USB-powered, PC-based, mixed-signal scopes with ARB

September 22, 2014 // By Graham Prophet
The PicoScope 3000D Series Mixed-Signal Oscilloscopes (MSOs) are intended for engineers working on a diverse range of embedded systems. These USB-connected devices form a complete portable test system, with two or four analogue channels and sixteen digital channels as well as a built-in arbitrary waveform generator.

An upgrade to the prior 3000 series, key specifications—sampling rate, buffer size and display update rate—have all been improved, while the units remain USB-powered.

The PicoScope 3000D Series MSOs are available with analogue bandwidths from 60 MHz to 200 MHz. Maximum digital input frequency is 100 MHz, equivalent to a data rate of 200 Mb/sec (5 nsec pulse width) on each channel. All models come with a USB 3.0 interface and are fully compatible with USB 2.0, giving high performance and fast update rates with both port types. Like all PicoScopes, they display waveforms in a resizable window on a PC's screen, giving an uncluttered space for multiple high-resolution analogue and digital traces, and allowing the user to save, share and analyse waveformswhile the PC’s networking, storage and processing facilities are available. The deep memory buffers of 128 to 512 megasamples, much larger – Pico says – than other scopes costing several times more, allow long captures at fast real-time sampling rates of up to 1 Gigasample per second. Hardware-accelerated data processing maintains smooth and rapid display updates even with very large capture sizes.