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Magnum14E Media Converters Installation and User Guide (10/02)
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Table 3.2.2a: Worst case round-trip delay for Fast Ethernet media*
Media Type Round-trip delay in Bit Time per Meter (BT/m)
Fiber Optic
1.000
Shielded TP cable
1.112
Category 5 Cable
1.112
Category 4 Cable
1.140
*Worst case delays taken from IEEE Std 802.3u-1995, actual delays may be less for a particular cable.
Contact your cable supplier for exact cable specifications.
Each shared Fast Ethernet network device also has an associated BT delay. Table
3.4b shows typical Fast Ethernet device components and the associated BT delay. Note that
there is only one DTE pair associated with any device-to-device path.