Bounty Hunter Time Ranger Manuel du propriétaire télécharger pdf (Page 15)

Numeric Target I.D. Readout

This table shows the numbers typically associated with certain

commonly encountered nonferrous metal targets. Older silver US

coins usually read about the same as their modern clad equivalents.

Modern quarter-sized dollar coins like the Susan B. Anthony and the

Sacajawea read about the same as a quarter. Most Canadian coins

which are somewhat similar in appearance to U.S. coinage are minted

from a magnetic alloy which gives very inconsistent readings and may

same range as the modern U.S. $1 Eagle bullion coin.

foil from gum wrapper 1 - 12

U.S. nickel 5¢ coin 20 - 33

aluminum pulltab 29 - 50

aluminum screwcap 55 - 75

zinc penny (post-1982) 68 - 78

aluminum soda pop can 70 - 105

copper penny, clad dime 90 - 100

quarter 25¢ coin, clad 110 - 122

50¢ coin, modern clad 124 - 132

old silver dollar coin 130 - 140

US silver Eagle $1 coin 130 - 165

Probable Target ID fields

The Probable Target ID fields above the top of the LCD screen

represent the signal ranges produced by various coin and metal object

types. When a metal target is detected, the microprocessor analyzes

the signal and categorizes it based on what kinds of metal objects

usually produce that kind of signal. The microprocessor then lights

up an arrow along the top of the LCD screen which points to the

probable target ID field which corresponds to that signal category.

For instance, if the detected signal fits within the parameters

usually exhibited by zinc pennies and the electrically similar

aluminum screwcaps, the microprocessor may categorize the signal

as "zinc penny - aluminum screwcap". The LCD screen will then

point an arrow to the (Z-1¢ S-CAP) field above the LCD screen.

Above the specific target ID fields, there are two general fields, Gold

Range on the left and Silver Range on the right. Most silver jewelry

is larger and of higher conductivity alloy than most gold jewelry, so

silver jewelry will tend to fall to the right and gold to the left.

Since different metal objects can produce similar signals, and since

minerals in the soil can distort the signals, the probable target ID's

are just that-- probable. There is no way of knowing for sure what's

down there other than to dig the target up and see. Experienced

metal detector users have a rule of thumb-- "when in doubt, dig".

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 40 41

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Bounty Hunter Time Ranger Manuel du propriétaire Page 15