Furuno USA Inc 9ZWRTR075 用户手册

5. 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 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)