Eurotech Appliances Computer Hardware MEC 2050 User Manual

EmbeddedDNA ®  
MEC-2050  
PC/104 DURACHASSIS 5X5 机箱  
用户手册  
Rev. 1.2  
Apr. 2006  
1994-2006 Eurotech S.p.A. 版权所有  
PC/104 – DURACHASSIS 5X5 机箱  
3
定义与注释  
下表中图标的注释适用于该手册。  
图标  
通知类型  
注意  
描述  
重要信息和规定  
提醒您注意对系统潜在的损坏或  
可能对人员造成的伤害  
警告  
废弃物丢弃说明  
处理本设备时,建议根据当地的废物处理法规将各个元件分开处理。确保已用电池的丢弃按当地废物法规。勿  
将电池丢入火中 (易爆) 或普通废物罐。  
当产品本身或其包装上印有此标记  
时,说明产品不能当作普通家庭废弃物一样处理,而应当将  
废弃物送往专门的电子电气垃圾回收处理中心。正确处理此类垃圾,能够避免对周围的环境和人体健康造成的  
伤害和不良影响。欲获取更多的相关产品处理和回收办法,您可以联系当地相关机构,或回收服务中心等。  
 
目录  
 
6
PC/104 – DURACHASSIS 5X5 机箱  
第一章 简介  
 
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PC/104 – DURACHASSIS 5X5 机箱  
DuraChassis 机箱介绍  
DuraChassis 压铝制 PC/104 机箱是目前市场上具有代表性的、易于使用的加固型 PC/104 机箱之一。它由重  
量轻、经过阳极化处理的铝制成。这是一个具有可移动的滑轨卡架部件的机箱系统,专为降低振动的影响和便  
于插拔机箱内部的板卡而设计。  
DuraChassis 机箱使 PC/104 系统的实用性上升到行业级的最高水平,便于根据不同的应用领域进行重新配置  
和升级。该机箱的设计采用了挤压固定的橡胶轨,与传统的隔离支架相比,它提供了更简易的板卡插拔方法。  
在卡架中可以安全地放5 PC/104 板卡,滑轨槽与板卡4 个固定连接点,可以通过取4 个螺钉来移动  
卡堆栈里的任何一PC/104 模块。  
该机箱具有抗强冲击震动的能力,适应于在移动、空运、海运和其它特殊的嵌入式 PC/104 环境中运行。安装  
在滑轨卡架周围的 59 个硬度计 Silastic®硅胶减震器的重力负荷因子(G-Loads)为 10,这有效地降低了  
PC/104 系统的重力负荷。这些特殊的减震器都经过了严格的实地测试,能够满足 MIL-STD 的要求。对于低冲  
/震动的应用,DuraChassis 提供了塑料滑轨垫片(而非隔震器)。  
DuraChassis 采用了 6.0”的标准长度,能够容纳多达 5 PC/104 卡。它使Dust 端盖或 NEMA 端盖防尘、  
防水溅。Dust 端盖恰好与机箱末端齐平,而 NEMA 端盖比较厚,其盖缘可以包围机箱末端,使其对外界环境  
的封闭性更好,通过可选配的垫圈(屏蔽电磁干扰的镀镍石墨或者橡胶垫圈)能使其达到 NEMA 4X 级保护标  
准。端盖是空白的带接口),但是也可以收取少量的费用定制客制化的端盖。  
DuraChassis 机箱底部有榫槽,可以与可选配的铝基板契合便于固定在墙壁或者其它位置上。机箱内部在两面  
隔板上加入散热槽,扩大了表面积,使PC/104 系统更容易散热。  
产品特性  
T6061 压铝合金制成  
提供可NEMA 4X 的保护(垫圈可选配)  
可移动的卡架  
灰色/完全抛光处理  
卡架周围0.5"空间用于连线  
内部抗冲击/震动或者刚性连接  
内部可安装多5 PC/104 模块  
压铝制底部有用于安装底板的槽  
简单快速组装和拆PC/104 卡架(无需隔离支架)  
内部散热槽进行散热  
规范  
减震器59 个硬度Silastic®树脂橡胶  
机箱尺寸5.0" x 5.0" ,外5.3" x 5.3" 0.15" 度:6.0"  
容量5 PC/104 (6"机箱)  
卡架极化处理铝制轨,镀镍端盖  
卡架尺寸4.0” x 4.0” – 长度:4.0”  
端盖重量和尺寸Dust 端盖0.22 磅或更少,5.3" x 5.3" x .062"NEMA 端盖0.45 磅或更少  
5.5" x 5.5" x 0.375"  
NEMA抗震版:  
 
