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Cisco ONS 15454 Installation and Operations Guide
November 2001
Chapter1 Hardware Installation
Rack Installation
•Wire strippers
•Crimp tool

1.2.2.2 Test Equipment

•Volt meter
•Power meter (for use with fiber optics only)
•Bit Error Rate (BER) tester, DS-1 and DS-3
1.3 Rack Installation
Warning
To prevent the equipment from overheating, do not operate it in an area that exceeds the maximum
recommended ambient temperature of 131°F (55°C). To prevent airflow restriction, allow at least 3
inches (7.6 cm) of clearance around the ventilation openings.
The ONS 15454 is easily mounted in a 19- or 23-inch equipm ent rack. The shelf assembly projects five
inches from the front of the rack. It mounts in both EIA-standard and Telcordia-standard ra cks. The shelf
assembly is a total of 17 inches wide with no mounting ears attached. With the mounting ears attached,
the shelf assembly is 19 inches wide. Ring runs are not provided by Cisco and may hinder side-by-side
installation of shelves where space is limited.
The ONS 15454 measures 18.5 inches high, 19 or 23 inches wide (de pending on which way the mounting
ears are attached), and 12 inches deep (47 by 48.3 by 30.5 cm). You can install up to four O NS 1545 4s
in a seven-foot equipment rack. The ONS 15454 must have 1 inch of airspace below the installed
shelf assembly to allow air flow to the fan intake. If a second ONS 15454 is installed underneath
the shelf assembly, the air ramp on top of the lower shelf assembly provides the air spacing needed
and should not be modified in any way. Figure1-1 shows the dimensions of the ONS 15454.
Note The 10 Gbps compatible shelf assembly (15454-SA-10G) and fan-tray assembly (15 454-FTA3) are
required with the ONS 15454 XC10G, OC-192, and OC-48 any slot (AS) cards.
Warning
The ONS 15454 should be installed in the lower rack position or mounted above another ONS
15454 shelf assembly.
Warning
The ONS 15454 must have 1 inch of airspace below the installed shelf assembly to allow air flow
to the fan intake. The air ramp (the angled piece of sheet metal on top of the shelf assembly)
provides this spacing and should not be modified in any way.