You mentioned that you have five audio channels. Are you trying to output five discreet channels to the DSR-1500? The embedded SDI for that deck allows only four channels as far as I know.
Also, check your track output settings in the timeline. It’s a bit obtuse, but you need to right click on the track selector to see what track it’s patched to. If you’re trying to output four discreet channels to the deck you’ll need to set up a multi track output in the sequence settings. If you’re going for simple stereo just make sure that tracks are assigned properly in the timeline.
The Avid makes all this a bit simpler with it’s Audio Mix window where you assign tracks to their output channels. It’s all in one place on the Avid. In FCP it’s literally spread across three different windows (timeline, sequence setting, Edit To Tape).
Michael Alberts
Ambidextrous Productions, Inc.