Lowrance electronic 500 - Manual (Page 25)

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Alarms command: turns arrival, off course and anchor GPS alarms on
or off and changes alarm thresholds.
Aviation Alarms command: turns distance, time, near and inside air-
space alarms on or off and changes alarm thresholds.
Route Planning command: used to plan, view or navigate a route.
My Trails command: shows, hides, creates and deletes plot trails. Also
used to navigate or backtrack a trail.
Cancel Navigation command: turns off the various navigation com-
mands. Used to stop navigating after you have reached your destina-
tion navaid, waypoint, Point of Interest or map cursor location; or after
you reach the end of a route or trail.
GPS Setup command: sets various GPS receiver options and runs the
GPS Simulator.
System Setup command: sets general configuration options.
Utilities command: controls several aeronautical calculators and other
time-related utilities. These include: E6B flight computer functions (true
air speed, wind speed, etc.); sun/moon rise calculator; trip status and sta-
tistics, alarm clock, up timer and down timer.
Browse MMC Files command: this allows you to view the installed MMC
card and the files it contains.
Pages
Aviation Mode has five Page displays that represent the five major op-
erating modes. They are the Satellite Status Page, the Position Page,
the HSI Navigation Page, the Map Page and the Airport Orientation
Page. They are accessed by pressing the
PAGES key. Pressing PAGES
repeatedly scrolls among the five screens in an endless circular loop.
Each Page has a submenu screen associated with it. You access a Page
Submenu by pressing the
MENU key one time while the page is dis-
played. (Pressing the MENU key twice takes you to the Main Menu.)
Satellite Status Page
This Page, shown in the following image, provides detailed information
on the status of AirMap's satellite lock-on and position acquisition. To
get to the Satellite Status Page: press
PAGES repeatedly until the page
you want appears.
No matter what page you are on, a flashing current position indica-
tor/question mark symbol and flashing GPS data displays indicate that
satellite lock has been lost and there is no position confirmed. This page
shows you the quality and accuracy of the current satellite lock-on and
position calculation.