7. CUSTOMIZING YOUR UNIT
7-25
Contents of GPS setup menu (con’t on previous page)
Item Description Settings
Position Smoothing
When the DOP or receiving condition is
unfavorable, the GPS fix may change
greatly, even if the vessel is not moving.
This change can be reduced by smoothing
the raw GPS fixes. A setting between 000
to 999 is available. The higher the setting
the more smoothed the raw data. If the
setting is too high, the response time
required to show a change of latitude and
longitude will be too long. This is
especially noticeable if the vessel is
moving fast. Increase the setting if the
GPS fix changes randomly.
0-999 seconds
Spd/Cse Smoothing During position fixing, ship’s velocity
(speed and course) is directly measured
by receiving GPS satellite signals. The raw
velocity data may vary too much
depending on receiving conditions and
other factors. You can reduce this random
variance by increasing the smoothing. The
higher the smoothing setting, the more the
raw data will be averaged. If this setting is
high, the response to speed and course
changes will slow. For no smoothing, enter
all zeroes.
0-999 seconds
Latitude, Longitude
Offset
Offsets latitude position to further refine
position accuracy.
0.001’S – 9.999’S
0.000’N – 9.999’N
0.001’E – 9.999’E
0.000’W – 9.999’W
(Con’t on next page)
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