Garmin GTN 725 Pilot's Manual page 505

Message
GPS RECEIVER -
Low internal clock
battery.
GPS RECEIVER -
GPS receiver needs
service.
GPS SEARCHING
SKY -
Ensure GPS
antenna has an
unobstructed view
of the sky.
GTN -
GTN needs service.
HTAWS -
Invalid Terrain
Database.
INTERFACE
ADAPTER -
GAD 42
configuration
needs service.
190-01007-03 Rev. D
Description
The GPS module
indicates that its clock
battery is low. Almanac
data may have been
lost. The unit will
function normally, but
may take a longer
than normal period to
acquire a GPS position.
The GPS module
is reporting that it
needs service. The GPS
module may continue
to function.
The GPS module is
acquiring position and
may take longer than
normal. This message
normally occurs after
initial installation or if
the unit has not been
powered for several
weeks.
The GTN has lost
calibration data that
was set by Garmin
during manufacturing.
The terrain database is
of insufficient resolution
for use with HTAWS.
GAD 42 indicates a
configuration error.
Garmin GTN 725/750 Pilot's Guide
Action
Contact dealer for service.
Use a different GPS receiver
or a non-GPS based source of
navigation. Contact dealer for
service.
No action is necessary; message is
informational only.
Contact dealer for service.
Load HTAWS specific terrain
database on the external SD card.
Verify all input/output data from/
to the GAD 42 Interface Adapter.
Contact dealer for service.
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Charts
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
17-13
Index