Yamaha DTXpress/DTXplorer/DTXtreme

I have a couple of questions about the PCY10.  First off, where does 
it connect to?  Does it take up an input source?  I'll have to use 
input 9/10 I assume?  Second, where does it get the bell sounds 
from?  Are the bell sounds already available on the module?  Do the 
bell sounds change when you switch ride cymbals?  Thanks for 
clearing up the confusion!