Page 152 951/952 Operator’s Manual Rev. B
Chapter 11 - Customizing the Unit
To change any of the options (as described below), select it by
pressing the to move the arrow at the left of the
screen, then press the menu key. The selected option
begins to flash, waiting for you to change it using the
or the .
Choosing a
navigation source
The unit’s position displays and waypoint navigation are based
on position information obtained from any one of four avail-
able navigation data sources:
• GPS (GPS can be selected as the navigation source at any
time.)
• PHANTOM LRN (Phantom Loran coordinates are calcu-
lated from GPS coordinates. PHANTOM LRN can be used if
no loran receiver is interfaced to the system, but you’d
still like to see your position mathematically converted to,
and displayed in, loran TD coordinates.)
• EXTERNAL LRN!An external loran receiver can be used if
a loran receiver is interfaced to the unit (and is opera-
tional.)
• DEMO mode (DEMO mode is used to simulate a stationary
position—namely, the unit’s last position fix—if you want
to practice using the unit without being on your boat or
having an antenna connected. You can enter a new way-
point with the name ‘DEMO’—including the single quota-
tion marks—to establish a demo position at that
waypoint’s coordinates. The act of entering the DEMO
waypoint establishes the demo position; simply leaving a
DEMO waypoint stored in memory, or renaming an exist-
ing waypoint as ‘DEMO’, doesn’t affect the demo position.)
To enter demo mode, at the CHART screen press the
to move to the simulated position to
which you want to go. Press the key,
then press the key. Press the
key to go to the WAYPTS CHART screen, then press the
key. Use the to enter the name
“demo” in the name field, then press the key. At
the CHART screen, press the waypt key.
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