9Optional Equipment
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calibrated in the optimal way. Anyway you have the possibility at any time to recalibrate the DDV
system. Therefore you have to activate at first the operating mode "Metal Detector".
Place the DDV system on the ground like shown in figure 9.3. Take care that no metal is situated near to
the coil! Press the key
OK
, to start the calibration.
In the first step of calibration you have to turn the sensitivity regulator completely to the right side and
so adjust it on full power. The discriminator has to be adjusted on the value 0. Take care that no metal is
located near to the coil! Now press the key
OK
, to start the calibration. Wait until this process is
finished.
In the second step of calibration you have to leave the sensitivity regulator in the same position and
place a piece of iron (e.g. screw or nail) under the detectors coil. Alternative choice is to place the metal
directly on the top of the coil, like you can see in figure 9.2. Now press again the key
OK
and wait until
this process is also finished.
After finishing the calibration a visual signal (yellow light) should be visible on the screen. If the
headphones are connected you will also hear an acoustical signal. The DDV system is now calibrated to
work correctly on-site.
OKM Ortungstechnik GmbH
Illustration 9.3: Calibration of the DDV system, step 1
Illustration 9.4: Calibration of the DDV system, step 2
