Symmetricom SSU-2000e, SDU-2000e User Manual

Download

Page 1

SSU-2000e Synchronization Supply Unit

and the

SDU-2000e Synchronization Distribution Unit

User’s Guide

Revision E – October 2006

Part Number 12713140-002-2

Page 2

Symmetricom, Inc.

2300 Orchard Parkway

San Jose, CA 95131-1017

U.S.A.

http://www.symmetricom.com

All product names, service marks, trademarks, and registered trademarks

used in this document are the property of their respective owners.

Page 3

Table of Contents

Contents

How to Use This Guide

Purpose of This Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Who Should Read This Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Structure of This Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Conventions Used in This Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Warnings, Cautions, Recommendations, and Notes . . . . . . . . . . . . . . . . . . . . . . . . . .16

Related Documents and Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Where to Find Answers to Product and Document Questions. . . . . . . . . . . . . . . . . . . 18

What’s New in this Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Chapter 1 Product Overview

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Typical System Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Timing Signal Generator (TSG) Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Primary Reference Source (PRS) Configuration. . . . . . . . . . . . . . . . . . . . . . . . . 22

SSU-2000e Configured as a Monitor-Only System. . . . . . . . . . . . . . . . . . . . . . . 23

System Architecture. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Input Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Output Section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Clock Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Communications Section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Alarms and Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

SSU-2000e Main Shelf (Chassis) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

SSU-2000e Family of Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

Clock and Communications Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

Input Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Output Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

Communications Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Software Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Software Versions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Basic System Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

Graphical User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

Overview of SSU-2000e Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Synchronization Status Messages (SSMs). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Indicators and Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

SDU-2000e Synchronization Distribution Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Functional Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Expansion Shelf Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Setting the Expansion Shelf Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

Buffered Clocks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 3

Page 4

Table of Contents

SDU Module Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Connector Panel Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Controls and Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

Chapter 2 Installing the SSU-2000e

Unpacking and Inspecting the Shelf. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

Preliminary Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Installation Tools and Materials. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Electromagnetic Interference (EMI) Considerations . . . . . . . . . . . . . . . . . . . . . .59

Ventilation Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

Rack Mounting the SSU-2000e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

Making Ground and Power Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Making Ground Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Making Power Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

Making Communications Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Making EIA-232 Serial Port Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

Changing Communications Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Making Ethernet Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Making Communications Module Connections. . . . . . . . . . . . . . . . . . . . . . . . . . 66

Making Signal Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

Making Input Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Making Output Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70

Terminating SDU-2000e Interface Connections . . . . . . . . . . . . . . . . . . . . . . . . .70

Making Alarm Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Connecting Antennas. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Handling Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73

Installing a Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75

Exchanging a Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Disabling a Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Removing Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77

Installing the SDU-2000e. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Rack Mounting the SDU-2000e. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78

Making Ground Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Making Power Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79

Connecting the Main Shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Setting the Shelf Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Connecting SDU Clock Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82

Installing SDU Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83

Installation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84

SSU-2000e Turn-Up Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85

SDU-2000e Turn-Up Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

SDU-2000e Power Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Normal System Indications During Turn-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

After Turn-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87

4 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 5

Table of Contents

Chapter 3 Provisioning and Operating the SSU-2000e

Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

SSU-2000e Status LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

SSU-2000e Operating Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

Establishing a Connection With the SSU-2000e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

Communicating by Serial Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Communicating by Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92

Overview of the SSU-2000e Security System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Adding An Administrator User . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Adding Users . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96

Setting Security Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

Logging In to the SSU-2000e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102

Logging In with an Expired Password. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Logging Off of the SSU-2000e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Initial Provisioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Provisioning General Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Adding or Enabling a Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

Disabling a Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Removing a Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107

Provisioning GPS Input Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108

Provisioning Other Input Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

Provisioning Output Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111

Saving the Provisioning Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112

Checking Alarm Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113

Factory Default (Basic) Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Changing Factory Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Restoring Factory Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Customizing Other Configuration Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Backing Up and Restoring Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . .115

Backing Up the Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115

Using ICS Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Restoring the Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116

Using ICS Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

Chapter 4 Commissioning the SSU-2000e

Readiness to Test Checklist. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118

Equipment Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119

Commissioning Tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Testing the Ethernet Communications Interface. . . . . . . . . . . . . . . . . . . . . . . . 119

Testing the EIA-232 Ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Testing The Minor Alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Testing the Major Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121

Testing the Critical Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 5

Page 6

Table of Contents

Testing the Reference Signals and Selection. . . . . . . . . . . . . . . . . . . . . . . . . .122

Testing the Clock Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122

Testing the Output Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

Testing the System Stability and Accuracy (Optional) . . . . . . . . . . . . . . . . . . .123

Commissioning Test Data Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124

Commissioning the SDU 2000e. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124

Readiness to Test Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

Equipment Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

Commissioning Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .126

Commissioning Test Data Sheet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

Chapter 5 Maintenance and Troubleshooting

Responding to Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Preventive Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130

Corrective Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .133

Establishing a Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .134

Interpreting Status Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .135

Troubleshooting the SDU-2000e. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

Re-ordering Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

Equipment Return Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

Repacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .139

Contacting Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .140

Chapter 6 Clock Module Reference Data

Stratum 2E Clock Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142

Functional Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .143

Status LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .144

Functional Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

Configuration Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .146

Stratum 3E Clock Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .146

Functional Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .147

Status LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .148

Performance Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .149

Configuration Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150

Type I Clock Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150

Functional Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .151

Status LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .152

Functional Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

Configuration Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .153

6 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 7

Table of Contents

Communications Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .154

Functional Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .156

Status LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .156

Alarm Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158

Configuration Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .159

EIA-232 Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .160

Ethernet Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

Resetting the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .161

Chapter 7 Input Module Reference Data

1-Port and 3-Port E1 Input Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .164

Functional Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164

Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .164

Status LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .170

E1 Input Module Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

Software Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

1-Port and 3-Port DS1 Input Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .173

Functional Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173

Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .174

Status LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .179

Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .181

Software Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181

GPS Input Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182

GPS Input Module Functional Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .182

Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .183

Status LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .184

Configuration Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .185

Composite Clock Input Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185

Functional Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185

Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .186

Status LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .187

Factory Default (Basic) Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188

Chapter 8 Output Module Reference Data

E1 Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190

Functional Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190

Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .191

Status LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .192

Performance Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .193

DS1 Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .194

Functional Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194

Status LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .195

Performance Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .196

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 7

Page 8

Table of Contents

Composite Clock Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .197

Composite Clock Output Module Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . .197

Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .198

Status LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .199

Composite Clock Output Module Specifications. . . . . . . . . . . . . . . . . . . . . . . .200

E1/2048 kHz Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .201

Functional Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201

Provisioning the Signal Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201

Output Squelching. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201

Bypass Clock (CLK-C) Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204

Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .206

E1/2048 kHz Output Module Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . .207

E1/2048 kHz Output Signal Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208

E1/2048 kHz Output Module Software Options. . . . . . . . . . . . . . . . . . . . . . . . .209

2048 kHz Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .209

Functional Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209

Output Squelching. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210

Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .213

Status LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .214

Performance Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .215

RS-422 Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .215

Functional Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

Provisioning Output Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216

Output Squelching. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216

Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .219

Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220

Performance Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .221

Software Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221

Buffer Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222

Status LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .222

Chapter 9 Hardware Configuration Guide

Configuring a Conventional SSU/TSG System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226

Configuring a Primary Reference Source (PRS) System. . . . . . . . . . . . . . . . . . . . . . 226

Configuring a Monitor-Only System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227

SSU-2000e Configuration Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .228

SDU-2000e Configuration Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232

Index

8 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 9

Table of Contents

Figures

1-1 SSU-2000e Synchronization Supply Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

1-2 SSU-2000e in TSG Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

1-3 SSU-2000e Configured as a Primary Reference Source. . . . . . . . . . . . . . . . . . . .22

1-4 SSU-2000e Configured as a Monitor Only System . . . . . . . . . . . . . . . . . . . . . . . .23

1-5 Block Diagram of the SSU-2000e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

1-6 SSU-2000e Module Chassis Slot Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . .32

1-7 SSU-2000e Upper Front Panel Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

1-8 Clock Input Connector Groups. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

1-9 SSU-2000e Input Connector Scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

1-10 SSU-2000e Power Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

1-11 Serial Port Connector Pins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

1-12 SDU-2000e Synchronization Distribution Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

1-13 SDU-2000e Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

1-14 SDU-2000e Expansion Chassis Components . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

1-15 Backup Clock Terminator, Side and Front Views. . . . . . . . . . . . . . . . . . . . . . . . . . 53

1-16 SDU-2000e Connection Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

1-17 Expansion Chassis Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

2-1 Equipment Mounting Cabinet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

2-2 SSU-2000e Power Input Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

2-3 DE9 Connector Detail. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

2-4 Serial Port DTE/DCE Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

2-5 Communications Module Serial Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

