BENDIXKing AeroNav 910 Pilot's Manual page 375

To return to flight mode, remove the USB fob and cycle power to
the AeroNav.
TIPS AND TECHNIQUES
Some Elements Simulated in Demo Mode
Some aspects of AeroNav behavior are completely
simulated in demo mode. For example, on models
equipped with a VHF radio, the radios can be
"tuned" in demo mode which will display the entered
frequency and the station identifier but the radio isn't
actually channelized to that entered frequency.
89000039-010
Rev 1 May 2019
AeroNav 900/880 Series Pilot's Guide
General 7-45