Comprehensive USB All data rates and test scenarios As part of the USB-IF compliance program, the USB Im- compliance testing plementers Forum (USB-IF) has specified test procedures intended to ensure flawless interaction between a wide va- riety of DUTs with USB interfaces, involving one host and a desired number of devices and hubs. Passing these tests is mandatory for a product to obtain certification. The tests also play a key role in the early detection of problems dur- ing development and in providing customers with convinc- ing evidence of compliance with standards. The R&S®RTO-K21 software automates the USB-IF tests for USB2.0/1.1/1.0 at the device, hub and host level (see table below), thereby allowing quick test completion. R&S®ScopeSuite with USB2.0 compliance test. Compliance tests from a single source: R&S®ScopeSuite R&S®RTO-K21 is integrated in the R&S®ScopeSuite soft- ware, a tool developed by Rohde & Schwarz for automated compliance tests. From a Windows 7 PC, R&S®ScopeSuite uses the LAN interface to control the configuration of, and testing with, the R&S®RTO digital oscilloscope as well as signal generation by the Tabor WX2182B. This en- sures that test steps are executed quickly and accurately. R&S®ScopeSuite is supplied as part of R&S®RTO-K21. Supported compliance testsRequired probesDeviceHostHubDifferentialSingle-endedHigh-speed tests (2.0) Signal quality (SQ) ● ● ● 1 Packet parameters ● ● ● 1 Chirp timing ● ● ● 2 active or passive Suspend/resume/reset ● ● ● 2 active J/K, SE0_NAK levels ● ● ● 2 active Receiver sensitivity ● ● 1 Hub jitter ● 1 Hub repeater ● 1 2 active Full-speed test (1.1) Full-speed signal quality ● ● ● 1 2 active or passive (SQ) Low-speed test (1.0) Low-speed signal quality ● ● ● 2 active or passive (SQ) Legacy tests Inrush current ● ● Back voltage ● ● 1 2 active Host drop ● ● 2 active Host droop ● ● 2 active or passive 4 RTO-K21_bro_en_3606-9285-12.indd 4 18.03.2014 19:02:32