Cabletron Systems MR-9000TPT User Manual - page 9

Page 2-1

CHAPTER 2

SPECIFICATIONS AND REQUIREMENTS

2.1

SPECIFICATIONS

Listed below are the electrical and physical specifications of the

MR-9000TPT. Cabletron Systems reserves the right to change these

specifications at any time without notice.

General Specifications

Start of packet delay times

Twisted pair in to

AUI out:

1300 ns max.

Twisted pair in to

twisted pair out:

1450 ns max.

AUI in to

twisted pair out:

1050 ns max.

Collision to JAM delay times

Twisted pair in to

AUI out:

750 ns max.

Twisted pair in to

twisted pair out:

950 ns max.

AUI in to

twisted pair out:

850 ns max.

Preamble

Input:

40 bits minimum to a maximum of 64

bits. Packets that do not meet this

range are discarded as runts or giants.

Output:

64 bits minimum (last 2 bits are 1,1).

JAM output:

JAM pattern (1,0) is sent to all

segments when one segment detects a

collision.

SPECIFICATIONS AND REQUIREMENTS