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Test module handles USB triggering, analysis

Posted: 10 Dec 2009 ?? ?Print Version ?Bookmark and Share

Keywords:USB? oscilloscope? embedded systems? test module?

Tektronix has released the DPO4USB module for triggering and analysis on USB serial buses, which it claims to be the first for bench oscilloscopes under $10,500.

The module is designed to address the challenges facing designers of embedded systems where the use of USB is exploding, for both system-to-system as well as chip-to-chip communications. These systems include toys, medical equipment, industrial systems, digital cameras and video recorders.

To speed time to market for these applications, the module automates key measurement and analysis tasks on USB 2.0 low-speed, full-speed and high-speed buses, enabling engineers to more quickly troubleshoot and debug their designs.

For USB 2.0 low-speed and full-speed data rates, it triggers on user-defined packet content and then displays the results as time-correlated waveforms and data packets. For all USB 2.0 data speeds including high-speed, the module enables the oscilloscope to automatically decode packet streams, showing critical information like SYNC, handshake packets, token packets, data packets and more. Using the oscilloscope's standard Wave Inspector tools, designers can search packet-level content and mark points of interest, and then navigate among these with the Next and Previous keys and the Pan/Zoom controls.

The new application module is compatible with Tektronix oscilloscopes in the MSO4000 series (three models) and the DPO4000 series (three models). For high-speed USB 2.0 support, a 1GHz model is required. U.S. MSRP list price for the DPO4USB serial triggering and analysis module is $1,500.

- Patrick Mannion
DSP DesignLine

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