Raymarine ST60 manual User calibration, Linearizing and aligning the wind transducer

Chapter 4: Calibration 27

Chapter 4: Calibration

4.1 Introduction

The ST60 Wind instruments are set up with factory-programmed default settings, so in order to optimize the performance of the instruments on board a particular vessel, the procedures in this Chapter must be carried out immediately after the completion of installation, and before the equipment is used for navigational purposes.

Where practicable, the calibration procedures are presented diagrammatically to show the sequence of key presses and the resulting displays. Adjustment instructions are given as applicable.

EMC conformance

•Always check the installation before going to sea to make sure that it is not affected by radio transmissions, engine starting etc.

•In some installations, it may not be possible to prevent the equipment from being affected by external influences. Although this will not damage the equipment, it can lead to spurious resetting action, or momentarily may result in faulty operation.

4.2User calibration

The User calibration procedures:

•Linearize and align the wind transducer.

•Select the required wind speed units

Linearizing and aligning the wind transducer

This procedure ensures that the sensors in the windvane transducer are correctly calibrated to record rotation of the windvane, then compensates for any small errors which may exist in the alignment of the wind transducer.

To do this:

1.Power-up the ST60 Wind instrument.

2.Slowly turn the vessel through two complete circles. This procedure automat- ically linearizes the windvane. A successful linearization is indicated by the digital display flashing and the buzzer sounding three beeps.