Delta 4000 Metal Detector - Manual (Page 14)

14
OPERATION and CONTROLS
cont.
MODE SELECTIONS
There are three selections under the MODE section of the display.
• Press to toggle between DISCRIMINATION and ALL METALS.
• Press at any time to activate PINPOINT mode.
1. DISCRIMINATION Mode
This mode is the default mode, and requires the searchcoil to be in motion in
order to detect and identify targets. This is the mode most commonly used for
continuous searching. In this mode, targets are identified with distinct tones,
and are classified in categories at the bottom of the display. A two-digit
numerical value, on a scale of 10 to 99, is displayed in the middle of the
screen. The depth range of the target is also displayed at the right of the
display. All MENU items can be selected and customized in this mode.
2. ALL METALS Mode
All Metals modes of operation are, like discrimination, motion modes of
operation. The visual target identification system will identify targets, similar to
the discrimination mode, except that target rejection is not possible in any All
Metals mode.
There are two different All Metals Modes, identified as A1 and A2.
The best All Metals mode for you to select depends on the ground conditions
where you are hunting.
A1 has more default sensitivity, about an inch more on a coin-sized object, but
will sound off over more highly mineralized ground.
A2 is more tolerant of ground conditions, but will be less sensitive over less-
mineralized ground. The two modes also have different audio characteristics.
A2 will provide better target separation, as the sound covers a “tighter” area as
you cross over a target.
In both A1 and A2, all types of metal objects induce a sound which varies in
pitch and volume according to the size of the object and its distance from the
coil. For example, a larger object close to the coil will induce a loud, high-
pitched tone. A small object, farther from the coil will induce a lower-pitch
lower-volume tone.
Use an ALL METALS mode for maximum sensitivity to buried targets.