Manual
1. Once you’ve located a target, pinpoint its exact
location as in the “Pinpointing” procedure. Since
accurate ID is dependent on accurate pinpointing, it
is recommended that you always press the PINPOINT
button rather than try to pinpoint your target in either
the Autotune or Target ID mode.
2. Once you’ve pinpointed your target, release the
PINPOINT button. If you’re searching in the Autotune
mode, switch over to DISC = 0. If you are already
in the Target ID mode, just leave the DISC control
where it is.
3. Move the coil just enough, left-right-left, across the
target to get a good signal. The meter needle should
lock onto a target classication, which in turn will
agree with the audio response (one of 4 tones)
4. If you no longer get a meter reading or audio
response once you’ve pinpointed the target, then
you’re over something that falls below the DISC
setting you’ve chosen and the CZ-3D is rejecting it.
5. Here’s a quick and easy way to tell the difference
between a small shallow piece of foil and a gold
ring (or other possibly good target) without digging:
if you get a good solid, “FOIL” ID, set the search
coil down close to the target and then whip it
rapidly across the target just once with what can
best be described as a ick of the wrist. If the target
disappears, it’s probably a small shallow piece of
foil. If not, dig it up—it could be that gold ring you’re
looking for. Practice this over some foil until you get
the hang of it.
6. Don’t be afraid to turn your sensitivity down. True,
the higher the sensitivity, the deeper your CZ-3D will
go and the more you’ll nd. But that’s only under
optimum conditions. If you’re getting a lot of false
signals caused by electrical interference, ground
mineralization or dense trash, lower your sensitivity. If
you have to back it down to 4, 3 or even 2 to eliminate
the falsing, do it. That’s what your SENSITIVITY control
is for. You’ll be surprised at how much you might nd
in an area that would otherwise be unsearchable
at high sensitivity levels.
TARGET IDENTIFICATION
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1. Set as in the “Turn-On” procedure, making sure the
DISC control is at AUTOTUNE and the SENSITIVITY
control is set so you can just barely hear a threshold
hum. Hold the search coil parallel to and 6 to 12
inches over the ground and at least three feet away
from any metal objects. Do not use the PINPOINT
button during any part of this procedure.
2. Lower the coil to an inch or two above the ground
and then quickly raise it. Note that as you lower the
coil, the tone disappears, then gets louder as you
raise it and nally returns to normal when you stop it
6 to 12 inches above the ground. Conversely, if you
set the GROUND control to 1, the threshold hum will
get louder as you lower the coil and disappear when
you raise it.
3. Your objective now is to adjust the GROUND control so
that there is no change, or only a minimum change
in the threshold hum, as you move the coil up and
down. Start by lowering the GROUND control to 9.
Lower the coil and raise it again. One of three things
will happen to your theshold hum:
A It will fade again as you lower the coil and increase
as you raise it. Continue to lower the ground
balance setting in small increments until the
threshold hum remains the same (or changes very
little) as the coil is lowered and raised.
B It will get louder as you lower the coil and go silent
as you raise it. Increase the ground balance level
(rotating the control counterclockwise) in small
increments until there is little or no change in the
threshold level.
C The hum will remain the same, or if it changes
slightly, the change is the same whether you lower
or raise the coil. Your CZ-3D is properly ground
balanced, and you are ready to begin your
search. You have gone past the correct ground
balance setting.
4. With a little practice, you should be able to ground
balance quickly by “bobbing” the coil up and
down in a continuous movement as you adjust the
GROUND control with your thumb.
"BOBBING" THE SEARCH COIL METHOD