Table of Contents
Advertisement
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.
12
L L O O W W T T O O N N E E
Nails, Bottle Caps,
& Small Gold
M M E E D D I I U U M M T T O O N N E E
Old & New Pull Tabs, Zinc US
Pennies (Post 1982), Nickel,
Larger Gold Objects, Pennies,
Loonies & Toonies.
H H I I G G H H T T O O N N E E
Copper, Silver & Brass
Copper Pennies (Pre 1982)
Audio Target Identification
(ATI) classifies metals into
three categories.
Advertisement
Table of Contents