PC/104 – DURACHASSIS 5X5 机箱  
9
为恶劣的环境设计,防尘/防水/防电磁干扰和抗震动/抗冲击隔离要求,隔离垫圈可选。  
Dust抗震版:  
为标准环境设计,抗震动/抗冲击隔离要求。  
PC/104 概述  
PC/104 特点有:小尺寸结(3.550" x 3.775")、堆栈104 管脚ISA 总线接口及其更低的总线信号驱动,  
它的尺寸、可持久性、可扩展性、可靠性、高质量、低功耗使其非常适合于嵌入式计算。用户在桌PC 系统  
中能够找到的每一种功能,都可以PC/104 系统中实现,这大大缩短了嵌入式系统的开发周期和投入市场的  
时间。您可以从下面的链接地址了解PC/104 的详细规范:  
 
第二章 组成部件  
 
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PC/104 – DURACHASSIS 5X5 机箱  
组成部件  
DuraChassis 机箱包括以下部件:  
(1) 5.3” x 5.3” 铝制外6.0” ;内部尺寸5.0” x 5.0” 的完  
全抛光压铝制外壳;厚0.15"的壁板,上有间0.10”的凹槽以利于冷  
却。  
(2) 2 5.3” x 5.3” Dust 端盖5.5” x 5.5” NEMA Dust 端盖厚度0.062";铝NEMA 端  
盖包括一5.0” x 5.0” x .062" 的内部金属板,以及一个用来固定该内板5.5” x 5.5” x 0.375"的外部环形  
盖缘。标准的端盖是空白的(没有接口)。根据特殊需求可以定制端盖。  
(24) 24 个圆头六角螺丝钉,4/40 x 0.1875” (仅用NEMA ) 12 个把  
内部NENA 端盖板固定到外部的环形盖缘上。  
(8) 8 个盘头菲利普螺丝钉,#6-32 x 0.500” 4 个把每Dust 者  
NEMA 环形盖缘固定5.3” x 5.3”的机箱上。  
 
PC/104 – DURACHASSIS 5X5 机箱  
13  
(8) 8 #6 平面尼龙垫圈,0.312” x 0.140” x 0.032” 4 Dust 端盖或者  
NEMA 端盖上4 6-32 x 0.500”的菲利普螺丝钉配合使用。  
(4) 4 个卡架滑镀黑铝板,带有橡胶垫,以适0.6”标准PC/104 板卡间隔,以及非标准板间隔(包  
括接口模块以PC/104 规范中位于"keep-out"区域的其它模块),长度4.0”  
(2) 两个卡架端4 个卡架滑轨上,每个滑轨末端都放置了两4.0” x 4.0” 镀锌  
端盖。端盖中间有一3.0”的方孔以便内部通风。  
(8) 8 #4 半圆头六角螺丝钉,40 x 0.1875” 4 个螺丝钉用在卡架端盖  
上,用以固定滑轨。  
(8) 8 个减震器  
(仅用于抗震) – 6.0” DuraChassis 机箱包8 个硅胶减震器,它们安  
装在卡架上,计示硬度59。减震器旨在降PC/104 系统在空间受到  
的重力负荷,其重力负荷(G-Loads)因子高10。减震器内4/40  
六角螺丝钉将其固定4 个卡架滑轨上。  
(4) 减震器塑料(仅用于抗震版) – 减震器两端各有两个塑料塞,保证卡架  
在机箱中的安全,防止可能造成的移动。  
第三章 组装步骤  
 
