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OWNER’S MANUAL
The
Discovery 3300
is a professional metal
detector. While the most
difficult aspects of metal detecting
have been automated, it is a
sophisticated electronic device which
requires an understanding of some basic
features and metal detecting concepts.
If you do not have prior experience with a
metal detector, we strongly recommend that you:
1) Adjust the Sensitivity to a low setting in the event
of false signals. Always begin use at a reduced
sensitivity level; use at full sensitiv
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TABLE OF CONTENTS Terminology . . . . . . . . . . . . . . . . . . . . . . . . . .3 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5 Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Quick-Start Demo . . . . . . . . . . . . . . . . . . . . .7-8 Basic Operation . . . . . . . . . . . . . . . . . . . . .9-12 All Metal . . . . . . . . . . . . . . . . . . . . . . . . .10 Discrimination . . . . . . . . . . . . . . . . . . . . .10 Notch . . . . . . . . . . . . . . . .
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TERMINOLOGY The following terms are used throughout the manual, and are standard terminology among detectorists. ELIMINATION - Reference to a metal being "eliminated" means that the detector will not emit a tone, nor light up an indicator, when a specified object passes through the coil’s detection field. DISCRIMINATION - When the detector emits different tones for different types of metals, and when the detector "eliminates" certain metals, we refer to this as the detector "discriminating" amon
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ASSEMBLY Assembly is easy and requires no tools. 1 Position the lower stem (the straight tube) ● with the silver button toward the back. Using the bolt and knurled knob, attach the search coil to the plastic extension protruding from the lower stem. 2 Press the button on ● the upper end of the lower stem, and slide the lower stem into the upper stem. Adjust the stem to a length that lets you maintain a comfortable upright posture, with your arm relaxed at your side, and the search coil paralle
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ASSEMBLY Adjusting the Arm Rest Most people will find the standard position of the arm rest very comfortable. Very large forearms and short forearms (particularly children’s arms), can be accommodated by moving the arm rest forward. The arm rest is adjustable to three positions. To adjust, remove the screw from the underside, then press the silver button and move the arm rest to one of the alternate positions. If you cannot fully depress the button with your finger, use a narrow object, such as
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BATTERIES Use ALKALINE batteries only. To install the batteries: 1Remove the ● battery cover by disengaging the clip at the back. 2 Align the polarity ● of the batteries correctly, with the positive "+" toward the coil plug connection, as indicated by the + and – indicators on the housing. 3 Insert (2) 9-Volt ALKALINE batteries, with the contacts pointed inward, ● and press down on the back of the batteries to snap them into place. Some brands of batteries will require moderate force to clear
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Q UICK-START DEMONSTRATION I. Supplies Needed • A Nail • A Quarter • A Pull-Tab from a beverage can • A Zinc Penny (dated after 1982) II. Position the Detector a. Place the detector on a table, with the search coil hanging over the edge. (or better, have a friend hold the detector, with the coil off the ground) b. Keep the search coil away from walls, floors, and metal objects. c. Remove watches, rings and other jewelry or metal objects from hands and wrists. d. Turn off appliances or lights tha
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Q UICK-START DEMONSTRATION (continued) VI. Wave the Nail over the Search Coil a. The Nail will not be detected. b. The Nail has been "Discriminated Out." VII. Press the “DISCRIMINATION- ▲ ” touch pad twice. Five “R”s are now displayed. VIII. Wave all objects over the Search Coil The Nail and Pull-Tab will not be detected. The other objects will be detected with their own distinctive tones. IX. Press the NOTCH touch pad. A flashing “R” will appear under the 5¢/PT segment. X. Press the DISCRIMINAT
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BASIC OPERATION POWERING UP Press the POWER touch pad. • The detector will beep 4 times • All display segments will illuminate momentarily •The SENSITIVITY and BATTERY indicators will stay illuminated MOTION and NO-MOTION MODES Depending on the operation mode selected, the Discovery 3300 detects metal both with the coil in motion, or with the coil motionless. In the PINPOINT mode of operation, metal is detected with the coil motionless over the ground. This no-motion operation helps to locate t
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continued BASIC OPERATION ALL METAL MODE (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 rectangular segment indicators on the left side of the display. All detected objects will cause the depth indicator to illuminate. The depth indication is not a
