[CA] [CA11] Trouble displaying boat speed from Signet sensor

[Chuck - Raymarine - Moderator]

HKrausz,

Again, the Signet speed transducer does not appear to be compatible with Raymarine equipment and must be replaced. Raymarine STW transducers are designed to simply to open and close a +5V circuit. Accordingly, the iTC-5 would sense either 0V or 5VDC depending upon the position of the transducer's paddle wheel. As such, a series of +5VDC pulses would be sensed by the iTC-5 as the paddle wheel rotates. This contrasts with the Signet transducer produces an AC voltage whose value is proportional to the speed of the vessel.