Superior Performance and Versatility: With the 25 MHz AFG3021C you can choose from 12 different standard waveforms. Arbitrary waveforms can be generated up to 128 K in length at high sampling rates. On pulse waveforms, leading and trailing edge time can be set independently. External signals can be connected and added to the output signal. All instruments feature a highly stable time base with only ?1 ppm drift per year.