28
ST70+ User Reference Manual
Calibrating conventional transducers
Use these procedures to calibrate Depth & Temperature values for conventional
transducers.
Setting Depth offset
If you want to apply an offset to your depth readings, you MUST ensure the offset
value is correct, before relying on subsequent Depth data.
WARNING: Ensure you use the correct depth offset
The use of the correct depth offset is critical to the safety of the
vessel. If an incorrect offset value is applied, this could result in
misleading depth information being displayed with a consequent risk of
running aground. Take great care to ensure you set the correct value.
Set the correct depth offset as follows:
1. With the
Transducers found
menu displayed,
select
Depth
. to display the
Depth
transducer
menu.
2. With the
Depth
transducer menu displayed,
scroll to the
Depth Offset
option, then press
OK
,
to display the
Depth Offset
setup page.
•
Check the type and value of the offset
currently applied:
•
If the offset type is what you require and the
value is correct for your boat, press
CANCEL
to return to the
Depth
transducer
menu, then proceed from step 6.
•
Otherwise proceed from step
3.
3. If necessary, press
PAGE UP
to select the upper
(offset type) adjust box.
4. Scroll to either
Water line
,
Keel
or
Transducer
, as
required. If you select
Transducer
, an offset
value of zero is automatically applied.
5. If you have selected:
•
Either
Water line
or
Keel,
press
PAGE DN
to
select the lower (offset value) adjust box
then scroll to set the correct value.
•
Transducer
, ensure the offset value is zero.
6. Press
OK
to save the offset value and display the
Depth
transducer menu.
7. Press
CANCEL
to return to the
Transducers found
menu.
i
D1
1175-1
Depth
Depth Offset
Raymarine
Serial no. 211342
Press OK to select
i
D1
1
176
-1
Press OK to accept
Depth Offset
Keel
2.5
FT
Warning! Incorrect depth offset may lead to
vessel running aground.
85024_1.book Page 28 Tuesday, January 27, 2009 11:31 AM
