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Comprehensive Operating Manual & Guide to Metal Detecting
PRO-ARC
22
PRO-ARC
Comprehensive Operating Manual & Guide to Metal Detecting
21
Controls (continued)
The PRO-ARC has two controls on the front panel, MENU and SETTINGS.
MENU Pushbutton (Red button on right of the front panel)
Push the MENU button to:
1.
Step through the menu selections on the display. With each push of the button, the next
menu selection will be highlighted. The SETTINGS knob then allows you to change
values for the highlighted selection.
2.
Recall the last setting which you adjusted. After you have adjusted a setting, an indicator
will remain highlighted next to this menu selection. One push of the button will recall that
selection and display the stored value.
This recall function is useful for a value you want to adjust frequently, such as the ground
balance setting. In order to adjust a stored value with the SETTINGS knob, you must first
press the MENU button to reactivate the user interface.
3. Press-and-Hold the MENU button to temporarily switch to the dE (default) process, only
when operating in the bP or CL process.
60
Capabilities and Limitations (continued)
STEEL BOTTLE CAPS & FLAT IRON TRASH
Modern motion-type Target ID metal detectors usually have difficulty consistently identifying steel
bottle caps and other flat iron trash objects. Double-D searchcoils also have a reputation for having
difficulty distinguishing steel bottle caps from coins, and for being unable to eliminate steel bottle
caps from detection. If you are searching in an area where there are many steel bottle caps or other
flat iron trash targets, minimize the amount of unnecessary digging with the following methods:
1.
SEARCH WITH THE bc (BOTTLE CAP) PROCESS using the PROCESS # feature.
This method calculates visual ID differently in order to cause steel bottle caps to read
lower on the scale, and to register less consistently. A desirable object such as a coin
will usually produce numeric values that are fairly consistent in both directions of
sweep. See PROCESS # under the Discrimination Mode section of this manual.
2.
SEARCH WITH THE dP PROCESS. This method calculates visual ID differently in
order to cause steel bottle caps to ID lower on the scale and to register less
consistently. It also produces more audio clues to the character of the target.
3.
LIFT THE SEARCHCOIL. Within 2 inches of a Bi-Axial searchcoil, the crossed
magnetic fields of the Double-D construction can produce anomalous responses. If the
object feels shallow (strong signal, narrow response, or multiple responses in a single
sweep) and is giving consistent high readings like a coin, raise the searchcoil 2 to 3
inches and try again. A coin will almost always continue to give consistent readings
unless it is right next to an iron object. A steel bottle cap that is at least 3 inches
33
Comprehensive Operating Manual & Guide to Metal Detecting
PRO-ARC
22
PRO-ARC
Comprehensive Operating Manual & Guide to Metal Detecting
21
Controls (continued)
The PRO-ARC has two controls on the front panel, MENU and SETTINGS.
MENU Pushbutton (Red button on right of the front panel)
Push the MENU button to:
1.
Step through the menu selections on the display. With each push of the button, the next
menu selection will be highlighted. The SETTINGS knob then allows you to change
values for the highlighted selection.
2.
Recall the last setting which you adjusted. After you have adjusted a setting, an indicator
will remain highlighted next to this menu selection. One push of the button will recall that
selection and display the stored value.
This recall function is useful for a value you want to adjust frequently, such as the ground
balance setting. In order to adjust a stored value with the SETTINGS knob, you must first
press the MENU button to reactivate the user interface.
3. Press-and-Hold the MENU button to temporarily switch to the dE (default) process, only
when operating in the bP or CL process.
60
Capabilities and Limitations (continued)
STEEL BOTTLE CAPS & FLAT IRON TRASH
Modern motion-type Target ID metal detectors usually have difficulty consistently identifying steel
bottle caps and other flat iron trash objects. Double-D searchcoils also have a reputation for having
difficulty distinguishing steel bottle caps from coins, and for being unable to eliminate steel bottle
caps from detection. If you are searching in an area where there are many steel bottle caps or other
flat iron trash targets, minimize the amount of unnecessary digging with the following methods:
1.
SEARCH WITH THE bc (BOTTLE CAP) PROCESS using the PROCESS # feature.
This method calculates visual ID differently in order to cause steel bottle caps to read
lower on the scale, and to register less consistently. A desirable object such as a coin
will usually produce numeric values that are fairly consistent in both directions of
sweep. See PROCESS # under the Discrimination Mode section of this manual.
2.
SEARCH WITH THE dP PROCESS. This method calculates visual ID differently in
order to cause steel bottle caps to ID lower on the scale and to register less
consistently. It also produces more audio clues to the character of the target.
3.
LIFT THE SEARCHCOIL. Within 2 inches of a Bi-Axial searchcoil, the crossed
magnetic fields of the Double-D construction can produce anomalous responses. If the
object feels shallow (strong signal, narrow response, or multiple responses in a single
sweep) and is giving consistent high readings like a coin, raise the searchcoil 2 to 3
inches and try again. A coin will almost always continue to give consistent readings
unless it is right next to an iron object. A steel bottle cap that is at least 3 inches
