14
15
NOTE: Depth value indication of same target in air is different from that of under
the ground.
Indoor Testing
Supplies Needed
- A Nail
- A Quarter
- A 1¢ (post-1982)
1. Remove any metal items that you
may be wearing.
2. Turn on the detector.
3. Place the detector on a wooden or plastic table and adjust the search coil so the
flat part points upwards toward the ceiling.
5. When in DISC, NOTCH or AUTO-NOTCH mode, evenly sweep the nail 10-12cm
above the flat face of the search coil. The detector will emit a low tone when
detects the sample, and the arrow pointing to nail in target indicator illuminates.
The DEPTH indicator also displays corresponding value. Repeat the above test
with a 1¢ (post-1982). Detector sounds medium tone this time, and target indicator
arrow points to 1¢. While In the test of 25¢, detector emits high tone and arrow
points to 25¢.
NOTE: When the sample is a coin, lay the flat side of the coin parallel with the flat
face of the search coil and sweep it evenly, so that the detector can find the target
more easily. Sweeping with the side of the coin parallel with the search coil will cause
test error and target arrow might be flash and jump.
5. In ALL METAL Mode, move a test sample over the flat side of search coil at a
higher location (above than 1 foot) slowly close to the search coil. The detector
emits a tone when detects the target, and DEPTH indicator shows relative value.
All samples sound one tone in this mode.
Outdoor Testing
Pinpoiting (non-motion mode)
Accurate pinpointing takes practice and is best
accomplished by crossing sweep the target area.
1. Once a buried target is indicated by a clear tone
response, continue sweeping the coil over the
target in a narrowing side-to-side motion.
Wrong
Correct
2. Take visual note of the place on the ground where the “beep” sounds.
3. Stop the coil directly over this spot on the ground.
4. Now move the coil straight forward and straight back towards you a couple
of times.
5. Again make visual note of the spot on the ground at which the “beep” sounds.
6. If needed, cross sweep the target in “X” pattern at different angles to “zero in” on
the exact spot on the ground at which the “beep” sounds.
Coil Movement
When swinging the coil, be careful to keep
it level with the ground about 1-1.5 cm
from the surface. Never swing the coil like
a pendulum. Raising the search coil while
sweeping or at the end of a sweep will
cause false reading.
When searching, it’s better you sweep the
search coil from side to side in an arc line of
7-8 cm motion.
Swing the search coil slowly, overlapping
each sweep as you move forward. It is
important to sweep the coil at a consistent
speed over the ground as you search. After
identifying a target, your sweep technique
can help in identifying both the location and
the nature of the target. If you encounter a
weak signal, try moving the coil in short, rapid
sweeps over the target zone. Such a short
rapid sweep may provide a more consistent
target identification.
Most valuable objects will respond with a
repeatable tone. If the signal does not repeat
after sweeping the coil directly over the
suspected target a few times, it is more than
likely trash metal.
Crossing the target zone with multiple intersecting sweeps at multiple angles is
another way to verify the repeatability of the signal, and the potential of the buried
target. To use this method, walk around the target area in a circle, sweeping the coil
across the target repeatedly, every 30 to 40 degrees of the circle, about ten different
angles as you walk completely around the target. If a high-tone target completely
