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Ill[S ADJUSTMENTS
B249 DATA TRANSMISSION CONTROL UNIT INTRODUCTION AND OPERATION Burroughs FUNCTIONAL DETAIL FIELD ENGINEERING CIRCUIT DETAIL lJrn~[}{] ~ D~ill[s ADJUSTMENTS MAINTENANCE ~ ill ~ OD ill [S PROCEDURES INST ALLAT ION PROCEDURES RELIABILITY IMPROVEMENT NOTICES OPTIONAL FEATURES MODIFICATIONS (BRANCH LIBRARIES) Printed in U.S. America 9-15-66 Form 1026259 Burroughs - B249 Data Transmission ~echnical Manual I N D E X INTRODUCTION & OPERATION - SECTION I Page No. B249 Data Transmission Control Unit - General Descript ion . 1 Glossary - Data Transmission Terminal Unit and MCU. 5 Glossary - DTCU & System . 3 Physical De$cr1ption . 2 FUNCTIONAL DETAIL - SECTION II B300 Active Interrogate. · . · . · · 57 B300 Data Communications Read. · · . · · · · 62 B300 Data Communications Write · · . 78 B300 Passive Interrogate · · 49 VB300 Passive Interrogate - ITU (B486) Mode · . 92 v13300 Read - ITU (B486) Mode. · · . · · . · . 95 V'B300 Write - ITU (13486) Mode · · . · · 108 B5500 Data Communications Interrogate. · . 1 B5500 Data Communications Read . · 9 B5500 Data Communications Write. · 21 CIRCUIT DETAIL - SECTION III "AU Register Load - (Normal & Reverse) 1 Clock Control. ... 11 Scan . 3 Translator . 4 ADJUSTMENTS - SECTION IV Clock Adjustments ..... 1 Variable Bias Adjustment . 1 MAINTENANCE PROCEDURES - SECTION V Maintenance Panel ... 1 INSTALLATION PROCEDURES - SECTION VI DTCU Installation. 1 Pluggable Options. 2 Power ON . 3 Special Inquiry Terminal Connection .. 2 NOTE: Pages for Sections VII, VIII and IX will be furnished when applicable. Printed in U. S. America Revised 4/1/67 For Form 1026259 Burroughs - B249 Data Transmission Technical Manual Sec, I Page 1 Introduction & Operation B249 DATA TRANSMISSION CONTROL UNIT - GENERAL DESCRIPTION The B249 DTCU is required when: 1. More than one B487 DTTU is used on a single Processing System. -
Relink Eo 3-11-97
CHAPTER 1 COMMUNICATIONS As an Aviation Electronics Technician, you will be communication circuits. These operations are accom- tasked to operate and maintain many different types of plished through the use of compatible and flexible airborne communications equipment. These systems communication systems. may differ in some respects, but they are similar in many Radio is the most important means of com- ways. As an example, there are various models of AM municating in the Navy today. There are many methods radios, yet they all serve the same function and operate of transmitting in use throughout the world. This manual on the same basic principles. It is beyond the scope of will discuss three types. They are radiotelegraph, this manual to discuss each and every model of radiotelephone, and teletypewriter. communication equipment used on naval aircraft; therefore, only representative systems will be discussed. Every effort has been made to use not only systems that Radiotelegraph are common to many of the different platforms, but also have not been used in the other training manuals. It is Radiotelegraph is commonly called CW (con- the intent of this manual to have systems from each and tinuous wave) telegraphy. Telegraphy is accomplished every type of aircraft in use today. by opening and closing a switch to separate a continuously transmitted wave. The resulting “dots” and “dashes” are based on the Morse code. The major RADIO COMMUNICATIONS disadvantage of this type of communication is the relatively slow speed and the need for experienced Learning Objective: Recognize the various operators at both ends. types of radio communications. -
The Marriage That Almost Was Western Union Has Always Been R.Idiculed for Rejecting the All Telephone
RETROSPECTIVE .Innovation The marriage that almost was Western Union has always been r.idiculed for rejecting the telephone. But what actually happened wasn't so ridiculous after all The hirth of the telephone.,-one hundred years ago railway and illuminating gas to Cambridge, Mass. this month-is a fascinating story of the geJ;Jius and Long intrigued by telegraphy, he decided to do persistence of on.e man. In addition, it is an instruc something about what he called "this monopoly tive demonstration of how an industrial giant, in with its inflated capital which serves its stockhold this case the Western Union Telegraph Co., can ers better than the 'public and whose:rates are ex miss its chance to foster an industry-creating orbitant and prohibiting of many kinds of busi breakthrough-something that has happened again ness." Between 1868 and 1874, he lobbied unceas and again in electronics and other fields. ingly, shuttling back and forth betweep. homes in Between ·1875 and 1879, Western Union's chiefs Boston and Washington. for a private "postal tele engaged in an intricate minuet with Alexander graph company" to be chartered by Congress but Graham Bell and his associates. On more than one with Hubbard and some of his friends among the occasion, the telegraph colossus came excruciating incorporators. As Hubbard envisioned it, the com ly close to absorbing the small group of ~ntre pany would build telegraph lines along the nation's preneurs, That the absorption was finally avoided rail and post roads and contract with the Post was probably the result of a technological gamble Office Department to send telegrams on its wires ~t that simply didn't payoff, as rates roughly half those being charged by Western ••• The place: the ollie of well as a clash of personali Union. -
