26 27
In order to identify different targets, the Excalibur II rates
them along a scale. The conductivity and size of a target
determines where it will appear on the scale.
High-conductivity targets, for example, a US quarter,
Australian $1 coin, 1£ coin or
€.50 cent will produce a
high pitch signal.
Low-conductivity targets, for example, small alloy
coins, foil, 9 carat and fine jewellery, will produce a low
pitch signal.
Pull-tabs, rings, and certain coins will produce an
intermediate pitch depending upon the object’s
conductivity.
The size of objects will have some effect on the
conductivity rating for targets. Generally, the larger the
target, the higher the conductivity rating and the higher
the pitch.
Ferrous targets contain a large amount of iron (e.g. iron
nails or steel). Generally, ferrous objects are not wanted,
so appear on the left side of the scale.
Non-ferrous targets have little or no iron content, such
as pure gold, silver, copper and bronze. Generally non-
ferrous targets are more valuable, so appear on the right
end of the scale.
The Excalibur II can operate in two different modes.
This control selects either Disc (Discriminate) or
Pinpoint/All Metals mode.
Disc (Discriminate)
In Disc mode, the Discriminate control becomes active.
The Discriminate control is used to ignore various ferrous
objects. Typical ferrous objects encountered by treasure
hunters are nails, screws, washers and bits of wire. These
objects are generally not considered to be of value, so it
is a distinct advantage to be able to ignore them while
detecting. (pg. 28)
Pinpoint/All Metals
In Pinpoint/All Metals mode, the detector will produce
a sound on all metallic targets, detecting both ferrous
and non-ferrous targets. In this mode the Discriminate
control has no effect and the Excalibur II will respond
with the same pitch to all types of metal.
The signal response in the Pinpoint/All Metals mode
is much shorter than in Disc mode, making it easier to
poinpoint the exact location of a target before digging.
(pg. 30)
Disc or Pinpoint/All Metals
Selecting a Mode
Identifying Targets
Non-ferrous
Aluminium Foil Pull-tabs9K Gold Rings
Some Coins
18K Gold Rings, Brass,
Copper, Lead, Some Coins
Nail
Ferrous
To Next Page
Loading...
