Westek Electronics have released the new Langer NNB21 Line Impedance Stabilisation Network (LISN) suitable for automotive conducted interference testing in accordance with CISPR 25/ISO 7637. The standard is applicable to OEM device conducted emission testing including capture of pulses down to the nano-second level.
The Langer NNB21 LISN isolates the DC power source for the device being tested and permits both uni-polar and bi-polar (differential) emission testing. The effective frequency range of the NNB21 is from 100kHz to 1GHz, and two internal attenuators (one in each line) of 10dB permit reliable measurement of RF emission. The Langer NNB21 LISN can handle a maximum supply current of 10A and a maximum supply voltage of 50V.