IN
THE
FIELD
TECHNIQUES
-
No-
motion
Pinpoint
-No-motionPinpointIn the PINPOINT 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 PINPOINT button.
Pinpoint is used to find the exact location of a target which was previously located and identified using the discrimination mode. As this mode does not require motion over the target, the user can move the coil more slowly and then narrow the detection field when near the target.
How to Pinpoint
Position the searchcoil an inch or two above the ground, and to the side of the target. Then press PINPOINT. Now move the searchcoil slowly across the target, and the sound will communicate the target’s location. As you sweep from side to side, and hear no sound at the ends of the sweep, the target is located in the middle of that zone, where the sound is loudest. If the sound is loud over a wide area, the buried object is large. Use Pinpoint to trace an outline of such large objects.
Narrow It Down
To further narrow the field of detection, position the searchcoil near the center of the response pattern (but not at the exact center), and press PINPOINT again. Now you will only hear a response when the searchcoil is right over the top of the target. Repeat this procedure to narrow the zone even further. Each time you repeat the procedure, the field of detection will narrow further.
Consider Purchasing a Pinpointer
When you kneel down to unearth an object, you may find it frustrating as the object can appear exactly like the surrounding soil. You may hold the object in your hand, and find it necessary to pass a handful of dirt over the searchcoil to see if it contains metal. An easier way is to use a handheld pinpointer. It is a
22
