Autohelm Inboard Autopilots (ST6000 and ST7000 systems) Service ...

Autohelm1. DescriptionThe Z080 and Z087 Windvane transducers are only compatible with AutohelmSeatalk products. The push pit transducer (2087) is identical to the Vane transducerin the Masthead Unit (Z080). When connecting a masthead Transducer (Z080) to anAutohelm ST7000 Autopilot do not connect the yellow core into the Aux 1 connectorin the connector box. Simply connect the other four cores and trim the yellow backshort.2. Functional Test (Z080 Masthead Transducer)The operation of the Z080 masthead mounted windvane can be checked using thefollowing procedure:-1. Connect +8V dc to the red core and 0V to the screen.2. Connect a digital volt meter across the screen and the green core.3. Rotate vane head through 360 degrees and check that the meter reading oscillatessinusoidally. The maximum reading must be between 6V and 5.5V. The minimumreading must be between 2V and 2.5V.4. Repeat section 3 with the meter connected across the blue core and screen.The anemometer transducer can not easily be tested and a replacement pod shouldbe fitted if suspected faulty.3. Functional Test (Z087 Pushpit transducer)The pushpit vane transducer can be functionally checked by following the Mastheadtest procedure.SeaTalk Service Manual 3