Emc Installation Guidelines - Humminbird CHIRP Installation Manual

EMC Installation Guidelines

Humminbird equipment and accessories conform to the appropriate Electromagnetic Compatibility (EMC)
regulations, to minimize electromagnetic interference between equipment and minimize the effect such
interference could have on the performance of your system.
Correct installation is required to ensure that EMC performance is not compromised.
NOTE: In areas of extreme EMC interference, some slight interference may be noticed on the product.
Where this occurs the product and the source of the interference should be separated by a greater distance.
For optimum EMC performance, we recommend that wherever possible:
• Humminbird equipment and cables connected to it are:
– At least 3 feet (1 m) from any equipment transmitting or cables carrying radio signals (e.g. VHF
radios, cables and antennas). In the case of SSB radios, the distance should be increased to 7 feet
(2 m).
– More than 7 feet (2 m) from the path of a radar beam. A radar beam can normally be assumed
to spread 20 degrees above and below the radiating element.
• The product is supplied from a separate battery from that used for engine start. This is important to
prevent erratic behavior and data loss which can occur if the engine start does not have a separate
battery.
• Humminbird specified cables are used.
• Cables are not cut or extended, unless doing so is detailed in the installation manual.
NOTE: Where constraints on the installation prevent any of the above recommendations, always ensure
the maximum possible separation between different items of electrical equipment, to provide the best
conditions for EMC performance throughout the installation.
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