N.E. Illinois, CIS 3200

Excerpt: ... MIS 3200 Networking Fundamentals Extra-Credit Due date: 2/24/2009 at beginning of class Reading Questions Read page 73-82 in the course text book and answer the following end-of chapter questions: 1. Explain how Category 5e UTP can support 1000 Mbps ...

Texas A&M University, Corpus Christi, SCI 3342

Excerpt: ... . 10. Name at least three radiated data transmission techniques used in networking. 11. What is the distance limitation of UTP wire for setting up a network? What is its speed limitation? 12. What type of connectors is used to setup a network using UTP wire? 13. Why STP wire is more reliable than UTP wire? 14. What is the distance limitation of STP wire to setup a network? 15. What type of connectors is used to setup a network using STP wire? 16. For what type of network, coax cable is used? 17. What is the distance limitation for coax cable? 18. Name some connectors used with coax cable? 19. What is a terminator? What is its purpose on a cable network? 20. Which conducted medium offers highest level of security? 21. Which conducted medium supports highest data rate over long distance? 22. What type of connectors is used for fiber optic cable ? 23. Which conducted medium provides most reliable data transfer? 24. What FDDI stands for? 25. What is dark fiber? 26. List some advantages of fiber optic cable over ot ...

Georgia Perimeter, CSPK 2212

Excerpt: ... Phys 2212L LAB 12 The Speed of Light Purpose Light can travel down a fiber optic cable like water traveling through a garden hose. Because the light continuously reflects off the interior surface of the cable, it can be induced to turn corners and even travel in circles. We will take advantage of this property of fiber optics to measure the speed of light. Principles Fiber optical cables consist of a translucent material, either plastic or glass, spun into thin tubes and wrapped or clad with another translucent material of lower index of refraction. The phenomenon of total internal reflection ensures that light waves hitting the boundary of the tubes will always be reflected along the cable. The speed of light kit included in the set up for this lab will generate regular pulses of red light. This is done by means of a light-emitting diode, LED, a semi-conducting resistor that emits light when the voltage across it exceeds a certain threshold value. Detection of the pulse is accomplished by another diode t ...

Concordia Chicago, P 226

Excerpt: ... and leave streaks behind bright areas of the image. Expense: CCDs require different manufacturing process from other computer chips (such as CPU and memory), so specialized CCD fabrication plants are necessary.17 One more important, and often unavoidable, flaw of CCDs is dead pixels, or elements of the chip that are simply inactive; when the size of the chip approaches several megapixels, this is almost inevitable, though often goes unnoticed. Fiber optics, on the other hand, operate more on the classical, rather than the quantum mechanical, properties of light. The main reason behind this is that fiber optic cable s are used to 15 1 Ibid. 16 1 Ibid. 17 1 Ibid. Steven LaRue and Paul Rekemeyer Optoelectronics transmit propagating waves to send information across a far distance, rather than relying on the particle nature of light. To start, lets look at the design and features of fiber optic cable s. Fiber optic cable s consist of, in general, four main components: core Thin glass center of the fi ...

Augustana, HELIOS 351

Excerpt: ... Fiber Optics Theory The speed of light in a material depends on the index of refraction n as v = c/n, where c is the speed of light in vacuum. As shown in Figure 1, when a light ray passes from one material with index of refraction n1 to a material with a different index of refraction n2, some is reflected and some is transmitted. internal reflection at the surface of the fiber. Therefore, it maintains higher intensity over greater distances. In this experiment, you will study some of the basic properties of fiber optic cable s and of the electronics required to transmit and receive the light signals. You will also measure the speed of light in the fiber and transmit sound through the fiber. Procedure You should have six different lengths of fiber cable: 10 cm, 20 cm, 30 cm, 40 cm, 60 cm and 10 m. Basic Properties Figure 1. Refraction of light T I n1 n2 The direction of the transmitted light ray obeys Snell's law: sin T = n1 sin I n2 1 Figure 2 shows the arrangement of the electronics and the fibe ...

BYU, IT 327

Excerpt: ... How is it different? 3. Turn on the light source and turn on the optical receiver. Align the 2 cables by adjusting the knobs until the receiver receives the maximum amount of light. Now record the measurements of the knobs. MAX Power: _ Horizontal: _ _ _ _ Alignment: _ _ _ Angle: _ Record the amount of power received as you move the 2 cables apart in the horizontal direction. Take at least 10 different readings and graph your results. Align them once again until you have maximum power. Now separate the 2 cables in the vertical direction. Take at least 10 different readings and graph your results. Now analyze your graphs. How important is it to have good connectors using fiber optic cable s? How does the angle affect the reflection between the 2 cables and internally? Conclusion: What are some practical every day uses of fiber optics? (At least two) What are the advantages and disadvantages of using fiber optic cable s? (At least two) Horizontal Level Max 1 2 3 4 5 6 7 8 9 Power ...

Wyoming, CS 1200

Excerpt: ... Lecture Exam Monday 5:30 6:30 bring a blue bubble sheet lab sections 10, 11, 12 take test in Classroom Building 302 lab sections 13, 14, 15 take test in Classroom Building 304 lab sections 16, 17 take test in Classroom Building 306 lab sections 19, 20 take test in Classroom Building 308 Telecommunications Communications over a distance. The Telecommunications Industry Major Players phone companies cable-TV and Satellite Companies content providers other players software companies communications hardware companies The Telecommunications Industry (cont.) Government Legislation Carterfone Decision Telecommunications Act of 1996 Communications Media Provides the means of transmitting a signal between two hardware devices Types of Communications Media Wire Twisted Pair Cable Coaxial Cable Fiber Optic Cable Wireless Microwave Transmission Terrestrial and Satellite Transmission Cellular details follow Twisted Pair Cable RJ 45 wall outlet Coated with pla ...

Mississippi State, ECE 4522

Excerpt: ... Remote Sensing Technologies Center ASD FieldSpec FR Operating Procedure Preparing the ASD to take measurements The FieldSpec battery pack must be charged with both the AC adapter and the FieldSpec battery charger. Plug the adapter into a 120 V AC wall outlet and the three-hole female plug into the battery charger socket labeled 24 V in. Now plug the battery pack into the battery charger socket labeled battery. Normal charging should be complete in 4.5 hours, the red LED on the side of the battery charger will turn green when the battery is fully charged. Remove the ASD device from the crate and take it out of the black padded carrying case. Open the device by turning the two keyed-like latches counter-clockwise. Remove the fiber optic cable from the pouch located on the inside of the lid of the ASD. Note: Do not stress the fiber optic cable by sharply bending it, and protect the end of the cable with the protective cap when the device is not in use. Now remove the lid by ho ...

San Jose State, B 111

Excerpt: ... surrounded by a braided metal shield, then covered in a plastic jacket Cable can be thick or thin Baseband coaxial technology uses digital signaling Cable carries only one channel of digital data Broadband coaxial technology transmits analog signals Capable of supporting multiple channels of data 11 Coaxial Cable (continued) 12 Coaxial Cable (continued) 13 Fiber Optic Cable A thin glass cable approximately a little thicker than a human hair surrounded by a plastic coating and packaged into an insulated cable A photo diode or laser generates pulses of light which travel down the fiber optic cable and are received by a photo receptor 14 Fiber Optic Cable (continued) 15 Fiber-Optic Cable (continued) 16 Fiber-Optic Cable (continued) It is very common to mix fiber with twisted pair in LANs 17 Fiber-Optic Cable (continued) 18 Wireless Media Radio, satellite transmissions, and infrared light are all different forms of electromagnetic waves used to transmit data Note in the follow ...