2521中英文资料

Features

?Low cost fiber optic components ?Enhanced digital links dc-5 MBd

?Extended distance links up to 120 m at 40 kBd ?Low current link: 6 mA peak supply current ?Horizontal and vertical mounting ?Interlocking feature ?High noise immunity ?Easy connectoring

Simplex, Duplex, and Latching connectors ?Flame retardant

?Transmitters incorporate a 660 nm Red LED for easy visibility

?Compatible with standard TTL circuitry

Applications

?Reduction of lightning/voltage transient susceptibility ?Motor controller triggering

?Data communications and local area networks ?Electromagnetic Compatibility (EMC) for regulated systems: FCC, VDE, CSA, etc.

?Tempest-secure data processing equipment ?Isolation in test and measurement instruments

?Error free signalling for industrial and manufacturing equipment

?Automotive communications and control networks ?Noise immune communication in audio and video equipment

Description

The Versatile Link series is a complete family of fiber optic link components for applications requiring a low cost solution. The HFBR-0501 series includes transmitters, receivers, connectors and cable specified for easy design. This series of components is ideal for solving problems with voltage isolation/insulation, EMI/RFI immunity or data security. The optical link design is simplified by the logic compat-ible receivers and complete specifications for each component. The key optical and electrical parameters of links configured with the HFBR-0501 family are fully guaranteed from 0° to 70°C.

A wide variety of package configurations and connectors provide the designer with numerous mechanical solutions to meet application requirements. The transmitter and receiver compo-nents have been designed for use in high volume/low cost assembly processes such as auto insertion and wave soldering.

Transmitters incorporate a 660 nm LED. Receivers include a monolithic dc coupled, digital IC receiver with open collector Schottky output transistor. An internal pullup resistor is available for use in the HFBR-25X1/2/4 receivers. A shield has been integrated into the receiver IC to provide additional,localized noise immunity.

Internal optics have been optimized for use with 1mm diameter plastic optical fiber. Versatile Link specifications incorporate all connector interface losses. Therefore, optical calculations for common

link applications are simplified.

HFBR-0501 Series

Versatile Link

The Versatile Fiber Optic Connection

Data Sheet

HFBR-0501 Series Part Number Guide

HFBR X5XX

1 = Transmitter

2 = Receiver

5 = 600 nm Transmitter and

Receiver Products

1 = 5 MBd High Performance Link

2 = 1 MBd High Performance Link

3 = 40 kBd Low Current/Extended Distance Link 2 = Horizontal Package

4 = 1 MBd Standard Link 3 = Vertical Package

6 = 155 MBd Receiver

7 = 155 MBd Transmitter

8 = 10 MBd High Performance Link

Evaluation Kit

HFBR-0501 1 MBd Versatile Link :

This kit contains: HFBR-1524 Tx, HFBR-2524 Rx, polishing kit, 3 styles of plastic connectors, Bulkhead feedthrough, 5 meters of 1 mm diameter plastic cable, lapping film and grit paper, and HFBR-0501 data sheet.

Application Literature

Application Note 1035 (Versatile Link)

VALOX ? is a registered trademark of the General Electric Corporation.

Package and Handling Information The compact Versatile Link package is made of a flame retardant VALOX ? UL 94 V-0material (UL file # E121562) and uses the same pad layout as a standard, eight pin dual-in-line package. Vertical and horizontal mountable parts are available.These low profile Versatile Link packages are stackable and are enclosed to provide a dust resistant seal. Snap action simplex, simplex latching,

duplex, and duplex latching connectors are offered with simplex or duplex cables.Package Orientation

Performance and pinouts for the vertical and horizontal packages are identical. To provide addi-tional attachment support for the vertical Versatile Link housing, the designer has the option of using a self-tapping screw through a printed circuit board into a mounting hole at

the bottom of the package. For most applications this is not necessary .

Package Housing Color

Versatile Link components and simplex connectors are color coded to eliminate confusion when making connections.

Receivers are blue and transmit-ters are gray, except for the HFBR-15X3 transmitter, which is black.

Link Selection Guide

(Links specified from 0 to 70°C, for plastic optical fiber unless specified.)

