful produced.
Does anyone out there have one of the older models? Can anyone help with the external power control? Was it just a 12V cable? Any help anyone can provide in explanation, pictures, etc.. would be most appreciated.
Edited by bob11746, 06 June 2020 - 01:00 PM.