= reJ;)©®frJ~ METAL DETECTOR/TREASURE SEEKER NlETADECir OPERATING INSTRUCTIONS I ,
CONTENTS A. Assembly B. Batteries C. Programmed Method of Operation D. The Controls And What They Do E. ADC Analytical Method of Operation F. Use In The Field G. Care & Maintenance INTRODUCTION The C-Scope METADEC II is the culmination of many years of research by both electronic engineers and metal detector enthusiasts to produce a detector with high performance, that both a novice or an experienced user can harness to the full, simply and effectively.
DIAGRAM 1. A. B. C. D. E. F. A. Lower Stem Middle Stem Upper Stem Search Heed Fastener Search Heed Lugs Friction Boot G. H. I. J. K. Knurled Nut lil Knurled Nut (ii) Cable Din Plug Din Socket ASSEMBLY INSTRUCTIONS To assemble the METADEC IIconnect the stems to the search head. First connect the lower stem (Al. which is already inserted into the middle stem (Sl. to the search head.
B. BATTERIES The METADEC II is powered by either: a) 12 HP7 Penlight Batteries (not supplied) in 2 six-pack battery holders (supplied with detector) or b) 2 rechargeable packs (an optional accessory). HP7s are standard batteries and are available from garages, department s~ores, etc. Rechargeable batteries in two packs, together with a charger are available as a C-Scope Accessory. It is advised that to begin with standard HP7s are used.
Bmery Check 81 Charging As a guide to battery condition a Battery Check facility is provided. To check the batteries switch on the detector at the ON/OFF Tune Switch (Q) and tune the detector by turning this control clockwise, with the Memory Retune Buttons (vi) or (vii) depressed. Once the detector is set at the central Tune position release the Retune Button and then depress the Battery Check tv) switch. If the needle on the meter swings into the bold red sector the batteries are in good condition.
C. PROGRAMMED METHOD OF OPERATION After assembly and banery insertion the METADEC II is now ready for operation. The METADEC II is extremely simple to operate, and ,is programmed and designed in such a way that the operator is not required to adjust discriminate or ground exclude levels. All that Is required is to turn the detector ON at the ON/OFF Tune Switch (0) and tune the detector to threshold, as described below, and then programme the mode of operations.
· D. CONTROLS AND WHAT THEY DO The controls are divided into two areas. Those on the Main Control Box (W) and those on the Meter Console X (see Diagram 3l. On/Off Tune Switch IQI- See Tuning P.6. Function Switch/Ground Exclude lSI This control selects for the type of site. The METADEC II can be used as a professional BEACH or IN LAND detector even though the ground conditions are totally different.
Sensitivity (R) The SENSlTl V lTY CONTROL regulates the sensitivity of the detector to drift, instability etc., as well as to metal objects. The recommended starting point is O. By increasing the Sensitivity by tuning this control into the + sector the detector will be more prone to drift, erratic signals, ground interference, etc. Where there is no ground effect or outside inter ference the Sensitivity Control can be operated at higher levels.
Sensitivity (A) The SENSITIVITY CONTROL regulates the sensitivity of the detector to drift. instability etc.• as well as to metal objects. The recommended starting point is O. By increasing the Sensitivity by tuning this control into the + sector the detector will be more prone to drift. erratic signals. ground interference. etc. Where there is no ground effect or outside inter ference the Sensitivity Control can be operated at higher levels.
In practice the operator concentrates on careful sweeping of the search head in large arcs, keeping the search head near to the ground and level. When a signal is received, the operator can then take the search Iclead away from the influence of the object, hold it steady at the operating height, carefully retune the detector and then carefully re-scan across the object to analyse and pinpoint the object.
Sensitivity (R) The SENSITIVITY CONTROL regulates the sensitivity of the detector to drift, instability etc, as well as to metal objects. The recommended starting point is O. By increasing the Sensitivity by tuning this control into the + sector the detector will be more prone to drift, erratic signals, ground interference. etc. Where there is no ground effect or outside inter ference the Sensitivity Control can be operated at higher levels. But when the signal becomes unsteady or erratic.
If the site has no Ground Effect, when the search head is lowered the meter signal will not fall or rise irrespective of where the manual ground exclude is set. tn this case the Normal Inland Ground setting may be used. This setting causes most normal size iron to be totally ignored. (i.e. There is no negative signal.l Only good objects register. - DIAGRAM 5. Inland Site with Ground Effect Method 1. II Any position, overridden by PRE-8ET GROUND Iil --.
DIAGRAM 7. Beach Site with Ground Effect Method 1. Any position overriden by PRE-8ET GROUND iii II Any position overriden by AUDIO andMETER DISCRIM. --------r"F. Tune with RETUNE (vi) or (viii depressed as per TUNING (P. 6.)--t-+-..:L.. When AUDIO or METER DISCRIM are ON these buttons function solely as RETUNE BUTTONS and either may be used. - DIAGRAMS. Beach Site with Ground Effect Method 2. Set as per Manual Ground Exclude (P. 7.
or if Manual Ground Exclude is preferred -OFF DIAGRAM 10. Heavily Contaminated Site Method 1. Any position overriden by AUDIO and METER DISCRIM. Either set as per Manual Ground Exclude (P. 7.1 or engage PRE-5ET iii Sensitivity Low o to -5 Range Tune When AUDIO or METER as per TUNING (P. 6.1 DISCRIM are ON th8S8 buttons function solely One of the 85 RETUNE BUTTONS Inland Settings and either may be used. II DIAGRAM 11. Heavily Contaminated Sites Method 2. Sensitivity LoVlf - - - - .
thereby appearing larger to the detector. The worst conditions for detecting are on loosely compacted or freshly dug ground or when the object has only recently been buried. In these conditions detection range will be reduced. 90% of all artefacts are found within 6" of the surface. N.B. Adverse soil conditions can reduce depth of detection by more than half.
The Importance of the Right Approach Treasure hunting can be a profitable and rewarding hobby, if approached in a patient and diligent manner. Time spent researching to locate a worthwhile site for a search can be time wasted if your search is hasty and erratic. To achieve maximum results it is important then. to decide on your approach to any particular site in advance of the actual search. Tactics will be decided by the type of site - it is more profitable to scan a small area thoroughly.
Sweeping - For Example: For extremely small object searching, such as coins, rings, nuggets, etc. lower the search coil to within one inch of the ground. Sweep the coil from side to side in a straight line in front of you. Keep the coil at a constant height as you sweep from side to side. Move the coil at the rate of one foot per second (see Diagram 131. After you have become familiar with the instrument the sweep rale may be increased to two feet per second.
G. 3. Help keep Britain tidy - and help yourself. Bottle tops, silver paper and tin cans are the last things you should throwaway. You could well be digging them up again next year. Do yourself and the community a favour by taking all the rusty junk you find to the nearest litter bin. 4. Do not trespass. Ask permission before venturing on to any private land. 5. Report all unusual historical finds to the local museum and get expert help if you accidentally discover a site of archaeological interest.
(et Interchange batteries and ensure connections are correct and secure. Battery life can vary tremendously between makes, therefore your 'new' batteries may already be insufficiently powerful to run your detector. Oscillating Signal Accompanied by Slight Meter Fluctuetlon (a) Caused most often by outside equipment such as fluorescent lights, taxis, radios, power lines, and other metal detectors working nearby. Intermittent Sound from Speaker lal This could be due to poor battery connections.
