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HUAWEI NIP6800 Series V500 Hardware Guide

This document of the NIP6800 Series describes hardware structure, installation guide, and hardware maintenance. The content of this document includes the appearance and specifications of the product, the supported expansion cards, preparation before the installation, installation, cabling, and hardware replacement.
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Assembling Ethernet Cables

Assembling Ethernet Cables

This section describes how to assemble RJ45 connectors and Ethernet cables.

Assembling the Shielded RJ45 Connector and the Ethernet Cable

This section describes how to assemble a shielded RJ45 connector and a straight-through Ethernet cable.

Context

Figure 4-15 shows the components of an RJ45 connector and a shielded Ethernet cable.

Figure 4-15  Shielded RJ45 connector

A. Connector jacket

B. Metal shell of connector

C. Connector wire holder

D. Connector plug

E. Ethernet cable jacket

F. Shield layer of Ethernet cable

G. Twisted-pair cable

-

Procedure

  1. Fit the connector jacket onto the Ethernet cable, as shown in Figure 4-16.

    Figure 4-16  Fitting the jacket of the connector onto the Ethernet cable

  2. Remove a 30-mm long section of the jacket, cut off the nylon twine inside the jacket, and cut a 5-mm cleft in the cable jacket, as shown Figure 4-17.

    • When removing a section of the jacket, be careful not to damage the shield layer of the twisted-pair cable.
    • When removing the shielding layer, be careful not to damage the insulation layer of the twisted-pair cable.
    Figure 4-17  Removing the jacket of a twisted-pair cable (unit: mm)

  3. Fit the metal shell onto the twisted-pair cable. The shield layer is covered by the metal shell, as shown in Figure 4-18.

    Figure 4-18  Fitting the metal shell onto the twisted-pair cable

  4. Fit the metal shell onto the twisted-pair cable until the shield layer is covered completely. Along the edge of the metal shell, cut off the shield layer with aluminum foil and ensure that there is no extra copper wire protruding. Ensure that the exposed twisted-pair cable is about 20 mm long, as shown in Figure 4-19.

    Figure 4-19  Removing the shield layer of a twisted-pair cable (unit: mm)

  5. According to colors, lead the four pairs of twisted-pair cables through the wire holder, as shown in Figure 4-20 and Figure 4-21.

    Figure 4-20  Leading cables through the wire holder

    Figure 4-21  Cable locations in a wire holder

  6. Align the four pairs of cables on the holder, as shown in Figure 4-22. The connections between the core wires and the pins are shown in Figure 4-23 and listed in Table 4-5.

    Figure 4-22  Aligning four pairs of cables on a wire holder

    Figure 4-23  Connections between core wires and pins

    Table 4-5  Connections between core wires and pins

    Matching Wire Pins

    Core Wire Color

    1

    White-Orange

    2

    Orange

    3

    White-Green

    4

    Blue

    5

    White-Blue

    6

    Green

    7

    White-Brown

    8

    Brown

  7. Cut off the extra lengths of cable along the lower edge of the wire holder, as shown in Figure 4-24.

    Figure 4-24  Cutting off extra cable

  8. Attack the connector body to the wire holder and turn the metal shell 90°, as shown in Figure 4-25.

    NOTE:

    Ensure that the wire holder is in sufficient contact with the connector body.

    Figure 4-25  Attaching the connector body to the wire holder

  9. Slide the metal shell towards the connector body until the wire holder and the connector body are wrapped completely. Crimp the connector, as shown in Figure 4-26.

    Figure 4-26  Crimping the connector

  10. Slide the jacket towards the metal shell until the metal shell is wrapped. One end of the cable is now completely assembled, as shown in Figure 4-27.

    Figure 4-27  Wrapping the metal shell

  11. To complete the assembly of the other end, repeat 1 through 10.

Assembling the Unshielded RJ45 Connector and the Ethernet Cable

This section describes how to assemble an unshielded RJ45 connector and a straight-through Ethernet cable.

Context

Figure 4-28 shows the components of an unshielded RJ45 connector.

Figure 4-28  Unshielded RJ45 connector components

A. Connector plug

B. Connector jacket

C. Twisted-pair cable

Procedure

  1. Remove a 16-mm long section of the jacket, as shown in Figure 4-29.

    When removing the shielding layer, be careful not to damage the insulation layer of the twisted-pair cable.

    Figure 4-29  Removing the jacket of a twisted-pair cable (unit: mm)

  2. Align the four pairs of cables and cut the ends neatly, as shown in Figure 4-30. The connections between the core wires and the pins are listed in Table 4-6.

    Figure 4-30  Connections between core wires and pins (unit: mm)

    Table 4-6  Connections between core wires and pins

    Matching Wire Pins

    Core Wire Color

    1

    White-Orange

    2

    Orange

    3

    White-Green

    4

    Blue

    5

    White-Blue

    6

    Green

    7

    White-Brown

    8

    Brown

  3. Feed the cable into the plug and crimp the connector, as shown in Figure 4-31.

    NOTE:

    Ensure that the cable is in sufficient contact with the plug.

    Figure 4-31  Crimping the connector

  4. To complete the assembly of the other end, repeat 1 through 3.

Checking Metal Contact Strips

This section describes how to check the metal contact strips and how to check whether an assembled RJ45 connector is qualified.

