Furuno FCR-2807 Manual De Usuario

15. Navigation Sensors 

This radar has the following presentation modes in the radar mode: 

Relative Motion (RM) 
Head-up: Unstabilized 
Head-up TB: Head-up with compass-stabilized bearing scale (True Bearing) where the bearing scale rotates with 
the compass reading. 
Course-up: Compass-stabilized relative to ship’s orientation at the time of selecting course-up. 
North-up: Compass-stabilized with reference to North. 

True Motion (TM)  
North-up: Ground or sea stabilized with compass and speed inputs. 

Push the MODE key consecutively to select radar presentation mode desired. The PRESENTATION MODE box 
shows the current presentation mode.  

1.  Use the trackball to select the PRESENTATION MODE box at the top left corner of the screen. 

2.  Push the left button to select mode desired. 

Loss of gyrocompass signal 
When the compass signal is lost, alert "705: Gyro error" or "706: Gyro error" appears. After timeout, the alert 
"402: No heading available" appears, the presentation mode automatically becomes head-up, and all TT and AIS 
targets are erased. Check the gyro and select the presentation mode with the MODE key or the PRESENTATION 
MODE box.

The head-up mode is a display in which the line connecting own ship and the top of the display indicates own ship’s 
heading. 

The target pips are painted at their measured distances and in their directions relative to own ship’s heading. 

The short line on the bearing scale is the north marker, which indicates heading sensor north. A failure of the 
heading sensor input will cause the heading readout to disappear, and the message "No heading available" or "Gyro 
error" (message in red) appears at the lower right corner of the screen. 

Heading Line

North Marker

When the display is off centered
the heading line appears at 0 degree.

 

Head-up mode