2-6 Clock Input Connector Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

2-7 Non-Payload E1 and DS1 Input Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68

2-8 Through Payload E1 and DS1 Input Termination. . . . . . . . . . . . . . . . . . . . . . . . . . 69

2-9 Clock Output Connector Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

2-10 SSU Expansion Terminator (J8). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

2-11 SSU Backup Clock Terminator (J9) Side and Front View . . . . . . . . . . . . . . . . . . . 71

2-12 Alarm Contact Closures and Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . .72

2-13 Equipment Mounting Cabinet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

2-14 SSU-2000e Expansion Terminator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

2-15 Backup Clock Terminator, Side and Front View. . . . . . . . . . . . . . . . . . . . . . . . . . . 81

2-16 Shelf Address Selector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

3-1 Direct Connection Using the Serial Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

5-1 Alarm and Event Status Breakdown. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

6-1 Block Diagram of the Stratum 2E Clock Module . . . . . . . . . . . . . . . . . . . . . . . . .143

6-2 Front Panel of the Stratum 2E Clock Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

6-3 Block Diagram of the Stratum 3E Clock Module . . . . . . . . . . . . . . . . . . . . . . . . .147

6-4 Front Panel of the Stratum 3E Clock Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

6-5 Block Diagram of the Type I Clock Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . .151

6-6 Front Panel of the Type I Clock Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

6-7 Block Diagram of the Communications Module. . . . . . . . . . . . . . . . . . . . . . . . . .156

6-8 Front Panel of the Communications Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 9

Page 10

Table of Contents

7-1 Block Diagram of the 1-Port and 3-Port E1 Input Modules . . . . . . . . . . . . . . . . .165

7-2 Front Panel of the E1 Input Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171

7-3 Block Diagram of the 1-Port and 3-Port DS1 Input Module . . . . . . . . . . . . . . . . . 174

7-4 Front Panel of the DS1 Input Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180

7-5 Block Diagram of the GPS Input Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183

7-6 Front Panel of the GPS Input Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184

7-7 Block Diagram of the Composite Clock Input Module . . . . . . . . . . . . . . . . . . . . . 186

7-8 Front Panel of the Composite Clock Input Module. . . . . . . . . . . . . . . . . . . . . . . . 187

8-1 Block Diagram of the E1 Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191

8-2 Front Panel of the E1 Output Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192

8-3 Block Diagram of the DS1 Output Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194

8-4 Front Panel of the DS1 Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195

8-5 Block Diagram of the Composite Clock Output Module . . . . . . . . . . . . . . . . . . . 198

8-6 Front Panel of the Composite Clock Output Module . . . . . . . . . . . . . . . . . . . . . .199

8-7 Using the Hex Number to Identify Output Ports. . . . . . . . . . . . . . . . . . . . . . . . . . 203

8-8 Block Diagram of the E1/2048 kHz Output Module . . . . . . . . . . . . . . . . . . . . . . . 206

8-9 Front Panel of the E1/2048 kHz Output Module . . . . . . . . . . . . . . . . . . . . . . . . . 207

8-10 Using the Hex Number to Identify Output Ports. . . . . . . . . . . . . . . . . . . . . . . . . . 211

8-11 Block Diagram of the 2048 kHz Output Module. . . . . . . . . . . . . . . . . . . . . . . . . . 213

8-12 Front Panel of the 2048 kHz Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214

8-13 Using the Hex Number to Identify Output Ports. . . . . . . . . . . . . . . . . . . . . . . . . . 217

8-14 Block Diagram of the RS-422 Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . 219

8-15 Front Panel of the RS-422 Output Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .220

8-16 Front Panel of the Buffer Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222

9-1 Timing Sync Generator (TSG) System Configuration . . . . . . . . . . . . . . . . . . . . . 226

9-2 SSU-2000e Configured as PRS System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .227

9-3 SSU-2000e Configured as Monitor-Only System. . . . . . . . . . . . . . . . . . . . . . . . . 227

9-4 SSU-2000e Main Shelf, Front View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .228

9-5 SDU-2000e Expansion Shelf, Front View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .232

10 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 11

Table of Contents

Tables

1-1 Module Slot Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

1-2 Clock Input Connector to Input Module Relationship. . . . . . . . . . . . . . . . . . . . . . . 34

1-3 Clock Output Connector to Output Module Relationship . . . . . . . . . . . . . . . . . . . . 36

1-4 Local and Remote Alarm Connector Pin Assignments . . . . . . . . . . . . . . . . . . . . .37

1-5 Serial Port Connector Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

1-6 Ethernet Connector Pinouts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

1-7 Communications Module Software Versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

1-8 ANSI SSM Quality Level Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

1-9 ITU SSM Quality Level Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

1-10 Expansion Shelf Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

2-1 Communications Port Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

2-2 Ethernet Connector (J3) Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

2-3 Communication Requirements for Control Input and Output. . . . . . . . . . . . . . . . .67

2-4 Input Module Slot to Connector Relationship. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

2-5 Output Module Slot to Connector Relationship . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

2-6 Alarm Contact Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

2-7 Module Slot Addresses in the Main Shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

2-8 Clock Output DE9 Connector Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . 82

2-9 Output Module Slot to Connector Relationship . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

2-10 Module Slot Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

2-11 Power LED Indications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

3-1 Communications Port Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

3-2 Firmware Requirements for Security Features. . . . . . . . . . . . . . . . . . . . . . . . . . . .94

3-3 User Access Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

4-1 SSU-2000e Readiness Checklist. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

4-2 Commissioning Test Data Sheet - SSU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

4-3 SDU-2000e Readiness Checklist. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

4-4 Commissioning Test Data Sheet - SDU. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

5-1 SSU Corrective Action Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

5-2 SDU Corrective Action Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .132

5-3 SSU-2000e Troubleshooting Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

5-4 SDU-2000e Troubleshooting Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

6-1 Stratum 2E Clock Module Status LED Indicators. . . . . . . . . . . . . . . . . . . . . . . . . 144

6-2 Stratum 2E Clock Module Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .145

6-3 Stratum 2E Clock Module Options/Defaults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

6-4 Stratum 3E Clock Module Status LED Indicators. . . . . . . . . . . . . . . . . . . . . . . . . 148

6-5 Stratum 3E Clock Module Performance Specifications . . . . . . . . . . . . . . . . . . . . 149

6-6 Stratum 3E Clock Default Values and Ranges. . . . . . . . . . . . . . . . . . . . . . . . . . . 150

6-7 Type I Clock Module Status LED Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

6-8 Type I Clock Module Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

6-9 Type I Clock Module Options/Defaults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

6-10 Communications Module Status LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . 157

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 11

Page 12

Table of Contents

6-11 Communications Module Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

6-12 Communications Module Configuration Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

7-1 E1 Input Module Alarm Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .167

7-2 E1 Input Module Event Reporting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

7-3 E1 Input Module Status LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171

7-4 E1 Input Module Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

7-5 DS1 Input Module Alarm Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176

7-6 DS1 Input Module Event Reporting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179

7-7 DS1 Input Module Status LED Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .180

7-8 DS1 Input Module Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181

7-9 GPS Input Module Status LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .184

7-10 GPS Input Module Configuration Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185

7-11 Composite Clock Input Module Status LED Indicators. . . . . . . . . . . . . . . . . . . . . 187

7-12 Composite Clock Input Module Configuration Settings . . . . . . . . . . . . . . . . . . . .188

8-1 E1 Output Module Status LED Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192

8-2 E1 Output Module Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 193

8-3 DS1 Output Module Status LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196

8-4 DS1 Output Module Performance Specifications. . . . . . . . . . . . . . . . . . . . . . . . . 196

8-5 Composite Clock Output Module Status LED Indicators . . . . . . . . . . . . . . . . . . . 199

8-6 Composite Clock Output Module Performance Specifications. . . . . . . . . . . . . . .200

8-7 Identifying Failed Ports from the Hex Digit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203

8-8 E1/2048 kHz Output Module Status LED Indicators . . . . . . . . . . . . . . . . . . . . . . 207

8-9 E1/2048 kHz Output Module Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208

8-10 E1/2048 kHz Output Module Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209

8-11 Identifying Failed Ports from the Hex Digit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212

8-12 2048 kHz Output Module Status LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . .214

8-13 2048 kHz Output Module Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

8-14 Identifying Failed Ports from the Hex Digit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218

8-15 RS-422 Output Module Status LED Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . .220

8-16 RS-422 Output Module Performance Specifications . . . . . . . . . . . . . . . . . . . . . .221

8-17 RS-422 Output Module Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .221

8-18 Buffer Module Status LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .223

9-1 SSU-2000e System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .229

9-2 SDU-2000e System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233

12 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 13

How to Use This Guide

This section describes the format, layout, and purpose of this guide.

