Auto Find Overlay button in Setup Text/Distance Encoders preferences only works with XBOB 3, XBOB 4 and Rausch DeKom 1214 overlays. All other overlay com ports must be set manually.
Manual Setup: Set Overlay / Encoder RS232 Communication Port dropdown menu to a port number, resume session and see if it establishes communication. If it does not, repeat this process for each available com port until communication is established.
The XBOB 4 is the only overlay that can be calibrated for distance using the Footage Calibration tools in the POSM Preferences Setup Text / Distance Encoders.
Default Video Settings
Edit Preferences/Video and Image Options