accessed by placing the cursor over the
individual position sensor and pressing the
ENTER key. Use the NAV, PRV, or NXT key
to page through the sensor status pages.
When all of the sensor status pages have
been reviewed, Navigation 1/4 page will
again be displayed.
f. GPS Subsection Pages.
(1) GPS Subsection 1/3 Page. Refer to
(a) POS. The POS (position) fields
display the current composite latitude and longitude in
degrees, minutes, and hundredths of a minute.
(b) GPS. The GPS (global positioning
system) fields display current GPS latitude and
longitude in degrees, minutes, and hundredths of a
minute. GPS position is only displayed when GPS is
in the NAV mode.
(c) DIF. The DIF (difference) between
the composite position and the sensor computed
latitude and longitude in degrees.
Figure 3A-30. GPS Subsection 1/3 Page
(2) GPS Subsection 2/3 Page. Refer to
(horizontal position error) field displays horizontal
position error in nautical miles.
(b) GPS TIME. The GPS TIME field
displays GPS GMT in hours, minutes, and seconds.
This time is displayed when at least one satellite is
being tracked, otherwise the time field displays
Figure 3A-31. GPS Subsection 2/3 Page
GPS TIME may vary by several seconds
from GMT due to leap second input of UTC
(coordinated universal time).
(c) STATE. This field displays the GPS
1 Dashes GPS receiver is idle or
no mode data is available.
2 INITIALIZE The GPS receiver is
updated with initial position and time information.
3 SKY SEARCH No almanac
available. The GPS system is searching for any
satellite in the visible table based on the internal or
external time, data, and position and will assign
channels in the order received.
selection, channel assignments, and carrier and code
lock are in progress.
5 TRANSITION The GPS receiver
is transitioning from one state to another.
6 NAVIGATION GPS receiver is in
navigation mode and has at least a two-dimensional
7 DR The GPS system is in the
Dead Reckoning (DR) mode. When GPS position is
unavailable, the GPS receiver will continue to output