ImageVerifierCode 换一换
格式:PDF , 页数:3 ,大小:127.49KB ,
资源ID:704369      下载积分:10000 积分
快捷下载
登录下载
邮箱/手机:
温馨提示:
如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
如填写123,账号就是123,密码也是123。
特别说明:
请自助下载,系统不会自动发送文件的哦; 如果您已付费,想二次下载,请登录后访问:我的下载记录
支付方式: 支付宝扫码支付 微信扫码支付   
注意:如需开发票,请勿充值!
验证码:   换一换

加入VIP,免费下载
 

温馨提示:由于个人手机设置不同,如果发现不能下载,请复制以下地址【http://www.mydoc123.com/d-704369.html】到电脑端继续下载(重复下载不扣费)。

已注册用户请登录:
账号:
密码:
验证码:   换一换
  忘记密码?
三方登录: 微信登录  

下载须知

1: 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。
2: 试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。
3: 文件的所有权益归上传用户所有。
4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
5. 本站仅提供交流平台,并不能对任何下载内容负责。
6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。

版权提示 | 免责声明

本文(ECA EIA-448-3-A-1990 Method 3 Standard Test Methods for Electromechanical Switches Chromaticity《方法3 机电开关的标准测试方法 色度》.pdf)为本站会员(towelfact221)主动上传,麦多课文库仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文库(发送邮件至master@mydoc123.com或直接QQ联系客服),我们立即给予删除!

ECA EIA-448-3-A-1990 Method 3 Standard Test Methods for Electromechanical Switches Chromaticity《方法3 机电开关的标准测试方法 色度》.pdf

1、. n I a I o I ao t * I O. - R - EIA 448-3-A 90 m 3234600 0069089 2 m * ANSI/ EIA-448-3-A-19 90 APPROVED: April 27, 1990 STANDARD Method 3 Standard Test Methods for Electromechanical Switches: Chromaticity EIA-448-3-A JUNE 1990 ELECTRON IC IN DUSTRI ES ASSOCIATION ENGINEERING DEPARTMENT EIA 44-3-A 90

2、 m 3234600 00b9090 9 m NOTICE s EIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement of products, and assisting the purchaser in selecting and o

3、btaining with minimum delay the proper product for his particular need. Existence of such Standards and Publications shall not in any respect preclude any member or nonmember of EIA from manufacturing or selling products not conforming to such Standards and Publications, nor shall the existence of s

4、uch Standards and Publications preclude their voluntary use by those other than EIA members, whether the standard is to be used either domestically or internationally. Recommended Standards and Publications are adopted by EIA without regard to whether or not their adoption may involve patents on art

5、icles, materials, or processes. By such action, EIA does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting the Recommended Standard or Publication. This EIA Standard is considered to have International Standardization implication, but the In

6、ternational Electrotechnical Commission activity has not progressed to the point where a valid comparison between the EIA Standard and the IEC document can be made. This Standard does not purport to address all safety problems associated with its use or all applicable regulatory requirements. It is

7、the responsibility of the user of this Standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations before its use. (From Standards Proposal No. 2307 formulated under the cognizance of the P-13 Committee on Switches.) Published by ELECTRO

8、N IC IN DUSTRI ES ASSOCIATION Engineering Department 2001 Pennsylvania Ave., N.W. Washington, D.C. 20006 PRICE: $1 1 .O0 COPYRIGHT 1990 All Rights Reserved Printed in U.S.A. L EIA 448-3-A 90 3234600 O069093 O EM-448-3-A Page 1 METHOD 3 CHROMATICITY 1. PURPOSE The purpose of this test method is to de

9、termine if the lens colors fall within specified limits. 2. PROCEDURE 2.1 The chromaticity shall be determined by spectrometric or visual means using one of the Techniques described below. (a) Technique I: Spectrophotometer, flat slab - Chromaticity shall be determined using a spectrometer, flat sla

10、b material of the same density and thickness as the shaped filter, and necessary calibration filters. (b) Technique II: Spectroradiometric - Chromaticity shall be determined using a spectroradiometer, a complete illuminated pushbutton assembly, calibrated lamps of specified color temperature, and ne

11、cessary calibration filters. (c) Technique III: Visual Comparator - Chromaticity shall be determined by a color comparator, necessary high and low limit filters of known chromaticity, and calibrated light sources of specific color temperature. 3. SUMMARY The following details must be specified in th

12、e individual specification: 3.1 The chromaticities of the lens color shall be expressed as x and y coordinated on the 1931 CIE Chromaticity Diagram or as u & v1 on the 1976 CIE Chromaticity Diagram which WU describe the acceptable area for the color. 3.2 The kelvin (K) temperature value of the illumination source. 3.3 The technique to be used to determine chromaticity. 3.4 The tolerance for acceptance/rejection criteria.

copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
备案/许可证编号:苏ICP备17064731号-1