EP1411531A2 - Multi-pair cable for analogue, digital, xDSL and broadband systems - Google Patents
Multi-pair cable for analogue, digital, xDSL and broadband systems Download PDFInfo
- Publication number
- EP1411531A2 EP1411531A2 EP03380222A EP03380222A EP1411531A2 EP 1411531 A2 EP1411531 A2 EP 1411531A2 EP 03380222 A EP03380222 A EP 03380222A EP 03380222 A EP03380222 A EP 03380222A EP 1411531 A2 EP1411531 A2 EP 1411531A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- pairs
- cable
- xdsl
- analogue
- digital
- Prior art date
- 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.)
- Withdrawn
Links
- 229920003023 plastic Polymers 0.000 claims abstract description 6
- 239000004033 plastic Substances 0.000 claims abstract description 6
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 5
- 150000002367 halogens Chemical class 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 5
- 210000004940 nucleus Anatomy 0.000 claims description 10
- 239000011295 pitch Substances 0.000 claims description 5
- -1 aluminium-polyethylene Chemical group 0.000 claims description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000003063 flame retardant Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 abstract description 3
- 238000005859 coupling reaction Methods 0.000 abstract description 3
- 230000002457 bidirectional effect Effects 0.000 abstract description 2
- 239000011810 insulating material Substances 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- KAATUXNTWXVJKI-UHFFFAOYSA-N cypermethrin Chemical compound CC1(C)C(C=C(Cl)Cl)C1C(=O)OC(C#N)C1=CC=CC(OC=2C=CC=CC=2)=C1 KAATUXNTWXVJKI-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
Definitions
- the present invention refers to shielded multi-pair cables improved for the transmission of analogue and digital systems in general, xDSL and broadband systems, to be used both in the distribution and radio networks in the internal cabling of buildings and in the supply, distribution and outside plant access networks.
- These cables are made up of pure annealed copper conductors insulated by a layer of plastic dielectric material, paired up and twisted with short pitches of varying torsion in each pair within each basic unit of 25 pairs, identified by means of a colour code for each pair.
- It comprises a system of cable components with 3 or 4 pairs of cables to optimise the near-end crosstalk or the power sum of all the other generative interfering pairs with respect to the disturbed receiver pair, both in near-end crosstalk at the near end (Power Sum NEXT) and in the far-end crosstalk relationship at the far end (Power Sum ELFEXT), obtaining a correction of the imbalances of high frequency coupling signals, making it ideal for the transmission of bidirectional digital signals and in particular xDSL or broadband systems, enabling the interoperability of either new or existing systems in the cable and the maximum occupation of the systems utilised by the cable as well as at the same time optimising the length of the loop due to low losses of longitudinal attenuation and its low near-end crosstalk.
- the invention also takes into consideration that the common cable nucleus with pairs formed in this way has a metalized shield and drain conductor for the connection from the screen to ground with a flame-retardant pvc cover or material with low halogen content for cables in the interior of buildings and a watertight aluminium-polyethylene cover for cables to be installed outside.
- Multi-pair cables commonly available in the market have the disadvantage of not being able to correct the imbalances at high frequency because of the electromagnetic coupling of the pairs, the excessive length of pitches and the employment of a deficient cabling system.
- the improved multi-pair cables object of the present invention consist of units of 25 pairs and within each basic unit of 25 pairs, twisted pairs with short pitches of torsion, different to one another.
- the nucleus of the cable comprises units of 25 pairs which are formed by cable components of 3 or 4 pairs with short pitches of torsion and wired up separately in relation to the cabling of the pairs.
- subunits are formed with the cable components of 3 and 4 pairs, or 25 pair units for cables with a greater number of pairs.
- the cables formed range from 4 to 100 pairs for interior cables and from 16 to 600 pairs for exterior cables.
- a protective tape is placed over the nucleus, with a copper drain wire and a metalized tape on top, finally covered with a flame-retardant pvc cover or a material low in halogen content.
- a plastic tape is protected with a plastic tape and covered with a watertight aluminium-polyethylene cover.
- the multi-pair cable for the interior of buildings consists of a combination of pairs (1) in colour code wired up in cable units of 3 or 4 pairs (2) protected by covering them with a plastic tape helicoidally (3), upon which a drain wire (4) is placed with a metalized tape attached helicoidally or longitudinally on one side and an insulating cover (5) on the other, and on top of which a ripcord (6) is positioned and then, finally, a pvc cover or material of low halogen content (7).
