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1.2 Using the USB Connection
The USB port built into this product is not isolated from the vessel power supply, VHF antenna ground
or GPS Ground. Please observe the following procedures when connecting the USB port to avoid
grounding problems.
If the computer is permanently installed on the vessel and/or electrically connected to any other vessel
equipment, including power supplies, it is recommended that connection is made using the NMEA 0183
or NMEA 2000 interfaces. These benefit from being specifically designed for use in the marine
environment and provide isolated and robust communication between your devices.
If a battery powered laptop is being used, then it is recommended that you always switch off the
computer before connecting the USB cable.
1.3 General notices
Compass safe distance
The compass safe distance of this unit is 0.5m or greater for 0.3° deviation.
RF emissions notice
Warning! The AIS receiver generates and radiates radio frequency electromagnetic energy. This
equipment must be installed and operated according to the instructions contained in this manual.
Failure to do so can result in personal injury and/or AIS receiver malfunction.
Warning! The antenna should not be co-located or operated in conjunction with any other transmitting
antenna. The required antenna impedance is 50Ω.
Notices
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