BS 5425-1:1986
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Coaxial cable for wideband distribution systems Specification for single unit, semi-airspaced cables for wideband distribution systems
Hardcopy , PDF
15-08-1996
English
31-01-1986
Foreword
Committees responsible
Specification
Section one. General
1 Scope
2 Definitions
Section two. Constructional requirements
3 Materials
4 Dimensions
Section three. Electrical requirements
5 Mean characteristic impedance (Zm)
6 Attenuation
7 Uniformity of characteristics impedance
8 Screening effectiveness
9 Conductor d.c. resistance
10 Insulation resistance
11 Sheath spark test
Section four. Mechanical requirements
12 Bending
13 Longitudinal pull of conductors other than copper
covered steel conductors
Section five. Identification, labelling and packaging
14 Identification
15 Labelling
16 Packaging
Appendices
A Recommended schedule of testing
B Mechanical test methods
C Electrical test methods
Tables
1 Resistance factor and minimum elongation for
conductors
2 Overall diameter and diameter over dielectric
3 Minimum sheath thickness
4 Mean characteristic impedance
5 Maximum attenuation
6 Minimum return loss
7 Maximum surface transfer impedance
8 Maximum conductor d.c. resistance
9 Minimum pulling force for 3 % length extension at
20 + or - 5 deg C
10 Minimum barrel dimensions (coiling and drumming
diameters)
11 Mandrel diameters for bending tests
Figures
1 Attenuation measurement: substitution method
2 Attenuation measurement: power ratio method
3 Uniformity of characteristic impedance measurement:
sweep frequency: return loss bridge method
4 Surface transfer impedance apparatus for frequencies
up to 30 MHz
5 Surface transfer impedance apparatus for frequencies
above 30 MHz
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