Reed relay technology not only is the technology of choice when in the high speed fast digital pulse arena, it also is ideal when working with high voltages and high pulsed currents. Cable testers, for instance, need to check wire to wire isolation where very high voltages are used to test and guarantee that no flaws exist in multiple parallel wire configurations. These require high voltage reed relay matrices to switch the voltages in a sequential manner. When testing high power semiconductors, high voltages and high pulsed currents are necessary to verify that the semiconductors can meet their high power requirements. Reed relays are the design-in choice for switching these high voltages and currents.