16
SEARCHING
Good search techniques are as important to your success as having 
a good detector.
1.  Make sure your CZ-3D is properly ground balanced and the MODE 
switch  is  in  the proper position: SALT for wet ocean  beaches, 
ENHANCE for just about every other situation.
2.  Decide  which search  mode you’re  going  to use, Target ID or 
Autotune. Recommended starting point: Target ID mode with the 
DISC control set at “4”.
3.  Set your SENSITIVITY control. Only experience will tell you how to 
set it in every situation but you’ll probably want to run it as high as 
you can. Recommended starting point: SENSITIVITY 5 . If you’re in 
the Autotune mode, set it so that you can just barely hear a slight 
audio hum.
4.  Adjust your VOLUME control. Remember that a setting above 5 will 
amplify the response of faint targets so they sound like a shallow 
or large target. Some searchers prefer not to use it above 5 so the 
audio response will give them some idea as to the depth and/or 
size of the target. Recommended starting point: VOLUME = 10. If 
you’re using headphones, adjust the headphone volume controls 
for a comfortable, not-too-loud response over loud targets.
5.  Once you’ve got your controls properly set, begin your search 
by  walking  slowly  and  sweeping  the  search  coil  in  a  tight 
semicircle. 
6.  Keep the coil parallel to the ground and as close to the ground as 
practical. This is extremely important for maximum coverage and 
depth. If you’re searching on a lawn, you may set the coil right on 
the grass and slightly “scrub” it.
7.  Overlap your sweeps by at least 50%. Remember that your coil’s 
search pattern is conical and if you don’t overlap each sweep 
you’ll miss the deeper targets.
8.  Search  in  a methodical  manner. Pay close  attention to where 
you’re going and where you’ve been.
9.  Keep the search coil moving at a comfortable rate. Remember 
that the CZ-3D is a motion detector and responds only when the 
coil (or the target) is moving (except in the Pinpoint mode).
10.  Take your time. If you walk too fast you can’t overlap your sweeps 
and you’ll miss a lot of ground. If you swing your coil too fast you 
lose some sensitivity to deep and/or small targets.
11.  Figure 7 on the next page shows the CZ-3D search coil pattern 
and how it is affected by sweep speed, ground mineralization 
and search mode.