When using Final Cut Pro 3 with the Panasonic AJ-D250 deck, you may experience an issue where RS-232 device control does not work.
Symptom
The deck does not respond to transport commands (play, pause, and so forth) sent from Final Cut Pro. The ETT or Log & Capture window says "No communication" instead of "VTR OK".
Solution
Turn the VTR deck off and back on again. The ETT or Log & Capture window in Final Cut Pro should now say "VTR OK".