Raymarine Marine GPS System - Manual (Page 108)

Advanced Navigator Functions
5-17
If you turn the RAIN or FTC control Off (equivalent to setting the
level to 0%), the actual setting is stored, and restored when you turn
the control on again. Keep in mind however, that RAIN and FTC are
reset to Off at power-on.
To adjust the RAIN and FTC controls:
1. Select a range appropriate to the adjustment you want to
make.
2. From the Pathfinder Panel, click the GAIN button.
The Gain buttons are displayed.
or
Click the right mouse button and select
View/Control
Panel . The Control Panel appears.
3. Click the RAIN and FTC buttons. The buttons toggle
between ON and OFF.
4. If you select ON , the arrow control keys appear. Use the
up/down arrows to increase/decrease the RAIN and FTC
settings.
5. When you have set the controls to the levels you require,
click ENTER , CLEAR , or BACK to return to the default
menu level of the Functionbar.