SEMINAR REPORT ON FIBER OPTICS BASED COMPUTER NETWORK
INTRODUCTION
In recent years it has become apparent that fiber-optics are steadily replacing copper wire as an appropriate means of communication signal transmission. They span the long distances between local phone systems as well as providing the backbone for many network systems. Other system users include cable television services, university campuses, office buildings, industrial plants, and electric utility companies.
A fib ....etc

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ABSTRACT
The SATMODE system provides a revolutionary low cost solution for low data rate transmission over satellite, in support of interactive television services. This low cost is achieved through the introduction of constant envelope modulation, and efficient channel coding techniques. The SATMODE system specifications will be proposed as a new Cenelec standard in Europe. The lac k of an efficient and scalable return path has always limited true interactivity over satellite TV. Remote interactivity is the key element ....etc

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PRESENTED BY
RAMYA SAHITYA .J
RAMYA .V
REVATHI .K


AIM OF THE PROJECT
• This project deals with design of scramblers/ descramblers for use with SONET and OTN optical networks.
• Writing VHDL code for scrambler/ descrambler and performing synthesis and simulation on FPGA.
ABOUT FPGA
• FPGA
• FPGA SERIES
 FAMILY NAME
 DEVICE NAME
 PACKAGE
 SPEED
SCRAMBLING
• Used for sufficent
0-1 transitions
• Scrambler is 7 bit self-synchronizing
• Polynomial X7 ....etc

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Definition
In recent years, broadcasting and information society services (IS services) have been making ever-increasing use of conditional access devices. This trend is expected to gather pace as the market for these services develops. The conditional access device (CA) provides the user with a technical facility which allows him to determine who has access to electronically-distributed services and under which conditions. In order to improve the legal situation of providers of broadcasting and IS services, the European Commission has recentl ....etc

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Fundamental of Fiber Optics
Optical Fiber
Total Internal Reflection
V-Number and Fiber Modes
Cut-off Wavelength
Definition: the wavelength below which multiple modes of light can be propagated along a particular fiber, i.e., l>=lc, single mode, l Multi-Mode vs. Single-mode
Wavelength of Transmitted Light
Wavelength-dependant Attenuation
Typical Optical Fiber Sensing Mechanism
Light Parameters
Power/Intensity
Unit:
Watts
dbm: 10log(P*1000)
Attenuation/loss
db: 10log(P1/P0)
Wavelength ....etc

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Definition
In recent years, broadcasting and information society services (IS services) have been making ever-increasing use of conditional access devices. This trend is expected to gather pace as the market for these services develops. The conditional access device (CA) provides the user with a technical facility which allows him to determine who has access to electronically-distributed services and under which conditions. In order to improve the legal situation of providers of broadcasting and IS services, the European Commission has recentl ....etc

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Why fiber?
Speed- operates at high speed upto gigabits
Bandwidth- large carrying capacity
Resistance- to EM noise
Provide electrical isolation
Distance- Signals can be transmitted further without need of repeaters
Maintenance cost- less
Requirements of digital fiber link
No. of digital signal – 8
No. of fiber cable – 1
Signal frequency- 0-20KHz
I/p-O/p voltage level- 0 & 24 V for (0 & 1 digital logic)
Transmission Range- 300m
Here, we have selected HFBR-1521 transmitter and HFBR-2521 receiver ....etc

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1. SMS based Device / Home Equipment Control System
2. Remote Motor Speed Control using Cell Phones
3. GPS Based traffic Monitoring system
4. GPS Based fleet Management System
5. Implementation of Mobile/ Cell phone Jamming systems Design
6. Intelligent Security System for industrial Surveillance with GSM & Auto Dialer
7. GSM Based Remote monitoring system for Electronic Energy meters
8. Wireless distributed energy billing system using GSM
9. HNet “ a Home Network System with Mobile Communication
10. Distance Measuring using U ....etc

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1. Data Encryption Algorithm for Secure Communication
2. Implementation of Modulation Techniques
3. FPGA Implementation of Frequency Hopping Spread Spectrum
4. Error Correction and Detection for Binary Codes
5. Direct Sequence Spread Spectrum
6. Protocol Implementation For Serial Data Communication using RS-232
7. FPGA Implementation of RTC
8. QAM(Quadrature Amplitude Modulation)
9. FPGA Implementation of SPI Controller
10. Interfacing the RTC using I2C Bus
11. FPGA Implementation of I2C Controller
12. Interfacing CAN ....etc

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PRESENTED BY
RAMYA SAHITYA .J
RAMYA .V
REVATHI .K


AIM OF THE PROJECT
• This project deals with design of scramblers/ descramblers for use with SONET and OTN optical networks.
• Writing VHDL code for scrambler/ descrambler and performing synthesis and simulation on FPGA.
ABOUT FPGA
• FPGA
• FPGA SERIES
 FAMILY NAME
 DEVICE NAME
 PACKAGE
 SPEED
SCRAMBLING
• Used for sufficent
0-1 transitions
• Scrambler is 7 bit self-synchronizing
• Polynomial X7 ....etc

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hello,i dig your web site while searching for polaris gearing calculator about atv,it is for a scrambler 400 1999 full build with heavy mods,
i work and fine tune those thing for 20 years,here is my question:through the years i've tried many,many gearing combo,since the first stock set til now with new smaller tires.
i use the 2001 2x4 tranny for my scrammy,i want to put best power to the rear wheels using the stock clutchs (only parts differents are aftermarket like,weights,springs,helix...)the 01 tranny doesn't have the same gear ratio insi ....etc

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