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 can sound four different tones, depending on the object
detected.
BASS TONE
Ferrous objects, such as iron and steel, will induce a bass tone.
The smallest gold objects can also induce a bass tone.
LOW TONE
Pull-Tabs, nickels & smaller gold
MEDIUM TONE
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.
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 four categories.
BASS TONE
Nails, Iron Objects,
& Smallest Gold Objects
LOW TONE
Pull Tabs, Nickels,
& Smaller Gold
MEDIUM TONE
Zinc Pennies (Post
1982), Larger Gold
Objects, Many screw
caps
HIGH TONE
Copper, Silver & Brass
Copper Pennies (Pre
1982)
12
9
DEFAULT OPERATION
The detector defaults to
ALL METAL
mode after powering on. In this
mode, all types of metals will be detected. An object’s probable
identification is indicated by the arrows at the top of the display. In
addition, the probable depth of coin-sized objects is indicated by the
large numeric indicator in the center of the display. All detected
objects will cause the depth indicator to illuminate. The depth
indication is not accurate for
larger objects; however, it will
provide accurate relative
depth indications. The
greater the distance an object
is from the search coil, the
greater its depth value.
DISC/ A-M Touch Pad
Pressing this touch pad will
cause the detector to toggle
between two operating
modes, DISCRIMINATION
and ALL-METAL. If the
detector is in the ALL-METAL
mode (the default mode), pressing the touch pad will change the
detector into DISCRIMINATION mode. If the detector is in the
DISCRIMINATION mode, pressing the touch pad will change the
detector into ALL-METAL mode.
DISCRIMINATION MODE
Discrimination is used to eliminate unwanted objects from detection.
To enter this mode, from ALL-METAL mode, press the DISC/A-M touch pad.
After pressing DISC/A-M, the detector will:
• Beep twice
• Display an "R" under the left-most segment, Iron
Ferrous objects will not be detected in DISCRIMINATION mode.
Heavily oxidized ferrous objects will sometimes, however, be
detected, usually with a high tone and an indication to the right of
the target identification scale.
BASIC OPERATION
(continued )
