Velleman K7102, Иллюстрированное руководство по сборке, Страница: 8 / 12

8
Test
1. Connect a 9V battery to the battery holder.
2. Go to a place where NO metal object is known to be in the vicinity.
3. Turn preset RV1 fully clockwise .
4. Turn RV2 fully anti-clockwise.
5. Depress the push button and hold it in during the final adjustments .
6. Turn RV1 anti-clockwise until the LED goes out.
All further remaining adjustments are now concerned with RV2 only.
To set to maximum sensitivity: turn RV2 until the LED is weakly lit. When the detector now comes into the
vicinity of a metal object, the LED will be more brightly lit. This gives an indication of the distance and/or the
size of the metal object.
If desired, the PCB can be built into the box type G407. A hole must then be made in the lid for the push
button, the LED and the potentiometer.
If the buzzer type SV4/12 has been requested, then this should be mounted in the place marked BUZ1.
Pay careful attention to the polarity.
11. Test & final adjustments