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Std ID |
Description (Standard Title) |
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YD/T 612-1993
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Reliability index and test method of facsimile communication equipment
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YD/T 613-1993
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Technical requirement for networking of domestic satellite communication TDM/QPSK/FDMA (2Mbit/s) systems
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YD/T 614-1993
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Technical conditions of telephone network number inquiry system
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YD/T 615-1993
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Technical conditions of telephone network number inquiry system
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YD/T 616-1993
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(2048, 8448, 34368, 139264kbit/s digital transmission tester technical conditions)
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YD/T 617-1993
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Technical conditions of PCM voice channel characteristics testers
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YD/T 618-1993
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(139264kbii/s BER tester technical conditions)
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YD/T 619-1993
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(34368kbit/s BER tester technical conditions)
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YD/T 620-1998
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Technical conditions of 2048kbit/s, 8448kbit/s, 34368kbit/s and 139264kbit/s transmission analyzers
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YD/T 621-1993
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Technical conditions of 2048kbit/s, 8448kbit/s, 34368kbit/s and 139264kbit/s transmission analyzers
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YD/T 622-1993
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(34368 kbit/s BER analyzer technical conditions)
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YD/T 623-1993
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(139264kbit/s BER analyzer technical conditions)
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YD/T 624-1993
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Test method of electronic teleprinters
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YD/T 625-1993
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Technical conditions of psophometer (noise meter)
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YD/T 626-1993
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Technical requirement and test method of Chinese teleprinters
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YD/T 627-1993
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Parameters of digital exchange digital relay interfaces (2048kbit/s) and transmission characteristics between digital relay interfaces as well as their test methods
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YD/T 627-2012
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Parameters, transmission characteristics and test methods of the digital relay interface (2048kbit/s) for digital switch
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YD/T 628-1993
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Test method for call handle capacity of digital exchange (Busy hour call attempt)
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YD/T 629.1-1993
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Monitoring method of attenuation changes in optical fiber transmission Transmission power monitoring method
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YD/T 629.2-1993
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Monitoring method of attenuation changes in optical fiber transmission Backscatter monitoring method
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YD/T 630-1993
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(Copper polyolefin insulated aluminum sheathed local communication cable into the network requirements)
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YD/T 631-1993
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Technical requirement and test method of 2/34Mbit/s aggregate number-jump digital multiplex equipment
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YD/T 632-1993
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(Mailbag)
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YD/T 633-1993
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IF modem equipment operating at 34Mbit/s
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YD/T 634-1993
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IF modem equipment operating at 8Mbit/s
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YD/T 635-1993
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Inspection and test methods of telegraph terminal equipment
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YD/T 636-1993
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(Teletypewriter packaging)
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YD/T 637-1993
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(Communication with the DC - DC conversion equipment)
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YD/T 637-2006
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DC-DC Conversion Equipment for Telecommunication
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YD/T 638.10-1993
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Type designation for radio, microwave and satellite communication equipments
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YD/T 638.11-1993
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Type designation for digital communication equipment
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YD/T 638.1-1993
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Type designation for products of posts and telecommunications industry General rules
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YD/T 638.12-1993
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Type designation for communications measuring instruments
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YD/T 638.13-1993
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Type designation for accessory equipments of telephone exchange
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YD/T 638.14-1993
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Type designation system for telephone sets
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YD/T 638.15-1994
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Type designation for data communication equipment
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YD/T 638.2-1993
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Type designation system for optical communication equipment
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YD/T 638.3-1993
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(Communication power supply equipment type designation)
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YD/T 638.3-1998
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The naming rule of types of telecommunication power supply
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YD/T 638.4-1993
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(Postal equipment type designation)
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YD/T 638.5-1993
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Type designation system for telephone switchboards
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YD/T 638.6-1993
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Type designation for telegraph communication equipment
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YD/T 638.7-1993
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Type designation for carrier communication equipment
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YD/T 638.8-1993
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Type designation for facsimile communication equipments and automated office equipment
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YD/T 638.9-1993
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(Pouch type designation)
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YD/T 639-1993
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Management method of type designation for products in posts and telecommunications industry
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YD/T 640-1993
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Technical requirement and test method of RF connectors for communication equipment
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YD/T 640-2012
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General requirements and test methods for radio-frequency connectors of telecommunication equipment
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YD/T 641-1993
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Technical requirement and test method of LF connectors for communication equipment
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YD/T 641-2012
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General requirements and test methods for low frequency connectors of telecommunication equipment
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YD/T 642-1993
