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8.4.3 Recognizing a Failed Compass
Manual Compass is required when the compass module fails and the readout does not change from
default (zero), regardless of the true heading. The compass readout will remain zero during the
compass routine and continue the acquiring process. The ACU assumes the compass heading of zero
is correct and continues the acquiring process. See Figure 8.3.3.
Figure 8.4.3 - Main GUI, Heading Indicates Zero
Note - A compass fault will not be indicated in the event the compass fails to produce a
heading.
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