Imaginary Aesthetic Territories: Australian Japonism in Printed Textile Design and Art
School of Media Creative Arts and Social Inquiry (MCASI) Imaginary Aesthetic Territories: Australian Japonism in Printed Textile Design and Art Kelsey Ashe Giambazi This thesis is presented for the Degree of Doctor of Philosophy of Curtin University July 2018 0 Declaration To the best of my knowledge and belief this thesis contains no material previously published by any other person except where due acknowledgment has been made. This thesis contains no material which has been accepted for the award of any other degree or diploma in any university. Signature: Date: 15th July 2018 1 Acknowledgements I would like to sincerely express my thanks and gratitude to the following people: Dr. Ann Schilo for her patient guidance and supervisory assistance with my exegesis for the six-year duration of my candidacy. To learn the craft of writing with Ann has been a privilege and a joy. Dr. Anne Farren for her supervisory support and encouragement. To the staff of the Curtin Fashion Department, in particular Joanna Quake and Kristie Rowe for the daily support and understanding of the juggle of motherhood, work and ‘PhD land’. To Dr. Dean Chan for his impeccably thorough copy-editing and ‘tidying up’ of my bibliographical references. The staff in the School of Design and Art, in particular Dr. Nicole Slatter, Dr. Bruce Slatter and Dr. Susanna Castleden for being role models for a life with a balance of academia, art and family. My fellow PhD candidates who have shared the struggle and the reward of completing a thesis, in particular Fran Rhodes, Rebecca Dagnall and Alana McVeigh. -
Ascii, Baudot, and the Radio Amateur
ASCII, BAUDOT AND THE RADIO AMATEUR George W. Henry, Jr. K9GWT Copyright © 1980by Hal Communications Corp., Urbana, Illinois HAL COMMUNICATIONS CORP. BOX365 ASCII, BAUDOT, AND THE RADIO AMATEUR The 1970's have brought a revolution to amateur radio RTTY equipment separate wire to and from the terminal device. Such codes are found in com and techniques, the latest being the addition of the ASCII computer code. mon use with computer and line printer devices. Radio amateurs in the Effective March 17, 1980, radio amateurs in the United States have been United States are currently authorized to use either the Baudot or ASCII authorized by the FCC to use the American Standard Code for Information serial asynchronous TTY codes. Interchange(ASCII) as well as the older "Baudot" code for RTTY com munications. This paper discusses the differences between the two codes, The Baudot TTY Code provides some definitions for RTTY terms, and examines the various inter facing standards used with ASCII and Baudot terminals. One of the first data codes used with mechanical printing machines uses a total of five data pulses to represent the alphabet, numerals, and symbols. Constructio11 of RTTY Codes This code is commonly called the Baudot or Murray telegraph code after the work done by these two pioneers. Although commonly called the Baudot Mark Ull s,.ce: code in the United States, a similar code is usually called the Murray code in other parts of the world and is formally defined as the International Newcomers to amateur radio RTTY soon discover a whole new set of terms, Telegraphic Alphabet No. -
Teletypewriter Communication Codes
Teletypewriter Communication Codes Gil Smith [email protected] 2001 (Document Notes) Abstract Preliminary -- 5/01 gil smith Corrections or comments to [email protected] This information is pulled from a variety of sources, such as various emails of the greenkeys group. For more discussion of teletypewriter code development, see: http://www.nadcomm.com/fiveunit/fiveunits.htm http://fido.wps.com/texts/codes/index.html http://www.science.uva.nl/faculteit/museum/DWcodes.html FIVE-UNIT CODES: USTTY and ITA2 (aka BAUDOT) There were a few variations in character codes for five-level teletypewriter machines. The two most-common character codes were ITA2 and USTTY (a variation of ITA2). The USTTY and ITA2 5-level teletypewriter codes are commonly referred to as "Baudot" codes. While this is technically incorrect, these popular 5-level codes evolved from the work of Jean Maurice Emile Baudot of France - - it seems fitting to accept the defacto reference to "Baudot" as implying USTTY or ITA2 codes, since they were the 5-level codes that saw practical use in teletypewriter systems. However, the true Baudot code dates to around 1874, when Baudot designed the "Baudot Multiplex System," a printing telegraph. The system used a 5-level code generated by a device with five keys, operated with two left-hand fingers, and three right-hand fingers -- this required great skill on the part of the operator who entered the code directly. However, it was still a major improvement in communications -- prior to Baudot's design, communication was carried out using Morse code with a telegraph key. The 5-level "Baudot" code was actually designed by Johann Gauss and Wilhelm Weber. -
Galvanic Isolation System with Wireless Power Transfer for Multiple Gate Driver Supplies of a Medium-Voltage Inverter Paper