Context

  • To ensure proper contact between the crimped parts and the core wires, the heights and sizes of the metal contact strips must be uniform and standard.
  • The metal contact strips must be parallel to each other and offset by no more than 5°. The top margin of a strip must be parallel to the axis of the connector and offset by no more than 10°.
  • To ensure proper conduction, the surface of the metal contact strips must be clean.
  • The metal contact strips must be in sufficient with the RJ45 socket. The plastic septa must remain intact and be aligned properly.
  • The soldering edge of a metal contact strip must surpass the ends of the core wires. The ends of the core wires must be in contact with the edge of the RJ45 trough. The distance between them must be less than 0.5 mm.

Procedure

  1. Hold the crimped connector with the front side facing you and check whether the metal contact strips are the same height. The height of all metal contact strips should be 6.02 ± 0.13 mm. If a measuring tool is not available, compare the connector with a standard connector. Figure 4-32 shows an unqualified connector, and Figure 4-33 shows a qualified connector.

    NOTE:

    All unqualified connectors must be crimped again.

    Figure 4-32  Metal contact strips of different heights

    Figure 4-33  Metal contact strips of the same height

  2. Hold an RJ45 connector at 45° to better visualize its metal contact strips. Ensure that the top edges of the metal contact strips are parallel. Figure 4-34 shows an unqualified connector with uneven metal contact strips.

    Figure 4-34  Uneven metal contact strips

  3. Check whether the metal contact strips are clean. If they are not clean and cannot be cleaned, replace the RJ45 connector with a new one. Figure 4-35 shows an unqualified connector.

    Figure 4-35  Dirty metal contract strip

  4. Check whether the metal contact strips and the plastic septa are aligned and intact. If a part is skewed and it cannot be fixed, replace the RJ45 connector. Figure 4-36 shows an unqualified connector with askew plastic septa.

    Figure 4-36  Skew plastic septa

  5. Hold the connector with the side facing towards you and check whether you can see the cross-sections of the core wires. Ensure that the ends of the core wires are in sufficient contact with the edge of the RJ45 trough and that the soldering edge of a metal contact strip surpasses the ends of the core wires and is reliably crimped with the core wires. If the RJ45 does not meet these requirements, replace the connector with a new one. Figure 4-37 shows an unqualified connector with core wires that are in insufficient contact with the edge of the RJ45 trough.

    Figure 4-37  Core wires in insufficient contact with the edge of the RJ45 trough

Testing the Connection of Assembled Cables

This section describes how to test an assembled Ethernet cable, which ensures that the connectors and wires at both ends are correctly connected. This section illustrates how to test a straight-through Ethernet cable.

Context

Huawei provides two types of Ethernet cables: straight-through and crossover cables.

  • Straight-through cables are connected in a one-to-one manner. They are used to connect network adapters to equipment such as switches or hubs. Table 4-7 lists the connections of core wires in a straight-through cable.
    Table 4-7  Connections of core wires in a straight-through cable

    RJ45 Connector 1

    RJ45 Connector 2

    Core Wire Color

    Twisted?

    2

    2

    Orange

    Yes

    1

    1

    Orange-White

    6

    6

    Green

    Yes

    3

    3

    Green-White

    4

    4

    Blue

    Yes

    5

    5

    Blue-White

    8

    8

    Brown

    Yes

    7

    7

    Brown-White

  • Crossover cables are connected in a crossover manner. They are used to connect network adapters to equipment such as switches or hubs. Table 4-8 lists the connections of core wires in a crossover cable.
    Table 4-8  Connections of core wires in a straight crossover cable

    RJ45 Connector 1

    RJ45 Connector 2

    Core Wire Color

    Twisted?

    6

    2

    Orange

    Yes

    3

    1

    Orange-White

    2

    6

    Green

    Yes

    1

    3

    Green-White

    4

    4

    Blue

    Twisted

    5

    5

    Blue-White

    8

    8

    Brown

    Yes

    7

    7

    Brown-White

Figure 4-38 shows the pins of an RJ45 connector.

Figure 4-38  RJ45 connector pins

Procedure

  1. Feed both cable connectors into the ports of the cable tester.
  2. After the connectors are properly inserted, turn on the tester. If the indicators from 1 to G turn on simultaneously, the pins are working normally and the wires are correctly connected.

    NOTE:

    Turn the switch to the S position and check whether the indicators turn on simultaneously. Figure 4-39 shows a test with both indicators on.

    Figure 4-39  Testing wire connection and conduction

  3. Hold the connectors shown in Figure 4-40 and gently shake it. Then repeat 2 to check whether the metal contact strips are in sufficient contact with the core wires and Ethernet ports.

    Figure 4-40  Checking connection reliability

    The procedure for testing a crossover cable is the same as that for testing a straight-through cable except for the sequence in which the indicators turn on. For that sequence, refer to crossover cable wire connections.

    The Ethernet cable is qualified if the indicators turn on in the following sequence:

    On the tester's master panel (on the left), the indicators turn on in the sequence 1-8-G. On the tester's slave panel (on the right), the indicators turn on in the sequence 3-6-1-4-5-2-7-8-G.

    If the indicators do not turn on in those sequences, the Ethernet cable is unqualified.

    NOTE:

    If a tester is not available, use a multimeter to perform a simple test, as shown in Figure 4-41.

    Figure 4-41  Testing the connection of an Ethernet cable with a multimeter

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Updated: 2019-01-04

Document ID: EDOC1100059253

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