I'm looking at one of these CuBr lasers tomorrow afternoon, that should be operational. Power will be available to turn it on, but I have no experience with them and there's no manual. Does anyone here have experience with them? I'm looking for a basic turn-on and turn-off procedure to verify it lases. Otherwise, I'll do my best with menu interpretation and navigation. There's a video of one running on Youtube I've seen, and it helps. Thanks!