ANSI TIA EIA 250-C-2001 Electrical Performance for Television Transmission Systems《电视传输系统的电气性能》.pdf

1、TIA/EIA STANDARD Electrical Performance for Television Transmission Systems TIA/EIA-250-C 1 (Revision of EIA-250-B) FEBRUARY 1990 1 TELECOMMUNICATIONS INDUSTRY ASSOCIATION Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permi

2、tted without license from IHS-,-,-NOTICE TIA 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 select

3、ing and obtaining with minimum delay the proper product for their particular need. The existence of such Standards and Publications shall not in any respect preclude any member or non-member of TIA fi-om manufacturing or selling products not conforming to such Standards and Publications. Neither sha

4、ll the existence of such Standards and Publications preclude their voluntary use by Non-TIA members, either domestically or internationally. Standards and Publications are adopted by TIA in accordance with the American National Standards Institute (ANSI) patent policy. By such action, TIA does not a

5、ssume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting the Standard or Publication. Further details of the development process are available in the TIA Engineering Manual, located at This Standard does not purport to address all safety problems associ

6、ated with its use or all applicable regulatory requirements. It is 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. 3- 1742-RF 1, formulated u

7、nder the cognizance of the TIA TR- 14.1 O Subcommittee on Electrical Performance Standards for Television Relay Facilities.) This Document was reaffirmed by the American National Standards Institute (ANSI) on May 3,2001 and by the TIA. Published by OTELECOMMUNICATIONS INDUSTRY ASSOCIATION 1990 Stand

8、ards and Technology Department 2500 Wilson Boulevard Arlington, VA 22201 U.S.A. PRICE: Please refer to current Catalog of TIA TELECOMMUNICATIONS INDUSTRY ASSOCIATION STANDARDS AND ENGINEERING PUBLICATIONS or call Global Engineering Documents, USA and Canada (1-800-854-7179) International (303-397-79

9、56) or search online at http:/www.tiaonline.org/standards/search-n-order.cfm All rights reserved Printed in U.S.A Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NOTICE OF DISCLAIMER AND

10、 LIMITATION OF LIABILITY The document to which this Notice is affixed (the “Document”) has been prepared by one or more Engineering Committees or Formulating Groups of the Telecommunications Industry Association (“TIA”). TIA is not the author of the Document contents, but publishes and claims copyri

11、ght to the Document pursuant to licenses and permission granted by the authors of the contents. TIA Engineering Committees and Formulating Groups are expected to conduct their affairs in accordance with the TIA Engineering Manual (“Manual”), the current and predecessor versions of which are availabl

12、e at h.k2p:,:u.tvvaisis.;d/is iniaisoal.cfin. TIAs function is to administer the process, but not the content, of document preparation in accordance with the Manual and, when appropriate, the policies and procedures of the American National Standards Institute (“ANSI”). TIA does not evaluate, test,

13、verify or investigate the information, accuracy, soundness, or credibility of the contents of the Document. In publishing the Document, TIA disclaims any undertaking to perform any duty owed to or for anyone. The use or practice of contents of this Document may involve the use of intellectual proper

14、ty rights (“IPR”), including pending or issued patents, or copyrights, owned by one or more parties. TIA makes no search or investigation for IPR. When IPR consisting of patents and published pending patent applications are claimed and called to TIAs attention, a statement from the holder thereof is

15、 requested, all in accordance with the Manual. TIA takes no position with reference to, and disclaims any obligation to investigate or inquire into, the scope or validity of any claims of IPR. TIA does not enforce or monitor compliance with the contents of the Document. TIA does not certie, inspect,

16、 test or otherwise investigate products, designs or services or any claims of compliance with the contents of the Document. ALL WARRANTIES, EXPRESS OR IMPLIED, ARE DISCLAIMED, INCLUDING WITHOUT LIMITATION, ANY AND ALL WARRANTIES CONCERNING THE ACCURACY OF THE CONTENTS, ITS FITNESS OR APPROPRIATENESS

17、 FOR A PARTICULAR PURPOSE OR USE, ITS PROPERTY RIGHTS. TIA EXPRESSLY DISCLAIMS ANY AND ALL RESPONSIBILITIES FOR THE ACCURACY OF THE CONTENTS AND MAKES NO REPRESENTATIONS OR WARRANTIES REGARDING THE CONTENTS COMPLIANCE WITH ANY APPLICABLE STATUTE, RULE OR REGULATION, OR THE SAFETY OR HEALTH EFFECTS O

