RZV - Radiocommunication

gives the conditions for measuring the performance parameters of terrestrial digital transmitters and for facilitating the comparison of measurements which are carried out by different personnel. It contains details of specially selected methods for determining the most important performance parameters of digital transmitters. The measurement methods described apply to a limited number of performance parameters, i.e. those which can give rise to ambiguous interpretation due to the use of different methods and conditions. They are neither restrictive nor mandatory: measurements can be chosen for each particular case. If necessary, additional tests can be carried out but they shall comply with those standards which have been established by other study groups, subcommittees of the IEC or other international or suitably accredited organizations.

Intended to be used for type tests and acceptance or factory tests.

Applies to television transmitters and transposers operating in accordance with television systems for monochrome and colour transmission employing 625 or 525 lines as described in CCIR publications. Deals with the application of insertion test signal measurement to television transmitters and transposers. This method of measurement is useful for checking the line time performance of the transmitters or transposers during programme service and provides a convenient method of testing transmission performance stability during acceptance tests. May also be used as an alternative means of carrying out some of the line time measurements described in EN 60244-5 and 60244-9.

Intended for type tests and acceptance and factory tests. The performance characteristics measured in accordance with this standard make it possible to compare the results of measurements made by different observers.

Applies to manufacturers' descriptive leaflets providing information on transmitters and transposers for sound and television broadcasting. Lays down uniform methods of expressing the performance characteristics of transmitters and transposers for sound and television broadcasting. Lists the essential characteristics and technical information needed for the appraisal and comparison of equipment. Provides, where appropriate, cross-references to standardized methods of measurement for the performance characteristics listed.

Contains the specification sheets described in EN 60244-12-1.

Applies to transposers operating in accordance with CCIR Recommendation 450 for FM sound broadcasting at VHF, including stereophony. Also covers requirements for other multiplexed subcarrier services. Lays down detailed methods of measurements, selected and recommended for assessing the essential performance and general characteristics of FM sound broadcasting transposers.

Applies to measurements of electromagnetic fields from operational transmitting equipment to ensure that the transmissions do not constitute a potential hazard to workers or to the general public.

Applies to all classes of transmitters for sound and television broadcasting. Deals with the interface between a transmitter (or system of transmitters) and the supervisory equipment which is intended to remotely monitor and/or control the transmitter(s). Details the interconnections and facilities to be provided with a view to achieving compatibility between different types and makes of transmitters and supervisory equipment.

Assesses the perfomance characteristics of television transposers. Enables the comparison of the results of measurements made by different observers.

Deals with the itnerface between a transmitter (or system of transmitters) and the supervisory equipment which is entended to remotely monitor and/or control the transmitter(s). It details the interconnections and facilities to be provided with a view to achieving compatibility between different types and makes of transmitters and supervisory equipement.

Details a mesurement method for external intermodulation products (intermodulation components) caused by two or more transmitters using the same or adjacent antennas. Describes recommended methods of assessing the performance of radio broadcast transmitters.

To be used for type tests and acceptance or factory tests or to check the characteristics of a demodulator measuring television transmitters and transposers.

Describes the frequency bands used for broadcasting below 30 MHz: Low frequency (LF) band - from 148,5 kHz to 283,5 kHz, in ITU Region 1 [1]* only; Medium frequency (MF) band - from 526,5 kHz to 1 606,5 kHz, in ITU Regions 1 [1] and 3 [1] and from 525 kHz to 1 705 kHz in ITU Region 2 [1]; High frequency (HF) bands - a set of individual broadcasting bands in the frequency range 2,3 MHz to 27 MHz, generally available on a Worldwide basis. These bands offer unique propagation capabilities that permit the achievement of: Large coverage areas, whose size and location may be dependent upon the time of day, season of the year or period in the (approximately) 11 year sunspot cycle; Portable and mobile reception with relatively little impairment caused by the environment surrounding the receiver.

Applies to all transmitters for A3 class of operation. Applies also to radiotelephony transmitters with 1, 2, 3 or 4 channels for A3A, A3B, A3H and A3J class of operation, and to frequency modulated transmitters for monophonic sound broadcasting. Applies in part to transmitters for A7A and A7B class of operation. HD 236.4 itself describes standard operating conditions, standard modulation input arrangements and frequencies (Section One). It also describes standard methods to be used for measuring input impedance, the amplitude/frequency characteristics and the intelligible crosstalk (Section Two).

Defines the conditions and methods of measurement to be used to ascertain the performance of a radio transmitter and to make possible the comparison of the results of measurement made by different observers.

Deals with the measurement of the power of the components, either in the outer part of the emitted spectrum or far remote from the centre part of the spectrum, that may cause interference to other emissions. The measuring conditions and methods of measurement apply to transmitters of various classes of emission.

Describes the conditions and methods of measurement for assessing the performance of transmitters with respect to wanted and unwanted modulation. The methods of measurement described are restricted to those properties that may be liable to ambiguous interpretation due to the application of different methods and conditions of measurement and are intended for type tests and acceptance tests but may also be used for factory tests.

