I got this flash a while ago for my Canon EOS. It's an older flash (was a great one back in the 1980s) which only knows TTL, not e-TTL2 as my Canon would want. Anyways, setting it to Auto (no-TTL) and the camera to Manual (about 1/125 exposure, F4-5) it works great. It has lots of power available.
I managed to get my hands on the manual..