HP J4865A User Manual - Page 26

Installation Location, Installing the Series 4100gl, Switches

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Installing the Series 4100gl Switches Installing the Series 4100gl Switches Installation Procedures Port Type Cable Type Length Limits Fiber Optic Cables Gigabit-SX (on Gigabit-SX-LC mini-GBIC) Multimode fiber-optic cables fitted with LC connectors 220 meters to 550 meters depending on the cable used. See "Fiber-Optic Cables" on page B-3 for more information. Gigabit-LX (on Gigabit-LX-LC mini-GBIC) Single-mode fiber-optic cables fitted with LC connectors. • single-mode cable = 10 kilometers • multimode cable = 550 meters The multimode cables specified for the GigabitSX mini-GBIC may also be used, but a modeconditioning patch cord may be needed - See the Installation Guide that came with your module for more information. Gigabit-LH (on Gigabit-LH-LC mini-GBIC) The same single-mode fiber-optic cables as for • 70 kilometers Gigabit-LX. Note: Gigabit-LH - Between the transmit and receive ends of the cable, at least 5db of attenuation is required for a reliable connection. This is equivalent to 20Km of the fiber-optic cable. For distances less than 20Km, you must add attenuators to bring the total attenuation to at least 5db. Most cable vendors carry attenuators. Installation Location Before installing the switch, plan its location and orientation relative to other devices and equipment: ■ In the front of the switch, allow at least 7.6 cm (3 inches) of space for the twisted-pair and fiber-optic cabling. ■ In the back of the switch, allow at least 10.2 cm (4 inches) of space for the power cord and cooling. ■ On the sides of the switch, leave at least 7.6 cm (3 inches) for cooling. 2-6

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Installing the Series 4100gl Switches
Installation Procedures
Port Type
Cable Type
Length Limits
Fiber Optic Cables
Gigabit-SX
Multimode fiber-optic cables fitted with LC
220 meters to 550 meters depending on the
(on Gigabit-SX-LC
connectors
cable used. See “Fiber-Optic Cables” on
page
mini-GBIC)
B-3
for more information.
Gigabit-LX
Single-mode fiber-optic cables fitted with LC
•
single-mode cable = 10 kilometers
(on Gigabit-LX-LC
connectors.
•
multimode cable = 550 meters
mini-GBIC)
The multimode cables specified for the Gigabit-
SX mini-GBIC may also be used, but a mode-
conditioning patch cord may be needed — See
the
Installation Guide
that came with your
module for more information.
Installing the Series 4100gl
Switches
Gigabit-LH
The same single-mode fiber-optic cables as for
•
70 kilometers±
(on Gigabit-LH-LC
Gigabit-LX.±
mini-GBIC)±
Note:
Gigabit-LH
- Between the transmit and receive ends of the cable, at least 5db of attenuation is required for a reliable
connection. This is equivalent to 20Km of the fiber-optic cable. For distances less than 20Km, you must add attenuators
to bring the total attenuation to at least 5db. Most cable vendors carry attenuators.
Installation Location
Before installing the switch, plan its location and orientation relative to other
devices and equipment:
■
In the front of the switch, allow at least 7.6 cm (3 inches) of space for the
twisted-pair and fiber-optic cabling.
■
In the back of the switch, allow at least 10.2 cm (4 inches) of space for the
power cord and cooling.
■
On the sides of the switch, leave at least 7.6 cm (3 inches) for cooling.
2-6