Cables :
  1.2/4.4mm Coaxial composite communication cable


Applicable range
  • This product refers to 1.2/4.4mm coaxial communication cable.
  • Coaxial pair is used for analog main line communication system of 22Mhz and below or digital communication system of 34Mbit/s and below
  • High frequency quad and high frequency pair are used for analog communication system of 156KHz and below
  • Low frequency quad low frequency and low frequency pair used for communication system of audio frequency

Standard of products :

GB 4011-83 (this standard is equivalent to the suggestion value of Consultative Committee, International Telegraph and Telephone CCITTG611 and G622)

Type, name, specifications and applicable site of products

Type Name Applicable site
HOL02

HOL03

Aluminum sheathed polyvinyl chloride sheathed coaxial composite communication cable

Aluminum sheathed polyvinyl sheathed coaxial composite communication cable

Fixed laying on the land, overhead, channel, tonnel and direct burial
HOL22

HOL23

Aluminum sheathed, steel tape armored polyvinyl chloride sheathed, coaxial composite communication cable

Aluminum sheathed, steel tape armored polyvinyl  sheathed, coaxial composite communication cable

Direct laying, electrified railway and the site of strong electric interference
HOL32 Aluminum sheathed, steel wire armored polyvinyl chloride sheathed, coaxial composite communication cable Fixed laying on the land, under water
HOQ Bare lead sheathed, coaxial composite communication cable Fixed laying on the land, overhead, channel, tunnel and direct burial
HOQ02

HOQ03

Lead sheathed, polyvinyl chloride sheathed, coaxial composite communication cable

Lead sheathed, polyethylene sheathed, coaxial composite communication cable

Fixed laying on the land, overhead, channel tunnel and direct burial
HOQ22

HOQ23

Lead sheathed, steel tape armored, polyvinyl chloride sheathed, coaxial composite communication cable

Lead sheathed, steel tape armored, polyvinyl chloride sheathed, coaxial composite communication cable

Direct burial for electric railway and strong electric interference site

Type Name Applicable site
HOQ33 Lead sheathed, fine steel wire armored polyethylene sheathed, coaxial composite communication cable Fixed laying on the land
HOQ41 Lead sheathed, thick steel wire armored, fiber covered, coaxial composite communication cable Under water
HOQ43 Lead sheathed, thick steel wire armored, polyethylene sheathed, composite communication cable


specifications
1 4 x 1.2/4.4 + 3 x 4 x 0.9(high frequency) + 6 x 1 x 0.6 (signal)
2 6 x 1.2/4.4 + 4 x 2 x 0.7(high frequency) + 1 x 4 x 0.9(low frequency) + 4 x 1 x 0.6 (signal)
3 8 x 1.2/4.4 + 1 x 4 x 0.9(hign frequency) + 1 x 4 x 0.9(low frequency) + 2 x 4 x 0.6(signal) + 8 x 2 x 0.6(signal)
4 4 x 1.2/4.4 + 4 x 4 x 0.9(hign frequency) + 9 x 4 x 0.9(low frequency) + 4 x 4 x 0.6(signal) + 5 x 1 x 0.9(signal)
5 4 x 1.2/4.4 + 4 x 4 x 0.9(hign frequency) + 9 x 4 x 0.9(low frequency) + 4 x 4 x 0.6(signal) + 5 x 2 x 0.6(signal)
6 4 x 1.2/4.4 + 4 x 4 x 0.9(hign frequency) + 13 x 4 x 0.9(low frequency) + 10 x 2 x 0.6(signal)

Electrical properties. see table 2, table 3
  • Coaxial pair properties
  • High frequency quad, high frequency pair
  • Low frequency quad, low frequency pair
  • Signal pair, signal line
NO Item Index conversion formula
1 Inner conductor D.C resistance / at 20 16.0 L/1000
2 Characteristic impedance actual point
Nominal value 1MHz 7.5
Deviation 1MHz 0.75
3 End Impedance
Nominal value
Deviation


75
For 0.06MHz transmission system 0.75
For 0.3~22MHz transmission system or 34Mbit/s transmission system 0.50
A,B end impedance difference
For 0.06Mhz ~ 6MHz transmission system not more than
0.70
For 0.3MHz~22MHz transmission system
or 34Mbit/s transmission system not more than
0.50
4 Non-Homogeneity of impedance
For 0.06~6MHz transmission system
Not more than 4.0
not more than 2.5
for 0.3~22MHz transmission system
or 34 Mbit/s
100% not more than 3.0
95% not more than 2.0
3 average value of max.non-uniform
For transmission system of 0.06-6MHz 3.5
For transmission system 0.3-22MHz 2.8

NO Item Index Conversion formula
Attenuation  constant 20 Frequency Nominal value dB/km Deviation dB/km Temperature factor x 10-3
0.6
0.1
0.3
0.5
1.0
1.3
4.5
12
18
22
1.54
1.84
2.96
3.77
5.41
6.12
11.22
18.36
22.44
24.80
0.1
0.1
0.1
0.1
0.1
0.2
0.2
0.2
0.2
0.2
2.52
2.35
2.10
2.00
2.00
2.00
2.00
2.00
2.00
2.00

NO Item Index Conversion formula
1 D.C resistance at 20
each conductive core /km not more than
D.C resistance difference of working pair not
more than loop resistance %

28.5
1.0
L/1000
2 Working capacitance nF/km 0.8-1KHz
Nominal value
type I
Type II
Deviation
type I
Type II


24.4
23.0

1.6
1.5
L/1000
3 Attenuation constant dB/km 20
Nominal value
type I not more than
Type II not more than
Deviation
type I
Type II


2.65
2.60

0.20
0.20

    

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