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Reliability indicator and test method of carrier communication equipment
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YD/T 643-1993
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Sophisticated method of electronic components (disks)
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YD/T 644-1993
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Sophisticated method of complete communication equipment
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YD/T 645-1994
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Outdoor optical cables for communication Criteria for quality grading
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YD/T 646-1994
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Long-haul terrestrial analog radio relay system Quality grading criteria of color TV modulation and demodulation equipment (one TV + one accompanying sound program)
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YD/T 647-1994
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Quality grading criteria of HF and LF noise testers
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YD/T 648-1994
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Quality grading criteria of 620kHz balanced-type variable attenuator
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YD/T 649-1994
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Quality grading criteria of 620kHz selection level meter
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YD/T 650-1994
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Quality grading criteria of 620kHz level oscillator
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YD/T 651-1994
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Quality grading criteria of PCM voice channel characteristics testers
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YD/T 652-1994
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Quality grading criteria of 2048, 8448 kbit/s error code tester
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YD/T 653-1994
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Quality grading criteria of IF modem equipment operating at 34Mbit/s
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YD/T 654-1994
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Quality grading criteria of optical repeater operating at 34368kbit/s
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YD/T 655-1994
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Optical transmitter and receiver operating at 34368kbit/s Criteria for quality grading
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YD/T 656-1994
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Optical transmitter and receiver operating at 8448kbit/s Criteria for quality grading
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YD/T 657-1994
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Optical transmitter and receiver operating at 139264kbit/s Criteria for quality grading
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YD/T 658-1994
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Quality grading criteria of IF modem equipment operating at 140Mbit/s
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YD/T 659-1994
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Quality grading criteria of VHF digital communication equipment
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YD/T 660-1994
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Quality grading criteria of VHF analog communication equipment
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YD/T 661-1994
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(Laser imagesetter quality grading standards)
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YD/T 662-1994
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Quality grading criteria of IF modem equipment operating at 8Mbit/s
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YD/T 663-1994
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Quality grading criteria of IF modem equipment operating at 2×34Mbit/s
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YD/T 664-1994
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Quality grading criteria of 2GHz digital microwave transceiver
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YD/T 665-1994
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Quality grading criteria of 4GHz digital microwave transceiver
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YD/T 666-1994
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Quality grading criteria of 6GHz digital microwave transceiver
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YD/T 667-1994
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Quality grading criteria of 7GHz digital microwave transceiver
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YD/T 668-1994
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Quality grading criteria of 8GHz digital microwave transceiver
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YD/T 669-1994
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Quality grading criteria of 2048 kbit/s 30-channel PCM multiplex equipment
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YD/T 670-1994
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Quality grading criteria of microwave tower
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YD/T 671-1994
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Quality grading criteria of second order digital multiplex equipment operating at 8448 kbit/s and using positive justification
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YD/T 672-1994
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Quality grading criteria of 2/34Mbit/s aggregate number-jump digital multiplex equipment
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YD/T 673-1994
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Quality grading criteria of third order digital multiplex equipment operating at 34368 kbit/s and using positive justification
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YD/T 674-1994
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Quality grading criteria of fourth order digital multiplex equipment operating at 139264 kbit/s and using positive justification
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YD/T 675-1994
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Quality grading criteria of digital SPC private branch exchanger
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YD/T 676-1994
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Quality grading criteria of space-division SPC private branch exchanger
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YD/T 677-1994
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Quality grading criteria of Alphabetic and Chinese-character teleprinters
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YD/T 678-1994
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Quality grading criteria of electronic teleprinters
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YD/T 679-1994
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Quality grading criteria of PBC electromechanical subscriber line concentrator
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YD/T 680-1994
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Quality grading criteria of inverter equipment for communication
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YD/T 681-1994
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Quality grading criteria of inverter equipment for communication
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YD/T 682-1994
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Quality grading criteria of semiconductor rectifier installations for communication
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YD/T 683-1994
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Quality grading criteria of power distribution equipment for communication
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YD/T 684-1994
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Quality grading criteria of parabolic antenna for microwave relay communication system
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YD/T 685-1994
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Quality grading criteria of four-way accompanying sound modem equipment for color TV analog terrestrial microwave relay system
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YD/T 686-1994
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Quality grading criteria of automatic telephone sets
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YD/T 687-1994
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Quality grading criteria of space-division SPC telephone exchanges
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YD/T 688-1994
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Quality grading criteria of digital SPC telephone exchanges
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YD/T 689-1994
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Quality grading criteria of rural and urban local subscriber loop carrier equipment
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YD/T 690-1994
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Quality grading criteria of rural and urban local subscriber loop carrier equipment
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YD/T 691-1994
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Quality grading criteria of automatic message switching equipment
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