Page Display Definitions
2-29
GNS-XLS Flight Management System
Rev. 3
Sep/96
GPS SUBSECTION PAGES
Accessed through the NAVIGATION 4/4 Page (if AFIS is installed in
the system, access is through the NAVIGATION 4/5 Page) by press-
ing the Line Select Key corresponding to the GPS sensor, then
pressing ENTER.
GPS SUBSECTION 1/3
(Page 1 of 3)
See Figure 2-35.
POS:
The current composite posi-
tion (latitude and longitude)
computed in degrees, min-
utes, and hundredths of min-
utes.
GPS:
The current GPS position. This information is only displayed when
GPS is in the NAV mode.
DIF:
The difference between the composite position and sensor computed
position in degrees, minutes and hundredths.
GPS SUBSECTION 2/3 (Page 2 of 3)
Pressing the NEXT Key will display the second GPS SUBSECTION
Page and the following can be observed. See Figure 2-36.
NOTE: All references to FDE prediction do not apply to 17960-0101
units. FDE prediction is only available in 17960-0102 units.
HPE:
Horizontal Position Error dis-
played in nautical miles as a
measure of GPS accuracy.
POS UNCERT:
Estimated Position
Uncertainty, in nautical miles,
when GPS is in navigation
mode.
POS N 34 38.83
W112 25.08
GPS N 34 38.82
W112 25.10
DIF N 0.01
E 0.02
GPS SUBSECTION 1/3
Figure 2-35
HPE 03.65NM
POS UNCERT 07.30NM
GPS TIME 23:43:55
STATE NAVIGATION
MODE OCEANIC/REMOTE
ALT AIDED? YES
RAIM/FDE YES/YES
SATS TRACKED 8
GPS SUBSECTION 2/3
Figure 2-36
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