In This Preface

 Purpose of This Guide  Who Should Read This Guide  Structure of This Guide  Conventions Used in This Guide  Warnings, Cautions, Recommendations, and Notes  Related Documents and Information  Where to Find Answers to Product and Document Questions  What’s New in this Guide

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 13

Page 14

How to Use This Guide

Purpose of This Guide

The SSU-2000e User’s Guide describes the procedures for unpacking, installing, using, maintaining, and troubleshooting the Symmetricom SSU-2000e Synchronization Supply Unit (SSU-2000e).

Who Should Read This Guide

Chapter 1, Product Overview, is written for non-technical audiences who need

general information about the product. Chapter 2, Installing the SSU-2000e, and subsequent chapters contain technical information about the product. Other chapters describe installation, maintenance, and configuration instructions or details primarily intended for qualified maintenance personnel.

This User’s Guide is designed for the following categories of users:

 Systems Engineers – Chapter 1 provides an overview of the SSU-2000e.

Cross-references in this chapter direct you to detailed system information in other chapters as appropriate.

 Installation Engineers – Chapter 2 through Chapter 9 provide detailed

information and procedures to ensure proper installation, turn-up, operation, configuration, and testing of the SSU-2000e.

 Maintenance Engineers – Chapter 5 provides preventive and corrective

maintenance guidelines, as well as procedures for diagnosing and troubleshooting fault indications and alarms.

While Chapter 1 is written for non-technical audiences who need information about the SSU-2000e system, others, such as Chapter 2 through Chapter 9 contain detailed information and instructions which are intended to be performed by qualified personnel only.

Structure of This Guide

This guide contains the following sections:

Chapter, Title

Chapter 1, Product Overview

Provides an overview of the product, describes the major hardware and software features, and list s the system specifications.

Description

Chapter 2, Installing the SSU-2000e

14 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Contains procedures for unpacking and installing the product, and for powering up the unit.

Page 15

How to Use This Guide

Chapter, Title

Chapter 3, Provisioning and Operating the SSU-2000e

Chapter 4, Commissioning the SSU-2000e

Chapter 5, Maintenance and Troubleshooting

Chapter 6, Clock Module Reference Data

Chapter 7, Input Module Reference Data

Chapter 8, Output Module Reference Data

Chapter 9, Hardware Configuration Guide

Index Provides references to individual topics within this gu ide.

Describes SSU-2000e after installing the unit.

Provides checklist-based commission in g tes ts that shoul d be performed after completing turn-up and software configuration to ensure the system is ready for normal operation.

Contains preventive and corrective maintenance, and troubleshooting procedures for the product.

Provides detailed information on the Communications module and the various Clock modules available for use in the SSU-2000e.

Contains detailed information on the Input modules available for use in the SSU-2000e.

Describes the Output modules available for use in the SSU-2 000e and in the SDU-2000e.

Describes how to configure the SSU-2000e in several m odes, and lists part number for shelves, modules, and accessories.

the ICS and TL1 commands required to provision the

Description

Conventions Used in This Guide

This guide uses the following conventions:

 Acronyms and Abbreviations – Terms are spelled o ut the first time they appear

in text. Thereafter, only the acronym or abbreviation is used.

 Revision Control – The title page lists the printing date and versions of the

product this guide describes.

 Typographical Conventions – This guide uses the typographical conventions

described in the table below.

When text appears

this way...

SSU-2000e User’s Guide The title of a document. SSU

CRITICAL IOC1

Select File, Open... Click the Open option on the File menu.

An operating mode, alarm state, status, or chassis label.

... it means:

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 15

Page 16

How to Use This Guide

When text appears

this way...

Press Enter Press ;

SSU Username:

PING STATUS

A re-timing application A word or term being emphasized. Symmetricom does not

recommend...

A named keyboard key. The key name is shown as it appears on the keyboard.

An explanation of the key’s acronym or function immediately follows the first reference to the key, if required.

Text in a source file or a system prompt or other text that appears on a screen.

A command you enter at a system prompt or text you enter in response to a program prompt. You must enter commands for case-sensitive operating systems exactly as shown.

A word or term given special emphasis.

... it means:

Warnings, Cautions, Recommendations, and Notes

Warnings, Cautions, Recommendations, and Notes attract attention to essential or critical information in this guide. The types of information included in each are explained in the following examples.

Warning: To avoid serious personal injury or death, do not disregard warnings. All warnings use this symbol. Warnings are installation, operation, or maintenance procedures, practices, or statements, that if not strictly observed, may result in serious personal injury or even death.

Caution: To avoid personal injury, do not disregard cautions. All cautions use this symbol. Cautions are installation, operation, or maintenance procedures, practices, conditions, or statements, that if not strictly observed, may result in damage to, or destruction of, the equipment. Cautions are also used to indicate a long-term health hazard.

16 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 17

How to Use This Guide

ESD Caution: To avoid personal injury and electrostatic discharge (ESD) damage to equipment, do not disregar d ESD cautions. All ESD cautions use this symbol. ESD cautions are installation, operation, or maintenance procedures, practices, conditions, or statements that if not strictly observed, may result in possible personal injury, electrostatic discharge damage to, or destruction of, static-sensitive components of the equipment.

Electrical Shock Caution: To avoid electrical shock and possible personal injury, do not disregard electrical shock cautions. All electrical shock cautions use this symbol. Electrical shock cautions are practices, procedures, or statements, that if not strictly observed, may result in possible personal injury, electrical shock damage to, or destruction of components of the equipment.

Recommendation: All recommendations use this symbol. Recommendations indicate manufacturer-tested methods or known functionality. Recommendations contain installation, operation, or maintenance procedures, practices, conditions, or statements, that provide important information for optimum performance results.

Note: All notes use this symbol. Notes contain installation, opera tion, or maintenance procedures, practices, conditions, or statements, that alert you to important information, which may make your task easier or increase your understanding.

Where to Find Answers to Product and Document Questions

For additional information about the products described in this guide, please cont act your Symmetricom representative or your local sales office. You can also cont act us on the web at www.symmetricom.com.

What’s New in this Guide

Revision E of this guide contains the following new information:

 Information in the previous version’s appendices are moved to a new document,

the SSU-2000e Technical Reference (12713140-003-2), and cross-references in this book are updated.

 Added information on new security information to Overview of the SSU-2000e

Security System, on page 93.

 Added new user and security procedures in Adding Users, on page 96 and

Setting Security Parameters, on page 98.

 Revised the procedure for backing up and restoring configuration parameters in

Backing Up the Configuration, on page 115 and Restoring the Configuration, on

page 116.

18 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 19

Chapter 1 Product Overview

This chapter describes the SSU-2000e and provides a theory of operation for the unit. The SDU-2000e expansion shelf is also introduced and described.

In This Chapter

 Overview  Typical System Configurations  System Architecture  System Components  Communications Protocol  Overview of SSU-2000e Operation  Indicators and Controls  SDU-2000e Synchronization Distribution Unit

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 19

Page 20

Chapter 1 Product Overview

Overview

The SSU-2000e Synchronization Supply Unit, shown in Figure 1-1, provides a Stratum 1 network synchronization solution for central office (CO), end office, customer premises equipment (CPE) sites, controlled equipment vaults (CEV) and telecommunications and data communications network opera tions. The SSU-2000e family of products consists of:

 SSU-2000e Synchronization Supply Unit  SSU-2000e family of modules  SDU-2000e Expansion Shelf (up to four units), shown in Figure 1-12  Various mounting accessories, cabling accessories and other accessories as

described in the SSU-2000e Technical Reference

Figure 1-1. SSU-2000e Synchronization Supply Unit

20 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 21

Chapter 1 Product Overview

Typical System Configurations

The SSU-2000e Synchronization Supply Unit (SSU-2000e) is a high-performance Synchronization Status Messaging (SSM)-compliant Timing Signal Generator (TSG) or Synchronization Supply Unit (SSU) that provides network synchronization signals for the telephone and telecommunications industry. The SSU-2000e features an integral front-access input/output (I/O) adapter panel for ease of access, connections, and maintenance.

The SSU-2000e conforms to specifications for International, European and North American applications as a Primary Reference Source (PRS), Synchronization Supply Unit, and Timing Signal Generator. The SSU-2000e allows for the integration of a variety of synchronization reference schemes including GPS and land line DS1/E1. As a slave clock, the SSU-2000e meets or exceeds performance requirements outlined in Telcordia Technologies (formerly Bellcore) ITU-T G.812 Stratum 2 and ETSI Type II Transit Node clocks.

