Chapter 4: Setting Up the GPS Plotter
4-7
Press the
CURSOR ECHO
soft key to display the cursor transfer soft keys.
The following options can be toggled
ON
or
OFF
:
•
Radar Cursor In:
displays the cursor from another radar on the plot-
ter display or chart window (default -
OFF
).
•
Chart Cursor In:
displays the cursor from another plotter or chart-
plotter (default -
OFF
).
•
SeaTalk Cursor Out:
enables the output, onto SeaTalk, of the dis-
play’s own cursor (default -
OFF
).
Note:
The remote display must have SeaTalk Cursor Out enabled.
If you set the options to
OFF
, no cursor echo information is displayed.
Date and Time Settings
Set your preferred date format (
DD/MM/YY
or
MM/DD/YY
) and time
format (12 or 24 hour). If you wish to display local time, use the soft keys
to change from UTC to the required time offset. This can be up to
±
13
hours, in hourly steps.
GPS Source
The Raynav 305 GPS Plotter includes a built-in GPS receiver. However,
it is possible to use GPS data from another GPS receiver connected via
SeaTalk or NMEA.
This option allows you to specifiy the source of the GPS data.
Select
MASTER
to use the built-in GPS receiver, or
REPEATER
to use
external GPS data. The factory default is
MASTER
.
GPS SOG/COG Filter
Select the SOG/COG filter setting as required. This can be set to
HIGH
,
MEDIUM
or
LOW
. The factory default is
MEDIUM
.
The velocity vectors calculated from the GPS Signal give an
instantaneous measure of speed and direction of the GPS antenna. The
COG and SOG can therefore seem erratic under certain conditions. For
example, when a vessel is moving slowly through rough seas, the antenna
moves from side to side as well as in the direction of the vessel.
The SOG/COG filter averages the velocity vectors to compensate for the
oscillating motion of the vessel, giving a clearer indication of the vessel’s
course and speed.
Slow moving vessels, or vessels sailing in rough seas will benefit from a
high setting, whereas a power boat that can quickly change speed and
direction will benefit from a low setting.
The filter does not affect the calculation of the GPS position.
81171_4.BOOK Page 7 Thursday, November 29, 2001 11:34 AM
Содержание GPS Plotter
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