Furuno BB FAR28x7 - Manual (Page 42)

1. RADAR OPERATION
1-16
[HDG MENU]
1 HDG SOURCE
AD-10/SERIAL
2 GC-10 SETTING
000.0°
1.10.3 Automatic tuning
Choose automatic tuning following paragraph 1.10.1. The TUNE box shows
TUNE AUTO.
1.10.4 Manual tuning
1. Roll the trackball to choose the RANGE box at top left corner and then push
the left or right button as appropriate to choose the 48-mile range. Push the
left button to lower the range; the right button to raise the range.
2. Choose manual tuning following the procedure in paragraph 1.10.1.
3. Roll the trackball to place the arrow on the tuning bar area in the TUNE box.
4. Roll the wheel to adjust tuning. The best tuning point is where the bar graph
swings maximum. The arrow below the bar graph shows tuning control
position; not the tuning condition.
1.11 Aligning Heading with Gyrocompass
With connection of a gyrocompass, ship's heading is displayed at the right side
of the screen. Upon turning on the radar, align the on-screen GYRO readout with
the gyrocompass reading by following the procedure shown below. Once you
have set the initial heading correctly, resetting is not usually required. However, if
the GYRO readout looks wrong or the gyro alarm sounds, follow the procedure
below. Note that the FURUNO SC-60/120 does not require alignment on the
radar.
1. Roll the trackball to place the arrow in the HDG box at the top right corner of
the screen.
2. Push the right button to open the HDG menu.
HDG menu
3. Roll the wheel downward to choose GC-10 SETTING and then push the
wheel or the left button.
Note: If heading source selected is not suitable change it at 1 HDG
SOURCE to match your heading source.
4. Roll the wheel to set the heading. (For entry through the keyboard use the
numeric keys.)
5. Push the wheel to finish.
6. Push the right button to close the menu.