Raymarine L1250D, Owner'S Handbook Manual

Page: 90 / 246

4-12 HD Series Fishfinders
Da
te
a
nd
T
im
e
Se
ttin
gs
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 desired time offset. This can be up to plus or minus 12
hours, in hourly steps.
GPS SOG/COG Filter
Note: This option only applies to systems with a GPS connected.
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. The filter does not affect the calculation of the GPS position.
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.
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.
Select the SOG/COG filter setting as desired. This can be set to
HIGH
,
MEDIUM
or
LOW
.
Compass Set Up
Note: This option only applies to systems with a Raymarine heading sensor
connected.
This option is used to calibrate a Raymarine heading sensor such as the
Pathfinder Smart Heading System. Controls are provided for
LINEARISE
COMPASS
which detects and corrects for heading errors caused by metal
objects, and
ALIGN HEADING
which matches the displayed heading to a known
heading or transit.
Refer to the Handbook supplied with your heading sensor for more details.
Language
Select the language in which you wish information to be displayed. The
selected language will be used for screen text, labels, menus and options, but
will not affect the letters displayed by the context-sensitive cursor. The
language setting also affects the display format for lat/long position
information.
81213_1.book Page 12 Monday, March 17, 2003 1:14 PM