The PicoScope 3207A from Pico Technology, St. Neots, U.K., is a 2-channel USB oscilloscope with 250 MHz bandwidth, 1 Gsps sampling rate, 256 Megasample buffer memory, and a built-in function generator. Basic timebase accuracy is ±2 ppm. Other features include digital triggering for accurate, stable waveform display and equivalent-time sampling, which boosts the effective sampling rate to 10 Gsps for repetitive signals. The PicoScope 3207B has 512 Megasamples buffer memory and an additional 32,000 sample arbitrary waveform generator with a 100 Msps update rate. Software is included.