電気学会論文誌●(●●●●●●●部門誌) IEEJ Transactions on ●●●●●●●●●●●●●●● Vol.●● No.● pp.●-● DOI: ●.●●/ieejeiss.●●.● Paper Galvanic Isolation System with Wireless Power Transfer for Multiple Gate Driver Supplies of a Medium-voltage Inverter * * * Keisuke Kusaka , Student member, Koji Orikawa, Member , Jun-ichi Itoh, Member a) ** ** ** Isamu Hasegawa , Non-member, Kazunori Morita , Member, Takeshi Kondo , Non-member (Manuscript received Jan. 00, 20XX, revised May 00, 20XX) In this paper, a gate driver supply, which supplies power to multiple gate drivers, is demonstrated. Robust isolation is required in the gate drive supplies of a medium-voltage inverter in order to drive high-voltage switching devices such as insulated-gate bipolar transistors. The proposed isolation system achieves isolation with transmission coils mounted on printed circuit boards. Furthermore, the isolation system transmits power from one transmitting board to six receiving boards. In the conventional system, the number of receivers is limited to one. In contrast, multiple receivers are acceptable in the proposed system. These characteristics help reduce the of the isolation system for the gate driver supplies. This paper presents the fundamental characteristics of the isolation system. The equivalent circuit of the proposed system can be derived by applying the equivalent circuit of a wireless power transfer system with a repeater coil. In addtion, a design method for the resonance capacitors is mathematically introduced using the equivalent circuit. It is verified that an isolation system with multiple receivers can be designed using the same resonance conditions as an isolation system with a single receiver. Moreover, the isolation system is experimentally demonstrated. It is confirmed that the isolation system transmits power with a maximum efficiency of 46.9% at an output power of 16.6 W beyond an air gap of 50 mm with only printed circuit boards. -
A History of Audio Effects
applied sciences Review A History of Audio Effects Thomas Wilmering 1,∗ , David Moffat 2 , Alessia Milo 1 and Mark B. Sandler 1 1 Centre for Digital Music, Queen Mary University of London, London E1 4NS, UK; [email protected] (A.M.); [email protected] (M.B.S.) 2 Interdisciplinary Centre for Computer Music Research, University of Plymouth, Plymouth PL4 8AA, UK; [email protected] * Correspondence: [email protected] Received: 16 December 2019; Accepted: 13 January 2020; Published: 22 January 2020 Abstract: Audio effects are an essential tool that the field of music production relies upon. The ability to intentionally manipulate and modify a piece of sound has opened up considerable opportunities for music making. The evolution of technology has often driven new audio tools and effects, from early architectural acoustics through electromechanical and electronic devices to the digitisation of music production studios. Throughout time, music has constantly borrowed ideas and technological advancements from all other fields and contributed back to the innovative technology. This is defined as transsectorial innovation and fundamentally underpins the technological developments of audio effects. The development and evolution of audio effect technology is discussed, highlighting major technical breakthroughs and the impact of available audio effects. Keywords: audio effects; history; transsectorial innovation; technology; audio processing; music production 1. Introduction In this article, we describe the history of audio effects with regards to musical composition (music performance and production). We define audio effects as the controlled transformation of a sound typically based on some control parameters. As such, the term sound transformation can be considered synonymous with audio effect. -
Cit 305: Networking and Communication Technology
CIT 305: NETWORKING AND COMMUNICATION TECHNOLOGY 1 NATIONAL OPEN UNIVERSITY OF NIGERIA FACULTY OF SCIENCE DEPARTMENT OF COMPUTER SCIENCE COURSE CODE: CIT305 COURSE TITLE: NETWORKING AND COMMUNICATION TECHNOLOGY 2 COURSE GUIDE CIT305 NETWORKING AND COMMUNICATION TECHNOLOGY CourseTeam Prof A.S. Sodiya (Developer/Writer)–FUNAAB Dr. A. A. Afolorunso (Coordinator)-NOUN 3 CONTENTS PAGE Introduction........................................................................................ 1 WhatYouWillLearnin ThisCourse................................................ 1 Course Aims...................................................................................... 1 CourseObjectives…………………………………………….……. 1 WorkingthroughThisCourse............................................................ 2 CourseMaterials................................................................................. 2 2 StudyUnits........................................................................................ AssignmentFile.................................................................................. 3 Tutor-MarkedAssignments(TMAs)................................................. 3 ExaminationandGrading................................................................... 4 PresentationSchedule........................................................................ 4 CourseMarkingScheme.................................................................... 5 CourseOverview…………………………………………………… 5 Howto Getthe MostfromThisCourse........................................... -
