ECA-324-A-1982.pdf
《ECA-324-A-1982.pdf》由会员分享,可在线阅读,更多相关《ECA-324-A-1982.pdf(9页珍藏版)》请在三一文库上搜索。
1、E I A 324-A 82 m 3234b00 00b5580 b m ANSIIEIA RS-324-A-19S2 APPROVED MARCH 19, 1982 F EIA STANDARD REGISTERED SCREEN DIMENSIONS t FOR COLOR PICTURE TUBES .RS-324-A APRIL 1982 Engneerng rtm ELECTRONIC INDUSTRIES ASSOCIATION Copyright Electronic Components, Assemblies & Materials Association Provided
2、by IHS under license with ECA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/30/2007 20:06:37 MDTNo reproduction or networking permitted without license from IHS -,-,- EIA 32V-A 82 m 3234600 O065581 m NO JICE EIA Engineering Standards and Publications ace designed ta serve t
3、he public interest through eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for his particular need. Existence of such Standard
4、s and Pub- lications shall not in any respect preclude any member or non-member of EIA from manufacturing or selling products not conforming ta such Standards and Publications, nor shall the existence of such Standards and Publications preclude their voluntary use by those other than EIA members, wh
5、ether the standard i s 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 articles, materials, or processes. By such action, EIA does not assume any liability to any paten
6、t owner, nor does it assume any obligation whatever to parties adopting the Recom- mended Standard or Publication. This EIA Recommended Standard is considered to have international standardi- zation implications, but the formulating Committeq is not aware of any IEC activity where a valid comparison
7、 between the EIA Recommended Standard and the IEC Recommendations can be made. Published by ELECTRONIC INDUSTRIES ASSOCIATION Engineering Department 2001 Eye Street, N.W. Washington, RL. 20006 Copyright 1981 ELECTRONIC INDUCTRIES ASSOCIATION Ali rights reserved PRICE: $4.b0 Printed in U.$.A, Copyrig
8、ht Electronic Components, Assemblies & Materials Association Provided by IHS under license with ECA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/30/2007 20:06:37 MDTNo reproduction or networking permitted without license from IHS -,-,- _ E I A 324-A 82 3234600 00b5582 T RS
9、-324-A Page 1 REGISTERED SCREEN DIMENSIONS FOR COLOR PICTURE TUBES (From EIA Standards Proposal No. 1469, formulated under the cognizance of EIA JT-6 Committee on Television Pict,yre Tubes.) The minimum useful screen dimensions and area to be used for registration data of shadow mask type color pict
10、ure tubes shall be established as a projected area from the inside geometry of the face panel. The boundary of this area is mainly determined by the principal axes dimensions of the face panel which are derived from the glass manufacturers design drawing. After the boundary is established, the area
11、is calculated and expressed to the nearest square inch or square centimeter for registration. When establishing the minimum screen boundary, the length of each of the principal axes determined by the distance between the centers of the heel radii at the ends of each axis and by the heel radius as sh
12、own in Figure 1 . The screen size on these axis i s chosen to extend into the heel or blend radius of curvature at the edges of the panel face plate to a point which is 30 beyond the centers-of the heel radius. Thus, the total length of a projected dimension, D, for any principal axis is equal to th
13、e distance between the centers of the heel radii, d, plus the magnitude of the heel radius (r sin 30 on each side). The heel radius and its center location are specified by the glass manufacturers design drawing. Having established the principal axes in the section view, the projected screen boundar
14、y is determined in the plan view shown in Figure 2. The screen corners are calculated by the dimension Dd (diagonal) and the centers of the panel corners. The corners of the projected screen boundary are assumed to be concentric with the corner of the glass panel and, therefo.,have the same centers
15、as the panel corners which are always located on the diagonal axis. The screen corner radius is then equal to the difference between Dd, and the projected distance from - 2 anel corners. the panel centerface to the The panel corner centers derived from the glass manu P .acturers drawing. Screen Boun
16、ciary 4 D- are also Heel Radius 1 FIGURE 1 FACE PANEL, SECTION VIEW Copyright Electronic Components, Assemblies & Materials Association Provided by IHS under license with ECA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/30/2007 20:06:37 MDTNo reproduction or networking per
17、mitted without license from IHS -,-,- RS-324-A Page 2 After the corner radius is determinedr the minlinum screen boundary is completed by calculating a long side radius and a short s i d e radius tangexit to the corner radius and through the boundary p i n t s QXI the minor and majur axes respective
18、ly. With the defined boundary determined, the screen area can be Calcrllated (see the following sample calculation), The screen thus estabrished fs referred to a s the minimum useful screen since a phosphor screen of this actua2 size inside the panel w i l l be magnified by the refraction of the fac
19、e-plate curvature and appear larger when viewed from outside the panel. tained a s a safety factor in tube manufacturing. This screen magnification is main- Exceptions to the Rule: 1. In the case of a round bulb where the vertical height i s limited by the tube mnufi)cturer, the published area w i l
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ECA 324 1982
链接地址:https://www.31doc.com/p-3754855.html