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PC/104 – DURACHASSIS 5X5 机箱  
1所有PC/104 部件进行堆栈  
所需部件户提供PC/104 部件以及线缆  
将用户提供的所有 PC/104 系统板按照图 1 所示进行堆栈,将 104 针插入 socket 总线接口,将所有需要的线  
缆接好。之后先暂时把板卡堆栈放在一旁待用。  
注意:DuraChassis 的滑轨卡架摒弃了 PC/104 之间的隔离支架(很多传统的 PC/104 系统中仍然保留这种方  
式),这就大大简化了组装系统过程。  
1. PC/104 板卡堆栈  
 
PC/104 – DURACHASSIS 5X5 机箱  
17  
22 个滑轨用螺栓连接在端盖上,开始组装滑轨卡架  
所需部件2 个卡架端盖,2 个卡架滑轨,4 #4/40 x 0.1875”半圆头六角螺丝钉  
所需工具:六角扳手  
由于标准的 PC/104 电路板尺寸是 3.6” x 3.8”,每一个滑轨都有一个厚边、一个薄边。按照图 2 所示分别将两  
个滑轨安装在端盖上。如图 3 所示,确保端盖的开槽口向上。用 2 #4/40 螺丝钉将底部的滑轨固定在端盖两  
端。不要完全拧紧。  
注意:让端盖的开槽口向上,安装另外两个滑轨之后,可以更容易地插入 PC/104 板卡堆栈,这样不需要拆卸  
整个机箱就可以方便地插拔板卡。  
2.  
卡架与滑轨的正确安装位置示意图  
 
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PC/104 – DURACHASSIS 5X5 机箱  
3.  
将两个滑轨安装在卡架端盖上  
PC/104 – DURACHASSIS 5X5 机箱  
19  
3PC/104 卡插入卡架,安装剩下的两个滑轨  
所需部件: PC/104 板卡堆栈、部分组装的卡架、剩下的两个滑轨、 其余4 #4/40 x 0.1875”半圆头六角  
螺丝钉  
所需工具六角扳手  
小心地将 PC/104 板卡堆栈插入滑轨卡架(为了让板卡堆栈有更多的插入空间,可以再将端盖螺丝钉拧松一  
点)。按照4 所示,将剩余两个滑轨安装上在端盖的上方两个角,用两个 #4/40 六角螺丝钉固定在两边。如  
5,待板卡堆栈完全插入,等所有滑轨安装完毕,拧8 个螺丝钉。  
4.  
PC/104 板卡堆栈、安装剩余两个滑轨  
5.  
PC/104 板卡堆栈后组装卡架  
 
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PC/104 – DURACHASSIS 5X5 机箱  
4a减震器安装在卡架(仅适用于抗震)  
所需部件装好板卡堆栈PC/104 卡架、8 个减震器、4 个减震塞  
所需工具六角扳手(用户自备)  
抗震DuraChassis 通过在卡架上安装减震器来保证可移动滑轨式卡架的安全:一共使用8 个减震器。卡  
8 个角上各安装一个减震器,4 个减震塞用来减小卡架和机箱端盖之间的接触。  
6. 将减震器和减震塞安装在卡架上  
 
PC/104 – DURACHASSIS 5X5 机箱  
21  
7.  
将减震器安装在卡架上  
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PC/104 – DURACHASSIS 5X5 机箱  
5卡架插入机箱  
所需部件组装好PC/104 卡架、5.3” x 5.3” 铝制机箱  
将减震器安装在卡架上之后,小心的将卡架顺滑轨插5.3” x 5.3”箱。  
8. 将抗震卡架插入机箱  
 
