Test & Measurement


Scopes provide Ethernet interface verification

18 March 2015 Test & Measurement

Rohde & Schwarz has expanded the application field of its RTO oscilloscopes to include Ethernet interface testing. The new RTO-K22 and RTO-K23 Ethernet compliance options allow users to perform standards-compliant automated tests on 10/100/1000BASE-T and 10GBASE-T Ethernet interfaces. All compliance tests meet IEEE and ANSI Ethernet test specifications.

The R&S RTO instruments are well suited to Ethernet compliance testing with their dynamic range of more than seven effective bits (ENOB). Users can reliably test the Ethernet compliance of their products during type testing and in production. For instance, they can verify the signal quality of Ethernet devices by using an eye diagram to check the signal strength and signal characteristics of Ethernet telegrams. This is made possible by the scope’s hardware-accelerated mask test, which performs an impressive 600 000 tests per second.

The test solution includes the RT-ZF2 Ethernet compliance test fixture, which has various Ethernet ports for connecting DUTs and supports both 10/100/1000BASE-T and 10GBASE-T Ethernet connections. For gigabit Ethernet jitter tests, the RT-ZF2C, a special 103 metre cable with specific sections of different impedance, can be used to simulate the effect of a damaged Ethernet cable on the DUT.

The RTO-K22 and RTO-K23 Ethernet compliance test software runs either directly on the RTO or on a control computer. The software controls the oscilloscope and the DUT while a differential probe such as the ZT-ZD10 is used to contact the DUT. A wizard with graphical displays guides the user step-by-step through the measurements.

Automated test sequences can shorten test times or, for more efficient debugging, individual tests can be carried out separately. The automatically generated, configurable test report documents test results, including measurement details and trace displays.

For more information contact Trevor Grundlingh, Protea Electronics,

+27 (0)11 719 5700, trevorg@protea.co.za, www.protea.co.za





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