a signal is a physical quantity or impulse that transmits information. This could be anything from electrical impulses in electronic devices to light waves in optical communications.
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.
Modulation and demodulation are fundamental processes in telecommunications that involve the encoding and decoding of information onto a carrier signal.
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…
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 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 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 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…
Microsoft Excel Now the Second video of Microsoft Excel training is in front of you.I hope u will get some knowledge from it and help me to improve my work.You can visit my last video of this series from here…
Storage Devices Storage devices are used to save data in a computer.In this video, we are going to learn some more information about storage device.We will cover following definitions Storage devices volatile memory RAM Non-volatile memory Primary storage Secondary storage
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…
What is Bluetooth Bluetooth is a wireless connectivity standard it connects devices together over a limited distance.Bluetooth establish an ad hoc network and connected devices work in master and slave fashion.Ad hoc network is also called PAN.In this video we…
GPON stands for Gigabit Passive Optical Networks. GPON is a point-to-multipoint access network. It can transport not only Ethernet, ATM and TDM traffic.
UPS and Battery Selection Now our environment is changing, specially in Karachi, the weather is going hotter day by day.Pakistan is facing energy shortage problem due to some of the bad government policies. Loadshedding is a big issue for Pakistani people…
Some time we need to re partition our hard disk due to heavy data in one partition.Most of us dont know that it can be done with the help of some simple steps.In this video i will tell u about these…
Microsoft Excel In this video, we are going to start Microsoft Excel.This video is the first of this series. First, we will cover Microsoft excel and then we will go for word and power point in coming videos.I hope u will get…
How to Check a Computer? How to check a computer? It is a basic question when purchasing a computer.In our daily life, a computer is an important and very useful machine. We are using it to perform several functions in our…
IP Address Internet Protocol address is the numeric identification of a computing machine on a network. It tells the location of a device on a network. It is also called the software Network address. It allows a host to communicate…