The SSU-2000e is designed to comply with the application flexibility and redundancy concepts introduced in Telcordia Technologies GR-2830. A selection of hot-swappable modules and powerful software allow users to easily reconfigure, upgrade, or expand the SSU-2000e to meet a variety of telecommunications synchronization application requirements. The SSU-2000e fully supports Synchronization S tatus Messaging as defined by ITU, ETSI, and ANSI requirement s in accordance with Telcordia Technologies.

The SSU-2000e is fully user-configurable and managable through the use of a software interface. Modules can be inserted into or removed from the SSU-2000e while the system is operational without any degradation of output signals. Each module supports the local and remote management of critical, major and minor alarms. Output modules and clock modules can be configured in redundant pairs, further increasing system availability.

The SSU-2000e has extensive event detection, reporting, alarming, and storage capabilities that permit monitoring of the system from external sites. Events are defined as changes in conditions within the unit, or at the interfaces of the unit, which may indicate abnormal operation or a change in the unit’s operational st atus. For example, an event may be a parameter which exceeds a settable threshold. Most events can be assigned by the user to one of the following modes: IGNORE, REPORT, MINOR, MAJOR, or CRITICAL.

Typical System Configurations

The modular design of the SSU-2000e permits a great deal of flexibility in configuring the system components for a variety of applications. Three of the more common configurations include:

 Time Signal Generator (TSG) configuration  Primary Reference Source (PRS) configuration  Monitor-only configuration

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 21

Page 22

Chapter 1 Product Overview

Typical System Configurations

Timing Signal Generator (TSG) Configuration

The Timing Signal Generator (TSG) configuration shown in Figure 1-2 allows for input of external references to which the Clock modules are phase and frequency locked. This configuration allows for monitoring of several inputs, and for synchronization of output signals.

Figure 1-2. SSU-2000e in TSG Configuration

Primary Reference Source (PRS) Configuration

In a Primary Reference Source (PRS) configuration (Figure 1-3), the SSU-2000e meets the specifications defined for ETSI Type II Transit Node Clocks in American National Standards Institute (ANSI) T1.101-1999. ANSI defines a Primary Reference Source as “equipment that provides a timing signal whose long term

accuracy is maintained at 1 x 10 Coordinated Time (UTC), and whose timing signal may be used as the basis of reference for the control of other clocks within a network”. If standard Input modules are installed in the remaining input slots, this configuration also allows for monitoring of up to 24 external signals, such as DS1, E1, Composite Clock, and various clock frequencies. Time-of-day functionality is available through an Ethernet port employing NTP.

-11

or better, with verification to Universal

Figure 1-3. SSU-2000e Configured as a Primary Reference Source

22 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 23

Chapter 1 Product Overview

System Architecture

SSU-2000e Configured as a Monitor-Only System

The SSU-2000e can also be configured as a monitor-only system (Figure 1-4) in which one of the inputs is designated as the reference, and a clock module is locked directly to this signal. The remaining input signals are then compared to the phase-locked oscillators (and indirectly to the designated input reference).

The SSU-2000e continuously monitors incoming timing signal integrity. The operator defines input acceptance criteria and sets parameters for alarming. If the incoming signal is acceptable (within the performance limits set by the operator), the SSU-2000e phase-locks to the signal on a priority basis.

Figure 1-4. SSU-2000e Configured as a Monitor Only System

System Architecture

The SSU-2000e system is a Timing Signal Generator that controls, monitors, generates, and distributes network synchronization signals. The I/O signals can be DS1, E1, Composite Clock (CC), sinusoids, or square waves. The SSU-2000e continuously monitors incoming timing signal integrity. The operator defines input acceptance criteria and sets parameters for alarming. If a reference signal is acceptable (within the performance limits set by an operator), the SSU-2000e frequency-locks to the signal on a priority basis. System holdover and filtering performance is dependent on the quality of oscillators used in the SSU-2000e’s internal clock modules (Stratum 2E or Stratum 3E).

A selection of hot-swappable modules and system software allow users to easily configure, upgrade, or expand the SSU-2000e system to meet a variety of telecommunications synchronization application requirements. Modules can be inserted or removed from the SSU-2000e while the system is operational without degradation of output signals. Each module supports the management of critical, major, and minor alarms. Output modules and clock modules can be configured in redundant pairs for increased reliability.

A simplified system block diagram for the SSU-2000e is shown in Figure 1-5.

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 23

Page 24

Chapter 1 Product Overview

System Architecture

Figure 1-5. Block Diagram of the SSU-2000e

As indicated in Figure 1-5, the SSU-2000e consists of four major sections:

 Input section  Clock section  Output section  Communications section

Input Section

The input section consists of one or more (maximum of three) Input modules that are connected to reference signals and are tested for signal integrity. The Input modules are described in Chapter 7, Input Module Reference Data. You provision each input using the INPUT and REF commands or the SET-PRMTR-INPUT and SET-INPUT-REF commands.

24 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 25

Chapter 1 Product Overview

System Architecture

The Input modules make phase measurements between the input signal and the clock oscillator(s). From these phase measurements, the Input modules compute frequency offset and wander of the input signals. Wander is reported in terms of Maximum Time Interval Error (MTIE) and Time Deviation (TDEV). The data is then stored for use in the SSU-2000e and reported through the Communications module. You can install one or two GPS input modules that use the satellite-based Global Positioning System signals as a synchronization reference. The input signal types supported are:

 DS1/Clock (unframed)  E1/Clock (unframed)  GPS  Composite Clock

Selecting the Input

Many factors influence which input reference the SSU-2000e uses:

 Priority  PQL/SSM  Switching mode  User-assigned Input St ate  Active alarms on an input

You can provision the SSU-2000e to automatically select the highest-quality input signal, or you can manually select the input signal you want to use. Two factors determine the quality of the input: the user-defined Priority level, and the PQL/ SSM. These factors are used to determine which input is used, and what happens if that input becomes disqualified.

Priority Level

You can assign a Priority level to each input; this value helps determine which inp ut is used as the system reference. The range is 0 to 10; the lower the Priority level, the higher the priority. Use the TL1 command SET-PRMTR-INPUT or the ICS command INPUT to provision these parameters. See Setting the Input Selection

Mode, on page 26, for details on using the Priority level.

SSMs and Quality Level

Synchronization Status Messages (SSMs) may be included in the bit stream of the incoming signal to indicate its quality level. To read the incoming SSM, you must provision the input to read the SSM; for E1 signals, you must provision the bit position of the incoming SSM. Use the TL1 command SET-PRMTR-INPUT or the ICS command INPUT to provision these parameters.

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 25

Page 26

Chapter 1 Product Overview

System Architecture

If the incoming signal does not include SSMs, or if you disable them, then you can provision the Quality Level to an appropriate value. The PQL value is used in the same manner as the incoming SSM to determine which input is used when the active input is disqualified. SSMs are described in more detail in Synchronization

Status Messages (SSMs), on page 47.

Setting the Reference Switching Mode

There are two reference selection modes available: Revertive and Non-revertive. In the Revertive mode, if an input used as the system reference is disqualified (for any reason), the reference switches to the next-highest input and reverts to the initial input when that input is re-qualified. In this mode, the reference switches two times: once when the disqualifying event occurs, and again when the initial input is re-qualified. In the Non-revertive mode, the system reference switches to the next-highest input but does not revert to the initial input when the initial input is re-qualified. The system reference switches only once when the disqualifying event occurs.

The ICS command REF and the TL1 command SET-INPUT-REF allows you to set the reference switching mode to AutoReturn, AutoSwitch, or OFF. The AutoReturn mode is Revertive, and enables automatic switching with automatic return to the input with the highest Priority or PQL level. The AutoSwitch mode is Non-revertive; the reference automatically switches to the next-highest input on failure of the selected input. When set to OFF, only manual switching is allowed. If the selected reference input is disqualified for any reason, the clock enters the Holdover mode and you must correct the fault and re-provision the reference input.

Setting the Input Selection Mode

The ICS command REF and the TL1 command SET-INPUT-REF determine what type of reference input selection and reference switching is used. You can set the input selection to either Priority or PQL. The reference switching mode is either Autoreturn, Autoswitch, or No switching.

After you select the reference switching mode, the Input module reads and processes the Priority level and PQL value to determine the traceability of inputs. This traceability information is then used by the Clock modules in selecting a reference signal and for embedding the SSM into the outputs.

