IEC 60864-2:1997 pdf download – Standardization of interconnections betweenbroadcasting transmitters or transmitter systemsand supervisory equipment – Part 2: lnterface standards for systems using data bus type interconnections

IEC 60864-2:1997 pdf download – Standardization of interconnections betweenbroadcasting transmitters or transmitter systemsand supervisory equipment – Part 2: lnterface standards for systems using data bus type interconnections.
This part of IEC 60864 is applicable to all classes of transmitters for sound and television broadcasting. This standard may not, however, be appropriate for low power equipment. for simple transmitting systems which consist of a small number of controlled equipment items and for certain special purpose transmitters.
Any facilities and interconnections not directly associated with the transmitters, for example intruder alarms, mast lighting. etc., are excluded from this standard.
This part of lEG 60864 deals with the interlace between a transmitter (or system of transmitters) and the supervisory equipment which is intended 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 equipment.
2 Normative references
The following normative documents contain provisions which, through reference In this text, constitute provisions of this part of IEC 60864. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this part of lEG 60864 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below Members of IEC and ISO maintain registers of currently valid International Standards.
lEG 60559; 1989, Binary tloatng-point arithmetic for microprocessor systems
lEG 60625-2: 1993. Programmable measuring instruments — Interface system (byte serial, bit parallel) — Part 2: Codes, formats, protocols and common commands
ISO/IEC 8482: 1993. Inlormahon technology — Telecommunications and information exchange between systems — Twisted pair multipoint interconnections
IEEE 1118: 1990. Microcontroller-system. Serial control bus
3 General aspects
3.1 Definitions
For the purpose of this part of lEG 60864. the following definitions apply.
3.1.1 (N + 1) dedIcated reserve system; (N + I) reserve system where the same transmitter is atways dedicated as the reserve.
3.1.2 (N • 1) reserve system: System of transmitters in which Only one reserve is provided for N (N 1) transmitters in operation.
See figure A,5.
31.3 actIve reserve System of transmitters in which the reserve is in continuous use and contributes to the outpul power, for example, parallel operation.
See figure A,3.
3.1.4 alarm: Indication of an abnormal status.
3.1.5 automatic: Term used to describe a system which acts in a preoetermined way. without the external intervention of an operator.
See figure 1.
3.1.6 automatic changeover: Changeover action, which occurs in a preselected way, without the external intervention of an operator.
3.1.7 basIc transmitter Individual transmitters in a system Consisting of more than one transmitter.
3.1.8 changeover Transfer from one signal path or item ot equipment to another, normally a spare or reserve, provided as part of a transmitter system.
3.1.9 command Action by means of which any part of a transmitter system is made to change Its status.
3.1.10 command circuit: Circuit in a supervisory system, by means of which each command is sent to the transmitter.
3.1.11 control system: System used to operate a transmitter, transmitter system and/or the associated equipment by means or one or more commands.
See figure I.
3.1.12 drIve (excitation) (exciter): Low level radio frequency part of a transmitter or transmitter system.
The drive may be either
— unmodulated, for example, a simple crystal oscillator (sometimes referred to as excitation), or
— modulated, sometimes followed by amplifiers to form a “drive transmitter”.
See figure A.8.
3.1.13 fault (failure) (tall): Abnormal condition of the equipment which usually results in the generation of an alarm.
3.1.14 IndicatIon. Information concerning the status, or quality, relating to an Item of equipment or system.