Simrad Robertson AP9 Mk3, Instruction Manual, Page: 50 / 202

Robertson AP9 MK3 Autopilot
2-22
20169223D
S9 Steering Lever (NFU)
NFU (Non Follow Up) steering
means the rudder will move for as
long as the lever (tiller) is activated
out from its spring-loaded centre
position.
In addition to the ordinary PORT
and STARBOARD movement, the S9
also has an IN-OUT movement.
When the S9 lever is pushed to the
IN position, it is physically locked
and can not be moved to PORT or
STARBOARD.
Activation is achieved by pulling out the lever. The lever is spring-
loaded to the mid-position, and rudder commands are made by
moving the lever to PORT or STARBOARD. Rudder movement will
stop when the lever is released and returns to the mid-position.
The S9 is disabled when pushed IN.
Several units may be connected in parallel.
Connecting details are shown on page 5-24.
ALTERNATIVE 1
AUTO/FU - NFU
When pulling out the lever, the autopilot mode will be set to NFU.
PORT and STARBOARD commands can be made, but when the S9
lever is pushed back to locked position, the NFU mode is maintained
and you have to select AUTO on the control unit.
ALTERNATIVE 2
AUTO - NFU - AUTO
This alternative will change the mode from AUTO or NAV to NFU
shown in the INFO display as:
NON FOLLOW UP
HELMSMAN
when S9 lever is pulled out. When the S9 is pushed in again, the
mode will change to AUTO, shown in the INFO display as
AUTOPILOT (NAV must be entered on the control unit).
* * * * * * *
AUTOPILOT