Chapter 4: Calibration | 23 |
Chapter 4: Calibration
4.1 Introduction
The procedures in this Chapter must be carried out before the equipment is used operationally, to optimise the performance of the instrument with the vessel.
Calibration information is presented in flow chart form. The flow charts show the various calibration screens and key presses necessary to carry out calibration. All key presses are momentary unless otherwise stated.
EMC conformance
•Always check the installation before going to sea to make sure that it is not affected by radio transmissions, engine starting etc.
4.2User calibration
User calibration enables you to:
•Set the compass heading response values. Use higher response values for rapid updates in reasonable sea conditions (for example when you are trying to maintain a locked course). Use lower response values in choppy sea conditions to damp out unstable readings.
•Set the magnetic variation.
•Set the heading reference (magnetic or true).
•Linearise and align the compass.
Power up the instrument then follow the procedure in the User calibration flow diagram.