Downloads Join Mailing List Service Repair Dept. Symmetry would require a fast discharge of capacitors used to produce exponential tails. The critical issue in the PB-5 is to preserve exponential decay with a clean return to the baseline. Set the number of sweeps to 999, giving a run time of just over 24 hours. For unusually demanding needs, the measurement can be repeated for several days.
Short ramps allow good random statistics for all channels as long as many sweeps are made.
No, the clamp simply preserves the amplitude of the pulse when the tail time is long compared to the desired rep rate. This feature is accomplished by clamping the pulse to the baseline before the exponential decay is completed thus allowing the next pulse to start from the baseline rather than some point on the tail. It is recommended that the delay time be set to 3 or 4 us to allow a full recovery to the base line. Yes, a RS-232 port is available for this feature.