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Visa and MasterCard are renewing a push to speed the adoption of microchips into U.S. credit and debit cards in the wake of recent high-profile data breaches, including this week's revelation that hackers stole consumer data from eBay's computer systems. Card processing companies argue that a move away from the black magnetic strips on the backs of credit cards would eliminate a substantial amount of U.S. credit card fraud. They say it's time to offer U.S. consumers the greater protections microchips provide by joining Canada, Mexico and most of Western Europe in using cards with the more advanced technology.
The purpose of this document is to describe RF PCB design guidelines and circuit optimization techniques to enable the designer to implement successful, right-first-time, PCB layouts and to ensure trouble free circuit optimization, using the same criteria as those employed by Semtech for the reference designs of the XE/SX1200 family of RF ISM band integrated circuits.1 This application note describes step by step techniques for ensuring the correct PCB layout and subsequent design optimization steps for each circuit block of the RF integrated circuit architecture. ...Figure 2: 4-Layer PCB Build-Up Placing a distributed power plane between 2 ground plane layers enables an evenly distributed RF decoupling capacitance between the supply and ground. In addition, the power plane provides a very low impedance trace at radio frequencies. The power plane should be surrounded by a ground trace or vias that connect the two ground traces together, thus preventing any radiated emissions at the board edge. From the above figure, the power plane is suppressed at the final stage of the TX matching network to prevent any parasitic coupling caused by radiated and reflected energy at this stage. A 4 or multilayer PCB layout lends itself should an additional RF Power Amplifier be required (for example to take advantage of the transmit power allowances of FCC Part 15.247). Generally speaking, the power supply of the PA will be the (unintentionally) noisiest PCB trace. A multi-layer approach allows for a separate low impedance power supply plane for the PA, while allowing for a continuous grounding strategy. Alternatively, separate ground and power supply layers that can be ...
The Pierce oscillator (most common case) implemented in microcontrollers is built up around a class A amplifier and a narrow band filter such as a crystal or a ceramic resonator as shown in Figure 1-1. Figure 1-1. Typical Crystal/Resonator Oscillator. Vdd CXtalin Amplifier Xtalin Crystal Resonator CXtalout Microcontrollers Xtalout Vss This device has a high input impedance characteristic outside of the resonance frequency range and has a low input impedance characteristic at the oscillation frequency. The high impedance characteristic degrades its immunity when an electrical field is applied in its vicinity. Furthermore, in the latest technology and also in order to reduce the consumption, the oscillation level is restricted to within the range of 1 volt, again increasing the susceptibility. 8128A–AVR–03/08
Ball grid array (BGA) packages having 0.4mm ball pitch require careful attention to printed circuit board (PCB) design parameters to successfully yield reliable and robust assemblies; the standard rules of thumb don’t apply anymore. In fact, the design guidelines for 0.4mm and 0.5mm differ primarily due to issues surrounding shorts or opens between balls under the processor. In addition to the design rules, fine-pitch board design is a team effort. Close coordination and communication between the device supplier, the PCB designer, the board fabricator, and the assembly shop is mandatory. The following factors have a major effect on the quality and reliability of PCB assembly: pad design, via-in-pad (VIP) guidelines, via finishing, stencil design, solder paste requirements, solder paste deposition and reflow profile. This application report provides a starting point for understanding the current set of guidelines. It is strongly recommended that you perform actual studies in conjunction with your assembly house and board supplier to optimize the process.
