CN201274196Y - Indoor shielding symmetrical cable - Google Patents
Indoor shielding symmetrical cable Download PDFInfo
- Publication number
- CN201274196Y CN201274196Y CNU2008201375669U CN200820137566U CN201274196Y CN 201274196 Y CN201274196 Y CN 201274196Y CN U2008201375669 U CNU2008201375669 U CN U2008201375669U CN 200820137566 U CN200820137566 U CN 200820137566U CN 201274196 Y CN201274196 Y CN 201274196Y
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- Prior art keywords
- millimeters
- line
- cable
- pitch
- outdoor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 239000005030 aluminium foil Substances 0.000 claims description 4
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 claims description 3
- 239000010949 copper Substances 0.000 abstract description 3
- 229910052802 copper Inorganic materials 0.000 abstract description 3
- 238000012856 packing Methods 0.000 abstract 2
- 230000004913 activation Effects 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- 239000011888 foil Substances 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- 241000675108 Citrus tangerina Species 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 241000233855 Orchidaceae Species 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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Abstract
The utility model relates to an outdoor shielding symmetrical cable which comprises a protective cover layer, a cooper wire layer, an aluminum foil layer, a packing belt layer and a cable core arranged in the packing belt layer, which are arranged from the inside to the outside in turn; the cable core consists of a circle core unit in the middle of the cable core and six circumferential core units symmetrically distributed on the outer side of the circle core unit; the circle core unit and the circumferential core units comprise a plurality of wire pairs which are twisted together. The outdoor shielding symmetrical cable is designed according to the structures of outdoor cables, so that the pitch of a plurality of wire pairs is different; compared with the prior art, the activation frequency of the outdoor shielding symmetrical cable is 100MHz, and the conversation capability is 150 times of that of four pairs of cables; the outdoor shielding symmetrical cable can replace cables above HYA200*2*0.40, thereby saving the copper resources. The maximum near-end crosstalk attenuation of the outdoor shielding symmetrical cable between 1MHz and 100MHz is 62.3dB/100m, and the maximum far-end crosstalk attenuation is 61.0dB/100m; the crosstalk interference is quite small, so the outdoor shielding symmetrical cable improves the communication quality and is in particular applicable to outdoor communication.
Description
Technical field
The utility model relates to a kind of outdoor shielding symmetrical cable.
Background technology
Along with the arrival of information age, the conveying capacity of information becomes explosive growth, and as the effective means of big capacity, long Distance Transmission, cable and optical cable have obtained a large amount of application.Traditional outdoor telecommunication cable mainly is made of cable core and oversheath, and cable core comprises that the stranded line of a plurality of two two-phases is right.
In the prior art, the right pitch of these a plurality of lines is normally identical.The frequency spectrum of this telecommunication cable is generally narrower, and message capacity is limited, and can produce the cross-talk phenomenon.Cross-talk is meant signal by a cable element to the influence of signal in another cable element, cross-talk be meant betide the line that is wrapped in a Shu Qunzhong to interference, it is the main source of noise in the cable.
Summary of the invention
In order to overcome the deficiencies in the prior art, the purpose of this utility model provides the outdoor shielding symmetrical cable that a kind of cross-talk is little and message capacity is big.
For solving above technical problem, the technical scheme that the utility model is taked is: a kind of outdoor shielding symmetrical cable, it is by comprising restrictive coating successively in outer the reaching, the copper wire layer, aluminium foil layer, belting layer, be arranged on the cable core in the described belting layer, described cable core is made up of the center of circle subelement that is positioned at the cable core center and six circumference subelements that are distributed in the subelement outside, the described center of circle symmetrically, it is right that described center of circle subelement and circumference subelement include the first mutually stranded line, second line is right, is three-way right, the 4th line is right, the 5th line is right, the 6th line is right, the 7th line is right, described center subelement comprises that also the 8th line is right, described each line is to comprising a pair of mutually stranded lead, the right pitch of described first line is 22.48 millimeters～22.88 millimeters, the right pitch of described second line is 12.72 millimeters～13.12 millimeters, described three-way right pitch is 19.36 millimeters～19.76 millimeters, the right pitch of described the 4th line is 14.92 millimeters～15.32 millimeters, the right pitch of described the 5th line is 10.98 millimeters～11.38 millimeters, the right pitch of described the 6th line is 17.38 millimeters～17.78 millimeters, the right pitch of described the 7th line is 14.34 millimeters～14.74 millimeters, and the right pitch of described the 8th line is 20.42 millimeters～20.82 millimeters.The right pitch of line in the technical scheme is meant the single cord in the two mutually stranded strands stranded when circle distance in the cable length direction.
