FTTH Fiber to the Home
FTTx is a access network technology that uses optical fiber directly from the central point to the Home. FTTx offers triple play services voice, video and data.
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Modulation and Demodulation
Modulation Modulation is the process of changing one or more properties of the carrier signal in proportion with the information signal. In modulation, some parameter of the carrier wave (such as amplitude, frequency or phase ) is varied in accordance with the modulating signal . This modulated signal is then transmitted by the transmitter Demodulation…
SONET Synchronous Optical Network
SONET Synchronous Optical Network Multiplex electrical signals (Digital) from different sources and creates optical carrier (OC). USA, CANADA and JAPAN developed T1 Standard. ANSI develop SONET. The rest of the world uses a primary rate of E1. ITU-T develop SDH. Topics What is SONET? What is Synchronous Digital Hierarchy? What is SDH? What…
DWDM Dense Wavelength Division Multiplexing
Prerequisite Multiplexing Optical Fiber PCM PDH SDH Transmission Fundamental WDM Wavelength division Multiplexing (WDM) technique increase the capacity of signal carrying medium. WDM technique assign different frequency / wavelength value to every incoming signal. These signals are multiplexed on a single sharing medium. SONET/SDH use TDM technique and transmit data in the form of a…
Solar Panel Installation
Solar Panel Installation Basic Components of Solar System Solar Panel Solar Charge controller Inverter Battery Bank Load Calculation 03 energy saver (24 watt) 24*3 = 72 watt + 08 = 80 watt 02 Fan (100 watt) 100*2 = 200 + 20 = 220 watt Load = 220+80 = 300 watt If u want to use…
Computer Ports
Computer Ports Computer ports or Motherboard I/O interfaces are used to connect external devices to the computer. These interfaces are mostly located on the back side of the motherboard. Number of Interfaces depends on the size of Motherboard and technology used. PS2 Din Connector PS2 6 pin din connector Green for mouse Purple for keyboard…
SDH Synchronous Digital Hierarchy
SDH It is a transmission method. This method is used in optical fibre transmission system called SDH system. We have already discussed the basic concepts of the transmission system. This video will give you the basic concept of SDH. SDH = Synchronous Digital Hierarchy.EU and Japan standard.A standard for telecommunication transport defined by ITU-T. Prerequisite. Following…
Optical Fiber
OPTICAL FIBER Optical fiber is a type of guided medium to transport information from one point to another point.Information travels in the form of light.Data capacity of fiber is very high due to light nature of the signal.It has some important properties High Bandwidth Highly secure Easy to install Low distortion No EMI effect In…
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Bit vs Byte
Bit vs Byte
Decibel
Decibel (db) The decibel (dB) is a logarithmic ratio used to measure sound level. It is also widely used in electronics, signals and communication. The dB is a logarithmic way of describing a ratio. The ratio may be power, sound…
Bit rate and Baud rate
What is Bit rate What is baud rate Bit rate and baud rate Data encoding
Mac Address
MAC Addresses is unique 48-bits address embedded into a Network Interface card NIC during manufacturing process. These 6-byte addresses are expressed in 12 digits hexadecimal numbers.
Network Topology
Network topology refers to how various network elements ( Router, Switches, computers, wires) are physically or logically connected to each other.
Firewall
Firewall is a network security tool that monitors incoming and outgoing network traffic and permits or blocks data packets based on defined rules.
IT Infrastructure
Information Technology infrastructure refers to the composite required to deliver IT services to its employees withing organization.
Computer Server
A specialised machine / software used to connect multiple clients for a service. ( Local or Over internet). It may be physical or located on a cloud.
How do Solar Panels work
Solar cell generates electrical energy by using PN junction of Semiconductor material.
Transmission Modes
The way in which data is transmitted from one device to another device is known as transmission mode.