Pulse calibration and characterization of the PBFA II data acquisition system

The data acquisition system for PBFA II at Sandia National Laboratories has 22 Tektronix 7912AD transient digitizers and will eventually have 144 LeCroy 6880 waveform recorders. Each recorder channel has at least 285 ft of coaxial input cable and various signal conditioning components. The signal conditioning components typically include some or all of the following: fixed or programmable attenuator, signal splitter, integrator, multiplexing switch, coaxial relay switch, and an isolating coupler for adding a fiducial timing signal. We also characterize all the hardware and software components associated with the waveform recorders as a system. 2 refs., 4 figs.