PC/104 – DURACHASSIS 5X5 机箱  
23  
6aDust (仅适用Dust )  
所需模块内置板卡堆栈5x5 8 #6-32 x 0.500” 菲利普螺丝钉,8 #6 平面尼龙垫圈、两个  
Dust 端盖、用户提供的接口  
所需工具菲利普螺丝起子  
端盖的每个角各用一#6-32 x 0.500” 菲利普螺丝钉和垫圈,将两Dust 端盖安装5x5 机箱两端。尼龙垫  
圈能够防止端盖被划伤。  
9. 安装端盖、螺丝和接口  
 
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PC/104 – DURACHASSIS 5X5 机箱  
10. 组装好的带有用户接口DuraChassisDust 版)  
PC/104 – DURACHASSIS 5X5 机箱  
25  
6bNEMA (仅适用NEMA )  
所需部件内置板卡堆栈5x5 机箱、8 #6-32 x 0.500” 菲利普螺丝钉、8 #6 平面尼龙垫圈、带2 个端  
盖内板的两NEMA 端盖环、24 #4/40x 0.1875 圆头螺丝钉  
所需工具菲利普螺丝起子、六角扳手  
14 15 所示,12 #4/40x0.1875 圆头螺丝钉将每个端盖板安装到环形盖上。使用用户提供的硬件  
把所有PC/104 系统外部接口安装到相应NEMA 端盖上。用#6-32 x 0.500” 菲利普螺丝钉和垫圈将端盖  
(内板以及外环)固定在机箱上。  
11.  
NEMA 端盖  
 
第四章 排除故障  
 
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PC/104 – DURACHASSIS 5X5 机箱  
技术和销售支持  
若有技术问题,请联Eurotech 客户支或发电子邮件:  
2. Phone+39-0433-485411  
3. Fax+39-0433-485499  
您也可以联系离您最近Eurotech 销售公司,获得销售和商务方面的信息与帮助。  
返修服务  
在返还任何Eurotech的产品前,请您先将您的模型号、序列号、简短的错误描述以及您的详细联系方式发邮件  
Eurotech技术部(e-mail[email protected]),您将获得一个RMA(返修认证)码。  
注意!返修任何产品必须RMA 码  
将板用防静电的盒子包装好,最好是坚固的纸板盒可以防止受到冲撞。  
警告! 返回Eurotech 的产品如果没有适当的包装,不在我们的质保范围内!  
 
Appendix  
 
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PC/104 – DURACHASSIS 5X5 机箱  
A.1 Safety Summary  
The following general safety precautions must be observed during all phases of operationserviceand  
repair of this equipment. Failure to comply with these precautions or with specific warnings elsewhere in this  
manual violates safety standards of designmanufactureand intended use of the equipment. Eurotech  
SpA assumes no liability for the customer’s failure to comply with these requirements.  
The safety precautions listed below represent warnings of certain dangers of which Eurotech is aware.  
Youas the user of the productshould follow these warnings and all other safety precautions necessary  
for the safe operation of the equipment in your operating environment.  
Ground the Instrument  
To minimize shock hazardthe equipment chassis and enclosure must be connected to an electrical ground.  
The equipment is supplied with a three-conductor ac power cablethe power cable must be plugged into an  
approved three-contact electrical outletwith the grounding wire (green) firmly connected to an electrical  
ground (safety ground) at the power outlet. The power jack and mating plug of the power cable meet  
International Electro technical Commission QEC) safety standards.  
Do Not Operate in an Explosive Atmosphere  
Do not operate the equipment in the presence of flammable gases or fumes. Operation of any electrical  
equipment in such an environment constitutes a definite safety hazard.  
Keep Away From Live Circuits  
Operating personnel must not remove equipment covers. Only Factory Authorized Service Personnel or  
other qualified maintenance personnel may remove equipment covers for internal subassembly or  
component replacement or any internal adjustment. Do not replace components with power cable connected.  
Under certain conditionsdangerous voltages may exist even with the power cable removed. To avoid  
injuriesalways disconnect power and discharge circuits before touching them.  
Use Caution When Exposing or Handling the CRT  
Breakage of the Cathode-Ray Tube (CRT) causes a high-velocity scattering of glass fragments (implosion).  
To prevent CRT implosionavoid rough handling or jarring of the equipment. Only qualified maintenance  
personnel using approved safety mask and gloves should do handling of the CRT.  
Do Not Substitute Parts or Modify Equipment  
Because of the danger of introducing additional hazardsdo not install substitute parts or perform any  
unauthorized modification of the equipment. Contact Eurotech technical staff or your local representative for  
service and repair to ensure that safety features are maintained.  
Observe Dangerous Procedure Warnings  
Warningssuch as the example belowprecede potentially dangerous procedures throughout this manual.  
Instructions contained in the warnings must be followed. You should also employ all other safety  
precautionswhich you deem necessary for the operation of the equipment in your operating environment.  
 
