HP / Agilent 33220A 20 MHz Function / Arbitrary Waveform Generator. Very clean
The Agilent 33220A function/arbitrary waveform generator uses direct digital synthesis (DDS) techniques. – 14-bit, 50 MSa/s, 64 k-point arbitrary waveforms. – 20 MHz Sine and Square waveforms. – Pulse, Ramp, Triangle, Noise, and DC waveforms.