Simrad AP70 Operation Manual page 32

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Auto trim
When the vessel has a constant heading error due to external forces such as wind and current,
the Auto trim function corrects for this by building up a constant rudder off set.
The Auto trim value is reset every time the AUTO mode is entered or when a course change
greater than approximately 20° is made.
Auto trim is automatically disabled during a turn.
• Range: 10 - 800 sec
• Default: Depends on the vessel length
Off heading limit
Sets the limit for the off heading alarm.
An alarm occurs when the actual heading deviates from the set heading more than the
selected limit.
• Range: 5° - 35°
• Default: 10°
Low speed limit
Sets the limit for the low vessel speed alarm.
An alarm occurs when the vessel's speed goes below the selected limit.
• Range: 1 - 20 (kn)
• Default: 1 (kn)
Track steering
Track response
Defi nes how fast the autopilot shall respond after having registered a
cross track distance.
• Range: 1 - 9
• Default: 4
Track approach angle
Defi nes the angle used when the vessel is approaching a leg.
This setting is used both when you start navigating and when you use track off set.
• Range: 5° - 60°
• Default: 30°
Course change limit
Defi nes the limits for course change to next waypoint in a route. If the course change is more
than this set limit, you are prompted to verify that the upcoming course change is acceptable.
• Rang: OFF / 10° - 90°
• Default: 30°
XTD limit
Defi nes the vessel's accepted off set distance from the track. If the vessel goes beyond this
limit an alarm will be activated.
• Range: 1 (m) - 1 (NM)
• Default: 50 (m)
Drive select
Defi nes which drives that shall be used for the selected work profi le.
Rudder
Init rudder
Defi nes how the system moves the rudder when switching from power
steering to an automatic mode:
Work profi le setup | AP70/AP80 Operator Manual