7
Detecting with the CS2MX
Sensitivity, ground effect & discrimination
CIGARETTE
PACKET
5p COIN
RING
PULL
SCREW
CAP
NAIL
HORSESHOE
MILK
BOTTLE
TOP
IGNORE (NO SOUND)
POSITIVE SIGNAL (SOUND)
1
10
Effect of discriminate control position
You will be able to get more performance out of your detector if you understand the relationship
between three aspects of detector operation - sensitivity, ground effect and discrimination.
If you increase the power of a metal detector too much the ground itself is detected and false
signals make the detector difficult to use. The ‘motion’ electronic system of the CS2MX
will ignore many ground effect signals but some types of ground, notably waterlogged
or containing salts or mineralisation require the detector to operate on reduced sensitivity.
The CS2MX can be set to ignore signals from certain categories of metal target. Small iron objects
in the ground are a problem on many farmland sites. These signals can be ignored by setting
the discriminate control to about number ‘2’ on the discriminate dial.
As the control is turned clockwise the signals from more types of metal likely to be worthless can
be eliminated. However, the discriminate control must be used with care because some objects
which could be valuable have similar electrical characteristics to rubbish items as far as the detector
can tell. Higher levels of discrimination also have the effect of reducing the depth of detection.
For these reasons it is best to keep the discrimination setting as low as possible.
The CS2MX is a robust design, however the control box should be treated with similar care
as any electronic product. Dry off any water splashes immediately. The search-head may
be immersed in water although the connector at the other end of the lead should always
be kept dry. Stem and search-head parts should be cleaned and dried at the end of a day’s
detecting. Do not use solvents. If the detector has been used on a beach it will be necessary
to wash sand and salt residue off the stem adjustment mechanism and the search-head
retaining parts using tap water. Remove batteries if the detector is going to be stored
for any length of time. Do not open the controlbox front panel. There are no user serviceable
parts inside and you may invalidate your warranty.
Detector care
