Safety Recommendations

• Keep the chassis area clear and dust-free during and after installation.

  · Disconnect all power before doing the following:

  • Changing the Ethernet connection

  • Removing a chassis

  • Working near power supplies

  • Changing a fuse

  • Installing or removing an expansion board
• Never assume power is disconnected from a circuit. Always check.

  · Before applying power:

  • Look carefully for possible hazards in your work area, such as moist floors, ungrounded power extension cables, and missing safety grounds.

  • Locate the emergency power-off switch for the room in which you are working.
• Do not perform any action that creates a potential hazard to people or makes the equipment unsafe.

  Warning ¯ The IRX contains no user-serviceable parts. Therefore the chassis should never be opened, except when adding an expansion board.

• Keep tools away from walk areas where you and others could fall over them.

  · Do not wear loose clothing that could get caught in the chassis. Fasten your tie or scarf and roll up your sleeves.

  · Wear safety glasses when working under any conditions that might be hazardous to your eyes.

  · Do not perform any action that creates a potential hazard to people or makes the equipment unsafe.

  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 conductors.

• Locate the emergency power-off switch for the room in which you are working; then, if an electrical accident occurs, act quickly to turn the power off.

• Before working on the system, unplug the power cord.

• Do not work alone if potentially hazardous conditions exist.

  · If an electrical accident occurs, proceed as follows:

  • Use caution; do not become a victim yourself.

  • Unplug power to the system.

  • If possible, send another person to get medical aid; otherwise, assess the condition of the victim and then call for help.

  • Determine if the person needs rescue breathing or external cardiac compression, then take appropriate action.

    Caution ¯ If the internal components of the IRX are handled, electrostatic discharge can occur, resulting in damage to its circuitry and followed by complete or intermittent failures. Use an anti-static strap when installing or removing expansion boards.

Prevent Electrostatic Damage

General Site Requirements

Site Environment

Chassis Accessibility

Cooling and Airflow

Cable Requirements

Note ¯ For cabling specifications, refer to Appendix B, "Cabling Specifications."
To order any of these cables from Lucent InterNetworking Systems, specify the product code indicated or consult the price list.

Console Cable (S0)

For cabling specifications, refer to Appendix B, "Cabling Specifications."

Synchronous Cable

The synchronous ports always require an external clock signal.

For cabling specifications, refer to Appendix B, "Cabling Specifications." To order additional V.35 cables from Lucent InterNetworking Systems, specify product code DC-6.

Caution ¯ The synchronous port does not function as an async port. Do not attempt to connect an async device to this port.

Ethernet 10BaseT Cable

This is a standard 10BaseT cable, which can be ordered from Lucent InterNetworking Systems.

Ethernet AUI Cable

This is a standard AUI cable, which can be ordered from Lucent InterNetworking Systems.

Ethernet BNC Cable

This is a standard 10Base2 cable, which can be ordered from Lucent InterNetworking Systems.

Power Guidelines

• Inspect the IRX to verify that:
  • Cables are installed correctly

  • Ventilation is adequate

  • Power is coming from a building branch circuit
• Before you connect to a power source, verify that the source is properly grounded and falls within the (internal) power supply rating. The IRX operates correctly at any AC voltage from 100V to 260V and frequencies from 50 to 60 Hz.

Tools and Equipment Required

A 3/16" flat-blade screwdriver is required to change the fuse, and a phillips-head screwdriver is required for adding an expansion board. The same phillips-head screwdriver can be used for rack installation.

Caution ¯ Consult "Fuses" on page 3-6 before changing the IRX fuse. Consult "Installing an IRX Expansion Card" on page 3-13 before adding an expansion board and "Removing an IRX Expansion Card" on page 3-14 before removing an expansion board.