BS EN 60244 is a series on methods of measurement for radio transmitters. Radio transmitters an electronic device that produces radio waves with an antenna. BS EN 60244-9 contains the method of measurement to assess the performance characteristics of television transposers. To assess all other characteristics, BS EN 60244-9 is to be used in conjunction with the publications quoted in clause 2.
BS EN 60244-9 is intended to be used for type tests and acceptance or factory tests. The performance characteristics measured in accordance with BS EN 60244-9 make possible the comparison of the results of measurements made by different observers. The performance characteristics measured in accordance with BS EN 60244-9 make possible the comparison of the results of measurements made by different observers.
Note: Limiting values for acceptable performance are not covered by BS EN 60244-9 but, in connection with the presentation of measured characteristics, some data are given for clarity.
BS EN 60244-9 on television transposers is useful for:
The transmitter itself generates a radio frequency alternating current, which is applied to the antenna. BS EN 60244-9 comprise one part dealing with general characteristics, with cross-references to relevant CCIR publications and the Radio Regulations, and a number of specialized parts, each dealing with particular types of transmitters. It is not mandatory to measure all the described characteristics. Additional measurements may be carried out by agreement between customer and manufacturer. BS EN 60244-9 defines a television transposer that is used to refer to the equipment in a television relay station that is connected to the feeder terminations of the receiving aerial and the transmitting aerial and in which a frequency transposition is performed without demodulation and modulation in some television relay stations, equipment is used in which no frequency transposition takes place. Such equipment is termed an “active deflector”. Most of the measurements described in BS EN 60244-9 also apply to active deflectors.
The transposer is tested under the conditions which include Any device for the suppression of unwanted signals, irrespective of whether or not it is located inside the transposer, shall be considered as a part of the transposer for the purpose of this standard. Unless otherwise specified, the measurements are made under normal operating conditions and at rated output power. If required, they are repeated under extreme environmental conditions, in accordance with the equipment specification. The power supply voltage and environmental conditions shall be stated with the measurement results. Due to practical limitations on the position of receiving and transmitting aerials, there will be some coupling between them. Using BS EN 60244-9 you can specify the method of measurement to assess the performance characteristics of television transposers.
IEC 60244-9:1993