HP ProCurve J4863A Manual de instalación - Página 17
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Installing the gl Modules
100/1000-T gl Module
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twisted-pair
cable with
RJ-45 connector
Note: In the module's default configuration, Auto, either a straight-through or crossover cable can be used to connect
the module to either another Gigabit device or to a 100Base-T device. See the Note on Automatic Cable Sensing on
page
11.
mini-GBIC gl Module
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fiber-optic cable
with
LC connector
Notes:
Gigabit-LX – If multimode cable is used, a mode conditioning patch cord may be needed — see "Mode Conditioning
Patch Cord" on
page 25
for more information.
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.
10
Module
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RJ-45 ports with
"Auto MDI/MDI-X"
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Gigabit-LX or Gigabit-SX
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mini-GBICs
Continued on the next page.
Cable Type
100 Mbps operation:
category 5, 100-ohm
differential twisted-pair
cable
1000 Mbps (Gigabit)
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operation: category 5E,
100-ohm cable is
recommended, although
category 5 cable may also
work.
Gigabit-SX operation:
multimode fiber-optic
cables that are fitted with
LC connectors
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Gigabit-LX operation:
single-mode fiber-optic
cables fitted with LC
connectors.
multimode fiber-optic
cables may also be
used—see "Fiber-Optic
Cables" on
page
Gigabit-LH operation:
the same single-mode
cables as for Gigabit-LX.
Maximum Length
100 meters
100 meters
220 meters to 550
meters, depending on
the cable used. See
"Fiber-Optic Cables"
on
page 24
for more
information.
• single-mode cable:
10 kilometers
• multimode cable:
550 meters
24.
70 kilometers