... , Ramp, Pulse Features: function generator1.Frequency of the mode: 0.1Hz---2MHz/ 5MHz/ 10MHz2.Output waveform: Sine, Triangle, Square, ±Ramp ... counterSpecifications:1.Frequency: LW1641: 0.1Hz--2MHz, LW-1642: 0.1Hz--5MHz LW-1643: 0.1Hz--10MHz2.Output waveform: Sine, Triangle, ... 13.Input Signal: DC-1KHzFrequency counter:1.Measuring Range: 1Hz--10MHz≥10Vp-p2.Input Impedance: Not less than1MΩ/20F3. ...