User manual C-SCOPE CS330

[. . . ] This leaves only the search-head on the stem which reduces fatigue on the arm. Rotary control switches the detector on/off and adjusts the sensitivity. The area on the scale around the control marked in green is the setting recommended for most ground conditions. Ground containing mineralisation and some beach situations may cause instability or false signals requiring a reduction of the sensitivity level. [. . . ] This is a useful facility which allows you to trace around the edges of a signal to identify large pieces of iron. (Note: very large pieces of iron, such as discarded agricultural machinery and iron stakes tend to give positive signals even when the detector is set to high discrimination settings). Set to `0' there is no discrimination, ie all metals are detected. Set within the green area (1-4 on the scale) signals from most small iron rubbish are ignored, ie there is no audio signal. The discrimination level can be increased (4-10, red area on the scale) so that the signals from more categories of metal object are ignored. ' (see `Notes on Sensitivity, Ground Effect and Discrimination'). Assembling the CS330 The stem height adjuster should be slackened to allow the lower stem to enter the upper stem section. The search-head lead may then be wound around the stem as shown in the photograph. A search-head lead which is not well secured to the stem could move about causing false signals. There are slots in the lower stem plastic section into which the lead can be fitted. When the search-head lead is fitted correctly, the stem adjusting device can be tightened at a height suitable for the user. Adjust the position of the search-head so that it is parallel to the ground when the user is in a normal standing position. Friction of the head lugs against the neoprene washers keeps the search-head in position. Increasing the discrimination level will eliminate signals from a wider range of metal objects which are likely to be rubbish. When the detector gives a signal, move the search-head to the approximate area where the signal was heard, press the pin-point button (using your thumb is best) and move the search-head carefully around. The strongest signal will occur directly below the centre of the search-head. Dig a neat hole by cutting around the signal position with a sharp edged trowel and remove a divot of earth which might now contain the metal object. Run the detector over the area again in pin-point mode to see if the metal object is still in the hole or in the piece of earth which you have just removed. Dig some more and sift through the earth until you find what you are looking for. The use of headphones will increase battery life and make it easier to discern faint signals. Do not touch anything you suspect might be live ammunition - inform the police. If you find anything which looks like it could have historical significance, report it to your local museum. Acquaint yourself with any laws relating to the use of metal detectors particularly if you want to go detecting in countries other than the UK. Sensitivity, ground effect & discrimination You will be able to get more performance out of your detector if you understand the relationship between three aspects of detector operation - sensitivity, ground effect and discrimination. If you increase the power of a metal detector too much the ground itself is detected and false signals make the detector difficult to use. [. . . ] As the control is turned clockwise the signals from more types of metal likely to be worthless can be eliminated. However, the discriminate control must be used with care because some objects which could be valuable have similar electrical characteristics to rubbish items as far as the detector can tell. Higher levels of discrimination also have the effect of reducing the depth of detection. For these reasons it is best to keep the discrimination setting as low as possible. CS330 Effect of discriminate control position Detector care The CS330 is a robust design, however the control box should be treated with similar care as any electronic product. [. . . ]