EE1641B1 Function Generator/Frequency Counter Specifications Output Frequency 0.2Hz~2MHz Output Amplitude 10Vp-p (50Ω load), 20Vp-p (1MΩ load) Output Waveform 7 waveforms including sine, triangle and rectangle wave Central potential and duty ratio adjustable Rectangle Wave Edge ≤30ns Sine Wave Distortion ≤1% Output Impedance 50Ω(function), 600Ω(TTL synchronous output） Output Signal Attenuation 0dB/20dB/40dB/(20+40)dB Frequency Counter Measuring Range 0.2Hz~20MHz Size and Weight 240x220x80(mm), 2kg 50Hz single frequency output optional Features ．LSI used ．Simultaneously display & output amplitude (3 LED) and frequency(5 LED) ．To be used as a frequency counter (10MHz, equal accuracy) ．Various output mode (single frequency, modulated frequency, internal/external sweep frequency) ．All-function output protection ．SMT assembled, portable structure ．High reliability, MTBF≥10000 hours ．DC level adjustable ．Electronic switch ．Won the World Bank loan bids from National Education Department in 1999/ 2002 EE1642B Function Generator/Frequency Counter Main Specifications Output Frequency: 0.2Hz~10MHz Other specifications and figuration same to EE1641B1 Main Features Same to EE1641B1 EE1642B1 Function Generator/Frequency Counter Main Specifications Output Frequency: 0.2Hz~15MHz Other specifications and figuration same to EE1641B1 Main Features Same to EE1641B1 EE1641B2 Function Generator/Frequency Counter Main Specifications Output Frequency: 0.2Hz~3MHz Other specifications and figuration same to EE1641B1 Main Features Same to EE1641B1 EE1641F/EE1642F/1642F1 Function Generator/Frequency Counter Main Specifications Specifications are separately same to EE1641B1, EE1642B, EE1642B1 Size: 240?93?0(mm)3 Main Features Metal machine case, excellent shield EE1641E Function Generator/Frequency Counter Main Specifications Single pulse output Other specifications and figuration are same to EE1641B1 Main Features Manually output level saltus Other features are same to EE1641B1