Figure - Pyle PHMD1 Instruction Manual

 Adjust the Volume potentiometer, let you can hear the light hum tone, don't
adjust it too loud.
 Once you adjust the "DISC" button, you should adjust the balance over again.
In general, you should only press the Red Button to let the detector return to
the balance state.
 During operating, if there is no metals around detector, while the meter pointer
deviates from the "0"position, you should also adjust the balance over again.
5. Test samples, discriminate ferrous metal and nonferrous metal.
 Set the "DISC" knob to "MIN". Adjust the balance to let the meter pointer
point at "0". Adjust "VOLUME" to let the detector sound a light hum tone.
 Let the metal samples approach the search coil in turn, pay attention to the
meter pointer swing and the voice change.
 When the iron nail approach the search coil slowly, the meter pointer will
deflect to the left, and the sound will turn light. When the iron nail is more
closer to the search coil, the meter pointer will deflect to the left more and the
sound turns more lighter, until it disappears.(Figure.11)

Figure.10

Figure.11
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