If you select Priority mode, the SSU-2000e selects the input reference with the highest user-defined Priority setting; if all inputs have the same Priority level, then the input with the highest PQL (quality level, SSM) is used.

If you select PQL mode, the SSU-2000e select s the input reference with the highest assigned PQL level or associated SSM; if all inputs have the same PQL/SSM value , then the input with the highest Priority levels is used. In either case, error conditions such as Loss of Signal (LOS), Out of Frame (OOF), MTIE, TDEV, and Phase performance data collected at the input s are used to disqualify input s (prevent inpu t selection) based on user defined thresholds.

26 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 27

Chapter 1 Product Overview

System Architecture

In either mode, when the Priority and PQL values are equal for each input, the physical location of the Input module determines the priority for selecting the input reference. Port 1 on the Input module in the leftmost slot has the highest priority; the priority decreases to port 1 on the Input module in the rightmost slot. Port 2 on the module in the leftmost slot has the next lower priority, decreasing to Port 2 on the Input module in the rightmost slot. Port 3 on the module in the leftmost slot has the next lower priority, and Port 3 on the module in the rightmost slot has the lowest priority.

If the Input module is configured for provisioned mode, it reports the user-assigned SSM. If it is configured for automatic mode, the Input module uses the most recent valid SSM. If a valid SSM is not received, the module uses the user-assigned SSM.

Setting an Input Alarm Strategy

You can provision the SSU-2000e to elevate input alarms to the next higher level after a specified amount of time. You can also specify that an alarm clears automatically after a specified period of time without the alarm condition. For more information on alarms, see Alarms and Events, on page 29.

Bypass Clock (Clock C)

In the event that both Clock modules fail, an input connected to a DS1, E1, or Composite Clock Input module can serve as the system reference. The input must be a valid reference, and it must have a Priority setting. When the Bypass clock is the active reference, then the output signal is not filtered and any wander or jitter on the input signal appears on the outputs. The Bypass clock is intended only for short-term use; you should resolve the failures on the Clock modules as quickly as possible.

Output Section

The output section is implemented with one or more Output modules (up to 6, in the main chassis and up to 46 Output modules in a fully expanded system with four SDU-2000e expansion chassis). Each Output module type provides 20 independent or 10 paired output synchronization signals. Output modules are available to support the following formats:

 DS1, SF (D4) and ESF  E1  2048 kHz  Composite Clock (CC) (64/8 kHz)  Other typical clock frequencies

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 27

Page 28

Chapter 1 Product Overview

System Architecture

Clock Section

The clock section consists of one or two Clock modules that provide the internal reference signals for generating TSG output timing signals. The primary Clock module (Clock A) is configured as the master clock and is normally a higher stratum level than the back-up clock (Clock B). If a problem occurs in Clock A, the control is automatically passed to the back-up clock module (Clock B). The frequency of each clock is locked to a valid reference input signal (one that is free from input faults while meeting acceptable frequency and MTIE specifications).

The SSU-2000e controls clock frequency by adjusting the control value of the Direct Digital Synthesis (DDS) function in each Clock module. The adjustments are processor-controlled and based on measurements performed and computed in the input module(s). Internal clock modules may be Stratum 2E, Stratum 3E, and Type I. Outputs are maintained by the active input reference signal if both clocks should ever fail or be removed from the system.

Communications Section

The Communications section consists of one Communications module, which contains hardware and software that allows the user to configure, monitor, and control the SSU-2000e system and generate local and remote alarms when fault conditions are detected. The SSU-2000e can continue to function seamlessly without the Communications module (Clock modules assume the system controller function), but all communications and alarm reporting functions are interrupted.

The master controller function for the SSU-2000e can reside in either the Communications module or in either of the Clock modules. The priority of the selection of the module that will provide the master controller function rests with the Communications module, Clock A, and Clock B, in that order. In the event of removal of the module designated as the master controller, that function automatically and seamlessly switches to the next module in priority order.

The Communications module communicates with the other modules in the SSU-2000e to read configuration data, set operational parameters, and determine what type of modules are installed. When a module is replaced, the controller loads the correct operational parameters into the replacement module.

The Communications module is installed in slot A2 and provides an interface between the user and the SSU-2000e system. This interface allows the user to display and control much of the activity in the SSU-2000e system and within the optional SDU-2000e expansion system. The Communications module supports three serial ports and one Ethernet port, and allows communication over each of them independently in one of several possible modes (ICS, TL1, SNMP, or packet).

The software in the Communications module allows for on-site reprogramming of the flash ROM and all programmable logic devices. The software on all other module types installed in the SSU-2000e system can be updated by downloading it through the Communications module.

28 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 29

Chapter 1 Product Overview

System Architecture

When the Communications module is installed, it performs an initial software verification test to verify operation. If the module is being installed in the SSU-2000e with power already applied and with other modules installed, the Communications module reads the configuration of the modules in the SSU-2000e and the modules in all installed SDU-2000e expansion shelves. This information is saved in nonvolatile memory on the Communications module. If power is applied to the SSU-2000e after the Communications module is installed, it initializes before any of the other modules and provides configuration information to the individual modules.

Note: The clock modules also store configuration information and can download this information to the various modules, if the Communications module is not installed in the system.

Alarms and Events

The SSU-2000e has extensive event detection, reporting, and alarm gen eration and storage capabilities that permit monitoring of the system from external sites.

Alarms are conditions within the unit or at the interfaces of the unit which may indicate abnormal operation or a change in the unit’s operational status. For example, an alarm may be generated when a parameter exceeds a user-settable threshold. Most alarms can be assigned by the user to one of the following modes: IGNORE, REPORT, MINOR, MAJOR, or CRITICAL.

All Alarms detected in the SSU-2000e system are reported by three methods, including:

 Display on the module LEDs  Relay contact closures on the back of the SSU-2000e chassis  Messages transmitted on all communications ports

All Alarm indications clear when the condition(s) that caused them no longer exist. In a case where a module in alarm is unplugged from the system, the ICS command CONFIG xAy REMOVE clears the module’s active alarms. In addition, normal operating status is indicated by green LEDs on the modules.

Events are conditions within the unit, or at the interfaces of the unit, which may indicate abnormal operation or a change in the unit’s operational status. Recurring events may be escalated to alarm status and may require action by the user. Conversely, alarms may be de-escalated and corrected automatically. See the SSU-2000e Technical Reference for details.

Although every alarm is considered to be an event, not every event is an alarm. For example, a login is recorded as an event but is not considered to be an alarm. In this case, no action is required by the user.

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 29

Page 30

Chapter 1 Product Overview

System Architecture

Ignore Mode

IGNORE means that appropriate information on the event is transmitted on all of the communications ports when the event occurs, and on demand, but no alarm is generated. For example, the status of the SSM at each input port and at the output ports is reported when it changes and when the user sends an inquiry but no alarm is generated.

Report Mode

The REPORT mode option is used to report alarm indications only. An ALARM command is available in the SSU-2000e firmware that allows a user to

view the current status of alarm indications on the unit and set alarm delay intervals and activation levels. Only active alarm indications are displayed unless an option is specified.

The DELAY option sets the length of time in seconds an alarm must be active before generating a hardware indication. This option also allows the user to set the level of any alarms:

 IGNORE – ignore any alarm indication  REPORT – report only alarm indications  MINOR – sets alarm level to MINOR  MAJOR – sets alarm level to MAJOR  CRITICAL – sets alarm level to CRITICAL

See the SSU-2000e Technical Reference for details on the DELAY option.

Alarm Mode

The user sets the alarm to one of three levels of alarm severity: MINOR, MAJOR o r CRITICAL. In general, events that are classified as ALARMS are those for which user or Craft intervention is required. MINOR and MAJOR alarms can be elevated automatically to the next higher level after a user-settable time period.

For Input Ports to be disqualified as possible system references, the alarm level must be Major (it can elevate from a Minor) or Critical. Additionally, the system can select a redundant component when the currently selected module/component indicates a Major or Critical Alarm, for example a Clock Module Alarm set to Major allows the system to select the Secondary Clock Module.

The unit is capable of generating reports to include: local oscillator being switched, log in/out, restart, board removed/inserted, events cleared, PLL loop control, user image clear/set, phase samples, frequency control, and a keep-alive output every 5 minutes. See the SSU-2000e Technical Reference for information on commands.

