We noticed you’re not on the correct regional site. Switch to our AMERICAS site for the best experience.
  • BS 6403:1983

    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
    Add to Watchlist
    This Standard has been added successfully to your Watchlist.
    Please visit My Watchlist to see all standards that you are watching.
    Please log in or to add this standard to your Watchlist.
    We could not add this standard to your Watchlist.
    Please retry or contact support for assistance.
    You need to be logged in to add this standard to your Watchlist.
    Please log in now or create an account to add.
    You already added this Product in the Watchlist.

    SPECIFICATION FOR SIMPLE TELEX TERMINALS USING SINGLE CHANNEL VOICE FREQUENCY SIGNALLING FOR CONNECTION TO BRITISH TELECOMMUNICATIONS TELEX NETWORK

    Available format(s):  Hardcopy, PDF

    Withdrawn date:  02-08-2013

    Language(s):  English

    Published date:  01-01-1983

    Publisher:  British Standards Institution

    Add to Watchlist

    Add To Cart

    Table of Contents - (Show below) - (Hide below)

    Foreword
    Committees responsible
    Specification
    1 Scope
    2 Abbreviations and definitions
    3 General requirements
    4 Physical signal characteristics
    5 Technical signal characteristics
    6 Reliability
    7 Marking
    8 Instructions for use
    9 Information to be provided by the supplier for
        testing purposes
    Appendices
    A The international telegraph alphabet No. 2 with UK
        options
    B General conditions for tests
    C Measurement of physical signal characteristics
    D Measurement of technical signal characteristics
    E Repeat calling
    F Reliability tests
    Tables
    1 Allocation of plug pins
    2 Spectral power limits
    3 Tolerances of components and physical quantities
    4 Repeat call rates
    Figures
    1 Power spectral density limits at frequencies above
        3.4 kHz
    2 Measurement of longitudinal output
    3 Longitudinal output power limits as a function of
        frequency
    4 Derivation of d.c. wetting current
    5 Test circuit for measuring transmit frequency and
        output signal power
    6 Test circuit for measuring spectral power up to
        8.9 kHz
    7 Relative positioning of equipment for spectral power
        measurements
    8 Measurement of transmit distortion
    9 Test circuit for spectral power measurements above
        8.9 kHz
    10 Measurement of receiver margin
    11 Measurement of effect of hits
    12 Hit profile (type 1)
    13 Hit profile (type 2)
    14 Measurement of return loss
    15 Measurement of longitudinal conversion loss
    16 Transverse conversion loss
    17 Telegraph character measurement
    18 Measurement of technical signal characteristics

    Abstract - (Show below) - (Hide below)

    Gives requirements for simple telex terminals (STT) for direct connection to the British Telecommunications (BT) telex network which aims to minimize the risk of interference to other subscribers and provide compatibility with BT telex network and other telex terminals connected to the network. Lists characteristics of suitable apparatus. Covers both an STT capable of working to an electromechanical exchange or a stored programme control SPC exchange. Includes the international telegraph alphabet No. 2 with UK options, general conditions for tests, measurement of physical and technical characteristics, repeat calling and reliability tests.

    General Product Information - (Show below) - (Hide below)

    Committee TCT/2
    Development Note Supersedes 82/60005 DC (09/2005) Inactive for the new design. (01/2011)
    Document Type Standard
    Publisher British Standards Institution
    Status Withdrawn

    Standards Referenced By This Book - (Show below) - (Hide below)

    BS 7362:1990 SPECIFICATION FOR TELEX TERMINAL APPARATUS FOR CONNECTION TO PUBLIC TELECOMMUNICATIONS OPERATORS' TELEX NETWORKS

    Standards Referencing This Book - (Show below) - (Hide below)

    BS 6312:1982 SPECIFICATION FOR PLUGS FOR USE WITH BRITISH TELECOMMUNICATIONS LINE JACK UNITS
    BS 6301:1982 SPECIFICATION FOR SAFETY REQUIREMENTS FOR APPARATUS FOR CONNECTION TO BRITISH TELECOMMUNICATIONS NETWORKS
    BS 6317:1982 SPECIFICATION FOR SIMPLE TELEPHONES FOR CONNECTION TO PUBLIC SWITCHED TELEPHONE NETWORKS RUN BY CERTAIN PUBLIC TELECOMMUNICATION OPERATORS
    BS 2011-2.1EC(1977) : 1977 AMD 7921 ENVIRONMENTAL TESTING - TESTS - TEST Ec DROP AND TOPPLE, PRIMARILY FOR EQUIPMENT-TYPE SPECIMENS
    BS 4727-3:GRP03(1971) : 1971 GLOSSARY OF ELECTROTECHNICAL POWER TELECOMMUNICATION ELECTRONICS LIGHTING & COLOUR TERMS - TERMS PARTICULAR TO TELECOMMUNICATIONS & ELECTRONICS - TELEGRAPHY INCLUDING FACSIMILE TERMINOLOGY
    • Access your standards online with a subscription

      Features

      • Simple online access to standards, technical information and regulations
      • Critical updates of standards and customisable alerts and notifications
      • Multi - user online standards collection: secure, flexibile and cost effective