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है”ह”ह

IS 14131-2 (1995): Radio frequency cables, Part 2:Particular requirements for single-unit coaxial cables foruse in cabled distribution system [LITD 6: Wires, Cables,Waveguides and Accessories]

Indian Standard

RADIOFREQUENCY CABLES PART 2 PARTICULAR REQUIREMENTS FOR SINGLE-UNIT COAXIAL

CABLES FOR USE IN CABLED DISTRIBUTION SYSTEM

UDC 621.315-212.029.5 : 621.397-743

q3 BIS 1995

BURE’AU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHL 110002

April 1995 Price Group 3

Wires and Cables for Electronic Equipment Sectional Committee, LTD 18

FOREWORD

This Indian Standard ( Part 2 ) was adopted by the Bureau of Indian Standards, after the draft finalized by the Wires and Cables for Electronic Equipment Sectional Committee had been approved by the Electronics and Telecommunication Division Council.

The series of standards on Radio Frequency Cables comprise of the following parts:

Part 1 General requirements and tests for single-unit coaxial cables for use in cabled drstribution systems

Part 2 Particular requirements for single-unit coaxial cables for use in cabled distribution systems

This standard specifies the particular requirements of solid polyethylene and cellular polyethylene coaxial cables for use in cabled distribution system..

For the purpose of deciding whether a particular requirement for this standard is complied with, the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with IS 2 : 1960 rRules for rounding off numerical values ( revised )‘. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.

RADIO

IS 14131 ( Part 2 ) : 1995

Indian Standard

FREQUENCYCABLES PART 2 PARTICULAR REQUIREMENTS FOR SINGLE-UNIT COAXIAL

CABLES FOR USE IN CABLED DISTRIBUTION SYSTEM

I SCOPE

This standard specifies ditneusious, coustructiou details aud requirements of solid polyethylene aud cellular polyethylene ( cellular is same as air/plastic dielectric cottstruction ) coaxial cables for use iu cabled distribution system such as cable TV.

2 REFERENCES

2.1 The following standards are referred to in this standard:

IS No.

5026 : 1987

9943 : 1981

13176 : 1991

14131 (Part 1) : 1994

Title

General requirements aud tests for radio frequeucy cables ( first mvision )

Characteristic itnyedauces aud ditneusious of radio frequency coaxial cables

PVC iusulatiou and sheath of telecotntnuuicatioe cables

Radio frequency cables : Part 1 General requiremeuts aud tests for siugle-unit coaxial cables for use in cabled distribution system

3 TERMINC~LOGY

3.1 For the purpose of this standard, the teruts aud definitions of IS 5026 : 1987 aud IS 1431 ( Part 1 ) : 1994 shall apply.

4 GENERAL REQlJIREMENTS AND TESTS

4.0 Provisions of3.0 ofIS 14131 ( Part 1 ) : 1994 shall

atMy.

4.1 Frerpency Range

Provisions of 3.1 of IS 14131 ( Part 1 ) : 1994 shall apply.

4.2 Attenuation and Classitkatiun

Provisims of 3.2 of IS 14131 ( Part 1 ) : 1994 shall spply.

4.3 Mean Characteristic Impedance

Provisious of 3.3 of IS 14131 ( Part 1 ) : 1994 shall apply.

4.4 Return Loss

Provisious of 3.4 of IS 14131 ( Part 1 ) : 1994 shall apply.

4.5 Screening Etliciency

Uuder consideration.

5 GENERAL CONSTRUCTION

5.1 The outliae coustructioual feature of cable is showu iu Fig. 1.

1

INNER CONOUCTOR

OUTER CONDUCTOR

Fw. 1 OUILINE DKAWING - CWXLQCALU

6 C:ONSTRIICTIONAL REQUIREMENTS

6.1 The constructional details of coaxial cable with solid yolyethyleuc dielectric are given iu Table 1.

6.2 Tbr constructiaual details of coaxial cables with cellular yolyrthylcuc dielectric are giveu in Table 2.

7 PEKFORMANCE REQIJIREMENTS

7.1 The requirrmcuts of thr coaxial cables with solid yolycthylcue dielectric are given in Table 3.

7.2 The requirciucuts otthc coaxial cables with cellular dielectric are given iii Table 4.

IS 14131 ( Part 2 ) : 1995

Table 1 Constructional Details of (Coaxial Cables with Solid Polyethylene Dielectric

( Clulrsc (I.1 )

All dimensions in millimelres.

SI Item IIu(nils No.

Size Iksignstion

(11 c-4 (3)

i) Inner conductor Solid annealed bare copper (diameter)

ii) Dielectric Solid polyethylene (diameter)

iii) Outer conductor a) I-laminated longitudinal aluminium composite tape Thickness, Min Overlap, Mnz

b) II-Braid of tinned copper wire Coverage, Min Diameter. Min

iv) Barrier layer Polyethylene terephth- alate/ polyester transparent tape overlap, Min

80% 0.12

20%

80% 0..15

20%

v) Jacket a) PVC’ Type TM2 (as per IS 13176 : 1991) sheath thickness, Min

0.6 0.8

b) Maximum outer diameter over jacket

c) Cblour

6.3 7.3

80% 0.15

20%

0.9

I 1 .o

ll(‘A

(7)

1.7

1 1.5 i 0.20

0.075 3%

80% 0.15

2OYCJ

1 .O

15.5

1 Black +

NOTES

1 These types of cables are suitable for radio frequency connector with screw ampling typicillly for use in 75 61 c~~blcd distribution system (Type F).

