... output Output waveform: Sine, Triangle, Square, Ramp, Pulse Features: function generator1.Frequency of the mode: 0.1Hz---2MHz/ 5MHz/ 10MHz2 ... 30MHz frequency counterSpecifications:1.Frequency: LW1641: 0.1Hz--2MHz, LW-1642: 0.1Hz--5MHz LW-1643: 0.1Hz--10MHz2.Output waveform: Sine, Triangle ... 90:10--10:907.Rising Edge of Square: LW-1641: less than 100ns, LW-1642: less than 50ns, LW1643: less than 50ns, ...