Hi Russ,
While the baro itself works on atmospheric pressure (to compare ‘like for like’ with transponders), the PAW software needs a positive GPS fix for altitude comparison, so won’t show a ‘Green’ in the Baro Status until the GPS Fix has also gone green.
p.s. I’m a bit concerned that the GPS Status is reporting ‘Unavailable’ - is the dongle missing? If not, you need to set it up outdoors in the clear until it gets a proper fix.
Are you also aware of the new VSO switch, which restricts PAW Tx below a 10Km threshold speed (to minimise alerts from aircraft on the ground)? If not see the Config instructions in the Knowledge Base on the pilotaware.com site.
Best Regards
Peter