PC/104 – DURACHASSIS 5X5 机箱  
31  
Flammability  
All Eurotech PWBs (printed wiring boards) are manufactured by UL-recognized manufacturerswith a  
flammability rating of UL-V0.  
EMI Caution  
This equipment generatesuses and can radiate electromagnetic energy. It may cause or be susceptible to  
electromagnetic interference (EMI) if not installed and used in a cabinet with adequate EMI protection.  
CE Notice  
This product complies with the EMC Directive (89/336/EEC). Compliance with this directive implies  
conformity to the following European Norms:  
¾
¾
EN55022 (CISPR 22) Radio Frequency Interference  
EN50082-1 (IEC801-2IEC801-3IEC801-4) Electromagnetic Immunity  
The product also fulfills EN60950 (product safety)which is essentially the requirement for the Low Voltage  
Directive (73/23/EEC).  
This product was tested in a representative system to show compliance with the above-mentioned  
requirements. A proper installation in a CE-marked system will maintain the required EMC/safety  
performance.  
Disclaimer of Warranty  
THIS MANUAL IS PROVIDED ’AS IS’ WITHOUT WARRANTY OF ANY KINDEITHER EXPRESS OR  
IMPLIEDINCLUDINGBUT NOT LIMITED TOTHE IMPLIED WARRANTIES OF MERCHANTABILITY  
AND FITNESS FOR A PARTICULAR PURPOSE. The laws of some states and countries do not allow the  
disclaimer of express or implied warranties in certain transactionsthereforethis statement may not apply  
to you. As suchthe above warranty disclaimer shall only apply to the extent permitted by law.  
Notice  
While reasonable efforts have been made to assure the accuracy of this documentEurotech S.p.A.  
assumes no liability resulting from any omissions in this documentor from the use of the information  
contained therein. It is not warranted that the contents of this publication or any accompanying source code  
exampleswhether individually or as one or more groupswill meet your requirements or that the  
publication or the accompanying source code examples are error-free. This publication could include  
technical inaccuracies or typographical errors.  
Eurotech reserves the right to revise this document and to change its contents at any time without obligation  
to notify any person of such revision or changes.  
Any reference to a licensed program in this publication is not intended to state or imply that you can use only  
that licensed program. You can use any functionally equivalent program instead.  
No part of this material may be reproduced or copied in any tangible mediumor stored in a retrieval  
systemor transmitted in any form or by any meansradioelectronicmechanicalphotocopying,  
recording or facsimileor otherwisewithout the prior written permission of Eurotech S.p.A.  
Reliability  
Eurotech has taken extra care of product design in order to ensure reliability. The two major ways in which  
reliability is achieved are:  
¾
The product is designed in top-down fashionutilizing the latest in hardware and software  
techniquesso unwanted side effects and unclean interactions between parts of the system are  
eliminated.  
 
