Rigol DG902 Pro 2 channels70 MHz maximum frequency (sine)Very small footprint - 10.4” x 6.5” x 3.1” (W x H x D)Lightweight - only 3.9 pounds16 Mpts/ch memory depth (32 Mpts/ch via option DG900 Pro-3RL) Function/Arbitrary Waveform Generator (2 Channel / 70 MHz) The Rigol DG900 Pro series is a cost-effective, dual-channel function/arbitrary waveform generator that combines multiple functions including Function Generator, Arbitrary Waveform Generator, Noise Generator, Pulse Generator, Harmonic Generator, Analog/Digital Modulator and Counter. The chart below outlines several main specifications of each model.DG902 ProDG912 ProDG922 ProMaximum frequency70 MHz150 MHz200 MHzChannelsTwoTwoTwoSample rate1.25 GSa/s1.25 GSa/s1.25 GSa/sVertical resolution16 bit16 bit16 bitMemory depth16 Mpts/ch16 Mpts/ch16 Mpts/chMemory depth can be upgraded to 32 Mpts/ch via option DG900 Pro-3RL. Waveform output The Rigol DG900 Pro has multiple built in waveforms, covering frequently used signals in engineering, medical electronics, mathematics and more. Output Mode: Continuous, Modulation, Sweep, Burst, SequenceStandard Waveform: Sine, Square, Ramp, Pulse, Noise, Arb, HarmonicBuilt-in Arb Waveform: 148 types of waveforms, including Sinc, Exponential Rise, Exponential Fall, ECG, Gaussian, HaverSine, and LorentzDG902 ProDG912 ProDG922 ProSine1 µHz to 70 MHz1 µHz to 150 MHz1 µHz to 200 MHzSquare1 µHz to 60 MHz1 µHz to 60 MHz1 µHz to 60 MHzRamp1 µHz to 3 MHz1 µHz to 5 MHz1 µHz to 5 MHzPulse1 µHz to 50 MHz1 µHz to 50 MHz1 µHz to 50 MHzArb1 µHz to 30 MHz1 µHz to 50 MHz1 µHz to 50 MHzHarmonic1 mHz to 35 MHz1 mHz to 75 MHz1 mHz to 100 MHz ? Various modulation types The DP900 Pro offers several types of modulation for a variety of testing scenarios. Modulation types include AM, FM, PM, ASK, FSK, PSK, PWM and SUM.