Raymarine ST70+ Operating Manual

Also see for ST70 Instrument: Installation guide User reference guide User reference handbook Installation guide Operating guide

Contents

Raymarine ST70+ Operating Manual Manual pdf 48 page image

40 ST70+ User Reference ManualAlignmentTo carry out the wind vane alignment:1. With the Wind transducer setup menudisplayed, scroll to Align Vane, then press OK todisplay the Align Vane screen2. Sail the boat directly into the wind, then pressOK to accept the alignment and return to theWind transducer setup menu.Note: On a calm day, motor fast enough to create ‘yourown wind’.If there is any inaccuracy after you have completed the wind vane alignment, then:1. At the Wind transducer setup menu, select VaneAdjust, to display the Vane Adjust screen.2. Sail the boat directly into the wind, then scroll tomanually set the wind reading to zero.3. Press OK to accept the value and return to theWind transducer setup menu.4. Press CANCEL to return to the Transducersfound menu.Calibrate wind speedTo set the correct apparent wind speed reading:1. With the Wind transducer setup menudisplayed, scroll to Calibrate AWS, then pressOK to display the Calibrate AWS screen.2. Scroll to adjust the Calibration Factor so that theAWS value in the information box is set to thecorrect value.3. Press OK to accept the value and return to theWind transducer setup menu.4. Press CANCEL to return to the Transducersfound menu.Speed calibrationThe object of speed calibration is to ensure that the speed readings at the ST70+Instruments are true indications of the boat speed, ideally over the speed range of thevessel, i.e. from stationary to top speed.In order to take into account the changes in water-flow characteristics across the hull,for different speeds, it is advisable carry out speed calibration at as many speeds aspossible, over the speed range of the vessel. This is particularly important forplaning vessels.Conventional Speed transducers have a maximum of five calibration speeds, andsmart transducers (DST800) have up to eight. The correct calibration at each speedis achieved by applying a calibration factor to the indicated speed reading.In order to achieve accurate results, speed calibration must be carried out inconditions of zero tide and zero current.iD11227-1Press OK to acceptAlign VaneNow align the wind vane. Steer yourboat directly into the wind, then press OK.26°iD11228-1Press OK to acceptVane AdjustManually adjust your vane.206°D11229-1i See Docs for Manual Calibration.Calibrate AWSAWS: 3.2 KTS0.73Calibration factorAWS valuePre