Raymarine ST70 Instrument, Installation Manual

Page: 58 / 73

48 ST70+ User Reference Manual
Carry out the procedure for either Speed calibration for conventional speed
transducer or the Speed calibration for smart transducer , as appropriate for your
vessel.
Speed calibration for conventional speed transducer
When calibrating a conventional Speed transducer, you can obtain correct values for
the calibration factor by one of two methods:
•
If SOG information is available, you can use this as a reference, to enable you to
set the correct calibration factor.
• If SOG information is not available, you need to manually calculate and apply the
correct calibration factor.
Carry out the Starting speed calibration procedure (below) followed by either:
• the Set to SOG procedure ( page 49 ), or
• the Manual speed calibration procedure ( page 49 )
as required.
Starting speed calibration
To calibrate the Speed transducer:
1. With the
Transducers Found menu displayed
(see Preliminary procedure on page 45 ), use
the appropriate Instrument keypad to scroll to
the
Speed option.
2. Press
OK
to select the Speed transducer setup
menu.
3. Scroll to the Calibration option.
4. Press OK to select the Speed Calibration
screen
5. Press
PAGE UP
to highlight the calibration
speed field.
6. Scroll to select the lowest calibration speed.
7. Apply the appropriate calibration factor, using
one of the following:
• If SOG information is available, use the
Set
to SOG procedure.
• If SOG information is not available, carry out
the Manual speed calibration procedure (on
page 49 )
i
D1
1230-1
Transducers Found
Speed
Raymarine
Serial no.19863
Press OK to select
i
D1
1231-1
Speed
Calibration
Raymarine
Serial no.19863
Press OK to select
i
D1
1232-1 Press OK to accept
Calibration
2.0 KTS
1.8
Calibration
factor
Information box
content dependent
on calibration mode
Calibration speed
87099_1.book Page 48 Thursday, March 12, 2009 10:18 AM