Sign In |Help & Support
ALL SECTORS
  • ALL SECTORS
  • GB(National Standard)
  • CB(Shipping)
  • CECS(Engineering Construction)
  • CJ(Urban Construction)
  • CY(News and Publication)
  • DB(Provincial Standard)
  • DL(Electricity & Power)
  • DZ(Geology & Mineralogy)
  • FZ(Spinning & Textile)
  • GA(Public Security)
  • HB(Aviation)
  • HG(Chemical Industry)
  • HJ(Environmental Protection)
  • JB(Machinery)
  • JC(Building Materials)
  • JG(Building & Construction)
  • JJ(Metering)
  • JT(Highway & Transportation)
  • LY(Forestry)
  • MT(Coal)
  • NB(Energy)
  • NY(Agriculture)
  • QB(Light Industry)
  • QC(Automobile & Vehicle)
  • QJ(Aerospace)
  • SH(Petrochemical)
  • SJ(Electronics)
  • SL(Water Resources)
  • SN(Commodity Inspection)
  • SY(Oil & Gas)
  • TB(Railway & Train)
  • YB(Ferrous Metallurgy)
  • YC(Tobacco)
  • YD(Telecommunication)
  • YY(Medical Device)
Database: 365,228(8 Aug 2026)

second signal lock

second signal lock, Total:89 items.

The international standard classification for "second signal lock" includes: Railway engineering in general , Construction of railways , Telecommunications in general , Components and accessories in general , Railway rolling stock , Switching and signalling systems .

The Chinese standard classification for "second signal lock" includes: Signal equipment , Railway engineering , Petrochemical and chemical industry engineering , Basic standards and general methods , Communication equipment in general , Basic standards and general methods , Data communication equipment .


Professional Standard - Railway

  • TB/T 1528.3-2002 Railway signal power supply panel -- Part 3: All-interlocking signal power supply panel
  • TB/T 1123-1992 Compilation Principles of Railway Signal Interlocking Diagram
  • TB/T 3327-2015 Phase interruption protector for railway signal
  • TB/T 1117-1961 Technical Conditions of Electric Lock for Signal
  • TB/T 1528.4-2002 Railway signal power supply panel -- Part 4: Computer-interlocking signal power supply panel
  • TB 10071-2000 Code for design of railway signal interlocking within stations

Professional Standard - Chemical Industry

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

  • GB/T 14733.7-1993 Terminology for telecommunications Oscillations,signals and related devices
  • GB/T 28809-2012 Railway applications - Communication, signaling and processing systems - Safety related electronic systems for signaling
  • GB/T 14733.7-2008 Terminology for telecommunication - Oscillations,signals and related devices
  • GB/T 9540-1988 Wideband modem for synchronous data transmission at a data signalling rate higher than 72 kbit/s using 60~108kHz group band circuits

Professional Standard - Post and Telecommunication

  • YD/T 4294-2023 Nanosecond GNSS Relative Timing Technical Requirements and Test Methods

Military Standard of the People's Republic of China-General Armament Department

  • GJB 8152-2013 Measuring method for temporal-profile of sub-nanosecond laser pulse by the streak camera

Taiwan Provincial Standard of the People's Republic of China

  • CNS 5955-1982 Method of Test for Combination Mechanism Padlocks

Society of Motion Picture and Television Engineers (SMPTE)

International Telecommunication Union (ITU)

  • ITU-T Q.441-1989 Interregister Signalling - Signalling Code - Specifications of Signalling Systems R1 and R2 (Study Group XI) 10 pp
  • ITU-T Q.450-1989 Interregister Signalling - General - Specifications of Signalling Systems R1 and R2 (Study Group XI) 2 pp
  • ITU-T Q.454-1989 Interregister Signalling - the Sending Part of the Multifrequency Signalling Equipment - Specifications of Signalling Systems R1 and R2 (Study Group XI) 2 pp
  • ITU-T Q.455-1989 Interregister Signalling - the Receiving Part of the Multifrequency Equipment. Range, Speed and Reliability of Interregister Signalling - Specifications of Signalling Systems R1 and R2 (Study Group XI) 4 pp
  • ITU-T Q.440-1989 Interregister Signalling - General - Specifications of Signalling Systems R1 and R2 (Study Group XI) 4 pp
  • ITU-T Q.451-1989 Interregister Signalling - Definitions - Specifications of Signalling Systems R1 and R2 (Study Group XI) 2 pp
  • ITU-T Q.478-1989 Signalling Procedures - Relay and Regeneration of R2 Interregister Signals by an Outgoing R2 Register in a Transit Exchange - Specifications of Signalling Systems R1 and R2 (Study Group XI) 2 pp
  • ITU-T Q.457-1989 Interregister Signalling - Range of Interregister Signalling - Specifications of Signalling Systems R1 and R2 (Study Group XI) 4 pp
  • ITU-T Q.452-1989 Interregister Signalling - Requirements Relating to Transmission Conditions - Specifications of Signalling Systems R1 and R2 (Study Group XI) 1 pp
  • ITU-T Q.458-1989 Interregister Signalling - Reliability of Interregister Signalling - Specifications of Signalling Systems R1 and R2 (Study Group XI) 5 pp
  • ITU-R REPORT BT.1081-1-1990 The relative timing of sound and picture signals
  • ITU-R RAPPORT BT.1081-1 FRENCH-1990 The relative timing of sound and picture signals
  • ITU-R INFORME BT.1081-1 SPANISH-1990 The relative timing of sound and picture signals
  • ITU-T Q.442-1989 Interregister Signalling - Pulse Transmission of Backward Signals A-3, A-4, A-6 or A-15. Multifrequency Signalling Equipment - Specifications of Signalling Systems R1 and R2 (Study Group XI) 2 pp
  • ITU-T O.81 NOTE SPANISH-2000 A measuring signal (multitone test signal) for fast measurement of amplitude and phase for telephone type circuits

