OK, a question to those of you using another clock source other than Digi. I just got the Lucid clock and it seems to be working fine, but a friend came over the other day and said that I still need oto have a USD in order to have the clocks talk to PT. Is this accurate? My understanding is that I can hook up the Lucid and that's it and not have to have another link to PT. Unfortunately the Lucid documentation is sparse, at best. Any insight you can give me would be great.