3com 3C17502 User Manual
26
C
HAPTER
2: I
NSTALLING
T
HE
S
WITCH
8800
Single-mode optical fiber cable is used for external connections of the single-mode
optical port. Multi-mode optical fiber cable is used for external connections of the
multi-mode optical port.
optical port. Multi-mode optical fiber cable is used for external connections of the
multi-mode optical port.
WARNING: When a connector is not inserted in the optical port or when its
dustproof cover is open, invisible radiation can escape from the optical port. Do
not stare into the optical port directly. Cover the optical port if there is no
connector plugged in.
dustproof cover is open, invisible radiation can escape from the optical port. Do
not stare into the optical port directly. Cover the optical port if there is no
connector plugged in.
To attach the LC fiber connector:
1 Plug one end of the LC fiber connector into the optical port in the module.
2 Connect the other end of the connector to the corresponding device.
Installing Cabling
This section describes how to install and bind cables for your Switch 8800.
Bench-Mounted Switch
If you have installed your chassis on a bench, all interface cables run on the left
side of the chassis in the cabling channel, and the chassis power cords run by the
rear chassis panel.
side of the chassis in the cabling channel, and the chassis power cords run by the
rear chassis panel.
Rack-Mounted Switch
If you have installed your switch in a 19-inch standard rack, the cables are bound
on the cable binding rack at the left side of the chassis and arranged to run on the
cable rack or under a raised floor. Collect all the transit data signal cable
connectors and locate them on the floor of the chassis. Power cords run out of the
rear left of the chassis and on a cable rack or under a raised floor.
on the cable binding rack at the left side of the chassis and arranged to run on the
cable rack or under a raised floor. Collect all the transit data signal cable
connectors and locate them on the floor of the chassis. Power cords run out of the
rear left of the chassis and on a cable rack or under a raised floor.
Cable Binding
Keep the following precautions in mind as you bind cables:
■
Do not allow cables to twist or bend as you bind them.
■
The cable body cannot be bent at an angle that is more than twice its diameter.
The cable running out of a connector cannot be bent more than five times its
diameter.
The cable running out of a connector cannot be bent more than five times its
diameter.
■
Different types of cables (power cord, signal cable, and ground wire) should
not be bound together in a rack. Although different types of cable may cross
over each other, they must not be bound together where they cross. For
parallel cabling, the space between a power cord and a signal cable should be
no less than 30 mm (1.25 in).
not be bound together in a rack. Although different types of cable may cross
over each other, they must not be bound together where they cross. For
parallel cabling, the space between a power cord and a signal cable should be
no less than 30 mm (1.25 in).
■
The cable binding rack and cable channel inside and outside a rack should be
smooth.
smooth.
■
The hole through which a cable runs through should be smooth or have a
rubber grommet.
rubber grommet.
■
Use plastic cabling ties to bind the cables.
■
Bind cables before bending them. Ensure that no tie binds the bent part of any
cables to prevent the core of the cable from breaking.
cables to prevent the core of the cable from breaking.
■
Do not tie power cables to the guides of any mobile components.
■
For the cable terminals fixed with screws, the screws or nuts should be
fastened securely.
fastened securely.
■
Do not use tapping screws to fasten the cabling terminals.