32  
PC/104 – DURACHASSIS 5X5 机箱  
¾
Eurotech tests each board by exercising its functionsburns it in under powerand retests it to  
ensure that the infant mortality phase is passed before the product is shipped.  
Life Support Policy  
Eurotech products are not authorized for use as critical components in life support devices or systems  
without the express written approval of the president of Eurotech S.p.A.  
 
Glossary  
A
ATA  
Advanced Technology Attachmentis a disk drive implementation integrating the controller on the disk drive.  
There are several versions of ATA:  
ƒ
ATAKnown also as IDEsupports one or two hard drivesa 16-bit interface and PIO modes 0,  
1 and 2.  
ƒ
ATA-2Supports faster PIO modes (3 and 4) and multiword DMA modes (1 and 2). Also supports  
Logical Block Addressing (LBA) and block transfers. ATA-2 is marketed as Fast ATA and Enhanced  
IDE (EIDE).  
ƒ
ƒ
ATA-3Minor revision to ATA-2.  
Ultra-ATAAlso called Ultra-DMAATA-33and DMA-33supports multiword DMA mode 3  
running at 33 MBps.  
ƒ
ATA/66A new version of ATAthat will double ATA's throughput to 66 MBps  
ATAPI  
Short for AT Attachment Packet Interfacean extension to EIDE that enables the interface to support CD-  
ROM players  
B
BIOS  
Basic I/O system. A set of routines that works closely with the hardware to support the transfer of information  
between elements of the system such as memory disks and the monitor. Although critical to  
performancethe BIOS is usually invisible to the end userhoweverprogrammers can access it.  
 