18、F THE CONTENTS OR ANY PRODUCT OR SERVICE REFERRED TO IN THE DOCUMENT OR PRODUCED OR RENDERED TO COMPLY WITH THE CONTENTS. MERCHANTABILITY AND ITS NON-INFRINGEMENT OF ANY THIRD PARTYS INTELLECTUAL TIA SHALL NOT BE LIABLE FOR ANY AND ALL DAMAGES, DIRECT OR INDIRECT, ARISING FROM OR RELATING TO ANY USE

19、 OF THE CONTENTS CONTAINED HEREIN, INCLUDING WITHOUT LIMITATION ANY AND ALL INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FORLOSS OF BUSINESS, LOSS OF PROFITS, LITIGATION, OR THE LIKE), WHETHER BASED UPON BREACH OF CONTRACT, BREACH OF WARRANTY, TORT (INCLUDING NEGLIGENCE)

20、, PRODUCT LIABILITY OR OTHERWISE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. THE FOREGOING NEGATION OF DAMAGES IS A FUNDAMENTAL ELEMENT OF THE USE OF THE CONTENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. Copyright Electronic Industries Alliance Prov

21、ided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A- -*- a o I O Lo Cu

22、I a i= EIA TIA-250-C 90 3234600 0008888 2 EIA/TIA STANDARD AN rned APPROVED: January 4,1990 Electrical Performance for Television Transmission Systems FEBRUARY 1990 ELECTRONIC IN DUSTWI ES ASSOCIATION ENGINEERING DEPARTMENT .T:ETf INDUSTRAY ASSOCIATION Copyright Electronic Industries Alliance Provid

23、ed by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-EIA TIA-250-C 90 m 3234b00 0008889 4 m NOTICE EIA/TIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between manu

24、facturers 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 and Publications shall not in any respect preclude any member or no

25、nmember of EIA/TIA from manufacturing or selling products not conforming to such Standards and Publications, nor shall the existence of such Standards and Publications preclude their voluntary use by those other than EIA/TIA members, whether the standard is to be used either domestically or internat

26、ionally. Recommended Standards and Publications are adopted by EIA/TIA without regard to whether or not their adoption may involve patents on articles, materials, or processes. By such action, EIA/TIA does not assume any liability to any patent owner, nor does it assume any obligation whatever to pa

27、rties adopting the Recommended Standard or Publication. This EIA/TIA Specification is considered to have International Standardization implication, but the International Electrotechnical Commission activity has not progressed to the point where a valid comparison between the EIA/TIA Specification an

28、d the IEC document can be made. This Specification does not purport to address all safety problems associated with its use or all applicable regulatory requirements. It is the responsibility of the user of this Specification to establish appropriate safety and health practices and to determine the a

29、pplicability of regulatory limitations before its use. APPROVED FOR USE IN THE NECQ SYSTEM FOR USE AS NQ/EIA/TIA-546AA00. COPYRIGHT I990 Published by ELECTRONIC INDUSTRIES ASSOCIATION Engineering Department 2001 Pennsylvania Ave, N.W. Washington, D.C. 20006 (Temporary Headquarters 1722 Eye St., N.W.

30、 Washington, D.C. 20006) PRICE: $20.00 All rights reserved Printed in U.S.A. Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-EIA TIA-250-C 90 m 3234600 0008890 O m , P ABSTRACT This Stan

31、dard specifies the transmission performance characteristics of tnnsmission systems that carry 525 line NTSC television signais intended for broadcasting service or related high-quality applications. Definitions! standards, and methods of measurement are given for both the video and related audio sig

32、nais being carried from a few hundred feet to thousands of miles, including satellite transmission. Although baseband performance is specified, transmission by any analog or digital technique or mixture thereof is anticipated. A comprehensive appendix of transmission considerations completes this do

33、cument. Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-EIA TIA-250-C 90 m 3239600 0008891 2 m 4 ELECTRICAL PERFORMANCE STANDARDS FOR TELEVISION TRANSMISSION SYSTEMS TABLE OF CONTENTS Pa

34、ge No . INTRODUCTION 1 SCOPE 1 2 DEFINITIONS OF TELEVISION TRANSMISSION TERMS . 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 Television Transmission System . Television Signal Composite Video Signal . Short-Haul Transmission System . Medium-Haul Transmission System Long-Haul Transmission Syste

35、m . Satellite Transmission System . Digital Transmission System End-to-End Network . Repeater or Satellite . IRE . Average Picture Level 2 2 2 2 2 2 4 4 4 4 4 4 BASEBAND INTERFACE PARAMETERS 4 1. 2. 3 . 4 . 4.1 Video Signal Channel 4.1.1 Input Impedance . 4.1-2 Input Signal Level 4.1.3 Load Impedanc

36、e . 4.1.5 Output Signal kvel . Polarity of the Video Signal . 4.1.4 Output Impedance 4.1.6 4.1.7 Nonuseful DC Component 4.2 Audio Signal Channel 4.2.1 Input Impedance . Input Test Signal Level 4.2.3 Load Impedance 4.2.4 Output Impedance Output Test Signal Level . Polarity of the Audio Signal . 4.2.2