In a kind of technical scheme of optimization, the group of three subelements in described six circumference subelements strand lay is 145 millimeters～155 millimeters, and the group strand lay of its excess-three sub-unit is 175 millimeters～185 millimeters.The group strand lay of described center of circle subelement is 115 millimeters～125 millimeters.
In the technical scheme that another kind is optimized, described restrictive coating is a pe sheath.Described copper wire layer is a tinned copper wire.Described belting layer is the PETG band.
Because the enforcement of above technical scheme, the utility model compared with prior art has following advantage:
Though because outdoor shielding symmetrical cable relatively structure be symmetrical cable, its space magnetic field distributes both inhomogeneous also asymmetric, so will offset interference between them by rational pitch design.Structure at outside cable in the utility model needs design, and right pitch has nothing in common with each other to make a plurality of lines, compared with prior art, can open frequency is 100MHz, the conversation capacity is 150 times of 4 pairs of cables, can replace the above cable in HYA200 * 2 * 0.40, has saved the copper resource.The maximum of its near-end crosstalk attenuation between 1～100MHz is 62.3dB/100m, and the maximum of far-end crosstalk attentuation is 61.0dB/100m, and cross-talk is less, has improved communication quality, is particularly useful for outdoor communication and uses.
Description of drawings
Accompanying drawing 1 is a cross section view of the present utility model;
Accompanying drawing 2 is that stranded line in the utility model is to schematic diagram;
Wherein:
1, restrictive coating; 2, copper wire layer; 3, aluminium foil layer; 4, belting layer; 5, cable core; 6, center of circle subelement; 68, the 8th line is right; 7, circumference subelement; 71, first line is right; 72, second line is right; 73, is three-way right; 74, the 4th line is right; 75, the 5th line is right; 76, the 6th line is right; 77, the 7th line is right.
Embodiment
Below in conjunction with accompanying drawing the utility model preferred embodiment is elaborated:
A kind of outdoor shielding symmetrical cable as shown in Figures 1 and 2, it is by comprising restrictive coating 1, copper wire layer 2, aluminium foil layer 3, belting layer 4 successively in outer the reaching, being arranged on the cable core 5 in the described belting layer 4.Described restrictive coating 1 is a pe sheath.Described copper wire layer 2 is a tinned copper wire.Described belting layer 4 is the PETG band.
Described cable core 5 is made up of the center of circle subelement 6 that is positioned at the cable core center and six circumference subelements 7 that are distributed in subelement 6 outsides, the described center of circle symmetrically, described center of circle subelement 6 and circumference subelement 7 include the first mutually stranded line to 71, second line to 72, three-way to the 73, the 4th line to the 74, the 5th line to the 75, the 6th line to the 76, the 7th line to 77, described center subelement 6 comprises that also the 8th line is to 68.Above-mentioned a plurality of line is to 71,72, and 73,74,75,76,77,68 are distribution symmetrically.
In the present embodiment, described each line is to 71,72, and 73,74,75,76,77,68 comprise a pair of mutually stranded lead 8, and described first line is mutually stranded white orchid lead and blue lead to 71, and the pitch of white orchid and blue lead is got 22.68 millimeters between 22.48 millimeters～22.88 millimeters.Described second line is mutually stranded white tangerine and tangerine lead to 72, and the pitch of white tangerine and tangerine lead is got 12.92 millimeters between 12.72 millimeters～13.12 millimeters.Described three-way pitch to 73 is mutually stranded white green and green lead, and the pitch of white green and green lead is got 19.56 millimeters between 19.36 millimeters～19.76 millimeters.Described the 4th line is mutually stranded white palm fibre and brown lead to 74, and the pitch of white palm fibre and brown lead is got 15.12 millimeters between 14.92 millimeters～15.32 millimeters.Described the 5th line is mutually stranded lime and grey lead to 75, and the pitch of lime and grey lead is got 11.18 millimeters between 10.98 millimeters～11.38 millimeters.Described the 6th line is mutually stranded red lead and blue lead to 76, and the pitch of red lead and blue lead is got 17.58 millimeters between 17.38 millimeters～17.78 millimeters.Described the 7th line is mutually stranded red lead and unlicensed tour guide's line to 77, and the pitch of red lead and unlicensed tour guide's line is got 14.54 millimeters between 14.34 millimeters～14.74 millimeters.Described the 8th line is mutually stranded red lead and green lead to 68, and the pitch of red lead and green lead is got 20.62 millimeters between 20.42 millimeters～20.82 millimeters.The right pitch of line in the technical scheme is meant the single cord in the two mutually stranded strands stranded when circle distance in the cable length direction.