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continued BASIC OPERATION disappear, thus returning to detection the objects which fall into the corresponding categories. Discrimination Mode is a fixed-start-point elimination system. Objects are cumulatively eliminated as the level of discrimination increases. NOTCH MODE To selectively eliminate a category from detection within the metallic spectrum, use the NOTCH Mode. Technical Note: The NOTCH touch pad causes the status of an "R" segment to toggle between ON and OFF. To use the NOTCH Mod
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continued BASIC OPERATION 3) Notice the Target Indication Note: You can only ZAP objects that register under the seven left-most segments (from Iron to Zinc). 4) Press ZAP. An "R" appears under the segment to be eliminated. 5) Pass the search coil over the same object again. The undesirable object is eliminated from detection The ZAP control is easy to use in the field. As you are detecting, and encounter an object which you wish to eliminate from detection, simply press the ZAP touch pad af
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(motion modes only) 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. T
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(motion modes only) DEPTH AND TARGET DISPLAY Objects in this category could be worthless READING THE DISPLAY scrap, or a more valuable iron relic. The Liquid Crystal Display (LCD) shows 5c/PT: Nickels and most newer pull- the PROBABLE identification of the tabs(those that stay attached to the targeted metal, as well as the PROBABLE can) will register here. depth of the target, in inches. PT(pull-tabs): Pull-tabs from older The detector will register a repeating, beverage cans will register here
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(motion modes only) DEPTH AND TARGET DISPLAY THREE DIGIT TARGET INDICATOR buried objects. The target value can vary The three digit target indicator, in the middle of the LCD display, provides a each time the coil passes over the target, specific target value to help identify buried depending upon the angle of the object targets more accurately. With practice in and the distance from the coil. As a the field, you will learn to associate target starting point, refer to the table below. values wit
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SENSITIVITY ADJUSTMENT ELECTROMAGNETIC INTERFERENCE The principle use for the Sensitivity Control is to eliminate Electromagnetic Interference (EMI). A hobby metal detector is an extremely sensitive device; the search coil creates its own magnetic field and acts like an antenna. If your detector beeps erratically when the search coil is motionless, the unit is probably detecting another electromagnetic field. Common sources of EMI are electric power lines, both suspended and buried, motors, and
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(motion modes only) IN THE FIELD TECHNIQUES PINPOINTING COIL MOVEMENT When swinging the coil, be Accurate pinpointing takes practice careful to keep it level with the and is best accomplished by “X-ing” the target area. ground about 1/2 inch from the surface. Never swing the coil like 1. Once a buried target is indicated a pendulum. by a good tone response, continue sweeping the coil over the target in a narrowing WRONG side-to-side pattern. 2. Take visual note of the place on the ground where t
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(motion modes only) IN THE FIELD TECHNIQUES Swing the search coil slowly, respond with a repeatable tone. overlapping each sweep as you If the signal does not repeat move forward. It is important after sweeping the coil directly to sweep the coil at a consistent over the suspected target a few speed over the ground as you times, it is more than likely search. After identifying a trash metal. target, your sweep technique can help in identifying both the Crossing the target zone with location an
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(motion modes only) IN THE FIELD TECHNIQUES angles, you may have You will be surprised just how encountered multiple objects. much trash metal and foil you If you are new to the hobby, will find in some areas. The you may want to dig all targets trashiest areas have been at first. With practice in the frequented by the most people, field, you will learn to better and frequently hold the most discern the nature of buried promise for finding the most objects by the nature of the lost valuables.
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- Pinpoint Mode IN THE FIELD TECHNIQUES GROUND BALANCING Before using the PINPOINT mode, it is necessary to “Ground Balance” your detector, this ground balancing adjustment offsets the effects of minerals and salts in the ground. To GROUND BALANCE your detector: 1. Using the ALL-METAL mode, find a patch of ground which is free of metal objects. You will use this section of ground to test the detector. The presence of any metal objects in this area will interfere with this procedure. 2 2.Begin w
