NASA Marine CLIPPER, Руководство пользователя

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FIGURE 7 - Magnetic Variation Display
Positive numbers represent Westward variations, and negative numbers (as shown on
Figure 7) represent Eastward variations. Each press of INC or DEC alters the stored
variation in steps of 0.1°. The fractional value is always repeated in the backlight digit (as
shown on Figure 7). If the total variation is greater than ± 9.9°, the fractional part of the
angle is shown only in the backlight digit.
Press INC or DEC to change the stored variation value to the correct value. Note that
changing the magnetic variation has no effect on the accuracy of the compass’s
compensation (see below).
If it is desired to end Engineering adjustments, press ILLUM to return to normal heading
indication, using the revised magnetic value.
MAGNETIC OR TRUE READOUT
If not already in Engineering (”En” displayed), hold down the ILLUM button while turning
on the power to put the unit into the Engineering mode.
Press STEER and INC together to switch between Magnetic and True display of the
compass readings. When True is selected “TRUE” is displayed, and the variation shown is
used to correct the readings made by the sensor. When Magnetic is selected, “MAG” is
displayed as shown on Figure 7. In Magnetic indication mode the variation value is ignored.
If it is desired to end Engineering adjustments, press ILLUM to return to normal heading
indication.
SETTING THE STEERING SENSITIVITY
During assisted steering in normal operation, the steering chevrons show the size of the
heading error, and the direction to steer to remove the heading error. The sensitivity,
which is the size of the steps between each chevron, is set in Engineering. The sensitivity
step size represents the error required to light each successive chevron during assisted
steering. The higher the sensitivity step size, the larger the error required to light all the
chevrons, which fill up as the error increases.
STEER INC
DEC ILLUM
-6.5
5
MAG.