Abstract: A system for testing lightning pin injection Tests (indirect lightning effects) simultaneously on multiple pins of an equipment under test (EUT). A plurality of impedance-balancing elements which receive the source signal and generate multiple test input signals. Respective impedance-balancing elements are configured such that each of the test input signals meets test signal requirements defined in a test scenario. The multiple test input signals are output through the impedance-balancing elements, which serve to provide a balanced current at each individual corresponding pins of the EUT under test, when the test on the EUT begins.