Aspen Avionics Evolution EFD1000 VFR PFD - Overvoltage Protection; GPS Failures and RSM Emergency GPS Use

EFD1000 VFR PFD Pilot’s Guide
Page 6-10
091-00028-001 ( ) EFD1000 VFR PFD Pilot’s Guide
Page 6-11
091-00028-001 ( )
CHAPTER 6 EXPANDED EMERGENCY AND ABNORMAL PROCEDURES
6.5.1. Overvoltage Protection
In the event of an overvoltage condition in the aircraft’s electrical system, (greater
than 33 volts) the PFD will automatically switch to its battery power and continue to
operate without any pilot action. Operation from the aircraft electrical system will not
be possible while the overvoltage condition is present. When aircraft power decreases
below 33 volts, pilot action is required to manually switch from the PFD battery power.
Restore Aircraft Power to the PFD
1. Press the MENU Button and rotate the Right Knob to the POWER Settings
page
2. Press the EXT PWR Menu Key
3. Press the MENU Button to exit
6.6. GPS Failures and RSM Emergency GPS Use
Position and ight plan data for the PFD is provided from aircraft panel-mounted GPS
equipment. The PFD may be congured to receive data from one or two external GPS
receivers. In addition, if all aircraft GPS receivers fail, the RSM’s emergency GPS receiver
will provide position data if enabled by the installer.
The Basemap will follow an automatic position reversion scheme to determine which
GPS is used to provide position data to the map. The primary GPS is always the one
selected by the pilot using CDI Navigation Source Select Button. If the selected GPS
fails, the PFD automatically switches to the other aircraft’s GPS (if installed) and will
annunciate GPS# REVERSION, where # represents the GPS source providing the position
data (Figure 6-22).