Cabletron Systems EPIM F3 Guide de l'utilisateur télécharger pdf (Page 20)

INSTALLATION REQUIREMENTS/SPECIFICATIONS

2-8

JAM Output: Collisions are propagated through the

network using the JAM signal of an

alternating pattern of 1's and 0's in

accordance with 802.3 speciﬁcations for a

repeater unit.

Fragment Extension: Packet fragments are extended to a

minimum of 96 bits using the JAM [1,0].

Fault Protection: Each segment will disconnect itself from

the other segments if 31 consecutive

collisions occur, or if the collision detector

of a segment is on for longer than

approximately 110 µs. This fault

protection will reset automatically after

one packet is transmitted/received onto the

fault protected segment without causing a

collision.

INTERFACE CONNECTORS

Network (Twisted Pair) Interface

Type: Internally Crossed Over RJ-45 Connector

Pin-out for RJ-45 Connector

Pin 1 RX+ 5 No Connection

2 RX- 6 TX-

3 TX+ 7 No Connection

4 No Connection 8 No Connection

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 81 82

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Cabletron Systems EPIM F3 Guide de l'utilisateur Page 20