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TRANSISTORIZED_CHRONOTRON_MEASURES_COAX_DELAY

2016-05-08 14:31  
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TRANSISTORIZED_CHRONOTRON_MEASURES_COAX_DELAY
Start switch triggers avalanche transistor Q1, generating millimicrosec pulse that travels down unknown cable and returns to trigger new pulse. Digital counter is used to mesaure prr, which is proportional to cable delay. Q2 shapes counter pulse.-E. F. Laine, Getting Subnano-second Precision in Coax Cable Delay Measurements, Electronics, 36:5, p 39-41.