15-5
Cisco ONS 15454 DWDM Installation and Operations Guide, R6.0
September 2005
Chapter 15 Shelf Hardware Reference
15.2.2 Mounting a Single Node
15.2.2 Mounting a Single Node
Mounting the ONS 15454 ANSI shelf in a rack requires a minimum of 18.5 inches (469.9 mm) of
vertical rack space and one additional inch (25.4 mm) for air flow. To ensure the mounting is secure, use
two to four #12-24 mounting screws for each side of the shelf assembly.
shows the rack
mounting position for the ONS 15454 ANSI shelf.
Figure 15-2
Mounting an ONS 15454 ANSI Shelf in a Rack
Two people should install the shelf assembly; however, one person can install it using the temporary set
screws included. The shelf assembly should be empty for easier lifting. The front door can also be
removed to lighten the shelf assembly.
15.2.3 Mounting Multiple Nodes
Most standard (Telcordia GR-63-CORE, 19-inch [482.6-mm] or 23-inch [584.2-mm]) seven-foot
(2.133-m) racks can hold four ONS 15454 ANSI shelves and a fuse and alarm panel. However, unequal
flange racks are limited to three ONS 15454 ANSI shelves and a fuse and alarm panel, or four
ONS 15454 ANSI shelves using a fuse and alarm panel from an adjacent rack.
If you are using the external (bottom) brackets to install the fan-tray air filter, you can install three shelf
assemblies in a standard seven-foot (2.133-m) rack. If you are not using the external (bottom) brackets,
you can install four shelf assemblies in a rack. The advantage of using the bottom brackets is that you
can replace the filter without removing the fan tray.
FA
N FA
IL
CRIT
MAJ
MIN
Equipment rack
Universal
ear mounts
(reversible)
39392
Summary of Contents for ONS 15454 DWDM
Page 38: ...Figures xxxviii Cisco ONS 15454 DWDM Installation and Operations Guide R6 0 August 2005 ...
Page 54: ...Procedures liv Cisco ONS 15454 DWDM Installation and Operations Guide R6 0 August 2005 ...
Page 64: ... 64 Cisco ONS 15454 DWDM Installation and Operations Guide R6 0 August 2005 Chapter ...