GDL-82 with CNX-80

Has anyone used the CNX-80 / GNS 480 as position source for a GDL 82? I've got all greens on the configuration program except for the GPS Position, which is not being received. Harness made by Stark, verified that serial port 3 is configured for ads-b output. Any ideas?

Thanks! Jim

What's your CNX80 software version? You need the latest in order to get ADSB+ output on Serial Port 3.