Pinpoint; How To Pinpoint - Fisher Labs F22 Owner's Manual

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MENU
Press and hold

PINPOINT

searchcoil over a metal target will induce sound. The screen will blank except for
the 2-digit number display indicating target depth in inches. The scale is calibrated
to coin-sized objects. The depth indication will vary as you scan your target. The
target center is where the smallest depth indication displays.
Tone and pitch of the audio will vary as the coil passes over the target. This
audio can yield more information about the target's shape and size and also
find its exact location to facilitate extraction. The target center is where the
loudest and highest pitch is indicated.

HOW TO PINPOINT

After you have identified a target, move the coil to one side of the target, be
sure you are not over any metal, then press-and-hold the pinpoint button and
rescan the target.
1. Press and hold
Pinpoint as follows:
2. Position the searchcoil just barely off the ground and to the side of the
target.
3. Now move the searchcoil slowly across the target.
The target is located directly under where the sound is loudest and the depth
indication is smallest.
1. For large targets you can narrow the response further by positioning the
Narrow It Down:
center of the searchcoil near the center of the response pattern, but not
directly over the center.
2. Release Pinpoint.
3. Immediately press-and-hold again.
4. Repeat this narrowing procedure to narrow the field of detection further.
Note: Depth indication is less accurate after narrowing.
COIL DRIFT
If you plan to use PINPOINT for continuous searching, realize that drift will
occur over time, causing the detector to gain or lose sensitivity. Periodic
retuning of the detector is required to minimize drift; release and press
periodically to retune.
1. Sweep over target in narrowing side-to-side patterns.
PINPOINTING USING MOTION MODES (without using
2. Visualize a "center line" on the ground where "beep" occurs.
3. Rotate 90° and now sweep along this imaginary line.
4. Visualize a second "center line" on the ground where "beep" occurs.
5. The "X" center pinpoints the target location.
to activate. Searchcoil motion is not required; a motionless
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