... Square, Ramp, Pulse Features: function generator1.Frequency of the mode: 0.1Hz---2MHz/ 5MHz/ 10MHz2.Output waveform: Sine, Triangle, Square, ... frequency counterSpecifications:1.Frequency: LW1641: 0.1Hz--2MHz, LW-1642: 0.1Hz--5MHz LW-1643: 0.1Hz--10MHz2.Output waveform: Sine, ... AC+DC)5.Input Attenuation: 20dB6.Accuracy: Less than 0.0003%±1digit7.Line power: 220V/110V±10%, 50Hz/60Hz8.Dimension: 270* ...