... test coils 4.Test: magnetic parameter, Br, Hcb, Hcj, (BH)max, Hk and so on DX-4DMT Automatic Hysteresis Graph Test System ... DX-4DMT automatic hysteresigraph system accords with the standard permanent magnet test system, GB3217-92, used to ... graph and form. There are Chinese or English character, system of unit, single picture or multi-picture to be chose ...