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This chapter includes the following pre-installation topics: safety recommendations, general site requirements, cable requirements, power guidelines, tools and equipment.
When using the IRX, always follow these safety guidelines:
Warning:
The IRX contains no user-serviceable parts. Therefore the chassis should
never be opened, except when adding an expansion board.
When working on the IRX, follow these additional guidelines:
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.
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.
Electrostatic Discharge (ESD) can damage equipment and impair circuitry. To avoid ESD damage, always use an anti-static strap when installing or removing expansion boards.
This section describes the requirements your site must meet for safe installation and unimpeded operation of the IRX. Prepare your site properly before beginning installation.
Choose a clean, dust-free and (preferably) air conditioned location. Avoid direct sunlight, proximity to heat sources, and areas with high levels of electromagnetic interference (EMI).
Leave at least three (3) inches (8 cm) clearance at the rear of the IRX for cabling.
To prevent overheating, the operating environment for the IRX should not exceed 113oF (45oC). For proper airflow, allow at least three (3) inches (8 cm) clearance around the vent openings.
The required cables for the IRX are described in the following sections.
Note:
For cabling specifications, refer to Appendix B, "Cabling Specifications."
To order any of these cables from Livingston Enterprises, specify the product code
indicated or consult the price list.
The S0 console port is an asynchronous (async) DTE port with a female RS-232 connector. To connect to a terminal (DTE), use a null modem cable, typically male-to-female. To connect to a modem (DCE), use a male-to-male straight-through cable.
For cabling specifications, refer to Appendix B, "Cabling Specifications."
Ports S1 and S3 are capable of speeds up to T1/E1. Ports S2 and S4 are capable of speeds up to 64K. Each port has a switch which selects RS-232 (when UP) or V.35 (when DOWN) signalling. One V.35 cable is provided.
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 Livingston Enterprises, 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.
The Ethernet 10BaseT port accepts a modular RJ-45 connector. 10BaseT requires a minimum Category 3 twisted pair cable, as specified by the EIA/TIA-568-B wiring standard. The distance limitation for 10BaseT is a maximum of 328 feet (100m).
This is a standard 10BaseT cable, which can be ordered from Livingston Enterprises.
The Ethernet AUI port accepts a standard AUI cable with a DB-15 female connector, or a standard AUI Ethernet transceiver.
This is a standard AUI cable, which can be ordered from Livingston Enterprises.
The Ethernet BNC port accepts a standard 10Base2 (thin Ethernet) coaxial cable, which should be terminated at both ends. Use the BNC T-adapter included with the IRX to connect the thin Ethernet cable to the IRX.
This is a standard 10Base2 cable, which can be ordered from Livingston Enterprises.
Before applying power, read the following power guidelines carefully:
The IRX has no internal user-serviceable parts, except for changing the fuse or adding an expansion board.
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.
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