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Ethernet is a family of wired computer networking technologies commonly used in local area networks (LAN), metropolitan area networks (MAN) and wide area networks (WAN). It was commercially introduced in 1980 and first standardized in 1983 as IEEE 802.3. Ethernet has since been refined to support higher bit rates, a greater number of nodes, and longer link distances, but retains much backward compatibility. Over time, Ethernet has largely replaced competing wired LAN technologies such as Token Ring, FDDI and ARCNET.
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Category 5 cable (Cat 5) is a twisted pair cable for computer networks. Since 2001, the variant commonly in use is the Category 5e specification (Cat 5e). The cable standard provides performance of up to 100 MHz and is suitable for most varieties of Ethernet over twisted pair up to 2.5GBASE-T but more commonly runs at 1000BASE-T speeds. Cat 5 is also used to carry other signals such as telephone and video.
NMEA 0183 is a combined electrical and data specification for communication between marine electronics such as echo sounder, sonars, anemometer, gyrocompass, autopilot, GPS receivers and many other types of instruments. It has been defined and is controlled by the National Marine Electronics Association (NMEA). It replaces the earlier NMEA 0180 and NMEA 0182 standards. In leisure marine applications it is slowly being phased out in favor of the newer NMEA 2000 standard, though NMEA 0183 remains the norm in commercial shipping.
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A passive optical network (PON) is a fiber-optic telecommunications technology for delivering broadband network access to end-customers. Its architecture implements a point-to-multipoint topology in which a single optical fiber serves multiple endpoints by using unpowered (passive) fiber optic splitters to divide the fiber bandwidth among the endpoints. Passive optical networks are often referred to as the last mile between an Internet service provider (ISP) and its customers. Many fiber ISPs prefer this technology.
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Multi-mode optical fiber is a type of optical fiber mostly used for communication over short distances, such as within a building or on a campus. Multi-mode links can be used for data rates up to 100 Gbit/s. Multi-mode fiber has a fairly large core diameter that enables multiple light modes to be propagated and limits the maximum length of a transmission link because of modal dispersion. The standard G.651.1 defines the most widely used forms of multi-mode optical fiber.
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HDBaseT is a consumer electronic (CE) and commercial connectivity standard for transmission of uncompressed ultra-high-definition video, digital audio, DC power, Ethernet, USB 2.0, and other control communication over a single category cable up to 100 m (328 ft) in length, terminated using the same 8P8C modular connectors as used in Ethernet networks. HDBaseT technology is promoted and advanced by the HDBaseT Alliance.
IEC 61162 is a collection of IEC standards for "Digital interfaces for navigational equipment within a ship".
AIS receiver station receive telegrams from near by vessels via VHF data and sending it to Automatic identification system to be recorded and used for vessel tracking and other purpose.
References
- ↑ "What is a GPS Tracker". rewiresecurity. Retrieved 15 April 2016.
- ↑ Peter Bennett (Sep 15, 1997). "The NMEA FAQ". Archived from the original on 2014-02-15. Retrieved 2013-10-21.
- ↑ "NMEA 0183 vs NMEA 2000". November 2018. Archived from the original on 2013-08-19. Retrieved 2020-10-20.
- ↑ Spitzer, Steve. (May 2009). "NMEA 2000 white paper" (PDF). Archived from the original (PDF) on 2021-03-02. Retrieved 2020-10-20.
- ↑ Reedenauer, Mark. "NMEA releases version 1.000 of OneNet® Ethernet Standard" (PDF). Retrieved 4 November 2020.
- ↑ Spitzer, Steve. "OneNet summary for NMEA Board of Directors" (PDF). Retrieved 9 January 2015.
- ↑ "OneNet Ethernet Standard".
- ↑ Ellison, Ben (2012-08-12). "OneNet, NMEA finally creates a marine Ethernet standard!". Panbo.
- ↑ Ellison, Ben (2013-09-09). "NMEA OneNet 2013, already ahead of the curve?". Panbo.
- ↑ Gannon, Mary (2017-03-01). "What does the coding mean on M12 connectors?". Connector Tips. WTWH Media LLC.
