Furuno 1734C Service Manual

7. CUSTOMIZING YOUR UNIT 

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’N 
0.001’E – 9.999’W 
 

 

 

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