Raymarine ST60 Tridata Owner's Handbook Manual page 48

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Note: It is recommended that the speed calibration procedure is carried
out in conditions of minimum tidal drift.
To carry out a speed calibration, start the Intermediate calibration
procedure and use the
screen (see sheet 1 of the Speed calibration flow chart). Proceed with the
speed calibration as follows:
1. With the Calibration Run Length screen displayed, press the
2. Set the length of the intended calibration run, using either the
3. Press trip and reset keys together to commence the speed calibration.
4. Start first outward leg of the calibration run and as you pass the start
5. At the end of the measured distance on the outward leg, press the
6. Turn the vessel round, start the return leg and as you do so, press the
7. At the end of the return leg, press the
8. Press the
reset keys together to enter adjust mode. In this mode, the displayed
run length flashes on and off.
to decrement or the
can set any value between 0.25 and 2.50.
The Cal status screen is displayed. The text at the bottom of the screen
alternates between Strt 1 and the calibration factor (CF) currently
applied.
point, press the
speed
the screen. As the calibration run proceeds, the displayed value will
increment.
speed key again so that:
The text rEtrn is flashing at the bottom of the screen.
•
• The displayed distance freezes. Note that this value will not be the
same as the measured distance due to errors introduced by tidal
flow.
key so the rEtrn legend stops flashing and the displayed value
speed
increments.
run. At this point:
The text Strt 2 alternating with the new calibration factor is dis-
•
played at the bottom of the screen.
• The displayed distance freezes. This value should be very close to
the actual (measured) distance of the calibration run.
depth and
factor.
ST60 Tridata Instrument Owner's Manual
key to proceed to the Calibration run length
speed
key to increment the run length value. You
reset
key, so that the text out shows at the bottom of
speed
speed keys together, to store the new calibration
trip
trip
key to end the calibration
and
key