Rudder Damping; Setting Autotrim; 3.6 After Commissioning; Emc Conformance - Raymarine ST70+ Installation Manual

Chapter 3: Commissioning Procedures
If necessary, use the Setting counter rudder procedure in the ST70+ User Reference
Manual, to improve autopilot performance.

Rudder damping

If the autopilot is 'hunting', i.e. continuously moving the steering backwards and
forwards by small amounts, use the Setting rudder damping procedure in the ST70+
User Reference Manual, to improve autopilot performance.

Setting AutoTrim

AutoTrim determines how quickly the autopilot applies 'standing helm' to correct for
trim changes, caused, for example, by changes in the wind load on the
superstructure, or an imbalance of engines.
Increasing the AutoTrim level reduces the time the autopilot takes to return to the
correct course, but makes the boat less stable. If the autopilot:
• Gives unstable course keeping and the boat 'snakes' around the desired course,
decrease the AutoTrim level.
• Hangs off course for excessive periods of time, increase the AutoTrim level.
If necessary, use the Setting AutoTrim procedure in the ST70+ User Reference
Manual, to improve autopilot performance.

3.6 After commissioning

When the dockside setup and open water calibration have been completed, and you
have returned to normal operation, your ST70+ system is ready for use. Refer to the
ST70+ Operating Guide for instructions on how to use ST70+ on a day-to-day basis.

EMC conformance

Always check the installation before going to sea to make sure that it is not affected by
radio transmissions, engine starting etc.
To do this:
1. Turn on all transmitting equipment (radar, VHF radio etc.).
2. Check that all electronic systems are unaffected by the transmitting equipment
(e.g. without undue interference).
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