CNT-81 & CNT-81RTimer/Counter/CalibratorsBAEKDOOINTERSYSTEMSCO.,LTD.TEL: 02-579-9126~8FAX: 02-579-9129E-MAIL: sales@baek-doo.comHomepage: www.baek-doo.comCNT-81&CNT-81R Time/Counter/Calibrator , , time interval & phase . (Production test systems), R&D, calibration lab . < >ISO-9000Certified by CSA Certified by GOSTCE-markingEMCBest-in-TestAward"(T&MWorld1992,1997, 2005 and 2007) Fast: 8000 measurements/s High resolution: 1ps (time)11 digits/s (freq.), 0.001 (phase) Rubidium stability: 0.0001 ppmHightriggerresolution:1.25 mV Advanced arming/hold-offModulationDomainAnalysis SW EMC-immunity for noisyenvironments Ideal for fast test systems, R&Dand calibration laboratoires8GHzoptionformicrowave IRFtesting< >

Modulation Domain AnalysisFigure 1: The modulation domain (f vs. t) complementsthe time (V vs. t) and the frequency (V vs. f) domainsFigure 2: Jitter (rms and peak-peak) and noiseis quantified in distribution histograms.Figure 4: Linearity of frequency sweep can beverified in the modulation domain (frequencyvs. time).Figure 6: The 9 different pulse width clusters,corresponding to the 9 different pit lenghts(T3-T11) in a CD-recording.Figure 3: The FFT-diagram reveals the modu-lation frequency, whether intended or un-wanted.Figure 5: Repetitive samplings gives an effec-tive sampling rate of 10 Msa/s. This VCO has afrequency switching time of approx. 10.7 us.Figure 7: Zoom in on T3-cluster displays anrms-jitter of 13 ns, which is OK for an audio CD.The analysis PC-SW TimeView converts theCNT-81/CNT-81R to a high performance mod-ulation domain analyzer. In the modulation do-main you can view rapid frequency changes vs.time, e.g. modulation, sweep, freqiency setting,channel hopping etc.The 16-bit DOS program is standardly includedwith all CNT-81/81R.The 32-bit Windows program is an optional ac-cessory (option 29).Measuring ModesInputs A and B can be swapped internally in all modes except Rise and FallTime.Frequency A, B, CRange:Input A: up to 300 MHzInput B: up to 100 MHzInput C (option 20): 100 MHZ to 2,7 GHzInput C (option 13): 300 MHz to 8 GHzResolution: 11 digits in 1s measuring timeFrequency Burst A, B, CFrequency and PRF of burst signals down to 1s (CH. A and B) or 50 s(Ch. C) can be measured without external control signals.Period ARange: 3.3 ns to 1010sResolution: 11 digits in 1s measuring timeFrequency Ratio A/B, C/BRange: 10-9to 1015Time Interval A to BRange: 0 ns to 1010sResolution:Single shot: 50 ps (1 ps average)Pulse Width ARange: 3 ns to 1010sRise and Fall Time ARange: 3 ns to 1010sPhase A Relative BRange: -180 to +360Resolution: 0,01Duty Factor:Range: 0.000001 to 1.000000Totalize A, BRange: 0 to 1017, 0 to 1010in A-B modesModes: A Gated by BA Start/Stop by BManual gating A minus BTime gating A minus BV max, V min, Vp-p A, BRange: -50V to + 50VFrequency Range: up to 100 MHzResolution: 1.25 mVInputs and OutputsInputs A and BCoupling: AC or DCImpedance: 1 M/15 pF or 50/(VSWR