Chapter 3: Installation

3.5.4Connecting a Fiber Optic Segment to the DELFX-UI and DELF3-UI

The DELFX-UI and DELF3-UI have an SC style network port (see Figure 3-7). Cabletron Systems supplies fiber optic cable that uses SC style connectors that are keyed to ensure proper crossing over of the transmit and receive fibers.

An odd number of crossovers (preferably one) must be

!maintained between devices so that the transmit port of one device is connected to the receive port of the other device and

vice versa.

If the fiber optic cable being used has SC style connectors that do not resemble MIC style connectors, or has SC connectors on one end and a different type on the other, such as ST connectors, ensure that the proper crossing over occurs.

Fiber Optic Network Connection

1.Remove the protective plastic covers from the fiber optic ports on the applicable port on the module and from the ends of the connectors.

The DELF3-UI uses Class 1 lasers. Do not use optical instruments to view the laser output. The use of optical instruments to view laser output increases eye hazard. When viewing the output optical port, power must be removed from the network adapter.

Do not touch the ends of the fiber optic strands, and do not let

!the ends come in contact with dust, dirt, or other contaminants. Contamination of the ends causes problems in data transmissions. If the ends become contaminated, clean them with alcohol using a soft, clean, lint-free cloth.

2.Insert one end of the SC connector into the DELFX-UI or DELF3-UI installed in the DLE2X-MA. See Figure 3-7.

3.At the other end of the fiber optic cable, attach the SC connector to the other device.

3-12 DLE22-MA, DLE32-MA, DLE23-MA and DLE33-MA User’s Guide

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Cabletron Systems manual 12 DLE22-MA, DLE32-MA, DLE23-MA and DLE33-MA User’s Guide