The Optical Time Domain Reflectometer (OTDR) Introduction In fiber optic networks‚ OTDR (Optical Time Domain Reflectometer) is an opto-electronic instrument used to characterize an optical fiber. Unlike power meters OTDR does not measure loss‚ but instead implies it by looking at the backscatter signature of the fiber. Generally‚ OTDR are used to determine the loss of any part of a system‚ the length of the fiber and the distance between any points of interest. Most of the light which is
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three-dimensional space vector modulation (3DSVM) is proposed for controlling a three-level NPC inverter in a three-phase four-wire system. The zero-sequence component of each vector is considered in order to implement the neutral current compensation. Both simulation and experimental results are given to show the effectiveness of the proposed 3DSVM control strategy. Comparisons with the - -0 hysteresis control strategy are also achieved. Index Terms—Three-dimensional space vector modulation (3DSVM)‚ power quality
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Broadband Transport Specialist Module 01 - History of Fiber 1. What is the name of the type of architecture (or topology) used by SONet or 10 gigabit Ethernet (10gigE) networks? a. bus b. ring c. star d. hybrid e. mesh 2. The greater the density difference between two materials‚ the more a ray of light will ___. (Choose 2) a. attenuation less b. bend c. refract d. deflect e. absorb 3. What does LASER stand for? a
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intelligent systems algorithms. Examples are microcontroller in autonomous robots‚ in or in mobile phones with advanced functions such as speech recognition. The microcontrollers involved must provide interfaces such as A/D converters and PWM (pulse width modulation) for data exchange with sensors and actuators in order to interact with the environment. The main components of a device controlled by an Embedded Intelligent System are: • Sensors and Actuators for interaction with the environment
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"Linear Technology‚ Apllication Note 54. March 1993. 121 "Battery management and dc-dc converter circuit collection - a power supply application guide for portable equipment." MAXIM Integrated Products. 1994. 131 A.C Wang‚ S.R.Sanders. "Programmed pulsewidth modulator waveforms for electromagnetic interference mitigation in DC-DC converters." IEEE Trans. on Power Electronics‚ Vo1.8. No 4. Oct.93‚ pp.596605 [I] Fig. 13 Unmodulated switching frequency spectrum of the output voltage Fig. 14. Modulated
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B.Tech Project‚ 2011 Indian Institute Of Technology‚ Gandhinagar MODULATION CHARACTERISTIC OF A SEMICONDUCTOR LASER DIODE Project Guide Prof. Arup Lal Chakraborty Department of Electrical Engineering Submitted by Vivek Maheshwary (0800206) Department of Electrical Engineering 27th November‚ 2011 ACKNOWLEDGEMENT I would like to express my sincere gratitude to
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Advanced Optical Modulation Formats in High-speed Lightwave System by Sen Zhang Submitted to the Department of Electrical Engineering and Computer Science and the Faculty of the Graduate School of the University of Kansas in partial fulfillment of the requirements for the degree of Master of Science _________________________________ Professor in Charge _________________________________ _________________________________ Committee Members ________________________ Date thesis accepted
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tonic. The relationship between the sonatas of a pair is either one of contrast or of complement. Classical Sonata Exposition: First theme Tonality Scarlatti Sonata Tonic ( modulation to Dominant) First Half: opening‚ continuation‚ transition Second theme Dominant Crux: Closing tonal section Development: Modulation (starting with Dominant) Recapitulation: First theme Tonic Opening‚ excursion Second theme Tonic Crux: Restatement of closing tonal section Second half: modulatory excursion
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I see that as a good analogy and I understand that the OSI model is broken down into seven layers and each layer has a job to do I was wondering which of these layers would be most important in developing security protocols for my company? Since no one else answered this one I thought I would take a stab at what I would say to my “potential client” if I was asked this very legitimate question during my hypothetical meeting. Here goes: When it comes to developing security protocols for your organization
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Unit 5 – BB1 – Ferret Out Silliness I’ve chosen a study that researches the relationship between attachment and sensory modulation in children. Their research question is‚ “Is the health of the attachment relationship in these children predictive of their sensory modulation function?” As a correlation study a non-experimental design was used. Participants were recruited using convenience sampling with a mean age of 51 months‚ including 38 girls and 30 boys. Measurements used; Attachment Q-Set
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