Cisco ONS 15454 SDH Specifications download pdf (Page 72)

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Cisco ONS 15454 SDH Installation and Operations Guide, R3.3

May 2002

Chapter 1 Hardware Installation

Fiber-Optic Cable Installation

1.11 Fiber-Optic Cable Installation

This section explains how to install optical fibers on OC-N/STM-M cards.

Caution Always use the supplied ESD wristband when working with an ONS 15454 SDH. Plug the wristband

cable into the ESD jack located on the middle-right outside edge of the shelf assembly.

ONS OC-N/STM-M cards feature SC connectors. To install fiber-optic cables in the ONS 15454 SDH,

a fiber cable with the corresponding connector type must be connected to the transmit and receive ports

on the ONS 15454 SDH cards. On ONS 15454 SDH optical card ports, the top connector is transmit and

the bottom connector is receive. Cisco recommends that the transmit and receive and the working and

protect fibers be labeled at each end of the fiber span to avoid confusion. For information about fiber

cable management, see the “Optical Cable Management” section on page 1-43.

Warning

Class-I (21 CFR 1040.10 and 1040.11) and Class-1M (IEC 60825-1 2001-01) laser products.

Warning

Invisible laser radiation can be emitted from the end of the unterminated fiber cable or connector.

Do not stare into the beam or view directly with optical instruments. Viewing the laser output with

certain optical instruments (for example, eye loupes, magnifiers, and microscopes) within a

distance of 100 mm can pose an eye hazard. Use of controls or adjustments or performance of

procedures other than those specified can result in hazardous radiation exposure.

Caution The laser is active when the card is booted and the safety key is in the on position (labeled 1). The

port does not have to be in service for the laser to be on. The laser is off when the safety key is off

(labeled 0).

Note Do not use fiber loopbacks with the OC192 LR/STM64 LH 1550 card unless you are using a 20 dB

attenuator. Never connect a direct fiber loopback. Using fiber loopbacks causes irreparable damage

to the OC192 LR/STM64 LH 1550 card.

Procedure: Install Fiber-Optic Cables on STM-N Cards

Note Clean and inspect all fiber connectors thoroughly. Dust particles can degrade performance. Put caps

on any fiber connectors that are not used.

Step 1 Place the SC connector in front of the connection point on the card faceplate. Each card supports at least

one transmit and one receive connector to create an optical carrier port. Figure 1-18 shows the cable

location.

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Cisco ONS 15454 SDH Specifications Page 72