Signal Rate Distance (m) 25°C Distance (m)Transmitter

Receiver 40 kBd 120110HFBR-1523HFBR-25231 MBd 2010HFBR-1524HFBR-25241 MBd 5545HFBR-1522HFBR-25225 Mbd 3020

HFBR-1521HFBR-2521

Handling

Versatile Link components are auto-insertable. When wave soldering is performed with Versatile Link components, the optical port plug should be left in to prevent contamination of the port. Do not use reflow solder processes (i.e., infrared reflow or vapor-phase reflow). Nonhalogenated water soluble fluxes (i.e., 0% chloride), not rosin based fluxes, are recom-mended for use with Versatile Link components.

Versatile Link components are moisture sensitive devices and are shipped in a moisture sealed bag. If the components are exposed to air for an extended period of time, they may require a baking step before the solder-ing process. Refer to the special

labeling on the shipping tube for

details.

Recommended Chemicals for

Cleaning/Degreasing

Alcohols: methyl, isopropyl,

isobutyl. Aliphatics: hexane,

heptane, Other: soap solution,

naphtha.

Do not use partially halogenated

hydrocarbons such as 1,1.1

trichloroethane, ketones such as

MEK, acetone, chloroform, ethyl

acetate, methylene dichloride,

phenol, methylene chloride, or

N-methylpyrolldone. Also, Avago

does not recommend the use of

cleaners that use halogenated

hydrocarbons because of their

potential environmental harm.

Mechanical Dimensions Horizontal Modules

Vertical Modules

18.8 0.740

7.6 (0.30)

Versatile Link Printed Board Layout Dimensions

Horizontal Module

Vertical Module

Interlocked (Stacked) Assemblies (refer to Figure 1)

Horizontal packages may be stacked by placing units with pins facing upward. Initially engage the interlocking mechanism by sliding the L bracket body from above into the L slot body of the lower package. Use a straight edge,

such as a ruler, to bring all stacked units into uniform alignment. This technique prevents potential harm that could occur to fingers and hands of assemblers from the package pins. Stacked horizontal

packages can be disengaged if necessary. Repeated stacking and unstacking causes no damage to individual units.

To stack vertical packages, hold one unit in each hand, with the pins facing away and the optical ports on the bottom. Slide the L bracket unit into the L slot unit.The straight edge used for

horizontal package alignment is not needed.

Stacking Horizontal Modules

Figure 1. Interlocked (stacked) horizontal or vertical packages.

DIMENSIONS IN MILLIMETERS (INCHES).

Figure 2. Typical 5 MBd interface circuit.

Figure 4. Guaranteed system performance with improved cable (HFBR-15X1/25X1).

Figure 3. Guaranteed system performance with standard cable (HFBR-15X1/25X1).

5 MBd Link (HFBR-15X1/25X1)

Notes:

1.The propagation delay for one metre of cable is typically 5 ns.

2.Typical propagation delay is measured at P R = -15 dBm.

3.Estimated typical link life expectancy at 40°C exceeds 10 years at 60 mA.

Figure 5. 5 MBd propagation delay test circuit.

Figure 8. Typical link propagation delay vs.optical power.

Figure 7. Typical link pulse width distortion vs.optical power.

Figure 6. Propagation delay test waveforms.

t D – P U L S E W I D T H D I S T O R T I O N – n s

P R – INPUT OPTICAL POWER – dBm t p – P R O P A G A T I O N D E L A Y – n

R – INPUT OPTICAL POWER – dBm

Pin #Function 1Anode 2Cathode 3Open 4Open

5Do not connect 8Do not connect

Note: Pins 5 and 8 are for mounting and retaining purposes only. Do not electrically connect these pins.

HFBR-15X1 Transmitter

All HFBR-15XX LED transmitters are classified as IEC 825-1 Accessible Emission Limit (AEL) Class 1based upon the current proposed draft scheduled to go into effect on January 1, 1997. AEL Class 1 LED devices are considered eye safe. Contact your local Avago sales representative for more information.

Absolute Maximum Ratings

Notes:

1. 1.6 mm below seating plane.

2. Recommended operating range between 10 and 750 mA.

3. 1 μs pulse, 20 μs period.

Transmitter Electrical/Optical Characteristics 0°C to 70°C unless otherwise specified.

Notes:

1.Measured at the end of 0.5 m standard fiber optic cable with large area detector.

2.Optical power, P (dBm) = 10 Log [P(μW)/1000 μW].

