Allied-telesis AT-MR820TR Manual do Utilizador descarregar pdf (Página 26)

Product Description

jabber lock-up automatically prevents transmitted data from reaching

the repeater if the transmitted data time exceeds a specified duration

(usually 5 ms).

Backbone Network Port

There are two user-selectable network media options which can be

used to connect to a backbone network: 10Base2 and 10Base5.

These network ports are located on the back panel. See Figure 3.

Figure 3: Network Media Options

These media alternatives are:

❑ 10Base2 (Bayonet Nut Couple [BNC])

— 10Base2 requires a thin coaxial cable, RG58U, which is a 10

MHz baseband cable that uses BNC-series connectors. The

cable must be terminated at both ends with 50 Ω

terminators and grounded at one end. Maximum segment

length is 185 meters (606 ft.). Internal termination is

provided via the BNC Terminator Switch. See Chapter 4

“BNC Terminator Switch” for details concerning this

switch.

MRx20TR(STP/UTP)_BookA Page 4 Thursday, April 3, 1997 5:24 PM

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Allied-telesis AT-MR820TR Manual do Utilizador Página 26