Part 4. Gradiometer Tuning - proFEX MG-200 Manual

Part 4. Gradiometer Tuning

There are only two types of tuning: if there is interference from tilts, balancing of sensors is needed; if
the interference is from turns, alignment of sensors is needed. These tunings are rather simple,
performed as needed, and after a little practice take about a minute for balancing, and a few minutes
for alignment.
Most of the time interference caused by poor alignment is not high and is presented as a low level of
constant field when moving along the route. It can be removed by pressing button 7, resetting field level
to "0" after changing the direction of movement. If however, this is not enough, perform alignment
tuning as described below.
The need for tuning should be determined by the user, taking into account what level of interference he
considers acceptable for this particular search. Normally it means 1-2 tunings a day.
When tuning might be needed:

Interference from 3-5 degree vertical tilts while moving is over 3-5 units (Balancing is needed)

Interference from 3-5 degree horizontal turns (change of direction during movement) is over 3-5
units (Alignment is needed)
Always perform Balancing first.