3.Rise and fall times are measured with a voltage pulse driving the transmitter and a series connected 50 ? load. A wide bandwidth optical to electrical waveform analyzer, terminated to a 50 ? input of a wide bandwidth oscilloscope, is used for this response time measurement.

Figure 9. Typical forward voltage vs. drive current.Figure 10. Normalized typical output power vs. drive current.

V F – F O R W A R D V O L T A G E – V

21.8

1.6

1.4

I Fdc – TRANSMITTER DRIVE CURRENT (mA)101.7

1.5

100

70°C

25°C

0°C

P T – N O R M A L I Z E D O U T P U T P O W E R – d B

-5

-20

I Fdc – TRANSMITTER DRIVE CURRENT (mA)

100

-15

100

-10

Pin #Function 1V O

2Ground 3V CC 4R L

5Do not connect 8Do not connect

Note: Pins 5 and 8 are for mounting and retaining purposes only. Do not electrically connect these pins.

HFBR-25X1 Receiver

L CC O

Receiver Electrical/Optical Characteristics

Notes:

1.Optical flux, P (dBm) = 10 Log [P (μW)/1000 μW].

2.Measured at the end of the fiber optic cable with large area detector.

3.R L is open.

4.Pulsed LED operation at I F > 80 mA will cause increased link t PLH propagation delay time. This extended t PLH time contributes to increased pulse width distortion of the receiver output signal.

Notes:

1.1.6 mm below seating plane.

2.It is essential that a bypass capacitor 0.01 μF be connected from pin 2 to pin 3 of the receiver. Total lead length between both ends of the capacitor and the pins should not exceed 20 mm.

1 MBd Link

(High Performance HFBR-15X2/25X2, Standard HFBR-15X4/25X4)

System Performance Under recommended operating conditions unless otherwise specified.

Notes:

1.For I FPK > 80 mA, the duty factor must be such as to keep I Fdc≤80 mA. In addition, for I FPK > 80 mA, the following rules for pulse width apply:

I FPK≤160 mA: Pulse width ≤1 ms

I FPK > 160 mA: Pulse width ≤1 μS, period ≥20 μS.

2.The propagation delay for one meter of cable is typically 5 ns.

3.Estimated typical link life expectancy at 40°C exceeds 10 years at 60 mA.

4.Pulsed LED operation at I FPK > 80 mA will cause increased link t PLH propagation delay time. This extended t PLH time contributes to increased pulse

width distortion of the receiver output signal.

Figure 11. Required 1 MBd interface circuit.

Figure 15. Guaranteed system performance for the HFBR-15X2/25X2 Link with improved cable.

Figure 14. Guaranteed system performance for the HFBR-15X2/25X2 Link with standard cable.Figure 13. Guaranteed system performance for the HFBR-15X4/25X4 Link with improved cable.

Figure 12. Guaranteed system performance for the HFBR-15X4/25X4 Link with standard cable.I F – F O R W A R D C U R R E N T (m A )

– CABLE LENGTH – METRES I F – F O R W A R D C U R R E N T (m A )

– CABLE LENGTH – METRES

The HFBR-25X2 receiver can not be overdriven when using the required interface circuit shown in Figure 11.

Figure 17. Pulse width distortion vs. optical power.Figure 16. 1 MBd propagation delay test circuit.

Figure 19. Propagation delay test waveforms.

Figure 18. Typical link propagation delay vs.optical power.

t D – P U L S E W I D T H D I S T O R T I O N – n s

P R – INPUT OPTICAL POWER – dBm t p – P R O P A G A T I O N D E L A Y – n

P R – INPUT OPTICAL POWER – dBm

Pin #Function 1Anode 2Cathode 3Open 4Open

5Do not connect 8Do not connect

Note: Pins 5 and 8 are for mounting and retaining purposes only. Do not electrically connect these pins.

HFBR-15X2/15X4 Transmitters

Absolute Maximum Ratings

Notes:

1.1.6 mm below seating plane.

2.Recommended operating range between 10 and 750 mA.

3.1 μs pulse, 20 μs period.

Transmitter Electrical/Optical Characteristics 0°C to 70°C unless otherwise specified.

Note:

1. Rise and fall times are measured with a voltage pulse driving the transmitter and a series connected 50 ? load. A wide bandwidth optical to electrical waveform analyzer, terminated to a 50 ? input of a wide bandwidth oscilloscope, is used for this response time measurement.