CONTENTS CHAPTER I Introduction to Computer Numerical Control Manufacturing I —I Chapter Objectives 1 2 Introduction — I I 1 3 Numerical Control Definition, Its Concepts and Advantages — I 1-4 Definition of Computer Numerical Control and Its Components 1-5 Advantages of CNC Compared with NC 4 1 6 Special Requirements for Utilizing CNC 4 — 1-7 Financial Rewards of CNC Investment 5 1 8 CNC Machining Centers and Turning Centers — 1-9 Other Types of CNC Equipment I —10 CNC Input and Storage Media I-11 Chapter Summary 6 8 8 II Review Exercises CHAPTER 1 13 Modern Machine Tool Controls 2-1 Chapter Objectives 2-2 Introduction 13 13 2-3 Different Types of System Control 13 2—4 Loop Systems f o r Controlling Tool Movement 16 2—5 Establishing Locations via Cartesian Coordinates 2-6 CNC Machine Axes of Motion 2-7 Types ofTool Positioning Modes 24 2-8 Units Used for Positioning Coordinates 2—9 Chapter Summary 19 20 25 25 Review Exercises CHAPTER 3 Too/ing for Hole and Milling Operations 3-1 Chapter Objectives 3—2 Introduction 32 32 32 3-3 Tooling for Drilling Operations 32 XI xii Contents 3 4 Carbide Insert Technology — 37 3 5 Tooling for Hole Operations That Follow Drilling — 3-6 Tool Speeds and Feeds for Hole Operations 41 3—7 Tooling for Profile Milling and Facing Operations 3-8 Coated Tooling 38 44 48 3-9 Tool Speeds and Feeds for Milling Operations 3-10 Feed Directions for Milling Operations 3-11 Cutting Fluids for CNC Operations 3-12 Chapter Summary 49 51 52 54 Review Exercises CHAPTER 4 Exploring Features of CNC Machining Centers 4-1 Chapter Objectives 4-2 Introduction 56 56 56 4-3 Background on CNC Machining Centers 56 4—4 Tooling Systems Used with Automatic Tool Changers 4-5 Methods of Securing Tools in Tool Holders 60 62 4—6 Methods of Securing Tooling Systems to the CNC Spindle 4-7 Automatic Tool Changer Systems 4-8 Pallet Loading Systems 64 65 67 4-9 Features of the Machine Control Unit (MCU) Machining Centers 4—10 Chapter Summary 70 77 Review Exercises CHAPTERS Review of Basic Blueprint Reading for CNC Programmers 5-1 Chapter Objectives 5-2 Introduction 5-3 Sheet Sizes 80 80 80 5 4 Drawing Formats — 81 5 5 Interpreting Lines in Drawings — 87 5-6 Projection Conventions Used in Drawings 91 5-7 Visualizing 3D Objects from 2D Othographic Views 5-8 Auxiliary Views 93 5-9 Sectional Views 93 5-10 Reading Dimensions 93 5-11 Reading Threads and Thread Notes 115 5-12 Reading Surface Finish Symbols and Notes 5-13 Chapter Summary Review Exercises Bibliography 80 131 125 93 Contents xiii CHAPTER 6 Review of Basic Material for CNC Programmers 6-1 Chapter Objectives 6-2 Introduction Specifications 133 133 133 6-3 Reading Material Specifications 133 6-4 Understanding Heat Treatment Notes 6—5 Interpreting Surface Coating Notes 6-6 Chapter Summary 141 145 150 Review Exercises Bibliography CHAPTER 7 Review of Basic Geometric Dimensioning and Tolerancing for CNC Programmers 7-1 Chapter Objectives 7—2 Introduction 151 151 7-3 GDTTerminology 152 7—4 Part Form Controls 7-5 Datums 151 154 158 7-6 Part Profile Controls 159 7-7 Part Location, Orientation, and Runout Controls 7—8 Chapter Summary 166 159 < Review Exercises Bibliography CHAPTER 8 Mathematics 8-1 Chapter Objectives 8-2 Introduction for CNC Programming 168 168 8-3 Determining Sides of Right Triangles 8-4 Useful Angle Concepts 8—6 Oblique Triangles 168 169 8-5 Determining Angles of Right Triangles 173 175 8-7 KwikTrig Trigonometry/Geometry Software 8-8 Installation 168 175 176 8-9 Starting KwikTrig 8-10 Chapter Summary 176 178 Review Exercises CHAPTER 9 An Overview of CNC Shop Activities 9-1 Chapter Objectives 9-2 Introduction 182 182 182 xiv Contents 9-3 Essential CNC Shop Activities 9-4 Part Drawing Study 182 182 9—5 Methodizing o f Operations f o r C N C Machining Centers 9-6 Deciding on a CNC Machine 185 9-7 Methods of Holding the Part During Machining 9—8 Machining Determination 9-9 Cutting Conditions 186 193 194 9-10 Writing a Programming Manuscript 194 9-11 Inputting Programs to the Machine Control Unit 9-12 Setup Procedure 194 195 9-13 Debugging and Verifying the Program 9-14 Part Production 185 200 201 9-15 Chapter Summary 201 Review Exercises C H A P T E R 10 Word Address Programming 10-1 Chapter Objectives 10-2 Introduction 203 203 203 10-3 Programming Language Format 203 10-4 Programming Language Terminology 204 10-5 Arrangement of Addresses in a Block 205 10-6 Program and Sequence Numbers (O, N Codes) 10-7 Preparatory Functions (G Codes) 207 10-8 Dimension Words ( X . Y . Z . . . Codes) 10-9 Feed Rate (F Code)
