Raymarine ST70 Instrument, Operating Manual

Page: 52 / 82

44 ST70+ User Reference Manual
Add point
To add a new speed calibration value:
1. At the
Airmar Speed Calibration menu, scroll to
Add point
then press
OK
to display the Add
Point page.
2. Set your boat speed through the water so that
the displayed SOG value is the speed you want
as a calibration speed.
3. Press
OK
to add this to confirm this as a calibra-
tion speed and return to the Speed Calibration
page.
4. Repeat steps 1 to 3 for all speeds appropriate to your vessel.
Delete point
To delete a speed calibration value:
1. At the
Airmar Speed Calibration menu, scroll to Delete point then press
OK
to dis-
play the Delete Point page.
2. Scroll to display the speed value you want to delete.
3. Press
OK
to delete this value and return to the Speed Calibration page.
4. Repeat steps 1 to 3 for all speeds you want to delete.
Return to normal operation
When you have completed all the appropriate dockside setup and seatrial calibration
procedures, return to normal operation as follows:
1. With the Transducers found menu displayed, press
CANCEL
to select the Search
Results screen.
2. Press
CANCEL
to select the Transducer Setup screen showing the search
initiation message.
3. Press
CANCEL
to select the Advanced options menu.
4. Press
CANCEL
to select the Main Menu .
5. Press
CANCEL
to return to normal operation.
2.5 Checking autopilot operation
General
After completing calibration, check the basic autopilot operation, as follows:
1. Steer onto a compass heading and hold a steady course at normal cruising speed.
If necessary, steer the boat manually for a short time to check how the boat steers.
2. Ensure it is safe to engage the autopilot, then at a convenient Pilot Controller key-
pad press
AUTO
to lock onto the current heading. The autopilot should hold a con-
stant heading in calm sea conditions.
3. Use
-1, +1, -10
and
+10
or the Rotary Control, to see how the SmartPilot alters the
course to port and starboard.
4. Press
STANDBY
to return to manual steering.
i
Press OK to accept
Add Point
24 kts
Now set the boat speed to SOG. Press
OK to match current boat speed to SOG.
D1
1384
1
85024_1.book Page 44 Tuesday, January 27, 2009 11:31 AM