DIN EN Cable networks for television signals, sound signals and interactive services – Part 9: Interfaces for CATV/SMATV headends. Buy CEI EN CABLE NETWORKS FOR TELEVISION SIGNALS, SOUND SIGNALS AND INTERACTIVE SERVICES – PART 9: INTERFACES FOR . BS EN Cable networks for television signals, sound signals and interactive services – Interfaces for CATV/SMATV headends and similar.
|Published (Last):||9 November 2016|
|PDF File Size:||18.13 Mb|
|ePub File Size:||10.42 Mb|
|Price:||Free* [*Free Regsitration Required]|
The aperiodicity can be expressed as a short-term change in the transport rate. Each line driver source has a balanced output and the corresponding line receiver destination a balanced input see Figure In addition references are made to all other parts of EN series Cable networks for television signals, sound signals and interactive services and in particular for RF, video and audio interfaces to part 5: Here each transport packet is played out with a constant delay between the Sync bytes.
Initialization of the transmitter is done with negative RD, the transmitter may assume either the positive or the negative RD. Rn data arriving on a coaxial cable are first coupled through a connector and coupling network to a circuit which recovers clock and data.
The Transport Packets shall be presented to Layer-2 either as contiguous byte packets, or separated by 16 dummy bytes, or contiguous Reed Solomon encoded byte packets.
The attenuation of the f law. The basic unit of Layer-0 is the link. Learn more about the cookies we use and how to change your settings.
EVS-EN – Estonian Centre for Standardisation
Electromagnetic compatibility for networks EN Optical fibres – Part The links are unidirectional point to point. To maximise equipment interoperability, it is suggested that wn with an ASI output should be designed to work with equipment with a small ASI receiver buffer.
In the case of fibre-optic transmission, a light-sensitive detector converts light levels fn electrical levels which are then passed to a clock and data recovery circuit. The line driver and receiver shall be LVDS-compatible, i.
BS EN 50083-9:2002
The present document contains a clause providing a description of the design issues confronting ASI equipment em. The main functions are: The receiver shall present a properly aligned byte stream after the receipt of two K Maximum common mode signal: Each 8B 5083-9 point has two entries in the 10B code point map corresponding to the positive and negative disparity representation for that 8B code point.
RD at the end of any sub-block is positive, if the sub-block 05083-9 more ones than zeros, or if the sub-block is or Annex E gives some proposals for how such a circuit can be designed. Transport packet data word 8 bit: As an example, consider a signal which passes through several re-broadcast steps, such as the one depicted in Figure A.
It is required that bit synchronization shall occur in not more than 1 ms. In some cases, an ASI output may work with an ASI input with a smaller buffer than is specified for the output, however Fn interoperability under these circumstances cannot be guaranteed. RD is calculated based on two subblocks: This specification is similar to EN and EN Deterministic Jitter is the sum of data dependent jitter and duty cycle distortion. The encoding rules are as follows: The use of a constant transmission rate permits a constant receiver clock.
The loop constants K1 and K2 are chosen to make the 50083–9 factor 0, and the loop bandwidth 52,5 Hz, assuming a 10 kHz sample rate. Consequently, its inverse is the rate at which sync bytes arrive.
A general solution for this cannot be given. The clock frequency fp shall not exceed 13,5 MHz. These two cases are identified in the protocol diagrams of Figures 1 and 2 where also the scope of this specification is delineated. This note is intended to explain some of the causes of problems and to offer guidelines to ASI implementers that will encourage maximum em. One in particular, the comma character K This unidirectional optical fibre or copper coaxial cable carrying data from the transmitting node to the receiving node is referred to as 50083–9 link.
For undated references the latest edition of the publication referred to applies. Hence this measure is used in the recommendations below. Each optical fibre shall have a dispersion characteristic in the range shown in Table B.
The parameters shall be met over the temperature, voltage, and lifetime range of the system.