BS 6556-1:1985
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Low speed digital signals for use in coal mines. Specification for optical coupling
Hardcopy , PDF
English
31-01-1985
22-05-2026
Foreword
Committees responsible
Specification
1 Scope
2 Definitions
3 General conventions
4 Data link configurations
5 Channel allocation
6 Data rate
7 Electrical network parameters
8 System performance
9 Cable connections
10 Environment
11 Maximum output parameters
12 Marking
13 Documentation
Appendix
A Cable parameters used for system performance test
Figures
1 Simplex operation
2 Duplex point-to-point operation
3 Multi-drop operation
4 Originate channel
5 Answer channel
6 Core configuration of cable
Defines electrical input and output characteristics of intrinsically safe transmitting and receiving circuits forming a low speed digital data transmission link in which data is transmitted using current loop techniques.
| Committee |
W/-
|
| DevelopmentNote |
Supersedes 82/76934 DC and 88/70376 DC (09/2005) Reviewed and confirmed by BSI, January 2011. (12/2010)
|
| DocumentType |
Standard
|
| Pages |
14
|
| PublisherName |
British Standards Institution
|
| Status |
Withdrawn
|
Withdrawn:This standard is no longer used
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