Operating Instructions and Installation Instructions

ComNav Navigator G2 Installation & Operation Operation
Document PN 29010081 V1.1 - 31 -
• Position – GGA or RMC
• Heading – HDT, HDM, or HDG
• Speed and Course – VTG or RMC
• Rate of Turn - ROT
• Satellite Information – GSA or GSV
Display Pages
There are three pages which can be selected by toggling the DISP button – Graphical, Text
and Position pages. All pages show status information on the Left side of the screen.
The status information indicates the quality of the GPS data display. For example, the lower
the DOP (Dilution of Precision), the better the GPS positional accuracy.
The Graphical Display page shows navigation information including a graphical Compass
Ring display of vessel heading and course over ground.
The heading ball and COG ball are indicators of current heading and COG on the north-up
compass ring. If the vessel is stopped, the COG ball will disappear as there is no course over
ground for a still vessel. If current heading is not available, the heading will also disappear.
The Rate of Turn is displayed in degrees per minutes and shows in the bar at the bottom of
the screen.
An example of Graphical display is given in Figure 15.
Status -
Dilution of
Precision
and Time
Turn Rate
Bar Graph
Heading
(degrees)
True (HDT) or
Magnetic (HDM)
Heading
COG Ball
Course
Over
Ground
(degrees)
Turn
Rate and
Direction
Heading
Ball
Turn
Direction
Indicator
Figure 15 - Graphical Navigation Page Description
The Text Display shows general navigation information as text numbers. Heading and
course over ground are both displayed in a large font text format. An example of Text display
is given in Figure 16.
The Position Page shows navigation information including the GPS position fix. See Figure
17 for an example.
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