2 instrument setup, Keel/surface offset – NorthStar Navigation EXPLORER D210 User Manual
Page 5
Northstar Explorer D210 Installation and Operation Manual
5
Keel/Surface Offset
An offset may be automatically added to
or subtracted from the depth reading to
compensate for the location of the transducer.
This allows the instrument to indicate the water
depth relative to the bottom of the keel or the
surface of the water.
To set the keel/surface offset:
1. Apply power while holding down
.
Hold down during power up
2. When the unit is on, release
. The display
will indicate if the current offset is keel offset
or waterline offset:
Hull Offset (Depth below the keel)
Surface Offset (Depth below the surface)
3. After 5 seconds the display will indicate the
current offset.
2 Instrument Setup
Note: A negative offset is used to display depth
below the keel and a positive offset is used to display
depth below the surface.
4. Use and
to change the value. If either
key is held depressed for more than one
second the reading will increase or decrease
rapidly.
5. The offset can be programmed in 0.1 unit
steps from -9.9 to 9.9 feet (or equivalent).
When programmed for a negative offset, ‘-’
will be indicated on the left hand side of the
display.
6. To display depth below the keel enter the
vertical distance between the bottom of the
keel and the depth transducer as a negative
value.
7. To display depth below surface enter the
vertical distance from the waterline to the
depth transducer as a positive number (no
negative sign).
8. To exit this mode, press and hold both
and
simultaneously. Alternatively, if no keys
are pressed for a period of 5 seconds normal
depth display will resume.
Press simultaneously
The display will now indicate the current water
depth.
3. Use and
to change the value. If either
key is held depressed for more than one
second the reading will increase or decrease
rapidly.
4. When the alarm is set, exit by pressing both
and
simultaneously. Alternatively, if no
keys are pressed for a period of 5 seconds the
normal depth display will resume.
Press simultaneously to exit
Note: If the reading is increased one step above 600
feet (or equivalent) the display will show OFF and
the alarm will be disabled. The alarm can also be
disabled by pressing both
and
for 5 seconds.
The word OFF will be displayed but the alarm depth
will be retained for future use.
OFF
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