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TEKNETICS
DISCRIMINATION MODE
The Discrimination Mode is used to eliminate from detection trash metal objects such as nails,
aluminum foil, or pull-tabs. The searchcoil must be in motion for metal objects to be detected.
Discrimination incurs some loss of sensitivity to small or deep objects.
This controls the electronic gain, and is adjustable from 1 to 99. Unlike the All Metal Mode, the
SENSITIVITY
Discrimination Mode is designed to operate silently. If you hear noise when there is no metal present
or when the searchcoil is not in motion, reduce the Sensitivity setting until the machine goes quiet.
NOTE: there is no interaction between the sensitivity settings of the All Metal and
Discrimination Modes.
This is adjustable from 0 to 80, and controls the range of objects to be eliminated from detection
DISCRIMINATION LEVEL
(silenced, discriminated out or rejected). Objects with numeric values below the selected
discrimination level will not be detected. NOTE: the numerical range that pertains to each class of
object is printed at the top of the visual display. To eliminate iron, a setting of 40 is usually about
right. A setting of 80 will eliminate aluminum trash and zinc pennies, but nickels will also be lost.
This menu selection offers the user a choice among several different methods of audio
NUMBER OF TONES (# OF TONES)
discrimination to accommodate a variety of search conditions and personal preferences.
These methods differ in the way the signals are processed for analysis, and in the number of
audio tones used to identify different target types.
The detector has two ways of processing signals for analysis — continuous and sampled.
The detector processes a continuous signal response throughout the duration of the sweep of the
Continuous Processing
searchcoil over the target. All characteristics of the target are audibly communicated to the user.
Continuous processing gives a good feel for the size, depth, and shape of the target. Continuous
processing is preferred, for example, for relic hunting, especially in plowed or rocky ground.
Sampling takes a snapshot of the signal at its strongest point. This compromises the feel of a
Sampled Processing
continuous response, but provides for more accurate Target Identification. Sampling also
eliminates confusion caused by changes in tones during the sweep over the target. Sampling
is preferred, for example, when coinshooting in areas where there is aluminum trash.
The "# OF TONES" selections are:
Discrimination is continuous, not sampled. Good for use in plowed or rocky ground.
1: Single Medium pitch tone.
Large shallow objects will produce a squeal. The variable audio pitch provides you more
1+: Medium-to-High pitch tone
information about the detected object, but some people find the sound on strong signals too
annoying. Good for use in plowed or rocky ground.
Similar to 1+, except that iron produces a low-pitched tone regardless signal strength. The
2+: Two tones.
discriminator is continuous. However, the iron tone feature relies on a combination of
continuous and sampled processing. Useful if you want to hear all targets.
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Comprehensive Operating Manual & Guide to Metal Detecting
varying in proportion to target signal strength.
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