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Page 4
Ideally this control should be set to a position where the threshold tone is
just audible. At this level, the presence of small or deep targets will be
more easily recognised. Turning the Threshold control in a clockwise
direction will increase the threshold tone. At the most clockwise setting,
the threshold is at its "maximum".
A threshold level that is too high will mask out the small or deep targets,
while a "silent" or non-audible threshold may not allow the small change
in threshold tone created by small or deep targets to be heard.
7.5
Disc/All Metal Switch
P0253-B
Metal objects fall into two broad categories: ferrous and non-ferrous.
A magnet can be used to determine if an object is a ferrous or
non-ferrous metal; ferrous metals are attracted to a magnet while
non-ferrous are not. Generally while detecting, ferrous objects such as
iron and steel are not wanted, whereas the more valuable non-ferrous
metals such as gold, silver, and bronze are.
In All Metal mode the Sovereign Elite will detect both ferrous and
non-ferrous objects. In this mode the Disc and Notch controls will have
no effect and the Sovereign Elite will respond in the same way to all
types of metal. All Metal mode is useful when searching for ferrous
targets such as relics. When searching in this mode, listen for faint
repeatable signals which can indicate a deep target.
Note: All Metal mode is also the pinpointing mode as the target
signal response is fast and sharp. The All Metal switch can also be
used as a reset for threshold tone when using variable tone option (see
section 7.8).
This switch is located in the centre of the control
panel and is used to select Disc. (Discriminate) or
All Metals mode. In Disc. mode, the Disc and
Notch controls have become active and can be
used in combination to ignore various unwanted
metal objects.
The Minelab Sovereign Elite
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