BS 6328-4:1985
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Apparatus for connection to private circuits run by certain public telecommunication operators Specification for apparatus for connection to telegraph circuits using SCVF signalling
Hardcopy , PDF
02-08-2013
English
31-10-1985
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Foreword
Committees responsible
Specification
1. Scope
2. Definitions and abbreviations
3. Reference level
4. General requirements
5. Operational requirements
6. Electrical requirements for apparatus other than
specialized test apparatus
7. Electrical requirements
8. Connection requirements
9. Marking
10. Information to be provided by the supplier
Appendices
A. Advisory information on British Telecommunications
plc telegraph private circuits using SCVF
signalling
B. Determination of return loss or impedance
C. Measurement of longitudinal conversion loss
D. Measurement of transverse conversion loss
E. Measurement of longitudinal power level
F. Signal power level determination
G. Measurement of output frequency
H. Advisory test for receive margin at 50 bauds
J. Advisory test for transmitter distortion
Tables
1. Channel allocations
2. Total transmit telegraph distortion
3. Effective receive margin with FA and FZ nominal
4. Effective receive margin with FA and FZ +/- 6 Hz
Figures
1. Load ZL for return loss measurements
2. Longitudinal power level limits as a function of
frequency
3. Power level limits in the frequency range d.c. to
3400 Hz
4. Power level limits at frequencies above 3.4 kHz
5. Circuit for the powering of apparatus
6. Use of type A and type B modems
7. Circuit for the measurement of longitudinal
conversion loss
8. Circuit for the measurement of transverse
conversion loss
9. Circuit for the measurement of longitudinal power
level
10. Circuit for the measurement of power level and
frequency
11. Advisory test circuit for the measurement of
receive margin
12. Advisory test circuit for the measurement of
transmit distortion
Specifies requirements for apparatus, including specialized test apparatus, to be connected to telegraph private circuits using SCVF signalling either directly or indirectly. Provides for safety of public telecommunications systems from electrical conditions originating in the connected apparatus and vice-versa, and minimizing interference with other users and the public telecommunication operators\' main transmission plant.
| Committee |
TCT/301
|
| DevelopmentNote |
Supersedes 82/61160 DC and 86/64538 DC. (09/2005) Inactive for the new design. (01/2011)
|
| DocumentType |
Standard
|
| Pages |
32
|
| PublisherName |
British Standards Institution
|
| Status |
Withdrawn
|
| BS 6301:1982 | Specification for safety requirements for apparatus for connection to British Telecommunications networks |
| BS 6320:1982 | Specification for modems for connection to the British Telecommunications public switched telephone network |
| BS 4727-3:GRP03(1971) : 1971 | GLOSSARY OF ELECTROTECHNICAL POWER TELECOMMUNICATION ELECTRONICS LIGHTING & COLOUR TERMS - TERMS PARTICULAR TO TELECOMMUNICATIONS & ELECTRONICS - TELEGRAPHY INCLUDING FACSIMILE TERMINOLOGY |
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