Display Function - Marine Autopilots, Engine Controls and Instruments

Compass Compensation:
do alignment first!
Sensor compensation and alignment function
are only accessible on the display unit, to
which the sensor is physically connected via
the NMEA port, and the port has been properly
configured n0=01 for the primary compass
or n0=02 for a secondary compass, and
n1=00 for the HS8000 or n1=07 for the PB200
or H2183.
Aligning the Sensor
Reading the previously
saved alignment
correction
1. Press and hold
left and right button.
2. Press middle
AP
button twice.
3. Release all
three buttons.
For example
"C_02" will stand for an
alignment correction of +2 degrees. The value
may be modified with the left or right button. This
correction is added automatically to the sensed
heading. Press the middle button again to display
the compensation status function.
Alignment Procedure
First you need to create a deviation table. That
will be the basis for a correct sensor alignment.
The deviation table might have positive and negative
numbers over the full circle.
A deviation table can only be created by taking
relative bearings of distant objects and comparing
them with the indicated heading. Never
use GPS tracks to build a deviation table.
With the table at hand, adjust the alignment
correction "C" (offset) until negative and positive
deviation values become equal in size.
Note: on the PB100/200 sensor, the offset
correction will also be valid for the apparent wind
angle.
ATTENTION: the Alignment Correction may
not be displayed correctly after (re-) installing
either the sensor or the display unit, to which
the sensor is connected. The correction must
be verified in this case.
Compensation
Status Display:
The compensation
status display follows
the alignment correction
display (see left).
means "not
compensated",
means "compensated".
AP
ATTENTION: compensation
status is not
correctly displayed after
a new installation or after
the sensor or display have
been replaced.
A new compensation
can be started by briefly
pressing the left or right button (see below).
The middle button exits from the compensation
function.
Starting a new compensation
cycle
1. Select the compensation
status on the
Display (see above).
2. Briefly press the
left or right button.
3. Start turning (for
the HS8000 a starboard
turn through 540
degrees is required, for
other sensors only a full
turn to either side is
needed).
The turn has to be completed
within one to three minutes
and must be executed under perfectly
smooth conditions. The vessel must not be
heeled. Power lines or steel structures below or
near the vessel must be avoided. A significant
depth and a distance of several hundred meters
(a few hundred yards) from bridges or buildings
would present acceptable conditions.
Completion of a compensation cycle is indicated
by CAL-Auto (or by CAL-OFF if not successful).
WARNING: executing a compensation bears
the risk of introducing large compensation errors.
A bad compensation can only be overwritten
by a good one. The quality of a compensation
cycle has to be verified with a newly produced
deviation table.
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