Bit Error Rate 10-8
Contents |
Mobile Backhaul Fixed Network Healthcare Education Municipality Enterprises Government Business Need Leased Line Replacement Business Continuity Security Case Studies White Papers Datasheets Partners Distributors Resellers Training
Acceptable Bit Error Rate
& Certification Support eService Center Downloads Contact Support eLearning Center WEEE Compliance Instant bit error rate measurement Price Estimate Free GigE Link Analysis Contact Sales Home > Glossary Visit Solutions CenterBrowse Products AdaptPath™ A BridgeWave bit error rate pdf (patents pending) technology that creates an all-weather, dual-path data connection by pairing a primary path BridgeWave 60 GHz or 80 GHz GigE wireless bridge with a lower speed, highly rain-tolerant secondary
Bit Error Rate Tester
path. The resulting dual technology solution allows gigabit links to be deployed over unprecedented link distances, while maintaining up to 99.999% service availability. AdaptRate™ A BridgeWave (patents pending) technology that enables Gigabit RF links to automatically shift data rates from full-duplex GigE to 100Mbps, to overcome periods of severe cloudburst downpours. Once the downpours subside, the links seamlessly switch back to
Bit Error Rate Calculator
full GigE capacity. Availability The availability of a communications link is the amount of time that the link is percentage of time that the link is performing to the level required by the application. Availability is often expressed as a percentage or as “x nines”, where “2 nines” equals 99%, “3 nines” equals 99.9%, “4 nines” equals 99.99% and so on. Applications dictate the level of availability required of a communications link. Whereas 99.9% availability means that a link is unavailable no more than around 9 hours a year, 99.999% availability means that a link is unavailable no more than around 5 minutes per year. Generally, only critical core network connections shared by many users require 99.999% availability, while other critical intermediate nodes may be able to accept 99.99%. Most office applications can easily accept 99.9% availability, since few network server configurations are designed to even provide this level of application availability. For millimeter-wave links, availability in a given geographic area is directly determined by link path distance. Bandwidth Bandwidth is a measure of frequency range and is typically measured in hertz. Bandw
TOOLS & LEARNING Latest Design Tools Products Teardowns Fundamentals Courses Webinars Tech Papers Courses EDN TV Mouser New Products Loading... COMMUNITY Latest Blogs Design Ideas Events Loading... CONNECT WITH EDN ON TWITTER ON FACEBOOK ON LINKEDIN bit error rate tester software EDN VAULT Latest Collections Issue Archives Loading... Search DESIGN CENTERS Analog
Bit Error Rate Testing
Automotive Components|Pkging Consumer DIY IC Design LEDs Medical PCB Power Management Sensors Systems Design Test|Measurement Wireless|Networking TOOLS & LEARNING bit error rate tester agilent Design Tools Products Teardowns Fundamentals Courses Webinars Tech Papers Courses Mouser New Products COMMUNITY Blogs Design Ideas Events EDN VAULT Collections Issue Archives Home> Test-and-measurement Design Center > How To Article BER http://www.bridgewave.com/utilities/glossary.cfm measurements reveal network health Martin Rowe -July 01, 2002 Tweet Save Follow Save to My Library Follow Comments Follow Author PRINT PDF EMAIL Whether you design communications equipment, develop tests for production, install network subsystems, or maintain fnetworks, you need to make bit-error-rate (BER) measurements. BER measurements give you insight into the health of an entire network; a network subsystem such as a http://www.edn.com/design/test-and-measurement/4381984/BER-measurements-reveal-network-health switch, router, multiplexer, or hub; or a network component such as an electrical or optical transmitter or receiver. The measurements also provide benchmarks that network users require from communications service providers as part of quality-of-service agreements. BER measurements tell you how many bit errors occurred for a given number of bits that passed through a network, subsystem, or component. That history lets you assign an error probability to each bit. Error sources A bit error occurs when an electrical or optical receiver makes an incorrect decision about a bit's logic level. Many factors can contribute to BER. They include signal power, noise, jitter, and EMI from radiated emissions or crosstalk. Noise at the point where a receiver decides the logic level of a bit can cause the receiver to misinterpret that bit. Poor signal-to-noise ratio (SNR) and poor extinction ratio (the average power level of logic-1 bits compared to the average power of logic-0 bits) make it easier for random noise to cause bit errors. Jitter also causes bit errors. A change in clock timing can cause a receiver to lose synchronization with incoming bits. A risin
be down. Please try the request again. Your cache administrator is webmaster. Generated Sun, 02 Oct 2016 12:43:26 GMT by s_hv978 (squid/3.5.20)