Raymarine ST60 Tridata Owner's Handbook Manual - Setting The Correct Speed
Chapter 4: Calibration
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Setting the correct speed
Set the displayed (current) speed using one of the following methods:
• Use the Adjust to SOG screen to automatically set the current speed to SOG
(if available from SeaTalk). You must be running in slack tide conditions to
successfully use this method.
• Manually apply a calibration factor by means of the Cal factor adjust screen,
to set the displayed speed value to your best estimate of the vessel’s speed.
Adjust to SOG
The Adjust to SOG screen is displayed only if SOG data is available from SeaTalk.
The current SOG is displayed in the top right of the display (12.8 in the
illustration), and the current speed registered by the instrument is shown as large
figures ( 12.4 in the illustration).
It is recommended that, if you are running in slack tide conditions, you press the
reset
key for 3 seconds, to accept the SOG as the current speed. The calibration
factor is automatically re-calculated.
If you do not wish to accept SOG as the current speed, press the
timer
and
reset
keys together to select the Cal factor adjust screen.
Cal factor adjust
The Cal factor adjust screen enables you to manually adjust the calibration factor.
It shows the current calibration factor in the top right of the display, and the
current speed as large figures ( 12.4 in the illustration).
Use the
timer
or
reset
key to adjust the calibration factor so that the current
speed is the speed through the water.
If SOG data is available from SeaTalk, you can turn to the Adjust to SOG screen by
pressing the
timer
and
reset
keys.
Note:
If neither of the above methods gives satisfactory results, carry out the Speed cali-
bration procedure (part of Intermediate calibration).
Set temperature units
Select either °C or °F, as required.
Temperature calibration
Set the display to show the current water temperature.
Timer buzzer
Switches the count-up and race-start timer buzzers on and off.