Cabletron Systems DELHE-UA manual Connecting a Twisted Pair Segment to the DELTX-UI

Chapter 2: Installation

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, blow the surfaces clean with a canned duster. A fiber port cleaning swab saturated with optical-grade isopropyl alcohol may also be used to clean the ends.

2.Insert one end of the SC connector into the FEPIM.

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

4.Verify that a link exists by checking that the port receive LED is ON (flashing amber, blinking green, or solid green). If the receive LED is OFF and the transmit LED is not blinking amber, perform the following steps until it is ON:

a.Check that the power is turned on for the device at the other end of the link.

b.Verify proper crossover of fiber strands between the port on the DELHE-UA and the fiber optic device at the other end of the fiber optic link segment.

c.Verify that the fiber connection meets the dB loss specifications outlined in Appendix B.

If a link has not been established, refer to Chapter 3, LANVIEW LEDs, before contacting a DIGITAL representative.

2.4.2Connecting a Twisted Pair Segment to the DELTX-UI

A DELTX-UI has an internal crossover switch. When connecting a workstation, use a straight-through cable and set the FEPIM crossover switch shown in Figure 2-5 to the crossed over position marked with X. When connecting networking devices, such as another bridge, repeater, or router, use a straight-through cable and set the FEPIM crossover switch shown in Figure 2-5 to the straight-through position, marked with =.

2-10 DELHE-UA User’s Guide