Technology Distance Specifications - HP E2620 Installation And Getting Started Manual

Cabling and Technology Information
Table B-3. Technology Distance Specifications
Technology Supported cable type
100-FX multimode fiber
100-BX single mode fiber
1000-T twisted-pair copper
1000-SX multimode fiber
1000-LX multimode fiber
single mode fiber
1000-LH single mode fiber
1000-BX single mode fiber
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For distances less than 20km, a 10dB attenuator must be used. For distances between 20km and 40km, a 5dB
attenuator must be used. Attenuators can be purchased from most cable vendors.
B-2
Because of the increased speed provided by 1000Base-T (Gigabit-T), network
cable quality is more important than for either 10Base-T or 100Base-TX.
Cabling plants being used to carry 1000Base-T networking must comply with
the IEEE 802.3ab standards. In particular, the cabling must pass tests for
Attenuation, Near-End Crosstalk (NEXT), and Far-End Crosstalk (FEXT).
Additionally, unlike the cables for 100Base-TX, the 1000Base-T cables must
pass tests for Equal-Level Far-End Crosstalk (ELFEXT) and Return Loss.
When testing your cabling, be sure to include the patch cables that connect
the switch and other end devices to the patch panels on your site. The patch
cables are frequently overlooked when testing cable and they must also
comply with the cabling standards.

Technology distance specifications

Multimode fiber Supported distances
modal bandwidth
any up to 2,000 meters
N/A 0.5 - 10,000 meters
N/A up to 100 meters
160 MHz*km 2 - 220 meters
200 MHz*km 2 - 275 meters
400 MHz*km 2 - 500 meters
500 MHz*km 2 - 550 meters
400 MHz*km 2 - 550 meters
500 MHz*km 2 - 550 meters
N/A 2 - 10,000 meters
N/A 10 - 70,000 meters
N/A 0.5 - 10,000 meters
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