Simrad GN33, Manual

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GN33 Glossary of terms Appendix A-1
Almanac
– a satellite’s almanac data, is data which determines an approxi-
mate lane for satellites in orbit. The almanac data is used by the GPS receiver
to find and lock onto the satellite signal. GN33 has a built-in basic almanac.
Auto trackpoint shift
– will automatically shift to the next trackpoint in the
track and provide new steering details (Track navigation).
Auto waypoint shift
– will automatically shift to the next waypoint in the
route and provide new steering details (Route navigation).
AVN
– Approximate Velocity Necessary – to arrive at a specific waypoint at a
specific time.
B
earing – is the direction of where to go e.g. towards a specific waypoint.
C
ourse – Course Over Ground, magnetic or true. The direction of which the
vessel is moving.
Color
- if your GN33 is the monochrome version, the color features described
in this manual will appear in black, white, and grey scales.
Configuration
– the configuration functions of the GN33 allow you to adapt
the system more specifically to your needs. You may set Units of measure
(feet, fathoms, meters, etc.), Menu languages, Scroll speed, etc.
dGPS
– differential data is received from built-in DGPS module or an exter-
nal DGPS Receiver.
ETA
- Estimated Time of Arrival - at a specific waypoint if keeping a steady
speed.
Great circle
– the shortest distance between two points on the globe.
Grid
- on chart can be set to AUTO / ON / OFF.
ON = the grid is always visible on the chart display.
OFF = the grid is turned off and will not show on the chart display.
AUTO = the grid will not appear in the ordinary chart display, but will be
there when in overzoom and when “Chart” is turned off in the Chart setup,
which means that there will be no World chart presented and no C-MAP
charts presented – only user-made data such as waypoints, routes, lines and
tracks, etc.
Heading
– the direction of which the vessel is pointing (from ext.compass).