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Preparing for Installation

Preparing for Installation

Before installing the CDDI/FDDI SBus adapter, please read this chapter carefully.

Safety Recommendations

Follow these guidelines to ensure general safety:

Safety with Electricity

Follow these guidelines when working on equipment powered by electricity.

Warning Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals.
Warning Do not work on the system or connect or disconnect cables during periods of lightning activity. (To see translated versions of this warning, refer to the section "Lightning Activity Warning" in the appendix "Translated Safety Warnings.")
Warning Invisible laser radiation may be emitted from the aperture ports of the single-mode FDDI card when no cable is connected. Avoid exposure and do not stare into open apertures. Following is an example of the warning label that appears on the product. (To see translated versions of this warning, refer to the section "Invisible Laser Radiation Warning" in the appendix "Translated Safety Warnings.")



Preventing Electrostatic Discharge Damage

Electrostatic discharge (ESD) can damage equipment and impair electrical circuitry. It occurs when electronic components are improperly handled and can result in complete or intermittent failures.

Always follow ESD-prevention procedures when removing and replacing components. Ensure that the chassis is electrically connected to earth ground. Wear an ESD-preventive wrist strap, ensuring that it makes good skin contact. Connect the clip to an unpainted chassis frame surface to safely channel unwanted ESD voltages to ground. To properly guard against ESD damage and shocks, the wrist strap and cord must operate effectively. If no wrist strap is available, ground yourself by touching the metal part of the chassis.

Caution For safety, periodically check the resistance value of the antistatic strap, which should be between 1 and 10 Mohms.

Site Requirements

Following are the site requirements for installation.

Environment

Choose a clean, dust free, (preferably) air-conditioned location. Avoid direct sunlight, heat sources, or areas with high levels of electromagnetic interference (EMI).

Adapter Accessibility

Because the adapter faceplate status indicators provide information that you may need to monitor, make the rear of the SPARCstation or SPARCserver accessible. Leave sufficient clearance at the rear of the SPARCstation or SPARCserver for cabling and service.

Power

The source electrical outlet should be installed near the SPARCstation or SPARCserver, easily accessible, and properly grounded. Power should come from a building branch circuit. Use a maximum breaker current rating of 20A for 110V or 8A for 230V. Note the power consumption ratings of each unit before you connect to a power source.

Warning Before working on a system that has an on/off switch, turn OFF the power and unplug the power cord. (To see translated versions of this warning, refer to the section "Power Disconnection Warning" in the appendix "Translated Safety Warnings.")
Warning Do not touch the power supply when the power cord is connected. For systems with a power switch, line voltages are present within the power supply even when the power switch is off and the power cord is connected. For systems without a power switch, line voltages are present within the power supply when the power cord is connected. (To see translated versions of this warning, refer to the section "Power Supply Warning" in the appendix "Translated Safety Warnings.")
Warning Before you work on a system that does not have an ON/OFF switch, unplug the power cord. (To see translated versions of this warning, refer to the section "No On/Off Switch Warning" in the appendix "Translated Safety Warnings.")

Cabling Requirements

Following are the cabling requirements for installation. For pinouts of the following cable types, refer to the appendix "Cabling and Pinout Information."

FDDI

The multimode FDDI connectors on the CDDI/FDDI SBus adapter accept 50/125-micron multimode fiber, with standard FDDI media interface connector (MIC)-type connectors. (See Figure 2-1.) The maximum transmission distance between stations must not exceed 1.2 miles (2 km).


Figure 2-1: Multimode FDDI Interface Connector--MIC Type



CDDI

Check all existing cables for conformance with CDDI/multilevel transmission (MLT)-3 distance requirements and to ensure that you have the proper connectors (modular RJ-45). (See Figure 2-2.)


Figure 2-2: CDDI Interface Connector--RJ-45 Type

Following are cable and distance specifications:

Electronics Industries Association/Telecommunications Industries Association (EIA/TIA) 568 Category 5, data-grade cable is recommended for CDDI installations. The total length of data-grade UTP cable from the adapter or media attachment unit (MAU) to the switch must not exceed 330 feet (100 m), including patch cords and cross-connect jumpers.
You can use IBM Type 1 shielded twisted-pair (STP) wiring for your CDDI installation. The total length of STP cable measured from the adapter or MAU to the switch must not exceed 330 feet (100 meters).

Note You must use high-performance, Category 5, data-grade, modular cables for external connections.

When you plan your CDDI installation, remember the following:

Tools and Materials Required

To install the CDDI/FDDI SBus adapter, you need the following tools and supplies:

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