| Given the high-data rates in digital applications, it is critical that a bandwidth capacity that uses a high-frequency signal - typically 2.25 MHz - is available. At these high frequencies, the system installer needs to consider such issues as return loss, insertion loss, VSWR (voltage standing wave ratio), skin effect and electromagnetic field effects. The coax connectors traditionally used for analogue systems are not designed to take account of these issues, and if used in high-rate digital systems will put the signal integrity at risk.
To fulfil these requirements, Vitelec Electronics, UK, a division of Emerson Network Power, has recently introduced a new range of high-end 75W BNC connectors, designed to meet the specific demands of digital technology by delivering extremely high levels of performance and efficiency for digital signal transmission. Including plugs for the most commonly used cables, adapters and precision crimp tooling, the range features a controlled 75W impedance for high-speed signals, captivated contacts, crimp/crimp assembly, high-performance materials, and intermatability with existing standard 50W BNCs already present within a system.
With an insulation resistance of 5,000 megohm (minimum), the range delivers a centre contact resistance of 4 milliohm (maximum) and an outer contact resistance of 3.55 milliohm (maximum), in operating temperatures of between -55 and +85�C. The new connectors will be of interest for a wide range of installations, including digital video, TV broadcast, telephony instrumentation, CATV transmitter, computer networking, satellite receiver, test, medical and imaging equipment. Product data, providing information including detailed specification, assembly instructions and computer cross-references, is available on request.
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