Fisher CZ-3D manual Recovery Tools, False Signals

RECOVERY TOOLS

A heavy duty blunt screwdriver, sturdy hunting knife, or garden trowel are commonly used. Made especially for the Hobby of Metal Detecting are several well designed sand scoops, trowels, and digging tools . See your local dealer for more information.

FALSE SIGNALS

A “False Signal” occurs when something sounds like a good target, but is not. Your CZ-3D does a great job of discriminating, but bad “targets” with similar electrical characteristics can fool it. Large pieces of trash or items very close to the search coil will occasionally sound “good”. Experience is the best teacher. As you accumulate more hours with your CZ-3D, you will soon learn how to distinguish “false signals”. Initially when you pass over a target, and get a good response, you will find that crossing over the target once or twice more, the signal will break up or completely disappear.

The following are some sources of false signals and the solution:

1.Electrical Interference: Caused by radio and TV towers, power lines, or other metal detectors.

SOLUTION: Move farther away from the source, slow down the sweep speed, or lower the sensitivity.

2.Highly Mineralized Soil: Soils with a high iron or salt content. SOLUTION: Reduce the sensitivity, raise the discrimination level or readjust the ground adjust setting..

3.Extremely Trashy Areas: May result in a lot of “chatter”. SOLUTION: adjust the discrimination level or reduce the sensitivity. In some areas, a smaller coil will be beneficial to better achieve target seperation.

4.Metal Interference: The CZ-3D will pick up metal ABOVE and on the SIDE of the coil, as well as under. WATCH FOR: Large metal structures, your digging tool, metal in shoes and your coil cable

hanging loose above the coil. 24