Teseq, a provider of instrumentation and systems for EMC emission and immunity testing, has introduced a new magnetic field coil that generates fields up to 1200 A/m during magnetic field testing. The INA 703 is designed for testing to IEC 61000-4-8 (supply frequency magnetic fields), IEC 61000-4-9 (pulsed magnetic fields) and IEC 61000-4-10 (oscillatory magnetic fields) standards. It can be used with medical equipment, military, avionics, aerospace and industry applications.
By using a multi-turn (37 turn) configuration, the INA 703 is able to generate higher field levels of up to 1000 A/m using a programmable power source rated for ≥ 30 A like the ProfLine Conducted Immunity Test Systems. This enables testing with a current THD (total harmonic distortion) of <8%, as required by IEC 61000-4-8, that can only be met with a low distortion sine wave from a programmable AC source.
For testing to IEC 61000-4-9, the INA 703 can be used with any classic combination wave generator, including Teseq’s NSG 3040 or NSG 3060 along with the INA 752 pulse wave shape adapter.
When connected to an appropriate slow oscillatory wave generator, the INA 703 easily enables testing to IEC 61000-4-10.