- the exterior cable is shown in the figure 3 specification of the 25 pair cable and in the figure 4 specification of the 600 pair cable, sufficing for the description of these the details disclosed for the interior cable, items (1), (2) and (3) of figures 1 and 2 previously described.
- the basic unit of 25 pairs is employed as shown in figure 3, and for cables of more than 25 pairs, as shown in figure 4, with basic 25 pair cable units put together in colour code as shown in (1'-2') of figures 3 and 4.
- the covering and protection of the cable nucleus is carried out in the same way for external cables, by placing a plastic tape (3') in figures 3 and 4, positioning a ripcord (4') and finally a watertight aluminium-polyethylene cover (5'). Cables with fewer than 25 pairs are assembled by combining cable units of 3 and 4 pairs as a result of which any range of different cable types is achieved for interior and exterior installations.
Landscapes
- Insulated Conductors (AREA)
Abstract
It comprises a combination of colour-coded pairs (1), cabled in
units (2) of three or four pairs, said combination of pairs being covered
with a plastic protection tape (3), wound helicoidally, on which is a drain
wire (4) and on the outside of this is a tape (5), metalized on one side and
covered with insulating material on the other, on top of which is a cord (6)
for tearing the final cover (7) sealing the whole array and which is made of
PVC or other material with low halogen content. In this way, signal-coupling
imbalances at high-frequency can be offset, making said cable
suitable for transmitting bidirectional digital signals and in particular xDSL
or broadband systems, enabling interoperability of new and existing
systems in the cable and making maximum use of the systems it uses, at the
same time optimizing the loop length by its low level of longitudinal
attenuation loss and low level cross-talk noise.
Description
The present invention refers to shielded multi-pair cables
improved for the transmission of analogue and digital systems in general,
xDSL and broadband systems, to be used both in the distribution and radio
networks in the internal cabling of buildings and in the supply, distribution
and outside plant access networks. These cables are made up of pure
annealed copper conductors insulated by a layer of plastic dielectric
material, paired up and twisted with short pitches of varying torsion in
each pair within each basic unit of 25 pairs, identified by means of a
colour code for each pair. It comprises a system of cable components with
3 or 4 pairs of cables to optimise the near-end crosstalk or the power sum
of all the other generative interfering pairs with respect to the disturbed
receiver pair, both in near-end crosstalk at the near end (Power Sum
NEXT) and in the far-end crosstalk relationship at the far end (Power Sum
ELFEXT), obtaining a correction of the imbalances of high frequency
coupling signals, making it ideal for the transmission of bidirectional
digital signals and in particular xDSL or broadband systems, enabling the
interoperability of either new or existing systems in the cable and the
maximum occupation of the systems utilised by the cable as well as at the
same time optimising the length of the loop due to low losses of
longitudinal attenuation and its low near-end crosstalk.
The invention also takes into consideration that the common
cable nucleus with pairs formed in this way has a metalized shield and
drain conductor for the connection from the screen to ground with a flame-retardant
pvc cover or material with low halogen content for cables in the
interior of buildings and a watertight aluminium-polyethylene cover for
cables to be installed outside.
Multi-pair cables commonly available in the market have the
disadvantage of not being able to correct the imbalances at high frequency
because of the electromagnetic coupling of the pairs, the excessive length
of pitches and the employment of a deficient cabling system.
The improved multi-pair cables object of the present invention
consist of units of 25 pairs and within each basic unit of 25 pairs, twisted
pairs with short pitches of torsion, different to one another. The nucleus of
the cable comprises units of 25 pairs which are formed by cable
components of 3 or 4 pairs with short pitches of torsion and wired up
separately in relation to the cabling of the pairs. In order to create
nucleuses of fewer than 25 pairs, subunits are formed with the cable
components of 3 and 4 pairs, or 25 pair units for cables with a greater
number of pairs. The cables formed range from 4 to 100 pairs for interior
cables and from 16 to 600 pairs for exterior cables. For interior cables a
protective tape is placed over the nucleus, with a copper drain wire and a
metalized tape on top, finally covered with a flame-retardant pvc cover or
a material low in halogen content. For exterior cables the nucleus is
protected with a plastic tape and covered with a watertight aluminium-polyethylene
cover.
