Harbor Freight Tools 43149, Assembly And Operating Instructions Manual

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Outdoor Testing (continued)
The detector will respond strongly when it detects most valuable metal oljects. If the signal does
not repeat after being swept over the target a few times, the target is probably junk metal.
False signals can occur from electrical interference, large, irregular pieces of junk metal, or finding
trash on the ground. False signals usually occur broken or are non-repeatable.
After finding a metal item, wait a few seconds after the tone stops before continuing; this allows
the detector time to reset. You can also press the red button on the handle to return the pointer to the
center of the viewmeter.
Fine Tuning The Metal Detector:
Once you practice with the unit, you can fine tune it to make it more selective in what is found.
Adjusting SENSITIVITY
To adjust the search coil’s ability to detect objects at different depths in the ground, rotate SENSI-
TIVITY between MIN and MAX . For maximum detection depth, leave SENSITIVITY set as high as
possible. If the Metal Detector begins to “chatter”, decrease SENSITIVITY until the noise stops.
Adjusting GROUND
For accurate operation, it is critical that you take the time to correctly set GROUND. GROUND
tunes out false signals from mineralized soil.
To set GROUND :
1. Met MODE to VLF and lower the search coil to 1/2
to 2 inches above the ground.
2. If the pointer swings to the right, turn GROUND to the left.
If the pointer swings to the left, turn GROUND to the right.
3. Lift the search coil about 12 inches from the ground and press the red button on the handle. The
pointer will return to the center. Repeat these three steps until the pointer stays close to the center each
time you lower the search coil to the ground.
After setting GROUND the Metal Detector is ready for the soil type at that particular site. It will
not need to be reset until you move to a new location.
Adjusting DISCRIMINATION
Discrimination is the Metal Detector’s ability to differentiate between types of metal. This setting
determines whether the detector will distinguish between differnet types of ferrous and non-ferrous
metals. If
MODE is set to TR2 , start with DISCRIMINATION set to mid-range. While the Metal
Detector is being used, adjust DISCRIMINATION to the best position. As you set it higher, the
Figure 19
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