The Agilent / HP 33120A Function / Arbitrary Waveform Generator uses direct digital-synthesis techniques to create a stable, accurate output signal for clean, low-distortion sine waves. It also gives you fast rise and fall-time square waves, and linear ramp waveforms down to 10 MHz. 

Features and Specifications of the Agilent / HP:

●15 MHz sine and square waves 

●Sine, triangle, square, ramp, noise, sin(x)/x, cardiac & more 

●Arbitrary waveforms 12-bit, 40 MSa/s, 16k deep 

●Direct digital synthesis for 10 µHz or 10-digit resolution 

●50 mV to 10 V p-p output into 50 O with 3-digit resolution 

●Linear and log sweeps 

●AM, FM, FSK, and Burst modulation 

●GPIB (SCPI) and RS-232 included