SPI-Pulse (trademark) 25. Transmission Line Pulser Operating Manual
SPIRE CORP BEDFORD MA
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The 50-ohm SPI-PULSE 25 transmission line pulser is designed to generate high-voltage, fast-risetime pulses over a range from 0 to 1,000 volts without internal adjustment. Pulse width, amplitude, and repetition rate are individually controlled by the operator. The instrument can be triggered internally or externally, either by single shot or repetitively up to 275 hertz. The SPI-PULSE 25 uses a low-reactance, high-voltage switch packaged in a 50-ohm geometry to discharge a transmission line charge store. Discharging the line into a matched, 50-ohm load results in a step-function wave of one-half the stored voltage traveling down the transmission line in transit time tau, reflecting off the open end of the transmission line, and returning at the same amplitude in a second period of transit time tau. Thus a square pulse with an amplitude one-half that of the storage voltage and a width of 2 tau is produced. Typical applications for this high-performance pulser include laser diode pulsing in fiber optic communications research, timing signal generation, current injection testing to establish EMI burnout levels, and high-voltage instrument calibration.
- Test Facilities, Equipment and Methods
- Electricity and Magnetism