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2 - NAV PAGES
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190-00357-00 Rev E
Satellite Status Page
TheSatelliteStatusPage(thelastNAVpage)
provides a visual reference of GPS receiver functions,
including current satellite coverage, GPS receiver
status, position accuracy, and displays your present
position (by default, in latitude and longitude) and
altitude. The Satellite Status Page also displays the cur-
rent UTC time at the bottom center of the page. The
altitude field (ALT) is user-selectable to configure the
page to your own preferences and current navigation
needs.
GPS Receiver
Status
Sky View
of satellite
positions
Signal
Strength Bars
Satellite
Numbers
Horizontal Figure
of Merit and Verti-
cal Figure of Merit
Estimated Posi-
tion Uncertainty
Acquiring
Satellite,
not ready
for use
Excluded
Satellite
Satellite
acquired
and used for
position fix
Satellite acquired,
used for position
fix, and has differ-
ential corrections
“INTEG”
Annunciator
(flagged when
position not
valid)
Current Page in NAV
Group
(page position
depends on options;
see 400W/500W
Series Display
Interfaces Pilot's
Guide Addendum)
Current
UTC Time
The Satellite Status Page is helpful in troubleshoot-
ing weak (or missing) signal levels due to poor satellite
coverage or installation problems. You may wish to
refer to this page occasionally to monitor GPS receiver
performance and establish a normal pattern for system
operation. Should problems occur at a later date, you
may find it helpful to have an established baseline
from which to compare.
As the GPS receiver locks onto satellites, a signal
strength bar appears for each satellite in view, with the
appropriate satellite number (01-32, WAAS satel-
lites will have higher numbers) underneath each bar.
The progress of satellite acquisition is shown in three
stages:
•Nosignalstrengthbars—thereceiverislooking
for the satellites indicated.
When the 500W-series unit is first powered
on, an “Acquiring” status appears at the top
of the page and no signal strength bars are
displayed.
• Hollowsignalstrengthbars—thereceiverhas
found the satellite(s) and is collecting data.
• Cross-hatchcyansignalstrengthbars—the
receiver has found the satellite(s) but it has been
excludedbytheFDEprogramasafaultysatellite.
• Solidcyansignalstrengthbars—thereceiverhas
collected the necessary data, but is not using the
satellite in the position solution.
• Solidgreensignalstrengthbars—thereceiver
has collected the necessary data and the satellite is
being used in the position solution.
The“D”characterinsidethebarsindicatesdiffer-
ential corrections (e.g. WAAS) are being used for that
satellite.
The Time and other data may not be displayed
until the unit has acquired enough satellites for a fix.
Satellite Status Page