Constant Fraction Discriminator

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$Refractive Index and Dispersion: Prism Spectrometer$

CFD Functional Schematic1.5 nsdelayZero crossingcomparatorDQPMTsignalfractionCFD ratefeedbackf2VVariable gainCLKRProgrammablewidth<strong>Discriminator</strong>thresholdadjustmentThresholddiscriminatorTime walkoptimizationCoincidenceresolving timeadjustmentJune, 2001 CFD design review 26
CFD board schematicJune, 2001 CFD design review 27
Page 3 and 4: 1 pe pulse: measurementsJune, 2001
Page 5 and 6: Night Sky Background (1)June, 2001
Page 7 and 8: Statistical characteristics ofNSB a
Page 9 and 10: Threshold discriminator rate(positi
Page 11 and 12: CFD in fADC channelTheoryPracticeby
Page 13 and 14: CF discriminator:rate vs. offsetJun
Page 15 and 16: CFD:HIGH state time fraction vs. ra
Page 17 and 18: CF discriminator time walkJune, 200
Page 19 and 20: CF discriminator dead timeJune, 200
Page 21 and 22: CF discriminator time dispersionJun
Page 23 and 24: CF discriminator time dispersionJun
Page 25: Original CFD board designby Jim Buc
Page 29 and 30: f2V 2MHz inputJune, 2001 CFD design
Page 31 and 32: Variable Gain CircuitJune, 2001 CFD
Page 33 and 34: Variable Gain (50 MHz)June, 2001 CF
Page 35 and 36: L1 Width circuitJune, 2001 CFD desi
Page 37 and 38: CFD board pinoutsP in Na m e /F u
Page 39: CFD BudgetTotal(500)Total(3000)500p

Constant Fraction Discriminator

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