i have recently aquired a dolby dm100. When I take the input "F" connector from my big dish, connect it to a BNC adapter and plug it in to the dm100, I do not get a signal. If I take the toslink output from the HTPC and insert it into the dm100, I get pcm signal. If the broadcast is sending dolby e, no signal is registered on the dm100. I'm thinking perhaps I need the raw audio signal that's part of the input cable but I don't know how to separate the video from the audio. Any help for a novice would be appreciated.