Check the listing for details. Lab Frequency Periodicity Counter Multi-function Counter PPM 1Hz-10MHz 20mVrms. Condition: New. Listed at 210.66 USD. Lab Frequency Periodicity Counter Multi-function Counter PPM 1Hz-10MHz 20mVrms Overview:This multi-function counter is developed and accomplished by using microprocessor technology. It is a kind of precision test instrument. The biggest feature of this instrument is that it adopts inverse counting technology with high measurement accuracy, wide frequency range, high sensitivity and fast measurement speed. It has the function of PPM measurement and the preset frequency F0 can be set arbitrarily. This instrument is suitable for post and telecommunications communications, electronic laboratories, production lines and teaching, scientific research. Features :Microcontroller controlEqual precision measurementMeasuring speed 20 times / secHigh cost performance, high reliabilityF0 can be set arbitrarily during PPM measurement.Specialized PPM FM meter for crystal industryA-channel with low-pass filter and 20-fold attenuation function10-bit LED display (8 data bits, 2 index values)New conductive rubber touch keypad, beautiful and generous appearance Parameter :NameTechnical specifications: FunctionFrequency measurement, weekly measurement, counting, self-calibration, PPM measurementFrequency Measurement Range1Hz~100MHzPeriod Measurement Range10ns～1sCounting capacity10 8 -1Sensitivity10Hz~10MHz/100MHz 20mVrmsInput AttenuationX1 or x20Low Pass FilterCutoff frequency approx. 1MHz/100kHzInput ImpedanceA channel:11M Ω /40pF B channel：50ΩCoupling MethodAC couplingWaveform AdaptationSine, Pulse, TriangleMeasurement ErrorTime base accuracy Trigger error X measured frequency (or period) ± LSDWeight1.8kgOverall Dimension230mmx92mmx230mmResolutionsGate time 100ms display 7 bitsGate time 10s display 8 digitsMaximum Input AmplitudeA channel: AC plus DC ≤250Vp-pB channel:≤3Vp-pTime baseNominal frequency:10MHzFrequency stability:5x10-6/d Instrument Kits and Accessories:Multi-function counterTest cablePower cord ST3-3Fuse tube BGXP-1-10-0.5AProduct manualCertificate of ConformityProduct warranty card and user file card