30 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 31

Alarms and all events are reported over the communication ports and contain details of the event in a single message including the time of the event. All ALARM indications clear when the conditions that caused them no longer exist. In addition, normal operating status is indicated by green LEDs on the front panel of modules.

Fail Mode (Critical)

In the FAIL mode, the SSU-2000e removes the failed module from service or usability to prevent interruption of the system. For example, a FAIL event detected in Clock A causes a switchover from Clock A to Clock B, effectively removing Clock A from the system. The FAIL event is reported on all communications ports and an alarm is generated.

System Components

The fully expanded SSU-2000e system contains the f ollowing physical component s:

 SSU Main Chassis populated with various combinations of Clock, Input, Output

and Communications modules

Chapter 1 Product Overview

System Components

 Up to four SDU-2000e Expansion shelves containing buffer and output modules

Note: For additional information about each of the module types, see Chapter 6, Clock Module Reference Data, Chapter 7, Input

Module Reference Data, and Chapter 8, Output Module Reference Data. Also see Chapter 9, Hardware Configuration Guide for component part numbers and guidelines for configuring

a new system.

SSU-2000e Main Shelf (Chassis)

The SSU-2000e main shelf (shown in Figure 1-6) contains a metal chassis and a motherboard with provisions for supporting up to 12 hot-swappable modules. Filler panels are available for use in chassis that are not fully populated.

Module Assignments

All SSU-2000e modules are equipped with card ejectors and plug in from the front of the chassis. Each module is secured in the chassis with captive fasteners. The module assignments for the SSU-2000e main chassis are listed in Table 1-1 and shown in Figure 1-6.

Table 1-1. Module Slot Locations

Slot Module

A1 Clock Module A A2 Communications Module

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 31

Page 32

Chapter 1 Product Overview

System Components

Table 1-1. Module Slot Locations (Continued)

Slot Module

A3-A5 Input Module A6-A11 Output Module A12 Clock Module B

Figure 1-6. SSU-2000e Module Chassis Slot Assignments

As indicated in Figure 1-6, the SSU-2000e modules are assigned slots A1 through A12, numbered left to right as viewed from the front of the chassis. The first or left-most slot, A1, is assigned to the primary Clock module (Clock A). Slot A2 is assigned to the Communications module and slots A3 through A11 are assigned to various combinations of Input modules and Output modules. Slot A12 is reserved for the B Clock module.

Main Shelf Connections

All connections to and from the SSU-2000e are made on the upper front panel of the SSU-2000e main shelf, as shown in Figure 1-7.

32 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 33

Chapter 1 Product Overview

System Components

Figure 1-7. SSU-2000e Upper Front Panel Connections

The SSU-2000e main shelf contains the following connection features:

 Three groups of Clock input connectors – each group of nine Clock input

connectors (9-pin, Micro-D female) is associated with a specific Input module slot.

 Three groups of 20 output connectors – each group of 20 outputs connect

through internal summing circuits to two Output modules. In the event of the failure of one module, the second module continues supplying output signals. The first module can be electrically disconnected from the output circuitry with relays activated by the software.

 Dual set of power terminals and dual set of grounding lugs – for connecting

external power and grounding to the SSU-2000e system.

 Three communications ports – two serial port connections, Serial Port-A and

Serial Port-B, and one RJ-45 ethernet connector (10-base-T). Another serial communication port, Serial Port-C, is available on the front of the Communications module.

 DTE/DCE switch – this slide switch (S1) allows the user to select either data

terminal equipment (DTE – default, PC connection) or data communication equipment (DCE – modem connection) type of serial port interface for SERIAL PORT-A and SERIAL PORT-B. The right position is labeled A and the left position is labeled B.

 Local and remote alarm connectors – each 15-pin Micro-D female connector

is electrically connected to the relays on the Communications module.

 Two antenna connectors – for attaching radio receiver antennas.

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 33

Page 34

Chapter 1 Product Overview

System Components

 SDU-2000e optional interface connector – up to four expansion shelf can be

connected in daisy-chain fashion to an SSU-2000e. A termination plug must be installed on this connector if not using the output signal expansion shelf system.

 SDU Backup Clock (D-Clock) connector – supplies a backup clock to any

attached expansion shelf.

Clock Input Connectors

The upper half of the SSU-2000e contains three groups of nine Clock input connectors, as shown in Figure 1-8. Each group of nine connectors includes three monitor connectors, three load connectors and three input connectors. Connections for Input Group 1 are made in connectors J10 through J18. Connections for Input Group 2 are made in connectors J19 through J27, and the connections for Input Group 3 are made in connectors J28 through J36.

Figure 1-8. Clock Input Connector Groups

The three input groups map directly to the Input modules installed in slots A3 through A5 as listed in Table 1-2.

Table 1-2. Clock Input Connector to Input Module Relationship

Slot

Label

(Name)

INPUT-1 A3 1 J10 J11 J12

34 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Plug-in Module

Slot

Module

Connector Reference Description

Input

Port

Monitor Load Input

2J13 J14J15 3J16 J17J16

Page 35

Table 1-2. Clock Input Connector to Input Module Relationship (Continued)

Chapter 1 Product Overview

System Components

Slot

Label

(Name)

INPUT-2 A4 1 J19 J20 J21

INPUT-3 A5 1 J28 J29 J30

Plug-in Module

Slot

Module

Input

Port

2J22 J23J24 3J25 J26J27

2J31 J32J33 3J34 J35J36

Connector Reference Description

Monitor Load Input

The Load and Input connectors are cross-wired as four wire, east-west connections. The Input connectors are used to connect the clock reference inputs to the associated input ports on the installed Input modules. Termination plugs are available to install in the load connectors if the reference signal is to be terminated.

The Monitor connectors are connected as 20 dB monitors to each attached clock reference input signal, as shown in Figure 1-9.

Figure 1-9. SSU-2000e Input Connector Scheme

Output Clock Connectors

The SSU-2000e connector panel contains three group s of 20 summed ou tput clock connectors. The groups are labeled OUTPUT GROUP 1 that are installed in A6 and A7, OUTPUT GROUP 2 that are installed in A8 and A9, and OUTPUT GROUP 3 that are installed in A10 and A11. See Table 1-3 for additional information.

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 35

Page 36

Chapter 1 Product Overview

System Components

The signal outputs from each pair of Output modules are summed internal to the unit and all outputs are connected to the output connectors through software-controlled relays in the Output modules. If one of a redundant p air of Clock modules fails, the software can electrically disconnect the faulty module without interrupting the clock outputs.

Table 1-3. Clock Output Connector to Output Module Relationship

Slot Label

(Name)

OUTPUT-1 A6 1 J40 (1) through J59 (20) OUTPUT-2 A7 OUTPUT-3 A8 2 J60 (1) through J79 (20) OUTPUT-4 A9 OUTPUT-5 A10 3 J80 (1) through J99 (20) OUTPUT-6 A11

Plug-in

Module Slot

Group

Output Connector

(Module Port)

Reference Description

Alarm Closure Contacts

The SSU-2000e shelf has two filtered DA15P male connectors that are electrically tied to the alarm relay contacts on the Communications module. One connector (labeled J1) is designated the local alarm connector and the second connector (labeled J2) is the remote alarm connector.

Each connector provides connections for normally open (NO), common or wiper (COM) and normally closed (NC) for each of the following alarm categories:

 CRITICAL – Indicates an immediate, service-affecting condition that requires

immediate user intervention, such as loss of the Communications module, loss of input power to the shelf, and so forth.

When a critical alarm condition is detected, the CRITICAL ALARM relay is activated (the alarm condition) and the CRITICAL ALARM indicator (LED) on the front of the Communications module turns red unless both power inputs are interrupted. In this case the unit is not running.

 MAJOR – Indicates a condition that may require immediate user intervention.

When a major alarm condition is detected, the major alarm relay at the back of the SSU-2000e is activated and the MAJOR ALARM indicator (LED) on the front of the Communications module turns red.

 MINOR – Indicates the unit performance may be degrading.

The minor alarm relay is activated and the MINOR ALARM indicator (LED) turns on.

36 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 37

Chapter 1 Product Overview

System Components

Table 1-4 lists the local and remote alarm connector pin assignments.

Table 1-4. Local and Remote Alarm Connector Pin Assignments

Signal Pin

MINOR MINOR MINOR MAJOR MAJOR MAJOR CRITICAL CRITICAL CRITICAL Frame Ground 10 Frame Ground 11

Frame Ground 13 Not Used 3 Not Used 6

– Normally Open Contact – Wiper Contact – Normally Closed Contact

7 15 8 4 12 5 1 9 2

Note: In an alarm condition or loss of DC power, the contact between the NO and COM closes and the contact between the NC and COM opens.

