User manual C-SCOPE CS1220XD

[. . . ] CS1220XD - RAPID GET YOU GOING INSTRUCTIONS Assemble and adjust for length (Twist surplus lead around stem). Set the MODE SELECT (bottom right) to METER AUDIO DISC. Set SENSITIVITY fully anticlockwise to the BATTERY CHECK position. The meter will indicate in the right hand green sector if the batteries are OK. [. . . ] It is recommended that all objects that are not rejected should be recovered, i. e. if the meter needle does not dip or the audio pitch is inconclusive, then find the object. Iron, unlike a coin, occurs in a multitude of shapes and sizes and as a result it is possible that large pieces of iron may give a positive reading. Iron in the shape of nails or pieces of wire also may be present on the surface of a site. In this case anomalies in discrimination may occur. Anomalies or confusing signals can occur in the first few inches away from the search head, and are typically characterised by a double signal from the same object, usually iron, which often ranges from a strong positive to a strong negative signal. To overcome these problems simply raise the search head, retuning if necessary, and rescan until a clear signal of rejection or acceptance is obtained. 13 Detection Range Your CS1220XD is a top performance detector but adverse soil conditions can significantly reduce the depth of detection. Detection ranges will vary depending on the size of the object, the length of time an object has been buried, and the type of ground the object is buried in. The best ground conditions are well compacted soils and coins can be found at the greatest depth if the object has been buried for some time and the coin has interacted with the salts in the ground, 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. Determining the Target Size and Depth An operator who is familiar with his instrument will be able to do an excellent job of determining object size, shape and depth before he digs. This technique is learned from careful analysis of the meter and audio signal coming from the detector. Each time a signal is heard, listen for any peculiar characteristics it may have, determine over how large an area you get a detector signal, and try to 'outline' the object before you dig. After digging up the object, compare the object size, shape, depth and position in the ground with signal information you received before digging. After careful analysis of many signals you will learn to 'read' the hidden target before digging. Detecting To test for the type of signal you will get, take a coin or metal object and with the detector set up on a table tuned as previously described, move the metal object towards and across the search head. You will note that the volume will increase quickly as the metal object passes across the search head, with the loudest sound occurring when the search head is immediately centred over the metal object. As the object passes beyond the search head the sound will quickly fade. Since the detectors employ a Total response search head, the object can be detected across the full width, back to front, of the search head. [. . . ] The working life of your detector will be shortened by careless use or neglect of the unit. Think of your detector as a scientific instrument. Your detector is designed to withstand rugged handling on any terrain, but misuse or lack of due attention will tell in the end. After using your detector in a hostile environment (salt water, sand, etc. ) The exterior parts should be flushed with clean fresh water, paying particular attention to the head and stems, then carefully wipe dry. 19 TROUBLESHOOTING (a) Check the condition of batteries under load using the meter. [. . . ]