User manual C-SCOPE VLF.TR 990 B

[. . . ] They are designed with lasting quality in mind, high technology input, and above all, value. ' The only way to realise this value and quality is to carefully study and understand this instructi0'1 booklet. You will then be able to obtain all of the advantages designed into. your detector. It is also strongly recommended that you experiment with the detector operation indoors in air with test samples, in order to learn to identify and understand the detector's capabilities and responses. [. . . ] Ensure that the correct tuning level has been set and then commence searching. sweeping in rhythmic arcs from one side to another, and advancing about six inches after each sweep. Every metal object within range of the detector will give an audio response, and the user should first concentrate on recognising variations in audio signal level. Once a target has been recognised the user can then consult the meter response. With practice the recognition of a signal and its analysis become synchronised and it is possible to disregard signals caused by iron and continue sweeping. A signal caused by 'iron will give an audio signal, but the meter will swing left towards the REJECT end of the meter scale. The meter channel is not as sensitive as the audio channel and some signals will give a clear audio response without a noticeable meter indication. The golden rule should always be: If it is not rejected by a clear negative response the target should be investigated. However to optimise on the range of the detector and its analytical abilities, follow this procedure: (1) (2) (3) (4) After receiving a target response when sweeping note exact location of target. Move search head two to three feet away from the object. Place the search head on the ground and retune the detector by operating the ADC switch. Keeping the search head on the ground sl ide the head back over the target object. This method should increase the meter response because the search head is nearer to the object, the detector is at its optimum tuning level, and ground effect cannot interfere with the meter channel because the gap between the search head and the ground is constant, i. e. D2 or D1 are the recommended mode settings. The qiscriminate level can also be adjusted to suit the particular conditions. Follow Steps 1·3 "Setting the Tuning Level of the Detector. " 4c. Keep it at a steady height above the ground and p. nsure the tuning level is set correctly by operating the ADC switch to the left or right and then release it. To operate in a Discriminate Mode set the Function Control to the relevant D level. and then press the ADC switch to the right and then release it. the detector is being operated in the Discriminate Modes on an inland site. it will be necessary to balance the Sensitivity Level to reduce the ground effect. I n practice th is means setting it to the highest level possible. which will of course depend on the degree of mineralisation. and how capable the operator is at keeping the search head level with the ground. A sacrifice in Sensitivity Level will drastically reduce the ground effect. [. . . ] (5) Old fords or bridges. (6) Areas exposed at low tide where eddy action has been taking place. Tidal rivers are partic;ularly interesting, as once you have found a good site or spot where coins have collected due to the currents, you can search the area well one day and still return at a later date for more rewarding finds. Rivers tend to sort out their load and distribute it according to weight along the bank in places like those itemised above, Beacluls Beaches are, without a doubt, the favourite haunt of the average British metal detective. At one time or'another, almost everybody has made the journey to the coast. [. . . ]