Main Shelf Power Connections

The main shelf accepts redundant –48/60 VDC power inputs from external supplies and makes these inputs available to the modules through the motherboard connectors.

There is no power ON/OFF switch on the SSU-2000e because power to the shelf is controlled by external power supplies.

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 37

Page 38

Chapter 1 Product Overview

System Components

Figure 1-10. SSU-2000e Power Connections

All power supplies for the SSU-2000e are implemented on the individual modules which increases system availability by eliminating a single point of failure in the power supply area. On each plug-in module, diodes combine the two power sources and provide protection from reversal of the power connections on the shelf (+ and – reversed).

The SSU-2000e operates in an integrated ground environment. Two frame ground connections are provided at opposite corners of the front panel on M5 studs. One banana jack receptacle is provided on each rack mounting ear.

Antenna Connectors

The SSU-2000e contains two N-type connectors labeled ANTENNA A (J6) and ANTENNA B (J7) to connect two external radio antennas used with the optional GPS Input modules. These two connectors are wired into I/O slots A3 and A5, respectively. A variety of GPS antennas are available as accessories for the SSU-2000e as described in the SSU-2000e Technical Reference.

38 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 39

Chapter 1 Product Overview

System Components

Main Shelf Communications Ports

The SSU-2000e main shelf contains four communication ports including:



Tw o EIA-232 communication ports (Port A, J4; Port B, J5) on the upper front panel

 One shielded RJ-45 ethernet connector J3 (10baseT) on the upper front panel for

network connection

 One EIA-232 port on the face of the Communications module (Local Port)

The user interface provides various levels of password-protected access for configuration and detailed performance monitoring and diagnostics. Use either the ASCII interactive command set or the TL1 user interface to configure and view detailed performance monitoring, see the SSU-2000e Technical Reference. The operator assigns an interface type to the remote EIA-232 ports, either interactive or TL1. When assigned, this information is retained in NVRAM. The Local port on the Communications module is always in Interactive mode when the module restarts.

Serial Port Pinouts

Figure 1-11 shows the EIA-232 connector pin assignments for the serial ports.

Figure 1-11. Serial Port Connector Pins

Table 1-5 describes the EIA-232 connector pin assignments for the serial ports.

Table 1-5. Serial Port Connector Pin Assignments

Signal Pin

DCD (Data Carrier Detect) Control Line 1 RXD (Received Data) 2 TXD (Transmitted Data) 3 DTR (Data Terminal Ready Control Line) 4 Ground 5 DSR (Data Set Ready Control Line) 6 RTS (Request to Send Control Line 7 CTS (Clear to Send Control Line) 8 RI (Ring Indicator Control Line) 9

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 39

Page 40

Chapter 1 Product Overview

System Components

Ethernet Connector Pinouts

The Ethernet (10baseT) pinouts are provided in Table 1-6.

Table 1-6. Ethernet Connector Pinouts

TX+ (Positive Side of Transmitted Data) 1 TX– (Negative Side of Transmitted Data) 2 RX+ (Positive Side of Received Data) 3 RX– (Negative Side of Received Data) 6 Not Used 4, 5, 7, 8

Note: The DCE setting allows direct connection of the unit to a standard PC communications port using a 1:1 cable. The DTE setting requires a null mode m cable. If connecting to a modem , us e DT E.

Signal Name Pin

SSU-2000e Family of Modules

The SSU-2000e family of modules includes the following:

 Stratum 2E Clock Module  Stratum 3E Clock Module  Type 1 Clock Module  Communications Module  1-Port and 3-Port E1 Input Modules  1-Port and 3-Port DS1 Input Modules  GPS Input Module  Composite Clock Input Modules  E1 Output Module  DS1 Output Module  Composite Clock Output Module  E1/2048 kHz Output Module  2048 kHz Output Module  RS-422 Output Module  Buffer Modules

40 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 41

Chapter 1 Product Overview

System Components

Some of the features common to each module include:

 Any module can be inserted or removed while power is applied without affecting

the operation of other modules in the system.

 All modules are individually fused to protect the system in case of a short circuit

on any one module.

 All modules have status LEDs on their front panel.  All modules are equipped with ejector tabs for ease of installation and removal

and secured in place with captive screws to provide module security and reduce the occurrence of unauthorized removal.

 All SSU-2000e modules have an integrated CPU with firmware and are so ftware

configurable.

 Each module slot also has three pins connected together on its assigned hybrid

DIN connector which permits the system to detect when a particular module is removed. More information is available for each of these modules in Chapter 6,

Clock Module Reference Data, Chapter 7, Input Module Reference Data, and Chapter 8, Output Module Reference Data.

Clock and Communications Modules

Stratum 2E Clock Module

The Stratum 2E Clock module uses a Rubidium oscillator and meet s the ITU-T and ETSI specifications for Type II Transit Node clocks. This clock also meets the requirements of ANSI and Telcordia Industries (Bellcore) for Stratum 2 clocks.

The module reads measurement data from the input modules, provide frequency control of its oscillator through DDS circuitry, and generates a reference signal used by the input and output modules. The clock module also maintains phase synchronization with the redundant clock module. For more information, see

Stratum 2E Clock Module, on page 142.

Stratum 3E Clock Module

The Stratum 3E Clock module meet s or exceeds performance requireme nts for ITU and ETSI Type III Local Node clocks and ANSI and Bellcore Stratum 3E.

The Stratum 3E C lock Module reads measu rem ent data from the Input modules, provide frequency control of the oscillators through DDS circuitry, and generates a reference signal used by the Input and Output modules. The Clock module maintains phase synchronization with the redundant Clock module. Its hardware and software also provides for temperature compensation, aging compensation for quartz oscillators, an initial offset adjustment, and frequency adjustment resolution of 1 x

-13

or better. For more information, see

Stratum 3E Clock Module

, on page 146.

Type I Clock Module

The Type I Clock module uses a quartz oscillator which meets or exceeds the performance requirements for ITU and ETSI Type I Slave clocks.

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 41

Page 42

Chapter 1 Product Overview

System Components

The Type I Clock module reads measurement data from the Input modules, provides frequency control of the oscillator through DDS circuitry, and generates reference signals used by the Input and Output modules. For more information, see

Type I Clock Module, on page 150.

Communications Module

The Communications module serves as the user interface to the SSU-2000e. The module command interface supports three EIA-232-C connections and one Ethernet interface for communication with the SSU-2000e system. This module also logs the unit events into non-volatile memory for inspection at a later date and reports alarms as they occur. For more information, see Communications Module, on page 154.

Input Modules

1-Port and 3-Port DS1/E1 Input Modules

The DS1 and E1 Input modules are available with both 1-Port and 3-Port configurations. These modules receive signals and perform phase measurement comparisons with the Clock modules that are installed in the SSU-2000e. The Clock modules use this information to phase and frequency lock to the incoming signal. The data may also be used for monitoring the frequency of incoming signals.

The DS1 and E1 Input modules accept the following signals: sine or square wave (with frequency of 1, 1.544, 2.048, 5 or 10 MHz) or framed communications type DS1 or E1. If the input signal is a communications type, the module monitors the following errors:

 Alarm Indication Signaling (AIS)  Bipolar Violations (BPV)  Cyclic Redundancy Check (CRC)  Loss of Signal (LOS)  Out Of Frame (OOF)

The module also extracts Synchronization Status Messages (SSM) from incoming data. For more information, see 1-Port and 3-Port E1 Input Modules, on page 164, and 1-Port and 3-Port DS1 Input Modules, on page 173.

GPS Input Module

The GPS Input module is a one-port card that can only be installed in the SSU-2000e main shelf. The module is used to correct the frequency of the oscillator on the Clock module. It monitors and reports the status and performance of the module and radio signals that it receives. See GPS Input Module, on page 182, for more information.

You must install this module in slot A3 or A5; the antenna connectors J6 and J7 on the rear panel are connected to these slots, respectively.

42 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 43

Chapter 1 Product Overview

System Components

Composite Clock Input Module

The Composite Clock Input module conditions a composite clock input signal that is used to control the frequency of the Clock modules. For more information, see

Composite Clock Input Module, on page 185.

In Subtending mode (either ANSI or Japanese), the module also produces a 4 kHz synchronization signal that determines the phase of the composite clock signals generated by Composite Clock Output modules. This signal ensures that the phase of the composite clock output signals follows the phase of the composite clock input reference signal.

