User manual C-SCOPE VLF TR 2200-3000 ADC

[. . . ] The ground effect in the discrimination modes is minimal on most sites but should it become intolerable the operator can reduce the ground effect by reducing the sensitivity. The C-Scope VLF TR 2200-3000 ADC is a professional model and is manufactured to the highest standard to give you the maximum performance. The machine has been designed for easy operation, but there are several ways of using the detector. In order to get the best out of your machine and ensure correct operation it is important to spend some time before going out with your detector studying these instructions. [. . . ] Silver paper is not rejected on D1 but it is on D2 as are larger iron objects. D3 rejects most kinds of 'junk' with suitable adjustment of the reject control ring-pulls can now be rejected. But some useful objects are also rejected, so use D3 with great caution. The more discrimination you use the worse will be the ground effect. On dry sand this may not be a problem but on other soils ground effect may give false indications of objects. The volume will change as the head is brought near the ground. To minimise this problem proceed as follows: - Use the smallest amount of discrimination which wi II work on the site. - Set the tuning with the head held at the normal search height, e. g. , an inch above the ground level. - Keep the head exactly at the correct height. If you still have problems, turn down the sensitivity. The detector sti II operates even with sensitivity set to 0 and ground effect is reduced. Many experienced users will choose the most suitable mode for a site, which will either by Normal or D1 and dig all positive signals that occur in the mode chosen. Below are pictorial illustrations of the reactions of the VLF TR 2200-3000 ADC in the various modes to different target objects. These are of course generalised for simplicity and it is essential that these instructions are read in full to appreciate the detector's reaction to the individual types of coins or metals. Turn it anti-clockwise through one right angle, making the slot vertical. The 'screw' - actually a stud - can now be pulled out, allowing the control box to be opened to reveal the batteries, which are held in place by spring clips. Make sure the detector is switched off at the volume control before replacing batteries. The snap connectors should be removed from the ends of the batteries before tak ing the batteries out. Note that there is a 'right way round' for the snap connector; it will not stay put if applied the wrong way. It does not matter which connector goes to which battery so long as it is connected correctly). OPERATING NOTES In the normal mode ordinary soil has very little effect. Indeed, it can be made to have no effect at all, by means of one simple adjustment which you will quckly learn to carry out. Once the ground has been 'eliminated' in this way you will find that there is no change of sound as the head is lowered towards the ground or raised from the ground. The only thing that affects the sound is buried objects capable of conducting electricity. [. . . ] Tactics will be decided by the type of site - it is more profitable to scan a small area thoroughly, than to conduct a haphazard search of the total site However, when the site is too far away for you to make several return visits, a plan should be adopted which gives maximum site coverage, at the same time as indicating the most likely areas for detai led search. One method is to divide the area into large squares by use of a 'criss-cross' search pattern. Starting along the left hand perimeter, search in a straight line, marking the location of any finds with small sticks, until you have covered the ~I"-----B - - - - - - - - - - I pI An area ten foot square is marked out around the find located by criss cross search. This is then divided into strips which are carefully searched. Distance A width of the detectors pick-up area. Distance B length of a comfortable sweep. 8 , I . I '/. ' . I . , I . [. . . ]