Furuno 1712 Manual De Usuario

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11 
2) Heading alignment 
You have mounted the antenna unit facing 
straight ahead in the direction of the bow. 
Therefore, a small but conspicuous target dead 
ahead visually should appear on the heading 
mark (zero degrees). 
In practice, you will probably observe some 
small error on the display because of the 
difficulty in achieving accurate initial positioning 
of the antenna unit. The following adjustment 
will compensate for this error, up to ±30 
degrees. 
1.  Identify a suitable target (for example, ship 
or buoy) at a range between 0.125 to 0.25 
miles, preferably near the heading mark. 
To minimize error, keep echoes in the 
outer half of the picture by changing the 
range. 
2.  Press and hold down and  together 
(about 10 seconds) to display the 
installation menu. 
SEL MENU
BY 
/
 KEY
 
TOTAL ON TIME
     00000 : 00
TOTAL TX TIME
     00000 : 00
ADJUST PICTURE ORIENTATION
USING         KEYS SO THAT 
HEADING MARK BISECTS TARGET
LOCATED DEAD AHEAD.
TUNE
Total hours radar
has been on
Total hours radar
has been trans-
mitted
Tuning bar
(for technicians)
Instructions for item selected appear here.
(example: heading adjustment)
Menu
1. 
ADJ HDG
2. ADJ TMG
  ▲
/
3. 
NM
 /KM
 
Figure 21 Installation menu 
3.  Select ADJ HDG. Your display should now 
look something like the one shown in 
Figure 22. 
3. 
NM
 /KM
 
 30
°
 
 30
°
 
SEL MENU
BY 
/
 KEY
TOTAL ON TIME
     00000 : 00
TOTAL TX TIME
     00000 : 00
ADJUST PICTURE ORIENTATION
USING 
KEYS SO THAT
HEADING MARK BISECTS TARGET
LOCATED DEAD AHEAD.
1. 
ADJ HDG
2. ADJ TMG
TUNE
0.25
NM
.125
  ▲
/
3. 
NM 
/KM
 
Figure 22 Display for adjustment of heading 
4. Press 
or to bisect the target selected 
at step 1 with the dot-dash-line. 
5. Press 
MENU. 
0.25
.125
NM
 
NM
9.4
0.015
Target
Heading
marker
 
Figure 23 How to adjust heading 
6.  As a final test, move the boat towards a 
small buoy and confirm that the buoy 
shows up dead ahead on the radar when it 
is visually dead ahead.