It can not only measure DC current magnetic field but also alternative current magnetic field. This system has small volume, high capability, and wide frequency range.

本智能磁场测量系统既适合测量直流磁场，又可测量交变磁场，且体积小，性能高，适用频率范围宽。

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The results show that permeability decreases and cut-off frequency increases with the increase of DC bias. Permeability varies linearly in the certain range.

研究表明：偏置直流的增加，降低了材料的磁导率，提高了截止频率，并且在一定偏置直流范围内，磁导率呈线性变化。

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