HP J4865A User Manual - Page 71

Twisted-Pair Cable/Connector Pin-Outs, Fiber-Optic Cables, The HP Auto-MDIX Feature:.

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Switch Ports and Network Cables Twisted-Pair Cable/Connector Pin-Outs Port Type Gigabit-SX Gigabit-LX Gigabit-LH Fiber-Optic Cables Cable Specifications Connector Type Maximum Length 62.5/125 mm or 50/125 µm (core/cladding) diameter, graded-index, low metal content, multimode fiber-optic cables, complying with the ITU-T G.651 and ISO/IEC 793-2 Type A1b or A1a respectively. LC - Gigabit-SX mini-GBIC SC - Gigabit-SX transceiver • 62.5 µm cable: - 160 MHz*km=220 meters - 200 MHz*km=275 meters • 50 µm cable: - 400 MHz*km=500 meters - 500 MHz*km=550 meters 9/125 µm (core/cladding) diameter, gradedin1310 nm, low metal content, single mode fiber-optic cables, complying with the ITU-T G.652 and ISO/IEC 793-2 Type B1 standards. OR the multimode fiber-optic cables listed for Gigabit-SX. LC - Gigabit-LX mini-GBIC SC - Gigabit-LX transceiver • single-mode cable: 10 kilometers • Multimode cable: 550 meters Note: To use multimode cables for Gigabit-LX, a mode conditioning patch cord may be needed - See the Installation Guide that came with your module for more information. 9/125 mm (core/cladding) diameter, gradedin1310 nm, low metal content, single mode fiber-optic cables, complying with the ITU-T G.652 and ISO/IEC 793-2 Type B1 standards. LC - Gigabit-LH mini-GBIC 70 kilometers Note: 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. Twisted-Pair Cable/Connector Pin-Outs The HP Auto-MDIX Feature:. In the default configuration, "Auto", the 10/100Base-TX ports on the 10/100-TX gl Module that is used in the Series 4100gl Switches all automatically detect the type of port on the connected device and operate as either an MDI or MDI-X port, whichever is appropriate. So for any connection, a straight-through twisted-pair cable can be used -- you no longer have to use crossover cables, although crossover cables can also be used for any of the connections. The 100/1000-T gl Module, and the 100/1000-T Transceiver supports the IEEE 802.3ab standard, which includes the "Auto MDI/MDI-X" feature, which operates the same way. Switch Ports and Network Cables B-3

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Switch Ports and Network Cables
Twisted-Pair Cable/Connector Pin-Outs
Fiber-Optic Cables
Port Type
Cable Specifications
Connector Type
Maximum Length
Gigabit-SX
62.5/125 mm or 50/125
µ
m (core/cladding)
diameter, graded-index, low metal content,
multimode fiber-optic cables, complying
with the ITU-T G.651 and ISO/IEC 793-2 Type
A1b or A1a respectively.
LC
- Gigabit-SX
mini-GBIC
SC
- Gigabit-SX
transceiver
•
62.5
µ
m cable:
– 160 MHz*km=220 meters
– 200 MHz*km=275 meters
•
50
µ
m cable:
– 400 MHz*km=500 meters
– 500 MHz*km=550 meters
Gigabit-LX
9/125
µ
m (core/cladding) diameter, graded-
in1310 nm, low metal content, single mode
fiber-optic cables, complying with the ITU-T
G.652 and ISO/IEC 793-2 Type B1 standards.
OR
the multimode fiber-optic cables listed for
Gigabit-SX.
LC
- Gigabit-LX
mini-GBIC
SC
- Gigabit-LX
transceiver
•
single-mode cable:
10 kilometers
•
Multimode cable:
550 meters
Note: To use multimode cables for Gigabit-LX, a mode conditioning patch cord may be needed - See the
Installation Guide
that came with your module for more information.
Gigabit-LH
9/125 mm (core/cladding) diameter, graded-
in1310 nm, low metal content, single mode
fiber-optic cables, complying with the ITU-T
G.652 and ISO/IEC 793-2 Type B1 standards.
LC
- Gigabit-LH
mini-GBIC
70 kilometers
Note:
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.
Twisted-Pair Cable/Connector Pin-Outs
The HP Auto-MDIX Feature:.
In the
default configuration
, “Auto”, the
10/100Base-TX ports on the 10/100-TX gl Module that is used in the Series
4100gl Switches all automatically detect the type of port on the connected
device and operate as either an MDI or MDI-X port, whichever is appropriate.
So for any connection, a straight-through twisted-pair cable can be used --
you
no longer have to use crossover cables
, although crossover cables can also be
used for any of the connections. The 100/1000-T gl Module, and the
100/1000-T Transceiver supports the IEEE 802.3ab standard, which includes
the “Auto MDI/MDI-X” feature, which operates the same way.
Cables
Switch Ports and Network
B-3