On Thu, May 14, 2009 at 16:20, Jan Kandziora <j...@gmx.de> wrote: > 75m band, I think? If it is really 75m high, someone should already have done > deep thinking about lightning...
Oh, it's not 75m high... I got the units screwed up going back and forth. I originally said 75 ft, then someone said 25m, and I came back with 75m. Regardless, it's not up, it's out. It'll be about 4m up. > So I don't think the optocouplers in the AAG equipment are for lightning > protection. They are for ground separation -- otherwise there would be a > noise-inducing ground loop between the PC, which *always* connects signal > ground to protective earth (major design flaw) and an auxiliary-powered > sensor outside. As I said, it's not direct lightning I think I can protect myself from this way, but nearby lightning. Also, as you've mentioned now, ground loops. Ug... I knew I was trying to do the right thing, just apparently for the wrong reasons... Rob ------------------------------------------------------------------------------ Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
