Furuno FCR-2107-D Manual De Usuario

15. Navigation Sensors 

The system has three different positions for own ship: System position, primary position and secondary position: 

•  System position: Used for navigation and steering. See section 15.2 Source of Position. 
•  Primary position: Position generated by position source chosen as primary position source.  
•  Secondary position: Position generated by position source chosen as secondary position source. 
The position source for primary position of own ship is chosen either as Primary or as Pri no alert on the Position 
page of the Sensors dialog box. 

The position source for secondary position of own ship is chosen either as Secondary or as Sec no alert on the 
Position page of the Sensors dialog box. Secondary position of own ship is not available as latitude/longitude value 
for the user. 

GPS in diff. mode

or SYLEDIS

selected as

 SECONDARY

Any other than

GPS in diff. mode

or SYLEDIS

selected as

 SECONDARY

Secondary

position

of the

own ship

used by

the system

Selected and position exists

Secondary position

of own ship is

 

is not valid

Selected and
position exists

Not selected
or no position

Not selected
or no position

 

System, primary and secondary positions of the own 
ship may be plotted on the chart radar display with the 
Past tracks feature. You can control their visibility from 
the Tracking page of the Symbol Display dialog box, 
shown right. In this example, past tracks are plotted 
using your ship's system position. 

 

 

 

You can activate the alert "407 Position discrepancy" 
from the Initial Settings dialog box. The alert is active 
between primary position and any secondary positions. 
Note that the alert is also effective between own ship 
position and any positions, since chart radar compass 
position discrepancy between position used by system 
(own ship position) and any individual position sensor 
selected as primary or secondary source of position. To 
deactivate the alert set limit as 0.00.