34  
PC/104 – DURACHASSIS 5X5 机箱  
C
CELLULAR  
Refers to communications systems where a geographic region is divided into sectorscalled cells.  
CPU  
CPU (Central Processing Unit) is the heart (computational and control unit) of a computer.  
This device interprets and executes instructions.  
D
DMA  
The Direct Memory Access is a technique for transferring data from the memory to a device. Data doesn’t  
pass through the CPU.  
DEVICE  
It is any circuit performing a specific function.  
E
ECP  
Extended Capabilities Port. An asynchronous8-bit–wide parallel channel defined by IEEE 1284-1944 that  
provides PC-to-peripheral and peripheral-to-PC data transfers.  
EEPROM  
EEPROM (also known as E2PROM) stands for Electronic Erasable Programmable ROM.  
This type of memory can be re-programmed by electronic signals.  
EPROM  
EPROM stands for Erasable Programmable ROM.  
This type of memory can only be erased by ultra-violet (UV) light.  
ETHERNET  
It is a type of Local Area Network (LAN) architecture. Ethernet supports data transfer rates of 10Mbps.  
A newer version of Ethernetcalled Fast Ethernet (or 100Base-T)supports data transfer rates of 100  
Mbps. And the newest versionGigabit Ethernet supports data rates of 1 Gbit (1000 megabits) per second.  
F
FDC  
Floppy Disk Controller. A special-purpose chip and associated circuitry that directs and controls reading from  
and writing to a computer’s disk drive.  
FIFO  
First in/first out. A method for processing a queue in which items are removed in the same order in which  
they were added.  
Flash ROM  
Flash ROM (like EEPROM) can be re-programmed by electronic signals. Usually a Flash ROM has a  
capacity of 1MB.Into this memory usually resides BIOS and other useful programs or instructions.  
PC/104 – DURACHASSIS 5X5 机箱  
35  
G
GPS  
Global Positioning System is a worldwide satellite navigational system formed by satellites orbiting the earth  
and their corresponding receivers on the earth.  
GSM  
Global System for Mobile communicationsis one of the leading digital cellular systemsand uses  
narrowband Time Division Multiple Access which allows eight simultaneous calls on the same radio  
frequency.  
H
HDC  
Hard Disk Controller is a special-purpose chip and circuitry that directs and controls reading from and writing  
to a computer’s disk drive.  
I
IDE  
Integrated Device Electronics is a disk drive interface where the controller electronics reside on the drive  
itself. This allows elimination of the need for a separate adapter card.  
IEEE  
IEEE stands for Institute of Electrical and Electronics Engineerspronounced “I-triple-E.” Founded in 1963,  
IEEE is an organization composed of engineersscientistsand students. IEEE is best known for  
developing standards for the computer and electronics industry.  
I/O  
I/O (Input/output). Two of the three activities that characterize a computer (inputprocessingand output).  
Refers to the complementary tasks of gathering data for the microprocessor to work with and making the  
results available to the user through a device such as the displaydisk driveor printer.  
IRQ  
IRQ (Interrupt ReQuest). A method by which a device can request to be serviced by the device’s software  
driver. The system board uses a PIC to monitor the priority of the requests from all devices. When a request  
occursa microprocessor suspends the current operation and gives control to the device driver associated  
with the interrupt.  
ISA  
ISA (Industry Standard Architecture) is an 8-bit / 16-bit bus that provides a buffered interface from devices on  
expansion cards to the PC internal bus.  
L
LAN  
LAN (Local Area Network). A group of computers and other devices spanned over a relatively limited area  
(i.e. a single building).  
LBA  
LBA (Logical Block Address). A unit of data supplied or requested by a host computer.  
36  
PC/104 – DURACHASSIS 5X5 机箱  
M
MIDI  
MIDI (Musical Instrument Digital Interface). An industry-standard connection for computer control of musical  
instruments and devices. A hardware and data standard for communicating between hardware. Most  
references involve only the data standardwhich is a byte stream used for controlling musical instruments  
and storing the output of such instruments.  
MPEG  
MPEG (Moving Picture Expert Group). Refers to one of several standard video-compression schemes. A  
CODEC for squeezing full-screenVHS-quality digital video into a small data stream so that it can be played  
from a CD-ROM drive.  
N
NDIS  
NDIS (Network Driver Interface Specification). The interface for network drivers used in Windows and  
Windows NT operating systems. NDIS provides a common mechanism by which any given NDIS-compatible  
transport driver can communicate with any NDIS-compatible network adapter driver. Moreoverit provides  
for multiple transports to work over multiple network adapters by supporting multiplexing between transports  
and drivers.  
NMI  
NMI (Nonmaskable Interrupt). An interrupt that cannot be overruled by another service request. A hardware  
interrupt is called nonmaskable if it cannot be masked by the processor interrupt flag.  
NTSC  
NTSC (National Television System Committee) of the Electronics Industries Association (EIA). The  
