approximate optimum inputs and since no roll or pitch
MANUAL OPERATION.-- Magnetometer-
inputs are provided, compensation of the ship's induced
controlled equipment provides for operator control of
magnetism using manual operation is not as good as the
degaussing coil currents when a fault exists in the
compensation obtained with automatic operation. For
magnetometer group circuits. Adjustments associated
this reason, when normal operation is not possible, you
with the ship's heading and the local earth's field (Hand
should manually operate only the affected coil or coils.
Z zone of operation) are made during manual operation.
The general procedure for manual operation is as follows:
Since operator-set heading and earth's field inputs only
10-13
