Field Techniques, Retuning, Temperature Change

INTHEFIELDTECHNIQUES

-No-motionmodes

In the No-Motion All-Metal Mode, coil sweep technique is not important. Rather, user retuning is critical.

The detector does not automatically adjust to changing ground and environmental conditions; the operator is required to make the adjustment. If the detector sounds a constant tone over all areas of the ground, retune the detector by pressing the GroundTrac button.

RETUNING

Keep the coil still, just above the ground surface, and press the GroundTrac button. Make sure that the spot on the ground you chose for tuning did not contain metal; pass over the area with the coil again to insure that the detector does not emit a tone.

TEMPERATURE CHANGE

If the detector moves from one temperature environment to another, or if the temperature changes, you must retune the detector until the temperature stabilizes. If you move from a cooler to a warmer environment, the detector may emit a constant tone; if so, retune. If you move from a warmer to cooler environment, the detector may lose sensitivity; if so, retune.

PINPOINTING

How To Pinpoint Targets Using The ALL-METAL Mode

When you’ve discovered a target you wish to dig, do the following:

1. Hold the searchcoil about half an inch above the ground, off to the side of where you think the target probably is.

2.Tap the ALL METAL touchpad button. This will put you into the All Metal Pinpoint mode. NOTE:

unlike the other modes, this mode does not require the searchcoil to be in motion to detect a target.

3. Lift the searchcoil slightly, and pass it over the target. The sound will be loudest over the center of the target.

To Narrow It Down Further:

4.Now that you know about where the target is, again lower the searchcoil to about half an inch above the ground, near the center of the target but not right over the top. Tap the button again. The sound will instantly go away.

5.Lift the searchcoil slightly and move it horizontally over the target. The audi- ble response zone will be much narrower. If you move the searchcoil around right and left and also forward and back, making an “X” pattern over the tar- get, you can determine the location of the target usually within an inch or two. NOTE: if at any time it seems like the signal may be drifting, just tap the

Ground-Trac button. This restores the signal to its zero level.

Detection Field

The No-Motion Mode’s detection field depends on the size of the target.

Large Objects

After detecting a target, lift the coil off the ground to a distance where you hear the faintest tone. Move the coil over the ground at this height. If the tone does not fade, you have detected a large or irregularly shaped object. Outline the object with slow coil movements.

If you can outline an area larger than the size of the inside coil, you then have a large target, or several targets.

Large objects can be detected when they enter the range of the outside coil.