Pin #Function 1V O

2Ground 3V CC 4R L

5Do not connect 8Do not connect

Note: Pins 5 and 8 are for mounting and retaining purposes only. Do not electrically connect these pins.

HFBR-25X2/25X4 Receivers

L CC O

Absolute Maximum Ratings

Notes:

1.1.6 mm below seating plane.

2.It is essential that a bypass capacitor 0.01 μF be connected from pin 2 to pin 3 of the receiver. Total lead length between both ends of the capacitor and the pins should not exceed 20 mm.

Notes:

1.Measured at the end of the fiber optic cable with large area detector.

2.Pulsed LED operation at I F > 80 mA will cause increased link t PLH propagation delay time. This extended t PLH time contributes to increased pulse width distortion of the receiver output signal.

3.The LED drive circuit of Figure 11 is required for 1 MBd operation of the HFBR-25X2/25X

4.4.Optical flux, P (dBm) = 10 Log [P(μW)/1000 μW].

5.R L is open.

Figure 20. Typical 40 kBd interface circuit.

Figure 22. Guaranteed system performance with improved cable.

Figure 21. Guaranteed system performance with standard cable.

40 kBd Link

System Performance Under recommended operating conditions unless otherwise specified.Parameter Symbol

Min.Typ.Max.Units Conditions

Ref.Data Rate dc 40

kBd BER ≤10-9, PRBS: 27 - 1Link Distance 1341m I Fdc = 2 mA Fig. 21(Standard Cable)94138m I Fdc = 60 mA Note 1Link Distance 1545m I Fdc = 2 mA Fig. 22(Improved Cable)111

154m I Fdc = 60 mA

Note 1Propagation t PLH 4μs R L = 3.3 k ?, C L = 30 pF Fig. 22, 25Delay

t PHL 2.5

μs P R = -25 dBm, 1 m fiber Note 2Pulse Width

t D

7μs

-39 ≤P R ≤- 14 dBm Fig. 23, 24

Distortion t PLH -t PHL

R L = 3.3 k ?, C L = 30 pF

Notes:

1.Estimated typical link life expectancy at 40°C exceeds 10 years at 60 mA.

2.The propagation delay for one metre of cable is typically 5 ns.

Figure 23. 40 kBd propagation delay test circuit.

Figure 26. Propagation delay test waveforms.

Figure 25. Typical link propagation delay vs. optical power.

Figure 24. Typical link pulse width distortion

vs. optical power.5

-40

-28-34-10t – P U L S E W I D T H D I S T O R T I O N – μs

D 6

0-22-16 P – INPUT OPTICAL POWER, dBm R

Pin #Function 1Anode 2Cathode 3Open 4Open

5Do not connect 8Do not connect

Note: Pins 5 and 8 are for mounting and retaining purposes only. Do not electrically connect these pins.

HFBR-15X3 Transmitter

Absolute Maximum Ratings

Notes:

1.1.6 mm below seating plane.

2.Recommended operating range between 10 and 750 mA.

3.1 μs pulse, 20 μs period.

Transmitter Electrical/Optical Characteristics 0°C to 70°C unless otherwise specified.For forward voltage and output power vs. drive current graphs.

Note:

Pin #Function 1V O

2Ground 3Open 4V CC

5Do not connect 8Do not connect

Note: Pins 5 and 8 are for mounting and retaining purposes only. Do not electrically connect these pins.

HFBR-25X3 Receiver

CC O

Notes:

1.1.6 mm below seating plane.

2.It is essential that a bypass capacitor 0.01 μF be connected from pin 2 to pin 3 of the receiver.

Notes:

1.Measured at the end of the fiber optic cable with large area detector.

2.Optical flux, P (dBm) = 10 Log P(μW)/1000 μW.

3.Because of the very high sensitivity of the HFBR-25X3, the digital output may switch in response to ambient light levels when a cable is not occupying the receiver optical port. The designer should take care to filter out signals from this source if they pose a hazard to the system.

4.Including current in 3.3 k pull-up resistor.

