Delta 4000 Metal Detector - Manual (Page 16)

16
TARGET IDENTIFICATION
In DISCRIMINATION mode, targets are identified both audibly and visually as
follows:
1. Different pitch tones for different types of metals
2. A 2-digit target I.D.
3. An illuminated icon within the target category best describing it
AUDIO TARGET IDENTIFICATION:
Tones identify targets as follows:
LOW TONE
Ferrous objects, such as iron and steel, like nails and tin cans.
Smallest-sized gold objects and some steel bottle caps
MEDIUM TONE
Foil, pull-tabs (some new style), nickels, steel bottle caps.
Newer pennies (post-1982 are minted from zinc)
Larger gold pieces, small brass objects, and most bottle screw caps.
Most recent-vintage non-US coins.
Pull-tabs (old style, some new style)
HIGH TONE
Silver and copper coins, large brass objects
Older pennies (pre-1982 were minted from copper)
Dimes, quarters, half-dollars, silver dollars
Susan B. Anthony and Sacajawea dollar coins
Flattened aluminum cans (with a stronger signal than a coin)
Audio Target Identification (ATI) classifies metals into three categories.
LOW TONE
Nails & Small Gold
MEDIUM TONE
Pull Tabs, Nickels, Smaller &
Larger Gold, Zinc Pennies
(Post 1982), Many screw caps
HIGH TONE
Copper, Silver & Brass
Copper Pennies (Pre 1982)