Garmin GNS 530 - Manual (Page 18)

GNS 530(A) Pilot’s Guide and Reference 190-00181-00 Rev. H 1-8
SECTION 1
INTRODUCTION
Satellite Status Page
The Satellite Status Page (Figure 1-10) appears as the
GNS 530 attempts to collect satellite information.
When an ‘Acquiring’ status is displayed on the Satellite
Status Page, the signal strengths of any satellites received
appear as ‘bar graph’ readings. This is a good indication
that the unit is receiving signals and a position fix is being
determined. Following the first-time use of the GNS 530,
the time required for a position fix varies, usually from
one to two minutes.
Figure 1-10 Satellite Status Page
If the unit can only obtain enough satellites for 2D
navigation (no altitude), the unit uses the altitude provided
by the altitude encoder (if one is connected).
The ‘INTEG’ annunciator (bottom left corner of the
screen) indicates that satellite coverage is insufficient to
pass built-in integrity monitoring tests. In the example
above, not enough satellites are being received to determine
a position. The Satellite Status Page shows the ID numbers
for the satellites and the relative signal strength of each
satellite received (as a bar graph reading).
‘Searching Sky’ indicates that satellite almanac data
is not available or has expired (if the unit hasn’t been
used for six months or more). This means the unit is
acquiring satellite data to establish almanac and satellite
orbit information, which can take five to ten minutes.
The data is recollected from the first available satellite.
The Satellite Status Page displays a ‘Search Sky’ status, and
the message annunciator (MSG), above the MSG Key also
flashes to alert the pilot of system message, ‘Searching the
Sky’.
Viewing a system message:
Press the MSG Key (Figure 1-11).
The Message Page appears and displays the status or
warning information applicable to the receiver’s current
operating condition.
Figure 1-11 Message Page
Returning to the previous page after
viewing a message:
Press the MSG Key again.
NOTE: The GNS 530 utilizes certain software
algorithms to ensure reliable GPS receiver
operation. Receiver Autonomous Integrity
Monitoring (RAIM) and Fault Detection and
Exclusion (FDE) are two examples. These features
allow navigation during Oceanic/Remote legs of
a flight using the GNS 530. For further details,
please refer to Sections 10.3, 10.4, and 14.