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5. CUSTOMIZING YOUR UNIT
5-23
Contents of GPS setup menu (con’t from previous page)
Item Description Settings Default Setting
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 0 seconds (no
position smoothing)
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
5 seconds
GPS
Speed
Averaging
Calculation of ETA is based on average ship’s
speed over a given period. If the period is too
long or too short, calculation error will result.
Change this setting if calculation error occurs.
The default setting is suitable for most conditions.
0-999 seconds 60 seconds
Latitude,
Longitude
Offset
Offsets latitude position to further refine position
accuracy.
0.001’S –
9.999’N
0.001’E –
9.999’W
0.0’ (no offset)
(Con’t on next page)