Instruction Manual
22
SECTION
1
NAV KEY
Receiver Status &
Satellite Data
Viewing individual satellite information.
Poor Cvrge- The GNC 300XL cannot acquire sufficient satellites for navi-
gation.
Need Alt - The GNC 300XL needs altitude in order to start/continue
navigation. Press
N
to display the position page and enter
the altitude.
Not Usable - The GNC 300XL is unusable due to incorrect initialization or
abnormal satellite conditions. Turn the unit off and on again.
Autolocate - The GNC 300XL is looking for any satellite whose almanac
has been collected. This process can take up to five minutes.
The third and fourth lines of the satellite status page provide the satellite number
and signal strength of each satellite in view. The satellite status page shows signal
strength for up to eight satellites at a time. If additional satellites are being received
an arrow on the ‘sat’ line will indicate additional data is available.
To view additional satellites:
1. Rotate
K
to view more satellites.
Additional information regarding each satellite’s azimuth, elevation and other data
is also available.
To view individual satellite information:
1. Press
N
and use
O
to display the satellite status page.
2. Press
C
twice to activate the cursor in the GPS window.
3. Use
O
to highlight the satellite number you wish to view and press
E
. This will dis-
play the satellite data page, showing the selected satellite’s number, elevation angle, rise
or fall indication, User Range Accuracy (URA, or the range measurement accuracy as
determined by the satellite), azimuth and signal strength.
4. Rotate
K
to view information for the next satellite.
5. Rotate
O
and press
C
on the satellite status page when you are finished.
‘Searching the Sky’ for satellites. No satellite
almanac data exists in the GNC 300XL. It must
be recollected from the first available satellite.
300xl manual 1/25/99 2:35 PM Page 22