TM 1-1510-225-10
3B-143
Figure 3B-114. GPS Integrated Navigation Page
Table 3B-77. GPS Integrated Navigation Page
NO.
DESCRIPTION/FUNCTION
1
Indicates present GPS position.
2
95% probably position error.
3
Selects GPS RAIM page.
4
Indicates the current RAIM Status.
5
Difference from designated pilot’s source.
6
Number of GPS satellites tracked.
7
The GPS receiver state.
8
The current GPS tracking/aiding mode.
The MODE indicates the current GPS receiver
tracking/aiding mode of INIT, TEST, or NAV/PVA.
The STATE indicates the lowest tracking state of
the four primary satellite tracking channels: STATE 1
is acquisition, STATE 3 is code track only (in
jamming), and STATE 5 is code and carrier lock (no
jamming).
The number of satellites being tracked for
primary navigational purposes is displayed. Normally
four satellites are tracked to provide a fully determined
position (a four dimensional position requires four
satellites). Less than four may result in GPS data
being invalid.
(b) GPS Satellite Data. The FMS-800
provides the crew access to the page displaying the
individual channel/satellite tracking status for the GPS
receiver. Selecting the SATS line select key on the
GPS INAV page will access this page. Refer to Figure
3B-115 and Table 3B -78.
The possible state displays are as follows:
1, 2
S
Search
4, 6
T
Tracked
3
I
Interference
5
D
Tracked with data
7
R
Recovery
Figure 3B-115. GPS Satellite Data
Table 3B-78. GPS Satellite Data
NO.
DESCRIPTION/FUNCTION
1
Pressing line select key SATS will access
the channel/satellite tracking status page.
2
Indicates satellite vehicles in track or
search.
3
Indicates the carrier to noise ratio of
satellite signal.
4
Indicates
tracking
state
of
satellite
channel.
5
The frequency and code in track.
The
GPS
satellite
data
page
provides
information regarding the current tracking state of each
GPS receiver channel. This page also provides
information on which satellite is currently being
tracked, current carrier to noise ratio for the incoming
