| 摘要 |
A device for calibrating and testing ring-shaped current clamps comprises a calibration housing with an outer conductor enclosing the current clamp, and an inner conductor passing through the current clamp. The outer conductor encloses the current clamp on all sides and is adapted to the shape of the current clamp. The calibration housing also exhibits, with the current clamp accommodated therein, an impedance ZL which is predetermined by a measuring system. These measurement make it possible to measure the frequency response of the current clamp precisely, up into the GHz range. The calibration housing exhibits transitions which are conically tapered towards the connections (6, 7).
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