Preface vContentsPrefaceWarnings and cautionsElectromagnetic Compatibility (EMC) conformanceRaymarine equipment and accessories conform to the appropriate ElectromagneticCompatibility (EMC) regulations for use in the recreational marine environment.Correct installation is required to ensure that EMC performance is not compromised.Always check the installation before going to sea to make sure that it is not affected byradio transmissions, engine starting or other forms of interference.To do this:1. Turn on all transmitting equipment (radar, VHF radio, etc).2. Check that all electronic systems are unaffected by interference from the transmit-ting equipment.EMC installation guidelinesRaymarine equipment and accessories conform to the appropriate ElectromagneticCompatibility (EMC) regulations. This minimizes electromagnetic interferencebetween equipment, which could otherwise affect the performance of your system.Correct installation is required to ensure that EMC performance is not compromised.For optimum EMC performance, we make the following recommendations:WARNING: Product installation and operationThis equipment must be installed, commissioned and operated inaccordance with the Raymarine instructions provided. Failure todo so could result in personal injury, damage to your boat and/orpoor product performance. Before you install the ST70instrument, check that individual components are the correctvoltage for your boat’s supply.WARNING: Electrical safetyMake sure you have switched off the power supply before you startinstalling this product.WARNING: Navigational safetyAlthough we have designed this product to be accurate andreliable, many factors can affect its performance. Therefore, itshould serve only as an aid to navigation and should never replacecommonsense and navigational judgement. Always maintain apermanent watch so you can respond to situations as theydevelop.