 The second floor of the building housed a large electromagnetically shielded room, supplied by Electromagnetic Filter Company of Palo Alto, California, which contained the data acquisition electronics, the Marx generator charging and firing control and field strength monitoring instrumentation.The data acquisition system consisted of a large number of state-of-the-art Tektronix 7912AD digitizers along with a large array of DEC PDP-11 computers.The pulse monitoring instrumentation consisted of a number of B dot and H field sensors mounted on the exterior of the wedge connected to oscilloscopes fitted with Polaroid o'scope cameras needed to capture the transient pulse data.