Data Sheets
The U7243A USB 3.0 electrical test software offers several features to simplify the validation of USB 3.0 designs:
With the USB 3.0 electrical test software, you can use the same oscilloscope you use for everyday debugging to perform automated testing and margin analysis based on the USBIF specified tests.
USB 3.0 compliance testing
To pass signal quality testing at a USBIF-sponsored compliance workshop, your product must successfully pass “Gold Suite” testing, based on the USBIF SigTest application. The SigTest application tests your device against the minimum signal-quality performance requirements for USB 3.0. If you are developing receivers and transmitters for add-in boards and system motherboards, the USB 3.0 electrical test software helps you execute all the SigTest tests and additional oscilloscope already completed tests.
While SigTest tests provide a good overview of USB 3.0 electrical signal quality, they address only a small subset of the electrical compliance measurements specified in the USB 3.0. The SigTest application also provides minimal reporting capability with pass/fail indication and measurement values, and has limited debugging capabilities to decipher eye mask violations or excessive jitter.
For USB 3.0 measurements, the U7243A software automatically calculates deterministic jitter and total jitter at 10-12 BER. Random jitter is also reported for completeness and a voltage margin “eye” diagram is included in the final HTML report. DJ and TJ values are specified in the USB 3.0 specification and are required for compliance verification.
Benefits
The U7243A USB 3.0 electrical test software saves you time by setting the stage for automatic execution of USB 3.0 electrical tests. Part of the difficulty of performing electrical tests for USB 3.0 is hooking up the oscilloscope, loading the proper setup files, and then analyzing the measured results by comparing them to limits published in the specification. The USB 3.0 electrical test software does much of this work for you. In addition, if you discover a problem with your device, robust debug tools are available to aid in root-cause analysis. These debug tools are provided by the Keysight E2688A high-speed serial data analysis software and N5400A EZJIT Plus jitter analysis software, which you must install on your oscilloscope to use the USB 3.0 electrical test software.
The U7243A USB 3.0 electrical test software offers many more electrical tests than the SigTest application. Unlike the SigTest application, the U7243A USB 3.0 electrical test software automatically configures the oscilloscope for each test, and it provides an informative results report that includes margin analysis indicating how close your product is to passing or failing a particular test assertion. Table 1 shows a side-by-side comparison of the capabilities of the USBIF SigTest application and the Keysight U7243A electrical test software
Easy Test Definition
The U7243A USB 3.0 electrical test software extends the ease-of-use advantages of Keysight’s Infiniium 90000 Series oscilloscopes to testing USB 3.0 designs. The Keysight automated test engine walks you quickly through the steps required to define the tests, set up the tests, perform the tests, and view the test results. You can select a category of tests all at once, or specify individual tests. You can save tests and configurations as project files and recall them later for quick testing and review of previous test results. Straightforward menus let you perform tests with a minimum of mouse clicks
Configurability and Guided Connections
The U7243A USB 3.0 electrical test software provides flexibility in your test setup. It guides you to make connection changes with hookup diagrams when the tests you select require it
Reports with Margin Analysis
In addition to providing you with measurement results, the U7243A USB 3.0 electrical test software provides a report format that shows you not only where your product passes or fails, but also reports how close you are to the limits specified for a particular test assertion. You can select the margin test report parameter, which means you can specify the level at which warnings are issued to alert you to electrical tests where your product is operating close to the official test limit defined by the USB 3.0 specification.
Extensibility
You may add additional custom tests or steps to your application using the N5467A User Defined Application (UDA) development tool (www.keysight.com/find/uda). Use UDA to develop functional “Add-Ins” that you can plug into your application.
Add-ins may be designed as:
Automation
You can completely automate execution of your application’s tests and Add-Ins from a separate PC using the included N5452A Remote Interface feature (download free toolkit from www.keysight.com/find/scope-apps-sw). You can even create and execute automation scripts right inside the application using a convenient built-in client.
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