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Cabling I/O Modules

The following sections describe how to cable I/O modules with different types of connectors. For information about the connectors on the different line modules, see Appendix B, Module Specifications.

Cabling BNC Connectors

To cable I/O modules with BNC connectors:

  1. Insert the RX male BNC connector into the selected port.
  2. Terminate the other end in the appropriate network interface, such as a multiplexer (MUX) device.
  3. Repeat steps 1 and 2 for the TX connector.
  4. Repeat steps 1-3 for all ports.

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Figure 4-4 I/O module with BNCs

Cabling HSSI Connectors

The HSSI I/O module uses a standard 50-pin HSSI connector.



Caution: Do not terminate HSSI connections with SCSI connectors. Although SCSI connectors look very similar to HSSI connectors, using SCSI connectors on HSSI connections may lead to data loss.

To cable I/O modules with HSSI connectors:

  1. Insert the HSSI connector into the selected port.
  2. Terminate the other end in the appropriate network connection.
  3. Repeat steps 1 and 2 for the other ports.


Figure 4-5 HSSI I/O module with 50-pin HSSI connector

Cabling RJ-45 Connectors

To cable I/O modules with RJ-45 connectors:

  1. Insert the RJ-45 connector into the selected port.
  2. Terminate the other end in the appropriate network connection.
  3. Repeat steps 1 and 2 for the other ports.


Figure 4-6 I/O module with RJ-45 connector

Cabling RJ-48C Connectors

To cable I/O modules with RJ-48C connectors:

  1. Insert the RJ-48C connector into the selected port.
  2. Terminate the other end in the appropriate network interface, such as a multiplexer (MUX) device.
  3. Repeat steps 1 and 2 for all ports.

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Figure 4-7 I/O module with RJ-48C connectors

Cabling LC Duplex Connectors

In accordance with EN60825-1, Safety of Laser Products - Part 1: Equipment Class, Requirements, and User's Guide (2001), multimode I/O modules with LC connectors are defined as follows:

CLASS 1 LED PRODUCT.

In accordance with EN60825-1, Safety of Laser Products - Part 1: Equipment Class, Requirements, and User's Guide (2001), single-mode I/O modules with LC connectors are defined as follows:

CLASS 1 LASER PRODUCT.

To cable I/O modules with LC duplex connectors:



Warning: Do not look directly into LC-style fiber connectors. The fiber-optic laser used in single-mode fiber (SMF) meets the regulatory requirements for casual exposure to the eye; however, looking directly into a laser can cause eye damage.



Warning: IEC 825, Class 1 laser fiber connectors are for connection only to Class 1 laser devices.

  1. Insert the TX male fiber connector into the selected port.
  2. Terminate the other end in the appropriate network connection.
  3. Repeat steps 1 and 2 for the RX fiber connector.
  4. Repeat steps 1-3 for the remaining ports.


Figure 4-8 I/O module with LC full duplex connectors

Cabling SC Duplex Connectors

In accordance with EN60825-1, Safety of Laser Products - Part 1: Equipment Class, Requirements, and User's Guide (2001), multimode I/O modules with SC connectors are defined as follows:

CLASS 1 LED PRODUCT.

In accordance with EN60825-1, Safety of Laser Products - Part 1: Equipment Class, Requirements, and User's Guide (2001), single-mode I/O modules with SC connectors are defined as follows:

CLASS 1 LASER PRODUCT.

To cable I/O modules with SC duplex connectors:



Warning: Do not look directly into SC-style fiber connectors. The fiber-optic laser used in single-mode fiber (SMF) meets the regulatory requirements for casual exposure to the eye; however, looking directly into a laser can cause eye damage.



Warning: IEC 825, Class 1 laser fiber connectors are for connection only to Class 1 laser devices.

  1. Insert the TX male fiber connector into the selected port.
  2. Terminate the other end in the appropriate network connection.
  3. Repeat steps 1 and 2 for the RX fiber connector.
  4. Repeat steps 1-3 for the remaining ports.


Figure 4-9 I/O module with SC full duplex connectors

Cabling SMB Connectors

To cable I/O modules with SMB connectors:

  1. Pull back the metal sheath on the TX cable's SMB connector.
  2. Insert the TX cable's SMB connector into the selected port.
  3. Release the metal sheath on the TX cable's SMB connector.
  4. Terminate the other end in the appropriate network connection.
  5. Repeat steps 1-4 for the RX cable's SMB connector.
  6. Repeat steps 1-5 for the remaining ports.


Figure 4-10 I/O module with SMB connectors

Cabling X.21/V.35 Connectors

Four cables are available for the X.21/V.35 I/O modules:

Each 200-pin proprietary socket on the I/O module provides connections to 8 V.35 or X.21 ports. The remote end of the cable is terminated with either 8 X.21 connectors or 8 V.35 connectors. The cable you attach to the port on the I/O module determines whether the connection is X.21 or V.35 and DCE or DTE.

To cable I/O modules with X.21/V.35 connectors:

  1. Insert the X.21/V.35 connector into the selected socket.
  2. Terminate the other end in the appropriate network connection.
  3. Repeat steps 1 and 2 for the other socket.


Figure 4-11 X.21/V.35 module with 50-pin X.21/V.35 connector

Cabling Redundant Ports

Some modules have redundant ports. See Appendix B, Module Specifications for specifications. Cabling both ports provides a redundant path to the ERX module.



Caution: For port redundancy to operate correctly on a GE I/O module that supports SFPs, both the primary and redundant ports on an ERX GE I/O module must use the same type of SFP.


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