British Standards Institution (BSI)

  • BS 7378-3:1998 Apparatus for connection to public telecommunications systems using the Digital Access Signalling System No. 2 (DASS 2) via a 2048 kbit/s CCITT Recommendation G.703 interface - Requirements for apparatus for connection to Channel Associated Signalling Sys
  • BS 7378-1:1997 Apparatus for connection to public telecommunications systems using the Digital Access Signalling System No. 2 (DASS 2) via a 2048 kbit/s CCITT Recommendation G.703 interface - General requirements
  • BS EN 50129:2018(2019) Railway applications – Communication, signalling and processing systems – Safety related electronic systems for signalling
  • BS EN 61603-8-1:2004 Transmission of audio and/or video and related signals using infrared radiation . Digital audio and related signals
  • BS EN 61603-2:1997 Transmission of audio and/or video and related signals using infra-red radiation. Transmission systems for audio wide band and related signals

CZ-CSN

  • CSN 34 5543-1972 Graphical symbols for electrical diagrams of railway signalling and interlocking devices
  • CSN 34 2650-1998 Railway signalling and interlocking equipment Level crossing protection equipment

Defense Logistics Agency

SCC

  • MIL MIL-F-18405-1955 FUSE, FIRECRACKER, 30-SECOND (NO S/S DOCUMENT)
  • MIL MIL-DTL-2726/20C-2013 Receptacle with Switch, Electrical, 30-Ampere, 450-Volt, 1-Phase, Interlocking, Grounded (Symbol No. 916.1)
  • DANSK DS/EN 50129:2003 Railway applications - Communication, signalling and processing systems - Safety related electronic systems for signalling
  • AENOR UNE-EN 50129 CORR:2005 Railway applications - Communication, signaling and processing systems - Safety related electronic systems for signaling
  • DANSK DS/EN 50129/AC:2019 Railway applications – Communication, signalling and processing systems – Safety related electronic systems for signalling
  • DIN EN 50129:2019 Railway applications - Communication, signalling and processing systems - Safety related electronic systems for signalling; German version EN 50129:2018 + AC:2019
  • AENOR UNE-EN 50129:2020 Railway applications - Communication, signaling and processing systems - Safety related electronic systems for signaling
  • DIN EN 50129 E:2017 Draft Document - Railway applications - Communication, signalling and processing systems - Safety related electronic systems for signalling; German version prEN 50129:2016
  • MIL MIL-DTL-2726/19D-2014 Receptacle with Switch, Electrical, 30-Ampere, 450-Volt, Alternating Current, 60-Hertz, 3-Phase, Interlocking, Ground (Symbol No. 915.1)
  • MIL MIL-DTL-2726/20B-2005 RECEPTACLE WITH SWITCH, ELECTRICAL, 30 - AMPERE, 450 - VOLT, 1 - PHASE, INTERLOCKING, GROUNDED (SYMBOL NO. 916.1) (SUPERSEDING MIL-R-2726/20A)
  • MIL MIL-DTL-2726/19E-2019 Receptacle with Switch, Electrical, 30-Ampere, 450-Volt, Alternating Current, 60-Hertz, 3-Phase, Interlocking, Ground (Symbol No. 915.1)
  • DANSK DS/EN 61603-8-1:2004 Transmission of audio and/or video and related signals using infrared radiation - Part 8-1: Digital audio and related signals
  • CEI EN 61603-8-1:2005 Transmission of audio and/or video and related signals using infrared radiation - Part 8-1: Digital audio and related signals
  • 05/30133969 DC IEC 62425. Railway applications. Communication, signalling and processing systems. Safety related electronic systems for signalling

