How To Adjust The Heading - Furuno FSV-85 Installation Manual

3.8

How to Adjust the Heading

Heading correction at the hull unit
When the BOW mark on the flange of the hull unit cannot be directed toward ship's
bow, adjust the heading so an echo which is dead ahead appears dead ahead on the
display.
1. Enable transmission as shown in section 3.2.
2. Find a target in the bow direction (buoy, for example) and display it on a near
range perfectly. If the target appears at 12 o'clock the heading alignment is cor-
rect. If it does not, measure the error and go to next step.
Buoy
3. If the heading is skewed, measure the skew angle.
4. Access the System menu, referring to .
5. Select [Others] from the System menu items, then push the left-click button.
6. Select [Heading Adjust 1] then left-click.
7. Rotate the scrollwheel to enter the angle measured at step 3. The setting range is
-180° to 179°, in one-degree increments.
8. Select [Quit] then push the left-click button.
9. Select Quit on the topmost menu then push the left-click button.
Heading correction at the motion sensor
Heading correction at the motion sensor is done with [Heading Adjust 2] on the [Oth-
ers] menu.
• If the control box is mounted on the hull unit, set the same heading correction as
entered for [Heading Adjust 1] (in [Others] menu).
• If the control box is mounted independent of the hull unit, set the angle measured
from the bow in the clockwise direction. The angle is 0° degrees if the lid of the con-
trol box is directed toward ship's stern precisely.
• If the motion sensor is a GPS gyro, set 0°.
3. ADJUSTMENTS AND CHECKS
If target's on-screen
position is right of ship's
bow, for example, heading
is skewed left.
3-7