Operation
A5-8 ENVI-MAG Manual
Manual mode—
Total-field/Gradiometer
(Semi-automatic)
These instructions lead you step by step through the first three survey lines of an
imaginary gradiometer survey in the advanced mode. A fully manual procedure
is explained first, followed by some suggestions on how to make it semi-automatic.
It is assumed that:
▲ the lines are marked and pegged at 10 units of interval,
▲ the sensor is carried on the staff. This results in highest precision, as this
eliminates the possibility of a small magnetic signature caused by the
ENVI-MAG console. The sensor has to be oriented for each reading.
Figure A-39 A typical gradiometer configuration.
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