This standard deals with the safety requirements applicable to fixed sited systems and equipments primarily intended for the reception, processing and distribution of sound signals, television signals and their associated data signals using all applicable transmission media. It covers all types of systems such as: - CATV-systems; - MATV-systems; - individual receiving systems; and all types of equipment installed in such systems. As far as applicable it is also valid for mobile and temporarily installed systems e.g. caravans. Additional requirements may apply, for example in relation to: - electricity distribution systems (overhead or underground); - other telecommunication services distribution systems; - water distribution systems; - gas distribution systems; - lightning protection systems. This standard is valid for all items from the receiving antennas to the system outlets (subscriber equipment input). This standard does not cover subscriber equipment. This standard is intended to provide specifically for the safety of the system, personnel working on it, subscribers and subscriber equipment. It deals only with safety aspects and is not intended to define a standard for the protection of equipment used in the system.

This standard defines the characteristics of equipment used in the headends of terrestrial broadcast and satellite receiving systems (without satellite outdoor units and without those broadband amplifiers in the headend as described in EN 50083-3). The satellite outdoor units for FSS are described in standard ETS 300 158, for BSS in standard ETS 300 249. This standard does not relate to subscriber equipment, such as receivers, tuners, decoders, video recorders, etc. This standard covers the frequency range 5 MHz to 1750 MHz, identifies performance requirements for certain parameters, lays down data publication requirements for certain parameters, stipulates methods of measurements, introduces minimum requirements defining quality (Q) grades. As far as possible this standard only deals with the interfaces between headend components and only explains the function of the devices if this is necessary to support the description of the interfaces. Coder, transcoder, encrypter, decrypter etc. are not described in this specification. If such devices are used in headends, the relevant parameters for RF, video, audio and data interfaces have to be met. According to the definitions in clause 2 headends are divided into the following three quality levels: grade 1: local headend/remote headend; grade 2: hub headend, grade 3: MATV headend/individual reception headend. Practical experience has shown these types meet most of the technical requirements necessary for supplying a minimum signal quality to the subscribers. This classification shall not be considered as a requirement but as the information for users and manufacturers on the minimum quality criteria of the material required to install networks of different sizes. The system operator has to select appropriate material to meet the minimum signal quality at the subscriber's outlet and to optimize cost performance, taking into account the size of the network and local circumstances

This standard - applies to all broadband amplifiers used in cabled distribution systems; - covers the frequency range 5 MHz to 1 750 MHz; - applies to one-way and two-way equipment; - lays down the basic methods of measurement of the operational characteristics of the active equipment in order to assess the performance of this equipment; - identifies the performance specifications that shall be published by the manufacturers; - states the minimum performance requirements of certain parameters. Amplifiers are divided into the following two quality levels: Grade 1 - Amplifiers typically intended to be cascaded. Grade 2 - Amplifiers for use typically within an apartment block, or within a single residence, to feed a few outlets. Practical experience has shown these types meet most of the technical requirements necessary for supplying a minimum signal quality to the subscribers. This classification shall not be considered as a requirement but as the information for users and manufacturers on the minimum quality criteria of the material required to install networks of different sizes. The system operator has to select appropriate material to meet the minimum signal quality at the subscriber's outlet, and to optimise cost/performance, taking into account the size of the network and local circumstances. All requirements and published data are understood as guaranteed values within the specified frequency range and in well matched conditions.

This standard applies to receiver leads, system outlets, splitters and subscriber taps, passive one and two port devices comprising filters, attenuators, equalizers, galvanic isolators, power injectors, cable splices, terminating resistors and transfer points, but excluding coaxial cables. It - covers the frequency range 5 MHz to 1 750 MHz; - identifies performance requirements for certain parameters; - lays down data publication requirements for certain parameters; - stipulates methods of measurement; - introduces minimum requirements defining quality (Q) grade(s). There are three Q grades for taps and splitters and two Q grades for passive one and two port devices. There is only one Q grade for system outlet and receiver lead. Different networks require the same performance and, when integrating networks, upgrading will be avoided. Practical experience has shown these types meet most of the technical requirements necessary for supplying a minimum signal quality to the subscribers. This classification shall not be considered as a requirement but as the information for users and manufacturers on the minimum quality criteria of the material required to install networks of different sizes. The system operator has to select appropriate material to meet the minimum signal quality at the subscriber's outlet and to optimize cost/performance, taking into account the size of the network and local circumstances. All requirements and published data shall be understood as guaranteed values within the specified frequency range and in well matched conditions. For passive equipment of quality grades other than mentioned above, manufacturers shall specify minimum values for : - return loss; - isolation; - directivity; using the relevant measurement methods and the presentation of table 1.

This standard - applies to all optical transmitters, receivers, amplifiers, splitters, directional couplers, isolators, multiplexers, connectors and splices used in cabled distribution systems; - covers the frequency range 5 MHz to 1 750 MHz; - identifies guaranteed performance requirements for certain parameters; - lays down data publication requirements with guaranteed performance; - describes methods of measurement for compliance testing. All requirements and published data relate to minimum performance levels within the specified frequency range and in well matched conditions as might be applicable to cabled distribution systems for television and sound.