For product information and a complete list of distributors, please go to our website: https://www.360docs.net/doc/a65193439.html, Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies, Pte. in the United States and other countries. Data subject to change. Copyright ? 2006 Avago Technologies Pte. All rights reserved. Obsoletes 5968-1712E

5988-1765EN April 10, 2006

PS中英文对照资料

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微软Visual Studio 1微软Visual Studio Visual Studio 是微软公司推出的开发环境，Visual Studio可以用来创建Windows平台下的Windows应用程序和网络应用程序，也可以用来创建网络服务、智能设备应用程序和Office 插件。Visual Studio是一个来自微软的集成开发环境IDE，它可以用来开发由微软视窗，视窗手机，Windows CE、.NET框架、.NET精简框架和微软的Silverlight支持的控制台和图形用户界面的应用程序以及Windows窗体应用程序，网站，Web应用程序和网络服务中的本地代码连同托管代码。 Visual Studio包含一个由智能感知和代码重构支持的代码编辑器。集成的调试工作既作为一个源代码级调试器又可以作为一台机器级调试器。其他内置工具包括一个窗体设计的GUI应用程序，网页设计师，类设计师，数据库架构设计师。它有几乎各个层面的插件增强功能，包括增加对支持源代码控制系统（如Subversion和Visual SourceSafe）并添加新的工具集设计和可视化编辑器，如特定于域的语言或用于其他方面的软件开发生命周期的工具（例如Team Foundation Server的客户端：团队资源管理器）。 Visual Studio支持不同的编程语言的服务方式的语言，它允许代码编辑器和调试器（在不同程度上）支持几乎所有的编程语言，提供了一个语言特定服务的存在。内置的语言中包括C/C + +中（通过Visual C++）,https://www.360docs.net/doc/a65193439.html,（通过Visual https://www.360docs.net/doc/a65193439.html,），C＃中（通过Visual C＃）和F＃（作为Visual Studio 2010），为支持其他语言，如M,Python,和Ruby等，可通过安装单独的语言服务。它也支持的 XML/XSLT,HTML/XHTML ,JavaScript和CSS.为特定用户提供服务的Visual Studio也是存在的：微软Visual Basic，Visual J＃、Visual C＃和Visual C++。微软提供了“直通车”的Visual Studio 2010组件的Visual Basic和Visual C＃和Visual C + +，和Visual Web Developer版本，不需任何费用。Visual Studio 2010、2008年和2005专业版，以及Visual Studio 2005的特定语言版本（Visual Basic、C++、C＃、J＃），通过微软的下载DreamSpark计划，对学生免费。 2架构 Visual Studio不支持任何编程语言，解决方案或工具本质。相反，它允许插入各种功能。特定的功能是作为一个VS压缩包的代码。安装时，这个功能可以从服务器得到。IDE提供三项服务：SVsSolution，它提供了能够列举的项目和解决方案; SVsUIShell，它提供了窗口和用户界面功能（包括标签，工具栏和工具窗口）和SVsShell，它处理VS压缩包的注册。此外，IDE还可以负责协调和服务之间实现通信。所有的编辑器，设计器，项目类型和其他工具都是VS压缩包存在。Visual Studio 使用COM访问VSPackage。在Visual Studio SDK中还包括了管理软件包框架(MPF)，这是一套管理的允许在写的CLI兼容的语言的任何围绕COM的接口。然而，MPF并不提供所有的Visual Studio COM 功能。

商务英语口语900句-中英文对照-中文翻译资料

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中英文专业资料

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外文原文 , , ,610031 ’s . a . a . , a . —, , ’s ’s . 1. , . , , ’s ’ [1] , . [1] a () , [2] . [3,4] [5] () , ’s , [6]. [7] ’s . , ’s ’s a . 2.’S . , . ’s ’s , ’s . , (1). (…) (1) w ’s ; I ; c , ; s , . 3. 3.1 , . , a , ’s . , a , ’s , . , ’s ’s . 3.2 a : (1)N. 1,2, … N.

(2) w 12… . (3) R 1,2, … (4) Δ ? ? ?others toprojectQ rcer humanresou i k 01 (5) . I t I t . (6) △ I ’s a .( ’t .) (7) (5) t I △ ,( △ ). , – a . (8) (6) (7), I ( = △* △ ). (9) =ηi / * , ηi I ; * I , * =∑=R k ki 1 δ . , . , , . 3.3 , , : = ∑∑==N i i N i Ci 11 ω i i N i i N i c t ??∑∑==1 1 ω (2) ∑∑ ==N i i N i 1 1 ω ) E i R i ki i t - ?? ∑=1 δη i c ? 2F Z 2()i t ? ) E i R i ki i t - ??∑=1 δη (3) () ,(N j i K 3,2,1,=?) (4)

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