Cabletron Systems 9T425-16, 9T427-16, 9T428-16 , The 9T428-16 Module

1 40

2-7

Installation

Lobe Port Pins

Figure 2-5 illustrates the signal assignments for RJ45 lobe port pins.

Figure 2-5. RJ45 Lobe Port Pins – Signal Assignments

The 9T428-16 Module

Table 2-2 lists signal tolerance speciÞcations for the Multimode Fiber Optic cable

used for front panel connections.

The Fiber Optic cable segments have ST connectors. They are connected by

inserting the connector in the port and then turning it to lock down.

The Receive port of one device is connected to the Transmit port of the other

device as shown in Figure 2-6.

Table 2-2. Signal Tolerances for Multimode Fiber Optic Cable

Cable Type Attenuation Maximum Drive Distance

Multimode 50/125

≤ 13.0 dB 2 km (2187.7 yards)

Multimode 62.5/125 µm≤ 16.0 dB 2 km (2187.7 yards)

Multimode 100/140 µm≤ 19.0 dB 2 km (2187.7 yards)

Typical Signal Attenuation Rate: ≤ 1.5 dB/km

Rx-

Tx+

Tx-

Rx+

Cable Shield

Contents

Main Page i Notice Notice ii Notice FCC Notice DOC Notice VCCI Notice DECLARATION OF CONFORMITY Page Contents Page Chapter 1 Introduction Features Introduction 1-2 Figure 1-1. The 9T425-16, 9T427-16, and 9T428-16 SmartSwitch 9000 Modules TOKEN RING Page Related Manuals Getting Help Page Chapter 2 Installation Installing the SmartSwitch 9000 Module Installation 2-2 The Reset Switch Page ! Front Panel Cabling The 9T425-16 and 9T427-16 Modules The 9T428-16 Module Recommended Cable Lengths 2-9 Installation Defaults Chapter 3 Operation TNIB Switching Transparent Switching Source Route and Source Route Translational Switching Spanning Tree Algorithm - IEEE 802.1d System Management Buses SMB-1 Bus SMB-10 Bus System Diagnostic Controller DC/DC Converter INB NIB SecureFast Switch i960 Core Page 4-1 Chapter 4 LANVIEW LEDs 4-2 Receive (RX) STN B (Mode Switch in RIGHT Position) The functions of the INB receive LED are listed in Table 4-2. The functions of the INB transmit LED are listed in Table 4-3. 4-4 The functions of the Token Ring Port receive LEDs are listed in Table 4-4. The functions of the Token Ring Port transmit LEDs are listed in Table 4-5. The functions of the Station Mode LEDs are listed in Table 4-6. Page Page Chapter 5 Specications Safety Service !