概要：安诺尼NF系列手持式频谱仪如何在1Hz-30MHz这么宽的频段测试1pT的磁场，秘密在于我们内置的**3D磁场探头。
How we can the SPECTRAN NF measure magnetic fields down to 1pT over a wide frequency range of 1Hz to 30MHz? The secret is our patented and award winning super small 3 axis (isotropic) air coil with homogeneous center. And YES, if you look at the winding structure, it was a nightmare to get a manufacturer to build this little beast „smile“-Emoticon
But finally we solved all manufacturing problem and it is now included for years in all SPECTRAN NF units and a lot of OEM test and measurement tools out there...
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