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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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S-Rod Locking Collar Silver Button Searchcoil Cable 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 bu
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ASSEMBLY Assembly is easy and requires no tools. 1 Position detector upright. l LOCKING COLLAR 2Rotate the LOCKING l INTERNAL COLLAR fully in a counter CAM LOCK clockwise direction. SILVER BUTTON 3 Insert your finger inside the l MIDDLE STEM tube and make sure the INTERNAL CAM LOCK is S-ROD flush with the inside of the S-ROD MIDDLE STEM tube. 4 Insert the LOWER STEM into l the S-ROD. 5 Rotate the LOWER STEM until the SILVER BUTTON locates in the hole. l 6 Twist the LOCKING COLLAR fully in the cl
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BATTERIES Use ALKALINE batteries only. To install the batteries: 1Remove the l battery cover by disengaging the clip at the back. 2 Align the polarity l 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, l 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) • A Nickel II. Position the Detector a. Place the detector on a table, with the searchcoil hanging over the edge. (or better, have a friend hold the detector, with the coil off the ground) b. Keep the searchcoil 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 l
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Q UICK-START DEMONSTRATION VI. Wave the Nail over the Searchcoil a. The Nail will not be detected. b. The Nail has been "Discriminated Out." VII. Press the “DISCRIMINATION- s ” touch pad twice. Five “R”s are now displayed. VIII. Wave all objects over the Searchcoil 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 DISCRIMINATION s tou
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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 (left) and BATTERY (right) 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 he
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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 acc
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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
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BASIC OPERATION 4) Press ZAP. An "R" appears under the segment to be eliminated. 5) Pass the searchcoil 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 after detecting the object. The ZAP control eliminates the most-recently detected object category from detection. The category eliminated is indic
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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 Please refer to the display on your such as a nail, or a more valuable historic iron relic. detector and reference the TARGET I.D. categories below applicable to FOIL: Aluminum foil, such as a gum your model (not all detectors wrapper, will register as foil. A small include all of these categories). broken piece of pull tab may also register here. READING THE DISPLAY The Liquid Crystal Display (LCD) shows 5¢: Most newer pull-tabs from beverage the PRO
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DEPTH AND TARGET DISPLAY (motion modes only) accurate readings, multiple targets, and DEPTH INDICATOR: The Depth Indicator is accurate for highly erratic readings which evidence coin-sized objects. It indicates the trash or irregularly shaped objects. depth of the target, in inches. Large and irregularly-shaped objects will THREE DIGIT TARGET INDICATOR yield less reliable depth readings The three digit target indicator, in the middle of the LCD display, provides a When passing over an object, th
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(motion modes only) 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 searchcoil creates its own magnetic field and acts like an antenna. If your detector beeps erratically when the searchcoil is motionless, the unit is probably detecting another electromagnetic field. Common sources of EMI are electric power lines, both suspended and b
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(motion modes only) IN THE FIELD TECHNIQUES PINPOINTING IN MOTION MODES COIL MOVEMENT When swinging the coil, be Accurate pinpointing takes practice and is best accomplished by careful to keep it level with the “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 th
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IN THE FIELD TECHNIQUES (motion modes only) Swing the searchcoil slowly, to verify the repeatability of the overlapping each sweep as you signal, and the potential of the buried target. To use this move forward. It is important to sweep the coil at a consistent method, walk around the target area in a circle, sweeping the speed over the ground as you coil across the target search. After identifying a repeatedly, every 30 to 40 target, your sweep technique degrees of the circle, about ten ca
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IN THE FIELD TECHNIQUES (motion modes only) You may encounter some false coil’s narrower detection field signals as you proceed. False can better distinguish between signals occur when the detector two objects in close proximity. beeps, but no metal target is present. False signals can be Also maintain the searchcoil induced by electromagnetic positioned just above the interference, oxidation, or surface of the ground, without highly mineralized ground making contact with the soils. If the det
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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 slats 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. Begin wit