To complement this description and in order to provide a
better understanding of the characteristics of the invention, in line with a
practical embodiment of the same, a set of drawings accompanies the
description wherein, with illustrative rather than limiting characteristics,
the following is shown:
For the interior cable and looking at figures 1 and 2 one can
see that the multi-pair cable for the interior of buildings consists of a
combination of pairs (1) in colour code wired up in cable units of 3 or 4
pairs (2) protected by covering them with a plastic tape helicoidally (3),
upon which a drain wire (4) is placed with a metalized tape attached
helicoidally or longitudinally on one side and an insulating cover (5) on the
other, and on top of which a ripcord (6) is positioned and then, finally, a
pvc cover or material of low halogen content (7).
The exterior cable is shown in the figure 3 specification of the
25 pair cable and in the figure 4 specification of the 600 pair cable,
sufficing for the description of these the details disclosed for the interior
cable, items (1), (2) and (3) of figures 1 and 2 previously described. With
regards to the construction of the nucleus for the 25 pair cable, the basic
unit of 25 pairs is employed as shown in figure 3, and for cables of more
than 25 pairs, as shown in figure 4, with basic 25 pair cable units put
together in colour code as shown in (1'-2') of figures 3 and 4. The
covering and protection of the cable nucleus is carried out in the same way
for external cables, by placing a plastic tape (3') in figures 3 and 4,
positioning a ripcord (4') and finally a watertight aluminium-polyethylene
cover (5'). Cables with fewer than 25 pairs are assembled by combining
cable units of 3 and 4 pairs as a result of which any range of different
cable types is achieved for interior and exterior installations.
Claims (4)
- Multi-pair cable for analogue, digital, xDSL and broadband systems characterised in that it consists of units of 25 pairs, which are formed by cable components of 3 and 4 pairs, with short torsion pitches, different to one another and wired up separately with regard to the cabling of the pairs.
- Multi-pair cable for analogue, digital, xDSL and broadband systems as claimed in claim 1, characterised in that in order to form nucleuses with fewer than 25 pairs, subunits are formed with the cable components of 3 and 4 pairs, while for a greater number of pairs, units of 25 pairs are employed.
- Multi-pair cable for analogue, digital, xDSL and broadband systems as claimed in the preceding claims, characterised in that when designed for an internal installation, it comprises between 4 and 100 pairs, upon which a protective tape for the nucleus is positioned, with a copper drain wire and a metalized tape on top, finally covered with a flame-retardant PVC cover or material of low halogen content.
- Multi-pair cable for analogue, digital, xDSL and broadband systems as claimed in the claims 1 and 2, characterised in that when designed for an external installation, the nucleus is protected with a plastic tape and covered with a watertight aluminium-polyethylene cover.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200202483 | 2002-10-16 | ||
| ES200202483 | 2002-10-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1411531A2 true EP1411531A2 (en) | 2004-04-21 |
| EP1411531A3 EP1411531A3 (en) | 2004-11-10 |
Family
ID=32039297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03380222A Withdrawn EP1411531A3 (en) | 2002-10-16 | 2003-10-07 | Multi-pair cable for analogue, digital, xDSL and broadband systems |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1411531A3 (en) |
| BR (1) | BR8302248U (en) |
| MA (1) | MA26108A1 (en) |
| PE (1) | PE20040880Z (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5689090A (en) * | 1995-10-13 | 1997-11-18 | Lucent Technologies Inc. | Fire resistant non-halogen riser cable |
| US6566606B1 (en) * | 1999-08-31 | 2003-05-20 | Krone, Inc. | Shared sheath digital transport termination cable |
| AU5191801A (en) * | 2001-06-14 | 2002-12-19 | Pirelli Cables Australia Limited | Communications cable provided with a crosstalk barrier for use at high transmission frequencies |
| US20030106704A1 (en) * | 2001-12-06 | 2003-06-12 | Isley James A. | Electrical cable apparatus |
-
2003
- 2003-10-07 EP EP03380222A patent/EP1411531A3/en not_active Withdrawn
- 2003-10-10 PE PE2003001032U patent/PE20040880Z/en not_active IP Right Cessation
- 2003-10-14 MA MA27359A patent/MA26108A1/en unknown
- 2003-10-15 BR BR8302248-1U patent/BR8302248U/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| MA26108A1 (en) | 2004-04-01 |
| BR8302248U (en) | 2004-09-14 |
| EP1411531A3 (en) | 2004-11-10 |
| PE20040880Z (en) | 2005-02-23 |
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| 17P | Request for examination filed |
Effective date: 20050422 |
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| AKX | Designation fees paid |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 18W | Application withdrawn |
Effective date: 20060921 |