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.
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The following Table A. The aperiodicity of some ASI output streams and the receiver buffer size they require for proper reception is illustrated in the following diagrams. The optical characteristics of the links are described in the Table A. The following dates were fixed: Note that the loop still acquires synchronization in about samples, or 0,07 s.
Reseaux de distribution par cables destines aux signaux de radiodiffusion sonore, de television et aux services interactifs. Considering that the transmission data rate is derived from the user data rate, longer links can be achieved for lower user data rates.
An example of an ASI interoperability problem is where equipment receiving an ASI data stream occasionally drops out of lock, or never achieves lock at all. One in particular, the comma character K This can be accomplished by several techniques [such as a triggering the oscilloscope on the measured waveform or b providing both the oscilloscope and the pulse output circuits with the same clock signal].
After every packet a small gap is present where no data bytes arrive at the receiver. Fibre length shall be sufficient to ensure equilibrium mode distribution. Active wideband equipment for coaxial cable networks EN Part 4: The masks allow for HF jitter present in the timing signal associated with the source of interface signal When using an oscilloscope technique to determine pulse compliance with the mask, it is important that successive traces of the pulses overlay in order to suppress the effects of low frequency jitter.
This unidirectional optical fibre or copper coaxial cable carrying data from the transmitting node to the receiving node is referred to as a link. This is intentional as it leaves maximum implementation flexibility for different applications.
Want access to British Standards? The basic unit of Layer-0 is the link. This SSI specification clause applies only to the point-to-point 05083-9 link. The clock frequency fp depends on the transmission rate. Transport packet timing Transport packets may be presented to Layer-2 either as a burst of contiguous bytes as shown in Figure Sn.
This can be accomplished by, several techniques [such as a triggering the oscilloscope on the measured waveform or b providing both the oscilloscope and the pulse output circuits with the same clock signal]. The example in Table C. In the case of fibre-optic application, the serial bit stream is passed through a driver circuit which drives an optical transmitter LED or LASER which is coupled to a fibre-optic cable through 500833-9 connector. Describes physical interfaces for the interconnection of signal processing devices, such as in uplink stations.
Because the link and the TS are synchronous, the bit justification operation is not needed. Proceed to Checkout Continue Shopping. Physical requirements The physical layer defines the transmission media, the drivers and receivers, and the transmission speeds. The packet synchronization process is not a part of this ASI Transmission protocol definition. In addition references are made to all 50083-99 parts of EN series Cable networks for television signals, sound signals and interactive services and eh particular for RF, video and audio interfaces to part 5: These two cases are identified in the protocol diagrams of Figures 1 and 2 where also the scope of this specification is delineated.
The cable shall have a coaxial pair shall be assumed 5083-9 follow an approximate maximum insertion loss of 12 dB at a frequency of 70 MHz. The present document assumes that the receiver clock is linked to the transmission clock, but is silent about how to achieve this in practice. Methods of measurements are given in ENchapter 3. Electromagnetic compatibility for networks EN Optical fibres – Part A detailed specification of ASI is provided in normative annex B.
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EVS-EN – Estonian Centre for Standardisation
The attenuation of the f law. Clock recovery In the receiver the clock recovery circuit extracts the transport clock directly from the encoded data stream. Worldwide Standards We can source any standard from anywhere in the world.
Search all products by. The electrical characteristics of the connector shall permit it to be used over the frequency range of the specified interface.