CEA-23-B-2010 Measurement Procedures for Determining Compliance with FCC Rules for 揅able-Ready Consumer Electronics Equipment《有线功能客户电子设备用测定与FCC规则一致性的测量程序》.pdf
《CEA-23-B-2010 Measurement Procedures for Determining Compliance with FCC Rules for 揅able-Ready Consumer Electronics Equipment《有线功能客户电子设备用测定与FCC规则一致性的测量程序》.pdf》由会员分享,可在线阅读,更多相关《CEA-23-B-2010 Measurement Procedures for Determining Compliance with FCC Rules for 揅able-Ready Consumer Electronics Equipment《有线功能客户电子设备用测定与FCC规则一致性的测量程序》.pdf(34页珍藏版)》请在麦多课文档分享上搜索。
1、 CEA Standard Measurement Procedures for Determining Compliance with FCC Rules for “Cable-Ready Consumer Electronics Equipment” CEA-23-B R-2014 September 2014 NOTICE Consumer Electronics Association (CEA) Standards, Bulletins and other technical publications are designed to serve the public interest
2、 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 Standards, Bulletins and o
3、ther technical publications shall not in any respect preclude any member or nonmember of CEA from manufacturing or selling products not conforming to such Standards, Bulletins or other technical publications, nor shall the existence of such Standards, Bulletins and other technical publications precl
4、ude their voluntary use by those other than CEA members, whether the standard is to be used either domestically or internationally. Standards, Bulletins and other technical publications are adopted by CEA in accordance with the American National Standards Institute (ANSI) patent policy. By such acti
5、on, CEA does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting the Standard, Bulletin or other technical publication. This document does not purport to address all safety problems associated with its use or all applicable regulatory requirem
6、ents. It is the responsibility of the user of this document to establish appropriate safety and health practices and to determine the applicability of regulatory limitations before its use. This document is copyrighted by the Consumer Electronics Association (CEA) and may not be reproduced, in whole
7、 or part, without written permission. Federal copyright law prohibits unauthorized reproduction of this document by any means. Organizations may obtain permission to reproduce a limited number of copies by entering into a license agreement. Requests to reproduce text, data, charts, figures or other
8、material should be made to CEA. (Formulated under the cognizance of the CEA R4 Video Systems Committee.) Published by CONSUMER ELECTRONICS ASSOCIATION 2014 Technology however, CEA-542-B supersedes both ANSI/EIA-542 and EIA IS-132. CEA-544-B, Low Frequency Immunity of Tuners in a Cable System, Novemb
9、er 2004 Society of Cable Television Engineers ANSI/SCTE SCTE 02 1997 (formerly IPS SP 406), “F“ Port (Female Indoor) Physical Dimensions ANSI/SCTE 40 2004, Digital Network Interface Standard 2.3 Reference Acquisition CEA Standards: Global Engineering Documents, World Headquarters, 15 Inverness Way E
10、ast, Englewood, CO USA 80112-5776; Phone 800-854-7179; Fax 303-397-2740; Internet http:/; Email ANSI/SCTE Standards: Society of Cable Telecommunications Engineers Inc. (SCTE), 140 Philips Road, Exton, PA 19341-1318; Phone 800-542-5040; Fax 610-363-5898; Internet http:/www.scte.org; Email infoscte.o
11、rg Federal Communications Commission (FCC) Regulations: U.S. Code of Federal Regulations (C.F.R.), U.S. Government Printing Office, Washington, D.C. 20401; http:/www.access.gpo.gov/nara/cfr/cfr-table-search.html 3 Mechanical and Electrical Interface 3.1 Impedance As required by 47 C.F.R. 76.605(a)(3
12、), signal interconnection of the cable drop to subscriber receiving devices utilizes shielded coaxial cable at a nominal impedance of 75 ohms. 3.2 Connectors The cable to the subscribers device employs a Type F male connector that mates properly to a Type F female connector conforming to ANSI/SCTE 0
