DRAFT COPY Hkkjr ljdkj GOVERNMENT OF INDIA jsy ea=ky; MINISTRY OF RAILWAYS (dk;Zky;hu iz;ksx gsrq) (For official use only) Different types of Networks in Indian Railways (FOIS/RAILNET) A MAINTENANCE HANDBOOK dSeVsd@‚l@izkSt@10&11@‚pch&usVodZ CAMTECH/S/PROJ/10-11/HB-NETWORK EkkpZ 2011 March 2011 Maharajpur‚ Gwalior DRAFT COPY Chapter 1 Chapter 2 Chapter 3 Chapter 4 Chapter 5 Chapter 6 Chapter 7 Chapter 8 Chapter 9 Chapter 10 Chapter 11 Appendix –A Appendix –B Introduction
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Optical Communication Concept R K Gangwar Divisional Engineer(Transmission) BSNL For circulation to Trainees only Agenda • History • Why Optical Fiber? • Applications of Optical Fiber • Transmission Sequence • Geometry of Fiber • Principle of Propagation of Light • Types of Optical Fiber For circulation to Trainees only History • • • • 1960: Laser invented 1967: New Communications medium: cladded fiber 1960s: Extremely lossy fiber: more than 1000 dB /km 1970‚ Corning Glass
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Innovation A Driver for Value Creation by QMD Innovation and Value Creation Technical Committee http://www.asq-qm.org/innovation-and-value-creation What Is Innovation? In – nova – tion means …..doing things….. In - a new – way So‚ how can we define innovation? >>> Quality Management Division Innovation and Value Creation Technical Committee What Is a Definition of Innovation? Innovation is: The successful conversion of new concepts and knowledge into new products and processes
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time-consuming‚ complex‚ and expensive to install and operate. In order to package fiber into a commercially viable product‚ it typically is protectively coated by using ultraviolet‚ light-cured acrylate polymers‚ then terminated with optical fiber connectors‚ and finally assembled into a cable. After that‚ it can be laid in the ground and then run
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6/9/12 /18/24 Mbps‚ 22 dBm @ 36 Mbps‚ 21 dBm @ 48 Mbps‚ 18 dBm @ 54 Mbps Mounting: For both wall and pole mount Enclosure: Silver Powder Coated Cast Aluminum Fully Transparent Bridge: Bridge Layer 2 in AP + WDS mode only‚ Bridge Layer 2.5 in SU mode Connector: N-Type Female Receive Sensitivity: -90 dBm ≤ 6 Mbps -72 dBm ≤ 54 Mbps RF Channels: Total of 12 Non-Overlapping Ch. (5 Channels: 5.725 ~ 5.850 GHz) Data Security: WPA‚ WPA2 & 64/128 bit WEP Data Security‚
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1938 by Frederick Krehbiel‚ Molex Inc. designed‚ manufactured and distributed electronic connectors that were used by a wide range of industries.1 For example‚ in the computer industry its connectors were used to produce computers‚ servers and printers; in the telecommunications industry they were used to produce mobile phones and networking equipment; the consumer products industry used Molex connectors to manufacture CD and DVD players‚ cameras‚ plasma and LCD televisions; and the automotive
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General hardware schematic Figure 4: Game Boy Internals (CPU section) Figure 5: address overview Figure 0: more detailed addresses overview Figure 1: Inside a cartridge (Type 10h) Figure 2: Game Boy with adapter & ROM Figure 3: GameLink- and GamePak-connector pinout Figure 4: Wiring diagram for a 32kB EPROM Figure
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With increasing popularity of computer games‚ and multimedia home PC users often need an unexpensive computer system upgrade. By building a custom computer one is able to combine componenets‚ and operating system to provide maximal gaming performance. Computers are often called number manipulators‚ because of their ability to run millions of mathematical operations per second (White 43). Computers use binary system of numbers‚ which allows them to operate system of microscopic switches called transistors
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Bluetooth Yes‚ v3.0 with A2DP USB Yes‚ microUSB v2.0 CAMERA Primary 5 MP‚ 2592 x 1944 pixels‚ autofocus‚ check quality Features Geo-tagging‚ touch focus‚ face and smile detection Video Yes‚ 720p@30fps‚ check quality Secondary Yes‚ VGA FEATURES OS Android OS‚ v2.1 (Eclair)‚ upgradable to v2.3 (Gingerbread) Chipset Hummingbird CPU 1 GHz Cortex-A8 GPU PowerVR SGX540 Sensors Accelerometer‚ proximity‚ compass Messaging SMS(threaded view)‚ MMS‚ Email‚ Push Mail‚ IM‚ RSS
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more than 150 pounds. Fibre is hard to work with This myth derives from the early days of fibre optic connectors. Early connectors where difficult to apply; they came with many small parts that could tax even the nimble fingered. They needed epoxy‚ curing‚ cleaving and polishing. On top of that‚ the technologies of epoxy‚ curing‚ cleaving and polishing were still evolving. Today‚ connectors have fewer parts‚ the procedures for
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