2 instrument setup, Keel/surface offset – NorthStar Navigation EXPLORER D210 User Manual

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Northstar Explorer D210 Installation and Operation Manual

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