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AUDIO TARGET IDENTIFICATION
While the LCD (Liquid Crystal Display) is very accurate in identifying
buried objects, the user in the field does not always maintain the display
screen in his field of vision. Therefore, we have incorporated an audio
feedback mechanism to alert the user to the nature of buried objects.
This audio feedback system first alerts the user to the presence and
classification of objects, whose nature and location can be confirmed
using the LCD display.
The detector will sound three different tones. These three tones
correspond to the three target categories depicted on the LCD display.
LOW TONE
Ferrous objects, such as iron and steel, will induce a low tone.
Small gold objects can also induce a low tone.
MEDIUM TONE
Pull-tabs, newer pennies (post-1982), larger gold objects, zinc,
small brass objects, and most bottle screw caps will induce
medium tones. Many recent vintage foreign currencies will
induce medium tones, including loonies & toonies.
HIGH TONE
Silver and copper coins, larger brass objects, older pennies (pre-
1982), and highly oxidized metals will induce high tones.
Quarters, dimes and other precious coins fall into this category.
Audio Target Identification (ATI) classifies metals into three categories.
LOW TONE
Nails, Bottle Caps,
& Small Gold
MEDIUM TONE
Old & New Pull Tabs, Zinc US Pennies
(Post 1982), Nickel, Larger Gold
Objects, Pennies, Loonies & Toonies.
HIGH TONE
Copper, Silver & Brass
Copper Pennies (Pre 1982)
