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The Minelab SD2200v2
4.
Control Box
4.1
Rear Panel Controls
4.1.1 Power Switch
The
Power
switch controls the power supply from the battery to the control
box. Always switch the detector Off before connecting or disconnecting
the coil or battery, and when not in use.
4.1.2 Channel Switch (Ch1, Ch2, Both)
The
Channel
switch selects the channel used for searching:
Ch1, Ch2
or
Both
. Searching is usually done in the
Both
position which gives the
maximum sensitivity to the greatest range of targets. When detecting in
highly noisy ground, the selection of
Ch1
rather than
Both
might improve
the stability of the threshold. However, sensitivity to certain types of targets
is reduced when using only
Ch1
and is not recommended.
4.1.3 Threshold
The
Threshold
is used to adjust the loudness of background sound. Minelab
recommends a soft audible headphone signal which is comfortable to listen
to for extended periods.
4.1.4 Boost Switch (Shallow, N, Deep)
The
Boost
switch can be used to enhance the signals produced by different
types of targets.
In the
Shallow
position, signals from small targets close to the surface of
the ground will be amplified, allowing easier detection of such targets. This
option is best suited for quiet ground. For normal detecting conditions use
the
N
position which responds to all signals without boosting. The
Deep
position is recommended when looking for big targets at greater depth in
noisy ground. In this mode random soil signals are smoothed, making
small changes in the audio signal from large deep targets easier to hear. It
may, however, mask some signals from very small targets near the surface.
Instruction Manual
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4.1.5 Tune
The
Tune
control is used to lower the effects of electromagnetic interference
from sources such as power lines, radio transmitters and other metal
detectors. The
Tune
control is engaged by pressing the push button switch.
If electromagnetic interference is experienced when using the detector,
simply press the
Tune
button once to automatically select the best detection
frequency.
4.1.6 Tone
The
Tone
control can be adjusted to suit an individuals hearing by changing
the pitch of the background threshold tone.
Figure 3 - Rear Panel Controls
