How to Test USB 2.0 Interface Compliance

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MXR-Series Oscilloscope
+ MXR-Series Oscilloscope
MXR-Series Oscilloscope
+ MXR-Series Oscilloscope

Validating physical layer compliance of the USB 2.0 interface

Testing Universal Serial Bus 2.0 (USB 2.0) electrical specification compliance requires verifying the devices, hosts, and hubs using the USBET20 stand-alone electrical signal analysis tool. Tests must be completed for all USB 2.0 data speeds — low speed (1.5 Mbps), full speed (12 Mbps), and high speed (480 Mbps).

Each data speed must pass comprehensive signal tests, including USB bus voltage (V-BUS) inrush and current tests, V-BUS droop, drop, and back drive voltage tests, as well as signal quality tests like eye patterns. High speed requires compliance with an additional suite of electrical tests — high speed signal quality, receiver sensitivity, chirp timing, and packet parameters. Engineers need a 2.5 GHz bandwidth oscilloscope, dedicated test fixtures, and automated test software to capture the maximum 480 Mbps.

USB 2.0 compliance test solution

Ensuring USB 2.0 device reliability and interoperability requires engineers to conduct the USB compliance test defined by the USB Implementers Forum (USB-IF). The Keysight USB 2.0 compliance test solution consists of a Keysight MXR-Series oscilloscope, USB 2.0 compliance test software, and a USB 2.0 high-speed fixture set. Together, these comprise a certified solution enabling you to replicate USB 2.0 certification test environments in your lab. The test application automatically executes the official USB-IF software using embedded compliance software on the oscilloscope for each test. The solution provides comprehensive results, including margin and statistical analysis.
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