Delta 4000 owner manual Audio Target Identification, Tones identify targets as follows

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)

LOW TONE MEDIUM TONE HIGH TONE

Nails & Small Gold

Pull Tabs, Nickels, Smaller &

Larger Gold, Zinc Pennies

(Post 1982), Many screw caps

Copper, Silver & Brass

Copper Pennies (Pre 1982)

Audio Target Identification (ATI) classifies metals into three categories.

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