2 The other designs of cables to be considered later.

4c’A

(4)

0.6 + 0.01 - 0.0

3.7 * 0.20

0.050 3%

5(‘A 7C’A

(5) (6)

0.8 I.1

4.80 f 0.20 7.20 zt 0.20

0.050 3%

0.075 3%

IS 14131 ( Part 2 ) : 1995

Table 2 clonstructional Details of C:oaxial Cables with Cellular Polyethylene Dielectric

( Clause 6.2 )

All dimensions in millimetres.

SI Item Detnils No.

Size DeGgnation

(1) (2) (3)

9 Inner conductor Solid annealed plain copper conductor of copper coated steel wire (diameter)

ii) Dielectric Cellular foam polyethylene (diameter)

iii) Outer conductor a) I-I aminated longitudinal aluminium composite tape

Thickness, Min Overlap, Min

b) II- Braid of tinned copper wire

Coverage, Min Diameter, Min

iv) Migration Polyethylene terephthalate/ barrier polyester transparent tape

minimum overlap

v) Jacket a) PVC type TM2 (as per IS 13176 : 1991) sheath thickness, Min

b) Maximum outer diameter over jacket

c) Clolour

4c:A4

(4)

0.8

-

WA4 7(‘A4 1 ()<‘A4

(5) (6)

1.1 1.63

3.70 * 0.20 4.80 f 0.20 7.24 i 0.25

0.050 3%

0.050 0.075 3% 3%

80% 0.12

20%

0.6

.

6.3

80% 80% 0.15 0.15

20% 20%

0.8 0.9

7.3 1 I .o

Black - c

(7)

2.2

9.80 * 0.25

0.075 3%

80% 0.15

20%

1 .o

14.0

IS 14131 ( Part t ) : 1995

‘l’ahles 3 Requirements of (Joaxial Cables with Solid Polyethylene Dieletric

( C/a1W? 7.1 )

SI No.

(‘1

i)

ii)

iii)

‘I-L!! ts Sire Designation

iv)

v)

vi)

vii)

viii)

ix)

x)

Xi)

xii)

xiii)

xiv)

xv)

Clause Ref of IS 5026:

1987

4C’tI 5( ‘A 7C.A I IC’A

(3) (4) (5) (6)

5 000 7W.l 10 000 12 WO

5 000 50(N) 5 000 5 000

(7)

6.7

6.6

2 O(K) 2unl 2 (Jo0 2 000 6.8

75 * 2 75 *2 15 i 2 75+2 6.10

67.3 67.3 67.3 67.3

66% 66% 66% 66%

6.13

A-3 of Appendix A

20 16 10 8 40 32 20 16

1

64 36 18.5 8.7

6.11

-

I (iliz I GHz 1 GHz 1 GHz

-5 to 7o”c -5 to 70°C’

115 nini 150 mm

60 120 -

. IJnder consideration c -

. [lnder consideration --

4 Under conxiJer;ltion c

4

IS 14131 ( Part 2 ) : 1995

Table 4 Requirements of Coaxial Cables with Cellular Dielectric

( Clause 7.2 )

SI No.

Tests Size Designation

(1) (2)

i) Dielectric strength V,,,

ii) Spark test on jacket V,,,

iii) Insulation resistance M ohm/km, Min

ENGINEERING INFORMATION

4CA4 WA4 7CA4 llCA4

(3) (4) (5) (6)

800 1600 2000 2 500

5000 5000 5 000 5 000

10 000 10 OW 10 o(K) to000

iv)

v)

Vi1

Mean characteristicimpedanceat 200 MHz (ohms)

Capacitance pF/m (Nom)

Velocity of propagation (Nom)

vii) Attenuation (db/lOOm, MUX)

at 200 MHz at 800 MHz

viii) Return loss db, Min 30 - 300 MHz

300 - 460 MHz 460 - 5X5 MHz 585 - 960 MHz

ix)

x)

xi)

xii)

xiii)

xiv)

xv)

IX’ resistance at 2fPC inner

conductor, MUX (ohms/km)

Operating frequency, MUX

Operating temperature

Hcnding radius, Mitt

M;tximum pull ntrengtn

‘li:lnt~mturc cc,eHicic:nt ol nttenuatirln

1)1p t;tblc cm/span of ditl’erent length

75 * 3 75 *3 75 * 2.5 75 * 2.5 6.10

53

82%

16 32

18 18 23 NA NA 20 NA NA 19 NA NA 18

36 1x.5 8.7

800 MHz

60 mm

53

82%

800 MHx 800 MHz

-5 ttr 7oY -5 to 7fW

75 mm 115 111111

53 53

82% 82%

8 16

6 I2

1

23 20 19 18

1

4.76

800 MI Iz

- ~____ Under consideraticm --

t__---- Ifrider considentton ~

Clause Hef oflS 5026:

1987

(7)

6.7

6.h

6.8

6.13

A-3 of Appendix A

6.11

6.12

.-- ____--s_~^_llj_l_,-.._,

1

Bureau of Indian Standards

BIS is a statutory institution established under the Bureau of Indian Standards Ad, 1986 to promote harmonious development of the activities of standatdzation. marking and quality certification of goods and attending to connected matters in the country.

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Rev&w of Indian Standards

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This Indian Standard has been developed from Dot No: LTD l$ (1758).

Amendments Issued Since Publication

_

Amend No. Date of Issue Text Affected

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