The USBscope50, thought to be the industry’s smallest USB digital storage oscilloscope (DSO), offers features normally associated with bench-type units such as 300V Cat II galvanic input isolation between BNC ground and USB ground. The instrument uses standard BNC oscilloscope probes and features ac/dc coupling, programmable trigger threshold and edge modes, pre- and post-trigger, programmable input offset, eight-bit sampling at 50 Msamples/s 8-bit sampling, and 3V/30V/300V input ranges with a x10 scope probe. Powered from a USB port, users can configure one channel or up to four channels when using multiple adapters. A proprietary synchronization system ensures signal channel-to-channel matching and concurrent triggering. Price for the USBscope50 is under $279. SAELIG CO., Pittsford, NY. (888) 772-3544.