Velleman CS102 - Manual (Page 6)

CS102
19/04/2010 © 2008 Velleman Components nv 6
Note: The detector responds with a strong signal when it detects most valuable metal objects. If
a signal does not repeat after you sweep the search coil over the target a few times, the
target is probably junk metal.
False signals can be caused by trashy ground, electrical interference or large irregular
pieces of junk metal. False signals are usually broken or non-repeatable.
• Switch on the detector by turning the discrimination threshold control [7] clockwise. To switch it
off, turn the control counter clockwise until a click is heard.
• When desired, plug a headphone (not included) with a 3.5mm plug into the headphone jack [5].
Consider using a headphone with sound control, as the detector can only switch output sound
level between normal or low mode.
• Set the speaker (or headphone) sound level to normal or low using the volume button [3].
• When the low battery indication [8] lights up, replace the batteries to ensure detecting accuracy.
ALL METAL -mode
• To find any kind of metal, turn the discrimination control knob [1] counter clockwise until a click
is heard. Set the sensitivity control [6] to average. Setting the sensitivity control [6] to high in
all-metal mode will produce a complex return signal.
• Hold the search coil [M] ±1m above the ground, press and hold the trace button [4] and turn
the ground balance control [2] to area ‘P’. Release the trace button [4].
• Hold the search coil [M] ½”~2” from the ground. If the meter [10] points to the right (speaker
sound high), turn the ground balance control [2] counter clockwise; if the meter [10] points
towards the left (speaker sound low), rotate the ground balance control [2] clockwise.
Note: After each ground balance control [2] adjustment, press the trace button [4] to initialize the
new setting. Press the trace button [4] whenever the detector is drifting away from the
sensitivity setting, e.g. when moving from dry ground to wet ground.
• When searching in highly mineralized areas, set the sensitivity control [6] and threshold control
[7] to low by turning counter clockwise, and keep the searching coil [M] slightly further away
from the ground.
DISC -mode
• When a metal object is detected, set the discrimination mode detector [9] to ‘DISC’ and slowly
turn the discrimination control [1] clockwise (away from ‘all metal’). The further the knob is
turned, the more metals will be rejected. Refer to §6 how it works – phase shift for more
information.
• If the discrimination control [1] is set to zero, all detected metals will produce a long tone. When
set higher, rejected metals will produce a short tone while accepted metals still produce a long
tone.
TONE -mode
• Set the discrimination mode detector [9] to ‘TONE’ to get a tone indication depending on the
type of detected metal. Low resistive metals (e.g. Silver) will produce a high tone, while higher
resistive metals (e.g. Copper) will produce a lower tone.
• If the discrimination control [1] is set to zero, all detected metals will produce a high tone. When
set higher, rejected metals will produce a low tone while accepted metals still produce a high
tone.
9. Recommendations for use
• Treasure hunting can be a profitable and a rewarding hobby, if approached in a patient and
diligent manner. Time spent researching to locate a worthwhile search site can be time wasted if
your search is hasty and erratic. To achieve maximum results, it is important to decide on your
approach to each particular site, before the actual search.
• Tactics will be decided by the type of site – it is more profitable to scan a small area thoroughly
than to conduct a haphazard search of the total site. However, when the site is too far away for
you to make several return visits, a plan should be adopted which gives maximum site coverage,
but at the same time allows some detailed search.
• It quite often happens that where one find is made, other finds will be made in the immediate
vicinity. Accordingly, places having the highest density of markers represent the most likely
spots for further finds.
• The detailed search is made by marking out strips of a width determined by the sweep of the
detector, and moving forwards the approximate diameter of the search head after each sweep
until the ‘strip’ has been completely covered. The adjacent strips are covered in similar manner,
until the complete area has been thoroughly searched.
• Wooden pegs and string are ideal for marking out areas, but very often natural landmarks such
as trees, rocks and plants can with practice, prove just as effective.