BS 6556-1:1985
Withdrawn
Low speed digital signals for use in coal mines. Specification for optical coupling
Hardcopy , PDF
English
01-31-1985
05-22-2026
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Withdrawn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Withdrawn:This standard is no longer used
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