The group strand lay of three subelements in described six circumference subelements 7 is got 155 millimeters between 145 millimeters～155 millimeters.The group strand lay of its excess-three sub-unit is got 180 millimeters between 175 millimeters～185 millimeters.
The group strand lay of described center of circle subelement 6 is got 120 millimeters between 115 millimeters～125 millimeters.
Though because outdoor shielding symmetrical cable relatively structure be symmetrical cable, its space magnetic field distributes both inhomogeneous also asymmetric, so will offset interference between them by rational pitch design.Structure at outside cable in the utility model needs design, and right pitch has nothing in common with each other to make a plurality of lines, compared with prior art, can open frequency is 100MHz, the conversation capacity is 150 times of 4 pairs of cables, can replace the above cable in HYA200 * 2 * 0.40, has saved the copper resource.The maximum of its near-end crosstalk attenuation between 1～100MHz is 62.3dB/100m, and the maximum of far-end crosstalk attentuation is 61.0dB/100m, and cross-talk is less, has improved communication quality, is particularly useful for outdoor communication and uses.
The foregoing description only is explanation technical conceive of the present utility model and characteristics; its purpose is to allow the personage that is familiar with this art can understand content of the present utility model and is implemented; can not limit protection range of the present utility model with this; all equivalences of being done according to the utility model spirit change or modify, and all should be encompassed in the protection range of the present utility model.
Claims (6)
1, a kind of outdoor shielding symmetrical cable, it is by comprising restrictive coating (1) successively in outer the reaching, copper wire layer (2), aluminium foil layer (3), belting layer (4), be arranged on the cable core (5) in the described belting layer (4), it is characterized in that: described cable core (5) is made up of center of circle subelement (6) that is positioned at the cable core center and six the circumference subelements (7) that are distributed in described center of circle subelement (6) outside symmetrically, described center of circle subelement (6) includes the first mutually stranded line to (71) with circumference subelement (7), second line is to (72), is three-way to (73), the 4th line is to (74), the 5th line is to (75), the 6th line is to (76), the 7th line is to (77), described center subelement (6) comprises that also the 8th line is to (68), described each line is to (71,72,73,74,75,76,77,68) comprise a pair of mutually stranded lead (8), described first line is 22.48 millimeters～22.88 millimeters to the pitch of (71), described second line is 12.72 millimeters～13.12 millimeters to the pitch of (72), described three-way pitch to (73) is 19.36 millimeters～19.76 millimeters, described the 4th line is 14.92 millimeters～15.32 millimeters to the pitch of (74), described the 5th line is 10.98 millimeters～11.38 millimeters to the pitch of (75), described the 6th line is 17.38 millimeters～17.78 millimeters to the pitch of (76), described the 7th line is 14.34 millimeters～14.74 millimeters to the pitch of (77), and described the 8th line is 20.42 millimeters～20.82 millimeters to the pitch of (68).
2, outdoor shielding symmetrical cable according to claim 1, it is characterized in that: the group strand lay of three subelements in described six circumference subelements (7) is 145 millimeters～155 millimeters, and the group strand lay of its excess-three sub-unit is 175 millimeters～185 millimeters.-
3, outdoor shielding symmetrical cable according to claim 2 is characterized in that: the group strand lay of described center of circle subelement (6) is 115 millimeters～125 millimeters.
4, outdoor shielding symmetrical cable according to claim 1 is characterized in that: described restrictive coating (1) is a pe sheath.
5, outdoor shielding symmetrical cable according to claim 1 is characterized in that: described copper wire layer (2) is a tinned copper wire.
6, outdoor shielding symmetrical cable according to claim 1 is characterized in that: described belting layer (4) is the PETG band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201375669U CN201274196Y (en) | 2008-09-05 | 2008-09-05 | Indoor shielding symmetrical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201375669U CN201274196Y (en) | 2008-09-05 | 2008-09-05 | Indoor shielding symmetrical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201274196Y true CN201274196Y (en) | 2009-07-15 |
Family
ID=40884539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201375669U Expired - Fee Related CN201274196Y (en) | 2008-09-05 | 2008-09-05 | Indoor shielding symmetrical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201274196Y (en) |
-
2008
- 2008-09-05 CN CNU2008201375669U patent/CN201274196Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090715 Termination date: 20110905 |