We offer a variety of USB and PCI based instruments that turn your PC into a signal generator.
The HandyScope HS3 uses a USB interface to connect to your computer. Alternatively we can offer the excellent ZT530PCI or the low cost TP801 for a signal generator that sits inside a PC. Arbitrary waveforms of various lengths can be provided using a maximum sample rate of 400MS/s. The HandyScope HS3 is both arbitrary waveform generator, and dual channel oscilloscope when connected to a PC.
Agilent offer two USB based signal generators. There is a single channel function or Arbitrary waveform generator, and a four quadrant signal source/ measure unit for generating DC signals.