[DG] [DG11] ST60+ wind system: inaccurate / unstable wind readings

[Derek - Raymarine - Moderator]

Hi Hans,

Thank you for your enquiry,

You indicate changing calibration, have you modified the wind display response times? If you have tried to damp the output from the masthead transducer to slow the update rate and the problem persists, then there is a fault elsewhere in the system.

The quickly changing voltages suggest that something is still amiss, it is quite possible that the mastcable of mounting socket at the top of the mast has some form of a short causing this behaviour.

We would suggest removing the transducer from the top of the mast, carefully inspect the socket at the top of the mast - any traces of green verdigris (corrosion) will point to a problem there.

You can make up a small lead with 1/8" spade connectors one end and a 5 pin DIN plug socket the other, this link here will identify the pinouts of the cable. Having made the cable, connect this direct to the rear of the ST60+ display and test again, if the unit tests out well, then this confirms a masthead cable/ cable through the boat fault. It could be interference being picked up by the cable for example.

If the fault persists, then it is likely there is still some issue with the masthead unit. It is unlikely to be the display because the transducer voltages are fluctuating and this is not related to the display itself.

Regards
Derek