Normal (N)
Normal gives you the best performance on a wide
range of soil conditions, and it will provide the best
depth on a wide variety of target sizes. It works
particularly well with the supplied 11" DD search
coil for general detecting. You should always use
Normal in new areas where you are unsure of the soil
mineralisation and the depth of targets.
Special
Special (pg. 61) provides a range of specialist timings
available from the LCD menu. You can choose
between Sensitive Extra; Sensitive Smooth; Salt-
Coarse; and Sharp.
The GPX-4500 Timings define the characteristics
of the Transmitter (Tx) and Receiver (Rx). The Soil/
Timings switch allows you to choose from a range
of different Timings. This optimises the detector for
different soil conditions, the type of coil being used
and desired target sizes. Soil/Timings can make a big
improvement to your finds.
Certain Timings have a particular affinity to certain
soil conditions (magnetic, alkaline, neutral, etc.) and
on different target sizes and conductivities. By using
the Soil/Timings switch, changes to the timings can
be made to improve the performance in different
conditions.
Note: When switching between Soil/Timings, there is a
one second pause (i.e. one second of muted Threshold)
before detection continues.
Enhance
The Enhance timing is very effective at cancelling
most ground noise signals, and significantly reduces
the response on hotrocks. It works very well with
monoloop coils in all but the most extreme soil
conditions. It is very sensitive to a range of
target sizes.
Soil/Timings
Optimising the Detector
for Different Soil and Target Types
Always remember to re-Ground Balance the detector
after making any changes to the Soil/Timings switch.
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