Operation Manual

8120 Installation and Operation Manual87
Appendix C Glossary and navigation data
Air temp - Air temperature (requires Navman
7200 VHF radio).
Alarm status - Shows the symbol (see
section 17-8) for each alarm that is on. The
symbol is normally black and turns red if the
alarm triggers.
Attention Area - An important area on a
chart, such as a restricted anchorage or a
shallow area (see section 17-2).
Bathymetric line - A depth contour line on
the chart.
Chart card - A plug-in card that stores chart
data for a region (see section 1-3).
C-MAP™ chart card - See Chart card.
C-MAP™ user card - See User card.
Cursor - A symbol on the display (see
section 3-2).
DGPS - Differential Global Positioning
System. A navigation tool based on GPS with
some errors corrected (see section 7).
DTN - Distance to the next position the 8120
is navigating to, either a waypoint or the
cursor.
Fish forecaster - An estimate of the
likelihood of catching fish based on
barometric pressure. The more fishes that
show the higher the likelihood (requires
Navman 7200 VHF radio).
Gear - The gear the engine is in (requires
SmartCraft).
Goto - A simple way of navigating straight
to a waypoint or to the cursor position (see
section 3-1).
GPS - Global Positioning System. A satellite-
based navigation tool (see section 7).
Leg - The straight segments of a route
between waypoints. A route with four
waypoints has three legs.
MOB - Man overboard.
MOB function - Starts navigating back to
the place where someone fell overboard (see
section 2-4).
NavBus - A way of connecting NAVMAN
instruments together to share data (see
section 18-11).
NMEA - National Marine Electronics
Association.
NMEA 0183 - A standard for interfacing
marine electronic devices (see section 18-12).
Route: Two or more waypoints linked in
sequence to form a course for the boat (see
section 6).
Sonar status - A summary of sonar settings.
TTN - Time to the next position the 8120 is
navigating to, either a waypoint or the cursor.
User card - A plug-in card that stores
waypoints, routes and tracks (see section 1-2).
UTC - Universal Time Coordinated or
Coordinated Universal Time, which is
a standard world time, formerly called
Greenwich Mean Time (GMT).
Waypoint - A position that you can set on the
Instrument chart, for example a fishing spot
or a point on a route (see section 5).
Weather - An estimate of the weather based
on barometric pressure (requires Navman
7200 VHF radio).