Cisco Laser Link 1310 nm Transmitters Installationsanleitung
78-4028521-01 Rev B
General Information
1-3
Laser Link III Mainframe Description
Overview
This section contains physical and functional descriptions of the Laser Link III
Mainframe.
Physical Description
The Laser Link III Mainframe has seven full-width module bays that may be
configured to support optical/RF amplifiers, upstream/downstream transmitters or
downstream receivers. Plug-in modules may be arranged in various combinations
within the mainframe to meet particular application needs.
Two half-width modules may be supported in a full-width bay to allow housing up
Two half-width modules may be supported in a full-width bay to allow housing up
to 14 such units in a 5 RU space.
The Laser Link III Mainframe fits into a standard 5 RU (8.75 inches/22 cm) high by
19- or 23-inch (48 or 58 cm) wide area that is approximately 20 inches (51 cm) deep.
It should be mounted in a cabinet that conforms to ANSI/EIA-310-C standards.
Adjustable mounting ears are provided with each unit. Four positions allow
Adjustable mounting ears are provided with each unit. Four positions allow
selecting the depth to which the frame is installed. The mainframe may be mounted
flush to the bay or protruding up to 5 inches (13 cm). See Chapter 2, Installation, for
information regarding maximum torque requirements when moving the ears.
Note: Ears for mounting the mainframe in a 23-inch bay are not included and must
Note: Ears for mounting the mainframe in a 23-inch bay are not included and must
be ordered separately (P/N 704095). Also, rack screws are not included with the
mainframe. See Chapter 2, Installation, for information regarding maximum torque
requirements when replacing the ears.