If you need technical service for your B&G/Simrad system under warranty, you must contact the following email: service.es@navico.com indicating the problem, the brand, model and serial number of your equipment.

A NMEA 2000 network is made up of a completely different cable than that used in NMEA183. It is bidirectional and therefore allows multi-transmission of serial data, thus being self-configurable.

The NMEA 2000 or N2K network is made up of a main trunk from which branches come out to the different equipment by mounting “T” connectors at the Backbone points and which also carries power current to the equipment.

NMEA 2000 is much faster than NMEA 0183, and any device can be removed or connected to the NMEA network without needing to reset the rest of the connected devices.

It also allows you to prioritize messages sent to the network depending on their importance.

Yes, depending on the equipment/brand/model it is carried out differently.

First of all, check if the system has a single sensor or two. If you have two these are managed through a Gravity Switch.

a) If there is only one sensor: Remove the sensor from the thru-hull and rotate the paddle manually, check if it rotates well and if it shows the speed on the instrument.

If it doesn't check, with a voltmeter, measure between the black wire (negative) and the red wire (positive). The voltage should be between 5 and 12 volts, depending on which system it is, if there is no voltage, a failure in the control unit/processor.

If we have the voltage, measure between the black wire (negative) and the green wire (signal), and rotate the paddle slowly, there the voltage should change from 5-12 Volts to 0 Volts, if the voltage does not change, fault in sensor.

b)System with 2 sensors.

Check the connections on the gravity switch and verify its operation with a multimeter, the switch usually has a manual switch, switch to both sides and check.

As a last resort, modify the wiring and make the direct connection between each of the sensors and the CPU in the same way as with a single sensor.