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IN THE FIELD TECHNIQUES
- Pinpoint Mode
As your search takes you to different areas, verify the ground balance setting peri-
odically using the above procedure. Within a geographical area, ground condi-
tions can change. Varying elevation, proximity to water, and concentration of
rock, sand or clay can all affect ground condition and sometimes require recali-
brating with the ground balance knob.
• If the detector remains silent with the searchcoil 1/2 inch over the ground, no
further adjustment is necessary; the detector is
“GROUND BALANCED”
In 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.
RETUNING
Keep the coil still, just above the ground surface, and press the PINPOINT 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
Detection Field
The No-Motion’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 object can be detected when they enter the range of the outside coil.
Small Objects
After detecting a target, hold the searchcoil above the
ground, at a distance where you hear the faintest tone.
While maintaining the coil at this height above the
ground, move the coil from side-to-side. Note the spot
where the tone is loudest. Then move the coil toward
the ground to zero-in on the target’s location.
A coin-size object will be detected when the object enters the range of the inner coil.