Gps Status Screens; Screen 3: Gps Status Screen - Honeywell KMD-150 Pilot's Manual

GPS STATUS SCREENS

This Screen is only
accessible if Internal
GPS source is selected
and is accessed by
pressing Key 1,GPS
STATUS, in Main Menu.
The GPS Status Screen
will display the receiver
STATUS. This can be
any of the following:
BAD ALMANAC
2D FIX
The meanings of these displays are:
BAD ALMANAC means the GPS receiver's information concerning
satellite positions is out of date. If this occurs the unit should be left
alone with the antenna connected and in view of the sky for approxi-
mately 15 minutes during which period it will automatically lock onto a
satellite and load an up-to-date almanac.
<3 SATS means that according to the current information available,
there are less than three satellites in view and a fix can not be calculated.
This message is very rarely displayed.
DIFFERENTIAL This word will be displayed in conjunction with 2D FIX
or 3D FIX and means that the KMD 150 has a fix and is also receiving
differential correction signals from an external source. (Refer to
Appendix 4 for further details concerning differential operation.)
ACQUIRING means the unit is currently searching for satellites or is
loading information from one or more satellites.
2D FIX means the unit is calculating position in two dimensions (i.e. lati-
tude and longitude only, with no height information).
3D FIX means that the unit is calculating position in three dimensions
and can give latitude, longitude and height information.
POOR DOP means that the unit is unable to calculate position owing to
the poor geometry of the visible satellites. (DOP stands for Dilution of
Precision.)
Rev 1 Mar/2000

Screen 3: GPS Status Screen

<3 SATS DIFFERENTIAL
3D FIX POOR DOP
37
GPS Status Screens
ACQUIRING
POS PROP
KMD 150 Pilot's Guide