AF install manual for XPNDR-261 mentions connection to only one serial port on PFD, however in "SkyView" manual XPNDR-261 >>MUST<< be wire in parallel to both screens to same numerical port on each screen, effectively using 2 ports.
Am I correct to assume I need to connect ONLY to one port on PFD for the AF set-up? Also, my system does have network hub etc.