2nd Edition 2nd Edition - Aspen Electronics

Timer, Frequency Counter, CalibratorsCNT-81, Timer Counter & CNT-85, Counter• CNT 81: 11 Digits Per Second Resolution.• Choice of Rubidium or OCXO Reference.• 8GHz Input Option.CNT-85CNT-81MeasuringModesFrequency A, B, CFrequency BurstPeriod AFrequency RatioTime Interval A-BPulse Width AV-Max, V-MinV P-P, A, BInputs A & BAnalogue Low Pass Filter, ADigital Low Pass FilterInput CFrequency RangeOption 20 CNT-81 Input Voltage RangeOption 10 CNT-85Input COption 13Input AInput BInput C (option)ResolutionInput AInput BInput CRangeResolutionRangeRangeResolutionRangeResolutionRangeRise & Fall Time APhase A Relative B RangeResolutionDuty Factor A RangeTotalise A, B RangeModesRangeFrequency RangeSpec. ResolutionCouplingImpedanceMax. Ch. Timing Diff.Max. SensitivityAttenuationManual TriggerAuto TriggerImpedanceVoltage Protection LevelConnectorInput Voltage RangeImpedanceConnectorUp to 300MHzUp to 100MHz100MHz ~ 2.7GHz (Option 20)300MHz ~ 8GHz (Option 13)11digit/s1ms1ms50ms3.3ns ~ 10 10 s11 digit/sA/B, C/B: 10 -9 ~ 10 150ns ~ 10 10 s50ps (1ps average)3ns ~ 10 10 s50ps (1ps average)3ns ~ 10 10 s-180° ~ +360°0.01°0.000001 ~ 1.0000000 ~ 10 17 ,0 ~ 10 10 in A-B ModesA Gated by BA Start/Stop by BManual Gating A minus BTimed Gating A minus B-50 ~ +50VUp to 100MHz1.25mVAC or DC1MΩ//15pF & 50Ω500ps20mVrms,