Advanced Optics

Now the KLM-366 is on the bench.

Stefan Hübner has some good info on the opto coupler in the Polysix' Antilog circuit. And thanks to his article i am able to almost be sure that the scale issue is caused by an error in the Antilog circuitry. I measured -13V at pin 7 of IC 18, indicating that something is not working as expected here.