8120
Installation and Operation Manual
87
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).