standards-setting body for television and video in the United States. Sponsor of the NTSC standard for  
encoding coloura coding system compatible with black-and-white signals and the first system used for  
colour broadcasting in the United States. The broadcast standard for the United States and Japan. See also  
PAL format and SECAM.  
O
OEM  
OEM stands for Original Equipment Manufacturer. This acronym is used primarily to refer to PC systems  
manufacturers.  
P
PCI  
PCI (Peripheral Component Interconnect) is a standard high-performance32-bit / 64-bit busdesigned to  
be used with devices that have high bandwidth requirements.  
PCMCIA  
PCMCIA (Personal Computer Memory Card International Association). Sometimes used to refer to a  
controller for a type of expansion card documented in the PCMCIA standards.  
PIO  
PC/104 – DURACHASSIS 5X5 机箱  
37  
The Programmed Input/Output is a method of transferring data over the IDE interface. The other way is the  
Direct Memory Access (DMA)  
R
RAM  
RAM (Random Access Memory). Semiconductor-based memory that can be read-from and written-to by the  
microprocessor or other hardware devices.  
ROM  
ROM stands for Read Only Memory. This memory can only be read-from but not written-to.  
S
SCSI  
SCSI stands for Small Computer System Interface. It is an I/O bus designed as a method for connecting  
several classes of peripherals to a host system without requiring modifications to generic hardware and  
software.  
SECAM  
SECAM (Sequential Couleur a MemoireSequential Colour with Memory). The television standard for  
FranceRussiaand most of Eastern Europe. As with PALSECAM is based on a 50-Hz power system,  
but it uses a different encoding process and displays 819 horizontal lines per frame at a scan rate of 25  
frames per second (50 fields per second). See also NTSC and PAL format.  
SMBus  
SMBus (System Management Bus). A two-wire interface based on the I²C protocol. The SMBus is a low-  
speed bus that provides positive addressing for devicesas well as bus arbitration.  
SSD  
SSD stands for Solid State Disk (i.e. Disk on ChipDisk on ModuleFlash ROM,).  
In fact this is not a real disk but a silicon support memory without mechanical parts that are in movement.  
TDMA  
Time Division Multiple Access is a technology for delivering digital wireless service using time division  
multiplexingthat is a type of multiplexing combining data streams by assigning each stream a different time  
slot in a set.  
U
UART  
UART (Universal Asynchronous Receiver/Transmitter)is a module composed of a circuit that contains both  
the receiving and transmitting circuits required for asynchronous serial communication.  
USB  
USB (Universal Serial Bus) is a 4-pin bi-directionalisochronousdynamically attachable serial peripheral  
bus that is capable of cascading low/medium speed peripherals (less than 10 Mbit/s)  
38  
PC/104 – DURACHASSIS 5X5 机箱  
V
VGA  
VGA Video graphics array. A video adapter that supports 640 × 480-pixel colour resolution. A video display  
standard for boot devices under Windows operating systems.  
W
WAN  
WAN stands for a wide-area network and it is a system of LANs (in geographically separated areas)  
connected together via telephone lines and/or radio waves.  
Acronyms and Abbreviations  
A
Ampere  
Advanced Power Management  
AT Attachment  
ATA Packet Interface  
Basic I/O System  
Direct Memory Access  
Disk On Chip  
LCD  
LPT  
LVD  
MB  
Mbps  
MHZ  
NIDS  
NTSC  
OEM  
PAL  
PCI  
Liquid Crystal Display  
Line Printer  
Low Voltage Differential  
Megabyte  
Megabits per second  
APM  
ATA  
ATAPI  
BIOS  
DMA  
DOC  
DOM  
ECC  
ECP  
FDC  
FDD  
HDC  
HDD  
IDE  
Megahertz  
Network Driver Interface Specification  
National Television System Committee  
Original Equipment Manufacturer  
Phase Alternation Line  
Peripheral Component Interconnect  
Disk On Module  
Error Correction Code  
Enhanced Capabilities Port  
Floppy Disk Drive Controller  
Floppy Disk Drive  
Hard Disk Drive controller  
Hard Disk Drive  
Integrated Device Electronics  
Institute for Electrical and Electronics  
EngineersInc.  
PCMCIA Personal Computer Memory Card  
International Association  
PIC  
PIO  
POST  
RAM  
Programmable Interrupt Controller  
Programmed I/O  
Power-On Self Test  
IEEE  
Random Access Memory  
RAMDAC RAM digital-to-analog converter  
I/O  
IP  
Input/Output  
Internet Protocol  
Interrupt Request  
Industry Standard Architecture  
Kilobyte  
Kilobits per Second  
Kilohertz  
Local Area Network  
Logical Block Addressing  
SCSI  
SMBus  
TCP/IP  
Small Computer System Interface  
System Management Bus  
Transmission Control Protocol/Internet  
Protocol  
IRQ  
ISA  
KB  
Kbps  
KHz  
LAN  
LBA  
USB  
V
Universal Serial Bus  
Volt  
W
Watt  
WAN  
Wide Area Network  
 
Technical & Sales Assistance  
If you have a technical questionplease contact the Eurotech Customer Support Service  
If you have a sales questionplease contact your local Eurotech Sales Representative or the Regional  
Sales Office for your area.  
Additional and latest information is available at Eurotech websitelocated at :  

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