Furuno COLOR VIDEO PLOTTER 1833C Operator's Manual page 194

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