CS-990 GB
8
OPERATING PROCEDURE
The fundamental principle of detector operation is that the detector must be tuned to the correct
level. This is the level when the signals are balanced, and this is indicated by the detector being
neither silent nor sounding off. In fact, the correct tuning level is the threshold setting when the
sound is just beginning to break through.
For best results, it is important to set this tuning level accurately and to maintain it at all times when
searching.
Follow this procedure:
1.
Set the detector to the desired ground exclude position G 1 or G 2.
2.
Set the Simdisc control to the desired mode of operation: Off, meter discrimination or meter
and audio discrimination.
3.
Press and hold auto-tune button, turn on the detector by rotating the On/Off tuning control
until a faint sound is heard. Lower the search head to the operational/searching height and
only then release the auto-tune button. You are now ready to commence searching. Should the
tuning level alter for any reason simply retune the detector by pressing the auto-tune button.
OPERATING THE DETECTOR IN THE FIELD
What now follows is a brief guide on how to obtain the best results from your newly-acquired
detector and how to recognise the signals given by the detector.
1.
On inland sites select G 1.
2.
On a beach with wet, salt sand select G 2.
Having selected the main mode of operation, G 1 or G 2, you can now decide which mode of
discrimination you wish to operate in:
a) - G 1, Simdisc OFF
In this setting, the detector will give a positive signal to all metals. The meter needle swings to the
right and the sound becomes louder.
b) - G 1, Simdisc Meter
In this setting, the detector will give a negative meter reading to iron, however the sound will
become louder. The signal received from a small piece of silver paper will be an increase in volume
loudness and a slight negative or unnoticeable meter change. Larger pieces of silver paper and all
other metals will give a positive signal both on the signal and meter channel. The meter needle
swings to the right and the sound increases in volume.
c) - G 1, Simdisc Meter and Audio
In this setting, the signals given by the detector for iron are a negative indication by the meter,
increase in volume combined with a reduction in frequency.