IET - Institution of Engineering and Technology

ETSI - European Telecommunications Standards Institute

  • PRI-ETS 300 230-1992 Radio Equipment and Systems (RES); Land Mobile Service Binary Interchange of Information and Signalling at 1200 Bit/s (BIIS 1200)
  • PRETS 300 230-1996 Radio Equipment and Systems (RES); Land Mobile Service; Binary Interchange of Information and Signalling (BIIS) at 1 200 Bits/s (BIIS 1 200) (Second Edition)
  • ETS 300 230-1996 Radio Equipment and Systems (RES); Land Mobile Service; Binary Interchange of Information and Signalling (BIIS) at 1 200 Bits/s (BIIS 1 200) (Second Edtion)

Association Francaise de Normalisation

  • NF Z82-144*NF ETS 300144:1997 Integrated Services Digital Network (ISDN). Audiovisual services. Frame structure for a 64 kbit/s to 1920 kbit/s channel and associated syntax for inband signalling.
  • NF F74-129*NF EN 50129:2018 Railway applications - Communication, signalling and processing systems - Safety related electronic systems for signalling
  • NF C97-045-8-1*NF EN 61603-8-1:2005 Transmission systems for audio and/or video and related signals using infrared radiation - Part 8 : digital audio and related signals

American National Standards Institute (ANSI)

  • ANSI T1.302-1989 Digital Processing of Voice-Band Signals-Line Format for 32 kbit/s Adaptive Differential Pulse-Code Modulation (ADPCM

VDE - VDE Verlag GmbH@ Berlin@ Germany

  • VDE 0831-129-2003 Railway applications - Communications@ signalling and processing systems - Safety related electronic systems for signalling; German version EN 50129:2003
  • VDE 0831-129 BERICHTIGUNG 1-2010 Railway applications - Communication@ signalling and processing systems - Safety related electronic systems for Signalling - German version EN 50129:2003@ Corrigendum to DIN EN 50129 (VDE 0831-129):2003-12; German version CENELEC-Cor.:2010 to EN 50129:200
  • VDE 0831-129-2017 Railway applications - Communication@ signalling and processing systems - Safety related electronic systems for signalling; German version prEN 50129:2016
  • VDE 0831-129-2019 Railway applications - Communication@ signalling and processing systems - Safety related electronic systems for signalling; German version EN 50129:2018 + AC:2019

Lithuanian Standards Office

  • LST EN 50129-2004 Railway applications. Communication, signalling and processing systems. Safety related electronic systems for signalling
  • LST EN 50129-2004/AC-2010 Railway applications. Communication, signalling and processing systems. Safety related electronic systems for signalling
  • LST ETS 300 230 Leid.2-2006 Radio Equipment and Systems (RES);Land mobile service;Binary Interchange of Information and Signalling (BIIS) at 1 200 bit/s (BIIS 1 200)

RU-GOST R

  • GOST 28749-1990 Signal conversion equipments for simultaneous duplex data transmission on the switched channels general telephone network with the speed 2400 bit/s. Types and basic parameters

GSO

  • OS GSO IEC 62425:2014 Railway applications - Communication, signalling and processing systems - Safety related electronic systems for signalling
  • GSO IEC 62425:2014 Railway applications - Communication, signalling and processing systems - Safety related electronic systems for signalling

ES-UNE

  • UNE-EN 50129:2020 Railway applications - Communication, signalling and processing systems - Safety related electronic systems for signalling
  • UNE-EN 61603-8-1:2004 Transmission of audio and/or video and related signals using infrared radiation -- Part 8-1: Digital audio and related signals (Endorsed by AENOR in August of 2004.)

ITU-R - International Telecommunication Union/ITU Radiocommunication Sector

AENOR

  • UNE-EN 50129:2005 Railway applications - Communication, signalling and processing systems - Safety related electronic systems for signalling
  • UNE 21302-702:1992 ELECTROTECHNICAL VOCABULARY. OSCILLATIONS, SIGNALS AND RELATED DEVICES.

Danish Standards Foundation

  • DS/EN 50129:2004 Railway applications - Communication, signalling and processing systems - Safety related electronic systems for signalling
  • DS/EN 61603-8-1:2004 Transmission of audio and/or video and related signals using infrared radiation - Part 8-1: Digital audio and related signals

European Committee for Electrotechnical Standardization(CENELEC)

  • prEN 50129 Railway Application - Communication, signalling and processing system - Safety related electronic systems for signalling

RO-ASRO

Conference of European Post Telecommunication (CEPT)

  • CEPT T/CD 01-12 E-1983 Concerning the Specification of Engineering Requirements for Three Types of Plug-in DCE?s Operating with a User Data Signalling Rate of 2,400 Bits/s

German Institute for Standardization

  • DIN EN 61603-8-1:2004-08 Transmission of audio and/or video and related signals using infrared radiation - Part 8-1: Digital audio and related signals (IEC 61603-8-1:2003); German version EN 61603-8-1:2004
  • DIN IEC 60381-1:1985-11 Analogue signals for process control systems; direct current signals; identical with IEC 60381-1, edition 1982