Simrad AP25 - Manual (Page 19)

Operation
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After approximately 5 seconds, the system is operative and the
unit that was turned on will show the Standby mode display.
Other units in a multistation system will display "Inactive".
Control is transferred to any single unit by pressing its’ STBY
button.
A long press (2-3 sec.) on the STBY button switches the system
OFF and during this time, the alarm will sound.
Note ! In an emergency, it is possible, on a multistation system, to turn
OFF the system at any control unit by pressing the STBY button
for 2-3 seconds.
STBY mode is the mode that is used when steering the boat at
the helm.
Display information:
− Standby mode
− Current heading 345°
− Rudder angle 1° to
starboard.
Note ! When the autopilot operates on Virtual feedback, the numerical
indication of the rudder angle is omitted.
Virtual feedback
See pages 67 and 109 about Virtual feedback.
Flashing course knob icon
When the course knob and the PORT/STBD buttons are used
for settings etc., an icon will flash on the screen to tell that no
course changes can be made unless you press the AUTO button.
Alarms
In the event there is an audible alarm with explaining text on the
control unit, refer to section 6, Trouble shooting.