Velleman CS400 Bedienungsanleitung Seite 11

To test your metal detector:
1. Switch on your metal detector.
2. Place it on a plastic or wooden table. Remove all watches, rings and other jewellery or metal objects
on your hands, wrists and arms.
3. Adjust the search coil so that the flat part faces upwards.
4. Select the DISC, NOTCH or AUTO-NOTCH mode. Evenly sweep the nail 10 to 12 cm above the
search coil. The detector will emit a low tone when detecting the sample, the target indicator
pointing to the trash symbol. The depth indicator displays the corresponding value.
5. Repeat the above test with a post-1982 dime (medium tone) and a quarter (low tone).
6. In ALL-METAL mode, move a test sample about 30 cm above the search coil. Slowly lower the
sample towards the search coil. The metal detector emits a tone and the depth indicator shows the
relative depth. All objects should generate the same tone.
10.3 Outdoor Testing and Practice
Pinpointing in Motion Mode
Accurate pinpointing takes practice and is best accomplished by cross-sweeping the target area.
1. Once a buried target is located and indicated by a
good tone response, continue sweeping the coil over
the target in a narrowing side-to-side motion.
2. Take visual note of the place on the ground where
the metal detector emits a tone.
3. Stop the coil directly over this spot on the ground.
4. Now move the coil a few times straight forward and
straight back.
5. Again, take visual note of the spot on the ground
where the metal detector emits a tone.
6. If needed, cross-sweep the target in an X-pattern at
different angles to zero in on the exact spot.
Coil Movement
When sweeping the coil, be careful to keep it level to the ground at
about 1 to 1.5 cm from the surface. Never swing the coil like a
pendulum. Doing so will cause false readings. When searching,
sweep the coil from side to side.
Swing the search coil slowly, overlapping each sweep as you move
forward. It is important to sweep the coil at a consistent speed
over the ground as you search. After identifying a target, the
sweeping technique can help in identifying both the location and
the nature of the target. If you encounter a weak signal, try
moving the coil in short and rapid sweeps over the target zone.
Most worthwhile objects will respond with a repeatable tone. If the
signal does not repeat after sweeping the coil directly over the
suspected target, it is more than likely trash.
Crossing the target zone with multiple intersecting sweeps at multiple angles is another way to verify the
repeatability of the signal and the potential of the buried object. To use this method, walk around the
target area in a circle, sweeping the coil across the target repeatedly, every 30 to 40 degrees of the
circle, about ten different angles as you walk completely around
the target. If a high-tone target completely disappears from
detection at a given angle, chances are that you are detecting
oxidized ferrous metals rather than a silver or copper object. If the
tone changes at different angles, you may have encountered
multiple objects. If you are new to treasure hunting, you may
want to dig all targets at first. With in-the-field practice, you will
learn to better discern the nature of buried objects by the nature
of the detector's response.
You may encounter some false signals as you proceed. False signals occur when the detector beeps but
no metal target is present. They can be induced by EMI, oxidation or highly mineralized ground soils. If
V. 02 – 15/07/2015
CS400
11 ©Velleman nv