[DG] [DG11] T910 Showing incorrect speed

[Derek - Raymarine - Moderator]

Hi Xarven

Thankyou for your enquiry

There could be several causes
1) Interference caused by coiling the speed transducer cable next to the depth transducer or depth transducer cables, coils will act like an antenna and can pick up induced interference.

2) Power supply issues, try connecting a small jump wire from the 12v supply to the hull transmitter to the same connection on the hull transmitter as the red wire of the speed transducer

3) There could be a fault with the speed part of the transducer and it should be replaced.

Thanks
Derek