Basic Adjustment; Fine Adjustment - Monacor GMD-10 Mode D'emploi

CAUTION:
Never adjust a very high volume when using head-
phones. Permanent high volumes may damage your
hearing! The human ear will get accustomed to high
volumes which do not seem to be that high after
some time. Therefore, do not further increase a high
volume after getting used to it.
Traffic safety: Never use headphones in areas of high
traffic density. When using headphones which also
allow perception of outside noise, only adjust the
volume to such a level that the ambient noise is still
audible.
5 Searching Metal Objects
Prior to using the unit for searching metal objects in
unknown areas, make yourself thoroughly familiar with
the unit. Test it with various familiar objects of different
metals and observe the unit's response to them.

5.1 Basic adjustment

1) Set the switch (12) to the position OPERATE.
2) Turn the control VOLUME (9) clockwise to approx.
1 / from the position OFF.
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3) Set the control DISCRIMINATION (10) to mid-posi-
tion.
4) Hold the unit with the search coil above the area to
be searched. The distance from the ground should
be approx. 30 cm and there must be no metal
objects at a distance of less than 30 cm from the
search coil.
5) Keep the reference button (11) pressed and adjust
the control TUNE (13) in such a way that the point-
er of the indicating instrument (8) is at "0". Then re-
lease the button.
6) Adjust the control VOLUME (9) in such a way that a
permanent audio signal of low volume will be
audible.
7) To reset the pointer to "0" while searching in a dif-
ferent environment, shortly press the reference but-
ton once again.
5.2 Searching
1) Hold the search coil at a distance of approx.
2 – 3 cm from the ground.
2) Slowly sweep the search coil above the ground
while always keeping it parallel to the ground.
(Never swing the search coil above the ground in a
pendulum movement.)
3) If the unit detects a metal object, the position of the
pointer in the indicating instrument (8) and the
volume of the audio signal will change.
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be reproduced in any form or by any means for any commercial use.
4) After operation, always switch off the unit to prevent
Notes
– For covering the whole area when searching, slow-
– Do not test the unit on the floor of a building. Most

5.3 Fine adjustment

Via the control DISCRIMINATION (10), the unit allows
a fine adjustment for distinguishing metals. The further
the control is turned clockwise, the higher the required
content of non-ferrous metal of an object so that the
pointer will deflect to the right. With a low DISCRIMI-
NATION adjustment, the pointer will deflect to the right
in case of a steel coin with thin copper coating (e. g.
5 Eurocent coin), while with a high DISCRIMINATION
adjustment, the pointer will move to the left due to the
high iron content of the coin.
may be necessary to repeat it at a different location.
rate measuring results concerning the discrimination
of metals.
6 Specification
Search coil: . . . . . . . . . . . Ø 17 cm
Power supply: . . . . . . . . . 6 x 1.5 V battery, size AA
Ambient temperature: . . . 0 – 40 °C
Length of handle: . . . . . . . 50 – 80 cm
Weight:. . . . . . . . . . . . . . . 700 g
Subject to technical modification.
® INTERNATIONAL GmbH & Co. KG. No part of this instruction manual may
With ferrous objects, the pointer will deflect to
the left and the volume of the audio signal will be re-
duced.
With non-ferrous objects, the pointer will deflect
to the right and the volume of the audio signal will
be increased.
unnecessary consumption of the batteries: Turn the
control VOLUME (9) counter-clockwise until it locks
in the position OFF.
If the unit is not used for a longer period, the bat-
teries should be removed to prevent damage to the
unit in case of battery leakage.
ly move the search coil above the ground in paral-
lel, overlapping sweeps. If you wish to be on the
safe side, search the same area once again with
sweeps turned by 90°.
floors contain metal components which may inter-
fere with the measuring results.
Within buildings, the unit may alternatively be
tested e.g. on a table made of wood or plastic.
The fine adjustment also depends on the ground. It
With heavily oxidized objects, there may be inaccu-
GB
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