CREDO DDM Metal Detector, User Manual

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and experiment in order to obtain the best possible results on any particular
site. All sites and soils are different and settings that will give good results
on one site may be less successful if used elsewhere. The
CREDO DDM
is designed to detect the very deepest of targets and operates near to the
limits of what is achievable with induction balance
.
Assembly & Preparation
The CREDO DDM is supplied boxed and ready for quick assembly by
simply attaching the two lower stem poles to the top one, tightening the
collars and attaching the coil to the lower stem section, using the plastic
bolt and friction washers supplied and tightened by hand so that coil is held
at the correct angle to the stem; the coil cable plug is inserted to the socket
in the control box and then tighten the knurled ring, taking care when
winding the cable around the stem that the cable is not strained.
The centre stem pole is of the same tube diameter as the top one and can
be left off in circumstances where a short stem is needed; it is meant for
use on steep sites, river banks, caves, ditches and similar conditions. This
configuration is also useful if the CREDO DDM
is to be used by children
and makes it a good family metal detector that can be used by anyone in
the family
.
The CREDO DDM is supplied with a drop in battery holder that can be
used for all types of AA size batteries, (alkaline or rechargeable); a
charging socket is provided to the battery box for connecting a charger unit.
To insert or change batteries remove any three of the thumb plastic screws
from the base lid of the battery box (the battery box is below the arm cup at
the top of the detector stem) and loosen the fourth screw. Turn the cover to
the side. Insert the 10 batteries, in their correct alignments, into the plastic
holder and make sure that all the terminals have a good electrical contact.
Locate the battery holder into the compartment, ensuring the connecting
terminals of the battery holder are in good contact with the two electric
spring loaded terminals behind the recharge socket. Do not over-tighten the
plastic thumb screws when refitting.
If you wish to use headphones (highly recommended) connect your
available set to the 6 mm jack socket on the battery box. The CREDO DDM
has an internal loudspeaker so headphones are not absolutely essential.
For any headphones that have a volume control, ensure that this is set to