GOST 2.763-85 * UDC 003.62:621.3:006.354 Group T52 Interstate standard Unified system for design documentation Graphical symbols in electrical circuits. DEVICE WITH Pulse Code Modulation Unified system for design documentation. Graphic designations in electric diagrams. Devices of pulse-code modulation OKS 0002 Resolution of the USSR State Committee on Standards of December 20, 1985 № 4460 deadline for implementing the set with 07.01.1986 * edition (October 2000) with Amendment number 1, approved in March 1994 (MIS 5-94) 1. This standard applies to electrical wiring products for all industries performed manually or by automated means, and establishes a contingent of graphic symbols and characters qualifying devices with pulse-code modulation (PCM) and their chains. (Revised edition, Alt. № 1). 2. Qualifying symbols used together with conventional graphic symbols PCM devices and circuits are shown in Table. 1. 3. Legend PCM devices and circuits are shown in Table. 2. 4. Aspect ratio of conventional graphic symbols for devices with pulse-code modulation is presented in Appendix 1. 5. Terms used in the standard, and their explanations are given in Appendix 2. Table 1: Name Designation 1. Timing, timing of C 2. Coincidence COINC 3. Comparison of COMP or = 4. Quantization 5. Linear quantization 6. Nonlinear quantization 7. Discretization 8. Sampling frequency Fs Note. If needed symbols complement the value of frequency, for example, the frequency of 8 kHz Fs = 8 kHz 9. Note cycle pulses. If needed symbols complemented by a number indicating the number of timeslots in a cycle, for example, 32 10. Note Sverhtsikl pulses. If needed symbols complemented by a number indicating the number of cycles in sverhtsikle pulses, for example, 16 11. Note codec CDC. To the symbol as necessary add: a) the letter S (the symbol of the secondary group), which indicates the codec to encode the secondary group system with frequency division multiplexing; CDC-S b) the letter T (the symbol of the tertiary group), which indicates the codec to encode a group of tertiary system Frequency division multiplexing; CDC-T c) the letter R (the symbol of broadcast signal), which indicates a codec for encoding the analog broadcast signal to a digital signal and vice versa CDC-R 12. Muldeks MULDEX or MX 13. Transmuldeks TMULDEX or TMX Note. To the symbol as necessary add: a) the letter S (the symbol of the secondary group), which indicates transmuldeks, which converts the secondary group of frequency division channels to digital signals; TMX-S b) the letter P (the symbol of the primary group), which indicates transmuldeks that converts primary group of the system with frequency division multiplexing to digital signals TMH-P Table 2: Name Designation 1. Multiplexer (as a transmission of muldeksa) 2. Multiplexer primary system Note. Numeric value from 1 to n denote the level of the hierarchy of systems, PCM 3. Demultiplexer (as the receiving part muldeksa) 4. Demultiplexer of the primary system 5. Muldeks 6. Muldeks n-th system 7. Muldeks Broadcasting Notes: 1. Allowed the designation muldeksa 2. Numeric value from 1 to n denote the level of the hierarchy of PCM: a) MX1 represent the primary instrument channel digital trunking, b) denote the MX2 equipment secondary temporary trunking 3. Muldeks primary system with a 32-timeslots and sverhtsiklom consisting of 16 cycles of 8. Transmultiplexer (converter analog to digital groups) 9. Transdemultipleksor (converter digital to analog groups) 10. Transmuldeks (transmultiplexer and transdemultipleksor) 11. Codec 60-channel 12. Codec broadcasting (eg the maximum transmitted frequency of 15 kHz) 13. Chain sampling, indicating the sampling frequency 14. Timing chain 15. Quantization circuit 16. Linear quantization circuit 17. Nonlinear quantization circuit 18. Coincidence circuit 19. Digital compressor 20. Digital expander 21. Comparator 22. Unilateral regenerator 23. Regenerator sided 24. Regenerator sided with the automatic alignment 25. Comparing amplifier 26. Chain of associations and (or) separation APPENDIX 1 Reference Ratio conventional graphic symbols for devices with pulse-code modulation Name of Image 1. Circuit blocks, the device 2. Quantization circuit 3. Chain sampling, indicating the sampling frequency APPENDIX 2 Reference Terms used in this standard and their explanations Term Explanation Codec Short title, expressing the union of coding and decoding devices into one Muldeks Short title, expressing the union of the multiplexer and demultiplexer in a single device Transmuldeks abbreviated name of the device that converts the analog signal with divided frequency channels into a digital signal with a channel separation in time and vice versa Posted 07/07/2008 GOST on "Electrical, lighting, security systems," GOST 15597-82 Fixtures for industrial buildings. General specifications GOST 2.702-75 Unified system for design documentation. Rules for making electronic circuits with GOST 2.752-71 Unified system for design documentation. Graphical symbols in diagrams. Robot device GOST 2.755-87 Unified system for design documentation. Graphical symbols in electrical circuits. Device switching and contact connections GOST 2.756-76 * Unified system for design documentation. Graphical symbols in diagrams. Is often perceived electromechanical devices GOST 2.757-81 * Unified system for design documentation. Graphical symbols in diagrams. Elements of the switching field for switching systems GOST 2.758-81 Unified system for design documentation. Graphical symbols in diagrams. Signal Technology GOST 2.762-85 * Unified system for design documentation. Graphical symbols in electrical circuits. Frequencies and frequency bands for transmission systems GOST 2.764-86 Unified system for design documentation. Graphical symbols in electrical circuits. Integrated optoelectronic display elements GOST 2.768-90 Unified system for design documentation. Graphical symbols in diagrams.
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