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Optional Equipment
9.2 DDV system
With the DDV system (Disc Detector Visualization System) a powerful metal detector is on your disposal,
which not only supports your underground research with a visual representation but also offers you
various filter possibilities.
To use the DDV system just plug in the connector plug into the control unit of your eXp 4000. Then
select the operating mode "Metal Detector" in the main menu.
Attention: As soon as you confirm this option the ground balance will start. Detailed information
you can find in section 9.2.3 on page 70!
Now you have to pivot the detector coil continiously right above the ground, trying to keep the same
distance to the soil. Adopt the rhythm of the graphical representation on the screen. As soon as you pass
above a metallic object a yellow colored trace will appear in your graphic and you can hear an acoustical
sound through the headphones.
9.2.1 Calibration
The manual calibration is only possible for product version
V1.1 and following. In case of need all former
product versions have to be calibrated from the manufacturer. The version of your device you can read
inside the main menu.
Before using the metal detector for the first time the DDV system has to be adjusted on the eXp 4000. If
you purchased the DDV system together with the main unit the metal detector has already been
OKM Ortungstechnik GmbH
Illustration 9.2: Control Elements of the Detector
Coil
Connector plug
LED
Discriminator
Sensitivity
regulator
