GNSS vs. NAV mode?

[EGT]

Hi,

What is the difference between GNSS and NAV mode on the DFC90? It seems either will track GPS or NAV based only upon GPS mode.

I'm using the RXP 750/650 GPS.

[Coop]

GNSS receives GPS steering commands from the GPS, while NAV follows the HSI. GNSS provides better turn behavior on some more complicated procedures.