Copyright DASSAULT SYSTEMES Case Study: Additional Features Design Intent Stages in the Process Advanced Sketcher Tools Multi-profile Pads and Sketches Reference Elements Revolved Features Shelling Thin Features Duration: Approximately 0.5 day Copyright DASSAULT SYSTEMES Lesson Content 4-1 CATIA V5 Fundamentals - Lesson 4: Additional Features Student Notes: Case Study: Additional Features Copyright DASSAULT SYSTEMES The case study for this lesson is the Handle Block used in the Drill Press assembly shown below. The Handle Block is part of the Handle Mechanism sub-assembly. This case study focuses on creating features that incorporate the design intent of the part. The Handle Block will consist of shafts, grooves, multi-profiles, fillets, chamfers, and a shell feature. Copyright DASSAULT SYSTEMES Case Study: Additional Features 4-2 CATIA V5 Fundamentals - Lesson 4: Additional Features Student Notes: Design Intent (1/2) The Handle Block must meet the following design intent requirements: The top portion and bottom portions of the model must be created as separate features. • The top portion of the model will be created as a shaft, the bottom section will be created as a multi-pad. XY plane The holes must created at an angle to the XY plane. Copyright DASSAULT SYSTEMES • Create the holes on the shaft surface and aligned to a user-defined plane. The plane is created at an angle to the XY plane. Creating the holes on a user-defined plane allows the angle to be changed as required. This gives more flexibility in the hole placement. Copyright DASSAULT SYSTEMES Case Study: Additional Features
PRODUCT PROFILE 4WD FILTER KIT P902855 Ford Ranger 2.5L & 3.0L Turbo Diesel WLAT & WEAT Protect your investment with heavy-duty 4WD filters from the diesel engine filtration experts. This Donaldson 4WD Filter kit for Ford Ranger 2.5L & 3.0L Turbo Diesel WLAT & WEAT contains the required air, oil and fuel filters and offers savings off the individual filter prices to present a real value add proposition to your vehicle or business. Donaldson recognises that not every 4WD is the same and many have modifications which is why we carefully list the original equipment part numbers as a cross reference in each kit listing. Please check the part numbers below to confirm this kit will suit the vehicle. KIT PART NUMBER: P902855 CONTENTS & SPECIFICATIONS: All the filters you need to service your vehicle in one package Product Image QTY P902609 Take advantage of savings Part Number 1 Description Air Primary when purchased in a kit Manufactured to meet or Specifications Height: 170 mm Ford Part: AFA184MC
Portabella Series Our extensive collection of 5-piece thermofoil doors is the result of our continuing commitment to provide innovative products to our discerning customers. Capitalizing on advances in materials and European technology, Northern Contours has lead the industry with glazed and 5-piece profile wrapped components. The Portabella Series includes French Miter, Traditional Miter and Shaker doors styles with glazed and raised panel options. This unique collection of door styles is produced in custom sizes and quantities and offers a host of appealing features: • Horizontal cross-rails have correct grain orientation for a more realistic appearance. • Profile wrapped stiles and rails assure a uniform appearance on the face and back of components. • Glazed doors are available in most styles providing a poplular designer look at very competitive prices. • Complete line of accessories and surface options are available to customize your kitchen, bath, closet or home office project. We hope you enjoy these very durable and inviting new products. French Miter Styles Summerflame - 2013 Rustic Cherry - 2081 Candlelight - 2078 Bisque - 0150 Flat Panel with Glaze Raised Panel with Glaze Flat Panel with Glaze Raised Panel with Glaze Traditional Miter Styles Summerflame - 2013 Raised Panel with Glaze Blonde Maple - 2006 Bisque - 0150 Flat Panel Raised Panel with Glaze Shaker Styles Rustic Cherry - 2081 Rustic Cherry - 2081 Flat Panel Raised Panel Portabella Series
A co-educational school in Jumeira, Dubai, JBS is a truly international school, offering The International Primary Curriculum (IPC), International General Certificate of Secondary Education (IGCSE)
With the release of Apple’s iOS 7, if you have deployed XenMobile MDM or Enterprise edition, you will need to perform a minor update to the Device Manager server. If you have deployed XenMobile App or Enterprise (and if you use apps from the Citrix App Galley), you will need to rewrap your iOS apps using the MDX Toolkit version 2.1 and upload those iOS apps to the App Controller management console. Specifically, to update XenMobile for iOS 7, you need to perform the following tasks: • MDM or Enterprise Users Update the Device Manager o To enroll new iOS7 devices with Device Manager you will need to use latest Enroll and WorxHome apps from Apple iTunes app store, version 8.5.2. • XenMobile App or Enterprise Users (Non-MDM users) Rewrap your MDX wrapped iOS apps and upload them to App Controller, which requires that you: o Create a new iOS provisioning profile (Optional – only needed if you do not already have one and only for XenMobile App users.) o Rewrap your iOS apps using the new version of the MDX Toolkit 2.1. o Upload rewrapped iOS apps to App Controller. o Deploy apps to users. Page 1 Known Issue: Password compliance detection issue with iOS 7 As many of you have seen, an issue with the new iOS7 operating system affects the Password Compliance status with XenMobile MDM server. When a device is locked the compliance status is set to out of compliance. The consequences are the following: •