Introduction to Computer Data Representation
Introduction to Computer Data Representation Peter Fenwick The University of Auckland (Retired) New Zealand Bentham Science Publishers Bentham Science Publishers Bentham Science Publishers Executive Suite Y - 2 P.O. Box 446 P.O. Box 294 PO Box 7917, Saif Zone Oak Park, IL 60301-0446 1400 AG Bussum Sharjah, U.A.E. USA THE NETHERLANDS [email protected] [email protected] [email protected] Please read this license agreement carefully before using this eBook. Your use of this eBook/chapter constitutes your agreement to the terms and conditions set forth in this License Agreement. This work is protected under copyright by Bentham Science Publishers to grant the user of this eBook/chapter, a non- exclusive, nontransferable license to download and use this eBook/chapter under the following terms and conditions: 1. This eBook/chapter may be downloaded and used by one user on one computer. The user may make one back-up copy of this publication to avoid losing it. The user may not give copies of this publication to others, or make it available for others to copy or download. For a multi-user license contact [email protected] 2. All rights reserved: All content in this publication is copyrighted and Bentham Science Publishers own the copyright. You may not copy, reproduce, modify, remove, delete, augment, add to, publish, transmit, sell, resell, create derivative works from, or in any way exploit any of this publication’s content, in any form by any means, in whole or in part, without the prior written permission from Bentham Science Publishers. 3. The user may print one or more copies/pages of this eBook/chapter for their personal use. -
GOLD SILVER BRONZE Webcasting Services for Events
noº 3 GOLD SILVER BRONZE webcasting services for events wecreate. wedeliver. connect inform engage inspire change www.world-television.com [email protected] 020 7243 7350 LONDON / GENEVA / MADRID / FRANKFURT / BARCELONA / ZURICH Welcome Contents In the early days of brand development in the 04 Meet the judges Middle East and North Africa, the pervading 06 The winners trend was to apply the brand name in an Arabic-esque script and implement a stylised The Awards version of the building architecture or brand logo as part of the wordmark. The industry Content has since developed to embrace a more diverse, modern and strategic approach 9 Best use of a visual property to branding. 12 Best brand architecture solution Winners at the Transform Awards MENA 13 Best use of copy style/tone of voice 2016 exemplify excellence in achieving this. 15 Best brand experience The ‘Best overall visual identity’ award goes 16 Best use of packaging to DuBox and Latitude for a rebrand that not 17 Best use of audio branding webcasting services for events only shaped the future of the company itself, 18 Best use of typography but took its cues from the modular design 19 Best place or nation brand and construction techniques it employs. This allowed the brand to become more relevant to Process the audiences it is trying to reach. The Grand Prix winner, Jawwy from STC and Lippincott, 20 Best external stakeholder relations during a brand development project is a fresh, young and stylish brand that has Best internal communications during a brand development project a defined tone of voice and visual style that 21 Best implementation of a brand development project differentiates it from its sector. -
Telephone – Inventions That Revolutionized the World
Telephone – Inventions that Revolutionized the World December 14, 2018 First Publication Date: 27th November 2010 The most common devices used for transmitting the voice signal over a greater distance are pipes and other physical mechanical media. All of us as a child must have used this form for communication. Another device used for centuries for voice communication is lover’s phone or tin can telephone. The classic example is the children’s toy made by connecting the bottoms of two paper cups, metal cans, or plastic bottles with string. But the invention which changed the entire scenario of the communication is the telephone. It revolutionized the entire communication system. People could hear the voice of their loved ones staying miles away. Telephone comes from the Greek word tele, meaning from afar, and phone, meaning voice or voiced sound. Generally, a telephone is any device which conveys sound over a distance During the second half of the 19th century many well-known inventors were trying to develop an acoustic telegraphy for economic telegraph messages which included Charles Bourseul, Thomas Edison, Antonio Meucci, Johann Philipp Reis, Elisha Gray, and Alexander Graham Bell. The ‘speaking telegraph’ or in simple terms ‘telephone’ emerged from the creation and gradual improvement of telegraph. The invention of telephone has been one of the most disputed facts of all time. Credit for the invention of the electric telephone is never an ending dispute and new controversies over the issue keeps arising from time-to-time. The Elisha Gray and Alexander Bell controversy raises the question of whether Bell and Gray invented the telephone independently and, if that’s not true, then whether Bell stole the invention from Gray.