13、2 1997.Cable system signals comply with the technical requirements in 47 C.F.R. Part 76. 3.3 Signals Intended for Reception by Cable-Ready 3.3.1 Levels Under normal operating conditions, a cable television system provides the following signal level range at the first subscriber device at each outlet
14、: a) Maximum Individual Visual Carrier Input Level: + 20 dBmV (10.0 mV across a 75 ohm terminating impedance) as defined in ANSI/SCTE 40 2004 Section 6.1.1 b) Minimum Individual NTSC Visual Carrier Input Level: 0 dBmV (1.00 mV across a 75 ohm terminating impedance) as specified in 47 C.F.R. 76.605(a
15、)(3) 3.3.2 Differential Levels To reduce visible co-channel interference on a dual cable system, the terminated level differential between equivalent channels should be within 5 dB. 3.3.3 Frequency Accuracy of Channels on Cable All NTSC channels, measured at the ground block of the dwelling, are req
16、uired to be within 25 kHz of nominal Standard, HRC or IRC frequency assignments in CEA-542-B, formerly EIA IS-1321. When measured after any on-premise signal processing devices furnished and maintained by the cable operator, the frequency is required to be within 250 kHz of nominal. This requirement
17、 in no way overrules any FCC or other federal regulation requiring tighter tolerance or other nominal frequency than 1FCC regulations reference EIA IS-132; however CEA-542-B supersedes EIA IS-132. CEA-23-B 7 listed in CEA-542-B. 3.3.4 Video C/N The video carrier-to-noise ratio, as defined in 47 C.F.
18、R. Part 76 and measured at the subscriber terminal, is required to be at least 43 dB. 3.4 Amplitude of Other Carriers Delivered to Input of Cable-Ready Receivers 3.4.1 Maximum Individual Carrier Amplitude Under normal operating conditions, the maximum RMS value of any individual signal whose frequen
19、cy is between 5 and 30 MHz does not exceed -7 dBm (+42 dBmV across 75 ohms). The maximum RMS value of any individual signal whose frequency is between 30 and 41 MHz does not exceed -25 dBm (+24 dBmV across 75 ohms). The maximum RMS value of any individual signal whose frequency is between 41 and 48
20、MHz does not exceed -49 dBm (0 dBmV across 75 ohms). The maximum RMS value of any individual signal whose frequency is between 48 and 54 MHz does not exceed -59 dBm (-10 dBmV across 75 ohms). See CEA-544-B. The maximum RMS value of any individual signal whose frequency exceeds 54 MHz (including thos
21、e signals greater than 1,000 MHz) is less than 10.0 mV across a 75 ohm terminating impedance (+20 dBmV). 3.4.2 Maximum Average Power Density Under normal operating conditions, the average level of multiple 6-MHz bandwidth signals whose frequencies exceed 54 MHz is less than +15 dBmV RMS for digital,
22、 and is less than + 15 dBmV peak for analog. 4 Applying to the Cable Ready Television Receiving DeviceCharacteristics Required to Avoid Interference to Others Receiver measurements are required to comply with the specifications of Section 4. 4.1 Cable Input Conducted Emissions See 47 C.F.R. 15.118(c
23、)(5). Spurious signals from 5 MHz up to but not including 54 MHz are limited to -26 dBmV. 4.1.1 Test Procedure The cable input conducted emissions test procedure is significantly different than the procedures for the other four cable ready receiver performance categories. In this test, an absolute m
24、easurement of the emissions emanating from the receiver and appearing at the RF input connector is performed. Emissions emanating from the receiver can be from internal sources, such as the receiver local oscillator, and/or external sources such as direct pick up (DPU) ingress of ambient fields. The
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
10000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 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:
- CEA23B2010MEASUREMENTPROCEDURESFORDETERMININGCOMPLIANCEWITHFCCRULESFOR ABLEREADYCONSUMERELECTRONICSEQUIPMENT

链接地址:http://www.mydoc123.com/p-591463.html