... .w/AM FM function MCH DDS Function Generator, SM-4040 DDS Function Generator, 40MHz Freq., built-in frequency counter. ... /20/40/80/120MHzModulation Waveformsine, square, triangle,±Ramp, ±Pulse,Rise/fall exponential,Rise/fall logarithm,Gause noise, Cardiac, ... 20/40/80/120MHzModulation WaveformSine, square, triangle, ±Ramp, ±Pulse, Rise/fall exponential,Rise/fall logarithm,Gause noise,Cardiac,SIN ...