There really isn't any configuration files, you just need to start it from the command line. This is the command I use to start it on my server at home, with a ThumbDV. I don't have the PiDV running at the moment, but the start up is similar (just point to the correct device).
At some point I should create a systemd file to-do this automatically and I should also create a pull request for the changes that write out status messages to syslog....
Hope that helps,
sudo /usr/bin/AMBEserver -i /dev/ttyUSB0