been there done that...
Wind angle voltage
Wind Angle has stopped working
For a Navigator Wind Monitor you will need to identify the cable that goes back to the display at the mast base junction box and disconnect the three wind angle phases, which are the green white and yellow wires. You will then need to measure the wires that come down from the mast. It is important not to let the wires coming from the mast touch, or you may cause damage or blow the fuse. For the Dataline, you do not need to disconnect anything. If the Mast Head Unit is working correctly, then the voltages measured with black probe on black wire should approximately agree with the following table:
Angle Green White Yellow
0 0 9.0 9.0
30 1.6 6.0 10.4
60 3.0 3.0 12
90 6.0 1.6 10.4
120 9.0 0 9.0
150 10.4 1.6 6.0
180 12 3.0 3.0
210 10.4 6.0 1.6
240 9.0 9.0 0
270 6.0 10.4 1.6
300 3.0 12 3.0
330 1.6 10.4 6.0

For a Micro 220 there is only one yellow wire for wind direction. The voltage range is from 0 volts (approximately 3 degrees) to 6.5 volts (approximately 357 degrees), with 180 degrees being approximately 3.25 volts.

Both Wind Speed and Angle have stopped working
Check the fuse! (Replace with 125mA 20mm quick blow). Using a multimeter at the mast base, put the black probe on the black wire and the red probe on the red wire. It should be around 12 volts, if not the Databox/Wind Monitor/Micro is at fault. If it is, then the Mast Head Unit or mast cable is at fault. More information about fuse replacement when a new mast head unit is fitted here
Dataline Databus
The Dataline Databus is based on NMEA 0183, but it is not 100% compatible, particularly the Boat Speed and Depth sentences. Our NMEA Databox converts Dataline Databus into compliant NMEA 0183 for use with other manufactures equipment, such as Chart Plotters, Auto Pilots and Radars. The Databus connections are as follows:
Red +12V
Black 0V
Green Data Gnd
White Data Out
Brown Data In
How do I check my (mast) cable
This question is too complex for our support page, but if you type 'testing a cable with a multimeter' into Google, it comes up with some informative pages.
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