MATLAB XPC TARGET 4 - IO Manual do Utilizador Página 1

ModelingSimulationImplementationxPC Target For Use with Real-Time Workshop ®Selecting Hardware GuideVersion 1.1

1 Introduction1-4Selecting a Target SystemSelecting a target system for your real-time application consists of three major steps: selecting the form f

Selecting a Target System1-5Computer hardware manufacturers provide thorough guidelines for installation and use of their equipment. You should consid

1 Introduction1-6Selecting I/O BoardsAfter selecting the form factor for a system, you need to choose the I/O boards that will connect the target PC t

Selecting a Target System1-7Some base systems can accept different I/O form factors by using adapter boards or cards:a — passive PC/104 to ISA adapter

1 Introduction1-8ISA Large selection of generic I/O typesBus is slow, uses 8MHz bus speedManual jumper and DIP-switch settings on the boardModern desk

Selecting a Target System1-9If you need to use a number of form factors throughout a project, we recommend that you use PMC I/O boards because you can

1 Introduction1-10Suggested Method for Selecting I/O BoardsYou can determine which specific boards with the desired I/O form factor are supported by x

Selecting a Target System1-11The interactive selection guide is a Web-based guide that allows you to give selection criteria for the kind of I/O board

1 Introduction1-12You can select entries for as many or as few of these parameters as you want. The fewer parameters you select, the larger the list o

Selecting a Target System1-13Each line has the following columns:Manufacturer — Board manufacturer. This entry typically contains a link to the manufa

How to Contact The MathWorks:www.mathworks.com Webcomp.soft-sys.matlab Newsgroup www.mathworks.com/contact_TS.html Technical support suggest@mathwor

1 Introduction1-14as the base time plus a channel time multiplied by the number of D/A channels (N) being used by the xPC Target application.Digital I

Selecting a Target System1-152 Press the Find button.The interactive selection guide returns output like the following:Example 41 To obtain a list of

1 Introduction1-16Interactive Hardware Selection Guide lists show relevant I/O types that are supported. Be sure to use this as a way to minimize the

Selecting a Target System1-17therefore important to choose a CPU from a class that is powerful enough to provide sufficient performance headroom. The

1 Introduction1-184 Visit the benchmark page of the xPC Target Product area at http://www.mathworks.com/support/product/XP/productnews/benchmarks.html

Selecting a Target System1-19sample times. In this case, contact your MathWorks sales representative to discuss your application.

1 Introduction1-20

2Form FactorsEach of the PC-compatible form factors presented in the following sections has advantages and disadvantages. You should carefully read t

2 Form Factors2-2Desktop PCThe desktop PC is the ideal choice for a clean, climate-controlled environment with no space limitations, no vibration or m

Desktop PC2-3PerformanceAs the impact of the CPU cost on the entire configuration is small, we recommend you use the highest performance CPU architect

Revision HistoryFebruary 2003 Online only Updated for Version 1.1April 2005 Online only Updated for Version 1.1June 2005 Online only Updated for Versi

2 Form Factors2-4AdvantagesThe advantages of selecting a desktop PC computer for your target PC are• Highest performance-to-cost ratio• Widely availab

Rack-Mount or Industrial PC2-5Rack-Mount or Industrial PCThe industrial PC system consists of a standardized industrial chassis (19'', 4U, 6

2 Form Factors2-6The backplane is normally manufactured using thicker PCI boards than found in desktop PCs. These thicker boards result in better mech

Rack-Mount or Industrial PC2-7PerformanceThe CPU boards (SBCs) are usually available with high-performance CPUs (Intel Pentium III, AMD Athlon) that a

2 Form Factors2-8AdvantagesThe advantages of selecting a rack-mount or industrial PC computer for your target PC are• High performance• Highest I/O ex

CompactPCI2-9CompactPCICompactPCI is an adaptation of the PCI specification for industrial computer applications requiring a smaller, more robust mech

2 Form Factors2-10A CompactPCI system consists of a standardized industrial chassis (19'', 3U, 6U) and a passive or active backplane with up

CompactPCI2-11A CompactPCI is a good alternative to the desktop PC or rack-mount PC when• Space is limited — CompactPCI systems are usually smaller th

2 Form Factors2-12Many vendors of PCI I/O boards offer a compatible board in the CompactPCI form factor. Nevertheless, the range of available CompactP

CompactPCI2-13DisadvantagesThe disadvantages of selecting a CompactPCI computer for your target PC are• High acquisition costs• Limited CPU performanc

2 Form Factors2-14PC/104 and PC/104+PC/104 and PC/104+ is a PC-compatible computer designed especially for embedded applications. This section include

PC/104 and PC/104+2-15The PC/104 bus connector pins are extended to the top and bottom of the board. This type of connector pin configuration allows y

2 Form Factors2-16PC/104 stacks are the right choice in the following situations:• Where there are extreme space limitations, such as in mobile applic

PC/104 and PC/104+2-17the maximum achievable CPU performance of a PC/104 stack is significantly lower than that of a desktop PC, rack-mount PC, or Com

2 Form Factors2-18• Low power consumption and fanless options readily available• Good I/O expandability• Moderate acquisition costsDisadvantagesThe di

All-In-One Embedded PC2-19All-In-One Embedded PCThe all-in-one embedded PC computer form factor is very similar to PC/104, but overcomes a major disad

2 Form Factors2-20This system includes chassis, enclosure, connector breakouts, and an internal power supply. All-in-one embedded systems are designed

All-In-One Embedded PC2-21AdvantagesThe advantages of selecting an all-in-one embedded PC are• Very small and ideal for mobile applications• Rugged sy

2 Form Factors2-22Laptop PCThe MathWorks does not recommend using a laptop PC as the target platform. The reasons include:• You can only expand the fu

Index-1IndexAadvantagesall-in-one embedded PC 2-21compactPCI 2-12desktop PC 2-4industrial PC 2-8PC/104 and PC/104+ 2-17all-in-one embedded PCadvantage

iContents1IntroductionWhat Is xPC Target? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2xPC Target . . . . . . . . . . .

IndexIndex-2compactPCI 2-11desktop PC 2-3industrial PC 2-7PC/104 and PC/104+ 2-17industrial PCadvantages 2-8disadvantages 2-8I/O expandability 2-7intr

IndexIndex-3overview 1-2, 2-1

IndexIndex-4

ii ContentsCompactPCI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9Overview of CompactPCI Computers . . .

1IntroductionWith xPC Target, there are literally thousands of possible combinations of form factors, I/O boards, and CPUs. Your unique application-s

1 Introduction1-2What Is xPC Target?xPC Target is a solution for prototyping, testing, and deploying real-time systems using standard PC hardware. It

What Is xPC Target?1-3xPC Target Embedded OptionThe xPC Target Embedded Option extends xPC Target to enable you to deploy small numbers of systems on