37、 4.2.5 4.2.6 5.0 PERFORMANCE CHARACTERISTIC SUMMARY 6 . PERFORMANCE CHARACTERISTICS OF THE VIDEO SIGNALCX?A.“ANL 6.1 Linear Distortions . 4 4 7 7 7 8 8 8 8 8 9 9 10 10 11 11 11 11 . ii - . Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or

38、 networking permitted without license from IHS-,-,-ELA TIA-250-C 90 W 3234600 0008892 4 W TABLE OF CONTENTS (Cont) 6.1.1 Amplitude Response as a Function of Frequency . 6.1.2 Linear Chrominance Distortion . 6.1.2.1 Chrominance-to-Luminance Gain Inequality (Relative Chrominance Level) 6.1.2.2 Chromin

39、ance-to-Luminance Delay Inequality (Relative Chrominance Time) 6.1.3 Envelope Delay Response as a Function of Frequency . 6.1.4 Field-Time Waveform Distortion 6.1.5 Line-Time Wavefoim Distortion 6.1.6 Short-Time Waveform Distortion . 6.1.7 Long-Time Waveform Distortion . 6.1.7.1 Damped Low-Frequency

40、 Distortion (Bounce) . 6.1.7.2 Line-by-Line DC Offset (Piano Keying) 6.1.8 Insei-tion Gain and Variation . 6. 2 Nonlinear Distortions . 6.2.1 Luminance Nonlinearity 6.2.2 Luminance-to-Chrominance Intermodulation 6.2.2.1 Differential Gain 6.2.2.2 Differential Phase 6.2.3 Chrominance-to-Luminance Inte

41、rmodulation 6.2.4 Chrominance Nonlinearity . 6.2.4.1 Chrominance Nonlinear Gain 6.2.4.2 Chrominance Nonlinear Phase 6.2.5 Dynamic Gain 6.2.5.1 Dynamic Gain of the Video Signal 6.2.5.2 Dynamic Variation of the Synchronizing Signal . . 6.2.6 Transient Synchronizing Signal Nonlinearity 6.3 Interference

42、 6.3.1 Signal-to-Noise Ratio . 6.3.2 Signal-to-Low Frequency Noise Ratio (Below 10 kHz) . . 6.3.3 Signal-to-Periodic Noise Ratio (300 Hz to 4.2 MHz) 6.4 Availability of the Video Signal . PERFORMANCE CHARACTERISTICS OF THE AUDIO SIGNAL CHANNEL . 7.1 O 7 . Amplitude Response as a Function of Frequenc

43、y O . Page No . 10 14 14 16 16 18 19 19 21 21 22 22 23 23 23 23 25 26 27 27 27 28 28 29 29 30 30 30 34 35 35 35 iii 2- Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TABLE OF CONTENTS (

44、Cont) 7.2 Total Harmonic Distortion . 7.3 Signal-to-Noise Ratio . 7.4 Insertion Gain . 7.5 15-krHz Audio Channels for Stereo Application Page No . 35 36 37 37 . _- EINTIA-250-C 7.5.1 Gain Difference Between Stereo A and B Channels . 7.5.2 Phase Difference Between Stereo A and B Channels 7.5.3 Crosst

45、alk Coupling Loss Between Stereo A and B Channels . Audio-to-Video Transmission Time Differential 7.6 7.7 Availability of the Audio Signal APPENDIX. Supplementary Information . 37 38 38 38 39 40 iv . Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo repr

46、oduction or networking permitted without license from IHS-,-,-I I. EIA TIA-250-c qo rn 323400 oooaq4 a 1EIM.U-250-C Page 1 ELECTRICAL PERFORMANCE STANDARDS FOR TELEVISION TRANSMISSION SYSTEMS (From Standards Proposal No PN-1742 formulated under the cognizance of EIA Subcommittee lX-14.10 on Televisi

47、on Transmission Systems) i. INTRODUCTION The intent of this standard is to specify the minimal transmission performance characteristics, consistent with good engineering practice, of television transmission systems for transmission of 525-line NTSC color or monochrome video and associated audio sign

48、als suitable for television broadcasting or for similar application. These limits are used for the acceptance of new systems or restoration of existing systems after maintenance. It should be noted that transmission systems utilize analog, digital, or a mixture of analog and digital techniques. 2, S

49、COPE This standard covers systems that transmit television signals by radio or metallic or optical cable using analog or digital techniques. There will be those systems used specifically for the transmission of television signals from a broadcasting studio to its associated television transmitter (studio to transmitter link or STL), or from a transmitting point