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# Cabling I/O Modules

This section illustrates the common connector types used with ERX I/O modules. For information about the connectors on the different line modules, see the ERX Module Guide.

## BNC Connectors

Figure 29: I/O Module with BNCs

## 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 can lead to data loss.

Figure 30: HSSI I/O Module with 50-Pin HSSI Connector

## RJ-45 Connectors

When inserting an RJ-45 connector, be sure it clicks into the port.

Figure 31: I/O Module with RJ-45 Connector

## RJ-48C Connectors

When inserting an RJ-48C connector, be sure it clicks into the port.

Figure 32: I/O Module with RJ-48C Connectors

## 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.

| 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.

## 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.

| 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.

SC duplex connectors have the same basic shape as LC duplex connectors, but are slightly larger. See Figure 33.

Figure 33: I/O Module with SC Full Duplex Connectors

## SMB Connectors

To cable I/O modules with SMB connectors, pull back the metal sheath on the connector, insert the connector into the selected port, and release the metal sheath.

Figure 34: I/O Module with SMB Connectors

## X.21/V.35 Connectors

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

- X.21 DCE cable (terminated with 8 female X.21 connectors)
- X.21 DTE cable (terminated with 8 male X.21 connectors)
- V.35 DCE cable (terminated with 8 female V.35 connectors)
- V.35 DTE cable (terminated with 8 male V.35 connectors)

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.

Figure 35: X.21/V.35 Module with 50-Pin X.21/V.35 Connector

## Redundant Ports

Some modules have redundant ports. See the ERX Module Guide for specifications. Cabling both ports provides a redundant path to the 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 E-series GE I/O module must use the same type of SFP.

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