1. To prevent the detector from detecting iron metals, set the ALL METALS/DISC
knob to about " 12 o'clock ". See Figure 10.
2. As a test, sweep the iron nail sample across the search coil at a distance of
about 5cm to 7.5cm, the detector will not beep and the stand-by display ( see
Figure 7 ) will remain on the monitor screen, but the other metal samples ( the
three coins ) will cause the detector to beep and the monitor screen to show the
display shown in Figure 8 when they are respectively swept across the search coil.
3. To have the metal detector ignore nickel metals, set the ALL METALS/DISC
knob to about " 3 o'clock " ( see Figure 11 ). Sweep the nickel across the search
coil at a distance of about 5cm to 7.5cm; the metal detector will not respond to the
nickel or the iron nail. But it will respond to the other samples.
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