| 摘要 |
A calibration apparatus for a hand-held locating device (7) has at least one first coil configuration (1a) having a first measuring range (2′) and a second coil configuration (1a′) having a second measuring range (2a′), in which measuring ranges (2a, 2a′) homogeneous alternating magnetic fields can be generated in a specifiable ratio with respect to the strength of the magnetic fields. The coil configurations (1a, 1a′) are arranged a specifiable distance apart so that the magnetic fields can be detected simultaneously by means of at least two aerials of the locating device (7) which are arranged at a fixed distance. The specifiable ratios define true distance parameters.
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