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OPERATION
PRINCIPLE OF OPERATION
The detector is operated at the frequency of 15 kHz, which is called the Very Low
Frequency (VLF). In the VLF, the detector is allowed to response only to metal
objects and ignored effects of iron ground mineralization. With the TR
(Transmitter-Receiver i.e. TR1 & TR2 in the MODE SELECTOR) discriminating
circuitry, differentiation of metal can be achieved. Differentiation of a metal
detector is its ability to distinguish between metals objects as well as ferrous and
non-ferrous metals. Ferrous metals contain iron, while non-ferrous metal such as
gold, silver, copper, platinum, aluminium, lead, and zinc do not.
When the detector senses a metallic object, the meter reading changes, the
GREEN NON-FERROUS INDICATOR (5) or the RED FERROUS INDICATOR (3)
turns on or off, and the detector sounds one of three tones. The actual reaction
depends on what metal is detected: the higher the tone pitch, the stronger the
detection.
PREPARING THE DETECTOR
Hold the detector in a comfortable position; then rotate
VOLUME
clockwise away
from OFF to the desired sound level. Set
OPERATE/BATT TEST
to
OPERATE
to
detect.
MODE SELECTION
The detector provides you the following mode of operation:
1. OFF – power off. Cut all power supply to the detector.
2. VLF – for testing the batteries and tuning of the detector.
(See “TUNE ADJUSTMENT” and “GROUND ADJUSTMENT”)
3. TR1 – to detect extreme differences in metals such as
between iron and gold. Iron shows in the ferrous section while
gold in the non-ferrous section.
4. TR2 – to detect finer distinction between metals such as
aluminium and gold.
TUNE ADJUSTMENT
Your detector needs to be tuned between the detector’s receiver and transmitter
circuits to provide consistent pointer and tone indications. This TUNE operation is
essential every time when you turn on the detector. To tune your detector:
1. Make sure that the BATT TEST (11) switch is in the OPERATE position.
2. Turn the VOLUME CONTROL (12) to the 10 o’clock position.
3. Rotate the MODE SELECTOR (6) to VLF position.
4. Set GROUND CONTROL (7), DISCRIMINATION (8) and SENSITIVITY (9)
ADJUSTER to mid-range.
5. Lift the search coil at about the height of a desktop and away from any metal
objects. Hold down the RED BUTTON (10) on the handle and slowly rotate
TUNE ADJUSTER (4) until the VIEWMETER (18) pointer rests at or near 0.
