Data Speeds Meet a Slip Ring

Posted on Wednesday, January 16, 2013 in UEA Blog

Do you have a need for faster data communication through an electric rotational connection? In the interest of determining just how much data could be passed through a slip ring, UEA purchased new test equipment and set upon finding an answer. Using a Signaltek Gigabit Ethernet Certifier, silver on silver circuit UEA slip ring and over 90 yards of Cat5e cable, we were able to find answers. Connecting the devices in series presented a configuration that allowed the gigabit certifier to successfully pass packet sizes of 1518 bytes through a rotating slip ring and cable from the main handset to the remote handset at speeds of 100 megabit per second over five circuits (four silver on silver for TX+, TX-, RX+, RX- one standard circuit for shield) and speeds of 1 gigabit per second over 9 circuits (eight silver on silver circuits for four twisted pairs and 1 standard circuit for shield).cable performance cable performanceThe long length of cable was used to account for any headroom a customer's system may have, as 300 feet is the maximum recommended length of Ethernet cable to use without signal amplification. The test was also performed in a “quiet” lab, with very little electromagnetic interference or “noise” to alter the test results. Although UEA has experienced little need for these types of data rates in the past, an increasing number of applications in today's world are using them. These include certain wind turbines, robotics, and networking cable reels to name a few. If you have an application where high data speed transmission is needed please give us a call and we would be happy to work with you to build a custom slip ring.

Kyle Riegel

Design Engineer

United Equipment Accessories, Inc.