Deteknix Quest Pro, Руководство пользователя

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PROGRAMMING
Core Technicians You Need to Know
Gain or so called sensitivity, adjustable from 1 to 99, is often simplistically described as the setting which adjusts the device’s
power level. As its name indicates, it actually determines the device’s sensitivity level. It reacts after receiving a signal via the
receiver coil. In the presence of electrical interference, high ground mineralization, or variable ground mineralization,
operation will usually be too noisy (wobbly and erratic sound from the speaker) if the sensitivity is set too high. At settings
above 90, the internal circuit noise of the machine will probably be audible. The sensitivity level setting is largely a matter of
personal preference. However, if you cannot hear at least some noise, the smallest or deepest objects will not be detected.
The most commonly used sensitivity levels range from 60 to 90. It may be necessary to reduce the level if there is too much
interference, as is often the case near overhead or buried power lines, fences, radio-relay stations, mobile telephones,
computers, televisions, etc.
Threshold or hum level. It is adjustable from -9 to +9. For maximum ability to hear the weakest signals, adjust this background
hum level high enough so that it is barely audible while the detector is in use in the field. To eliminate the weakest signals,
adjust the hum level into the negative region, which will allow the machine to run silently if the sensitivity is not set too high.
Discrimination (0~80 adjustable) mode is used to eliminate from detection trash metal objects such as nails, aluminum foil,
or pull-tabs. The search coil must be in motion for metal objects to be detected. Discrimination incurs some loss of sensitivity
to small or deep objects.
The conductivity scale (0 to 99) for metal targets shown above the LCD screen will help you better understand the
discrimination range and its limits, and see how it corresponds to the digital display of target conductivity on the controller.
Increasing the discrimination value enables you to gradually reject any target whose conductivity is lower than the setting. For
example, if you tune the discrimination level to 10, you will reject iron with a value of between 0 and 10. If you tune it to 40
you will also eliminate small pieces of aluminium foil whose conductivity is less than 40. If you wish to reject other rubbish with
higher conductivity, such as pull tabs from aluminium drinks cans, lead shot or copper hunting cartridges (whose conductivity
is 60-75), you must also be prepared to accept the elimination of certain good metals with similar conductivity.