HOME   Cart(1)   Quotation   About-Us Tax PDFs Standard-List
Powered by Google-Search & Google-Books www.ChineseStandard.net Database: 189759 (22 May 2022)

GY/T 194-2003 (GYT 194-2003)

GY/T 194-2003_English: PDF (GYT194-2003)
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)Related StandardStatusPDF
GY/T 194-2003English259 Add to Cart 3 days Specifications and methods of measurement on optical node used in CATV systems GY/T 194-2003 Valid GY/T 194-2003

BASIC DATA
Standard ID GY/T 194-2003 (GY/T194-2003)
Description (Translated English) Specifications and methods of measurement on optical node used in CATV systems
Sector / Industry Radio, Film & TV Industry Standard (Recommended)
Classification of Chinese Standard M74
Classification of International Standard 33.160
Word Count Estimation 9,949
Date of Issue 2003-10-13
Date of Implementation 2003-12-01
Drafting Organization State Administration of Radio, Film and Television Broadcasting measurement test center
Administrative Organization National Radio and Television Standardization Technical Committee
Summary This standard specifies the cable system optical workstation technical requirements and methods of measurement. For the same measurement uncertainty can ensure that any equivalent measurement methods may also be used. Dispute should be based on this standard shall prevail. This standard applies to optical workstation cable systems development, production, application and operation and maintenance.

GY/T 194-2003
Specifications and methods of measurement on optical node used in CATV systems
GY
Central Republic Radio, Film and Television
Optical Workstation for Cable TV System
Technical requirements and measurement methods
Specifications and methods of measurement
on optical node used in CATV systems
Shi 2.2003-12-01 Real 003-10-13
China National Radio, Film and Television Administration issued standard cloth
Foreword
This standard is based on the needs of China ’s cable television network construction and operation, and refers to the performance parameters of optical workstations at home and abroad.
The technical requirements and measurement methods of the uplink optical transmitter are specified. The technical requirements and measurement methods of its downstream optical receiver are mainly referenced
GB/T 11318.1-1996 "Cable distribution system equipment and components for television and sound signals-Part 1. General specifications" and GY/T 143-2000
"Technical Conditions and Measurement Methods for Amplifier Optical Transmitters and Receivers in Cable TV Systems". In the development of this standard, a comprehensive analysis
A large number of test data and the specific requirements for the application of cable television systems. At the same time, both the advanced requirements and the production costs are taken into account in the index requirements.
The need for this and use.
Appendix A to this standard is an informative appendix.
This standard is under the jurisdiction of the National Radio and Television Standardization Technical Committee.
This standard was drafted. Radio and Television Metrology and Testing Center of the State Administration of Radio, Film and Television, Wuxi Lutong Electronic Technology Co., Ltd.,
Sichuan Jiuzhou Electronic Technology Co., Ltd.
The main drafters of this standard. Nie Mingjie, Gong Bo, Yao Ruihong, Cui Yan, Xiong Chengguo, Du Liping, Liu Dinglin, Gu Jiming.
Technical requirements and measurement methods of optical workstations for cable television systems
1 Scope
This standard specifies the technical requirements and measurement methods for optical workstations in cable television systems. For tasks that ensure the same measurement uncertainty
Any equivalent measurement method can also be used. In case of dispute, this standard shall prevail.
This standard applies to the development, production, use, operation and maintenance of optical workstations for cable television systems.
2 Normative references
The clauses in the following documents have become the clauses of this standard after being referenced. For dated references, all subsequent
Neither amendments (excluding errata) or revised versions are applicable to this standard, however, parties who have reached an agreement under this standard are encouraged to study
Is the latest version of these files available? For undated references, the latest version applies to this standard.
GB 5465.2-1985 Graphical symbols for electrical equipment
GB/T 11318.1-1996 Cable and distribution system equipment and components for television and sound signals-Part 1. General specifications
GY/T 143-2000 Cable TV system AM optical transmitter and receiver technical conditions and measurement methods
3 terms and definitions
The following terms and definitions apply to this standard.
3.1
Return optical transmitter
An optical transmitter that transmits an uplink transmission signal.
3.2
Forward optical receiver
Optical receiver for receiving downlink transmission signals.
3.3
Return optical receiver
Optical receiver for receiving uplink transmission signals.
3.4
Optical node
A transmission device with functions such as a downlink optical receiver and an uplink optical transmitter.
3.5
Noise power ratio (NPR)
The total power (or power spectrum) of the digital modulation signal output by the uplink optical receiver within the specified temperature, specified link loss and return bandwidth
The ratio of the density) to the total noise power (or power spectral density) within the return bandwidth is expressed in decibels.
3.6
Noise power ratio dynamic range
When the noise