Output Modules

E1 Output Module

The E1 Output module uses one of three 4 kHz clocks from the SSU-2000e main shelf backplane to generate a phase-locked signal of 2.048 MHz. If the unit is inserted into an SDU-2000e expansion shelf, a fourth 4 kHz clock (D clock) is available. The phase-locked 2.048 MHz signal is used to generate a set of 20 output signals for distribution to large networks. See E1 Output Module, on page 190, for more information.

DS1 Output Module

The DS1 Output module generates a phase-locked signal of 1.544 MHz using one of three 4 kHz clocks from the backplane of the SSU-2000e main shelf. If the module is inserted into the SDU-2000e Synchronization Distribution Unit (expansion shelf), a fourth 4 kHz clock is available. The phase-locked signal generates a set of 20 output signals for distribution to large networks. DS1 Output Module, on page 194, contains detailed information on the module.

Composite Clock Output Module

The Composite Clock (CC) Output module can be installed in the SSU-2000e to generate and monitor CC signals, monitor input reference signals, accept new configuration data, and report status. This module provides 20 signal pairs (TTIP and TRING signal pairs), which are referenced to the selected clock signal. For more information, see Composite Clock Output Module, on page 197.

E1/2048 kHz Output Module

The E1/2048 kHz Output module can be installed in the SSU-2000e to generate and monitor 20 independent E1/2048kHz output signals. If the module is inserted into an SDU-2000e expansion shelf, a fourth 4 kHz clock (D clock) is available. If the input signal PQL drops below a user-specified level, then the outputs can be squelched. For more information, see E1/2048 kHz Output Module, on page 201.

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 43

Page 44

Chapter 1 Product Overview

Communications Protocol

2048 kHz Output Module

The 2048 kHz Output module plugs into selected input/output slots in the SSU-2000e main shelf or one of the output slots on the expansion shelf. The module generates and monitors 20 independent 2048 kHz signals that are referenced to a selected clock module. The 2048 kHz Output module receives a set of three (four if installed in an expansion shelf) 4 kHz clocks from the Clock module s and uses these clocks to develop an 8.192 MHz phase-locked signal. This phase-locked signal is then used to generate 20 set s of 2048 kHz clock output s. For more information, see 2048 kHz Output Module, on page 209.

RS-422 Output Module

The RS-422 Output module generates 10 balanced square-wave outpu ts (TTIP and TRING signal pairs) and 10 single-ended (Ring) square-wave outputs. Each output can be turned off independently of other port s; relays on ea ch output disconnect the driver output from the output pins. A squelch feature turns off selected ports when the input signal falls below predetermined quality levels. See RS-422 Output

Module, on page 215.

Buffer Module

The Buffer module buffers the backplane and clock signals sent from the main shelf; the modules are installed in slots 15 and 16 of the SDU-2000e. Symmetricom recommends a minimum of one Buffer module in each expansion shelf; a second Buffer module provides redundancy.

Communications Protocol

This section summarizes the methods of controlling the SSU-2000e and the available software features, depending upon the system functionality required.

Software Interface

There are four methods of controlling the SSU-2000e. The interfaces are:

TL1 – Transaction Language One

TL1 provides command sets to support all operation, administration, maintenance, and provisioning tasks required to maintain and control an SSU-2000e system. These tasks include configuring and provisioning security, monitoring system performance, configuring hardware, locating and handling faults, and performing equipment diagnosis and testing. Refer to the SSU-2000e Technical Reference for more information.

ICS – Interactive Command Set

ICS also provides command sets to support all operation, administration, maintenance, and provisioning tasks required to maintain and control an SSU-2000e system from a terminal connected to one of the SSU-2000e EIA-232 serial ports. ICS commands are designed in a more readable interface for users with an instructional help facility. Refer to the SSU-2000e Technical Reference.

44 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 45

Chapter 1 Product Overview

Communications Protocol

NTP – Network Time Protocol

The Network Time Protocol (NTP) is used to synchronize the time of a computer client or server to another server or reference time source, such as a GPS receiver or local timing source.

The SSU-2000e implements the NTP v.3 (RFC 1305) version. It can run as a server application and a client application. In addition, a broadcast mode may be implemented as either a server or client. The NTP server always runs and the client and broadcast modes are enabled independently by assignment of addresses and setting of timers. Refer to the SSU-2000e Technical Reference for more information.

SNMP – Simple Network Management Protocol

The SSU-2000e offers two versions of SNMP: v2 and v3. SNMP v3 software offers additional security with authentication and privacy parameters. The security feature allows secure transactions to provide protection against modification of information, masquerade, and message stream modification.

Simple Network Management Protocol (SNMP) is based on a client-server query-response mode. A manager is the client generating the queries, while an agent is the server generating the responses.

The SSU-2000e SNMP is an SNMP agent that requires Ethernet connectivity. If SNMP is present, port 161 becomes the port of standard SNMP interactive communications, while port 162 becomes the trap port. Since the SSU-2000e SNMP supports all existing functions, full system control of the SSU-2000e is maintained through SNMP.

The SSU-2000e implements an SNMP agent. A Management Information Base (MIB) browser or the SNMP Manager is used to access, retrieve, and query information defined by the MIB.

All reports, queries, autonomous messages, control, provisioning, and administration (except for communication port parameters, Set User ID/Password, Set IP assignments, Reset connection, and SNMP community settings) are available through SNMP. Refer to the SSU-2000e Technical Reference for more information.

Software Versions

There are six different versions of software available for the SSU-2000e, as shown in Table 1-7. The functionality and commands that are available vary from one version of software version to the next, depending on the specific features of the software package; see the SSU-2000e Technical Reference for more information.

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 45

Page 46

Chapter 1 Product Overview

Communications Protocol

Table 1-7. Communications Module Software Versions

Basic System Load X X Basic w/NTP Support X X X Basic w/SNMP v2 Support X X X Basic w/SNMP v2 and NTP Support X X X X Basic w/SNMP v3 Support X X X X Basic w/SNMP v3 and NTP Support X X X X X

Basic System Load

The basic system load includes all TL1 and ICS support software. TL1 provides command sets to support all operation, administration, main tenance, and provisioning tasks required to maintain and control an SSU-2000e system. These tasks include configuring and provisioning security, monitoring system performance, configuring hardware, locating and handling fault s, and performing equipment diagnosis and testing. Refer to

Version TL1 ICS NTP SNMP v2 SNMP v3

the SSU-2000e Technical Reference

for more information.

ICS also provides command sets to support all operation, administration, maintenance, and provisioning tasks required to maintain and control an SSU-2000e system from a terminal connected to one of the serial ports. ICS commands are designed in a more readable interface for users, and includes an instructional help facility. Refer to the SSU-2000e Technical Reference for more information.

Graphical User Interface

SynCraft is a software interface program that is available to provide monitoring and configuration functionality in a Microsoft Windows graphical user interface. Contact your Symmetricom Sales Representative for more information on the SynCraft Graphical User Interface, part number 14113245-000-0. For more information on control interfaces and the software commands available for each, see the SSU-2000e Technical Reference.

46 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 47

Overview of SSU-2000e Operation

After initial installation and configuration is completed, the SSU-2000e is capa ble of unattended operation. After power-up, where the external powe r supplies are turned on so that they supply power to the main shelf, the SSU-2000e performs a self-diagnostic test routine and properly initializes the hardware. Any active Alarms are time tagged and reported as Events. All Events are time t agged and the last 500 Events are stored in NVRAM. All Events can be cleared by the user with the appropriate access level. Several optional levels of password protection are available for system protection as described in Chapter 2, Installing the SSU-2000e.

After the internal oscillators on any installed Clock modules have warmed up, the SSU-2000e enters the ACQUIRE mode to phase lock the oscillators to the external references. After the SSU-2000e reaches the LOCKED mode on at least one of the Clock modules, any change of state is reported as an Event.

Synchronization Status Messages (SSMs)

Chapter 1 Product Overview

Overview of SSU-2000e Operation

The SSU-2000e supports input and outputs SSMs. SSMs provide clock quality information to any equipment that uses synchronization inputs. Table 1-8 describes the ANSI SSM values and the traceability associated with each value. describes the ITU SSM values and the traceability associated with each value.

Table 1-8. ANSI SSM Quality Level Definitions

Description

(20 ppm clock) Stratum 4 traceable 8 ST4

Quality

Level

7SMC

Abbreviation

Do Not Use for synchronization 9 DUS

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 47

Page 48

Chapter 1 Product Overview

SDU-2000e Synchronization Distribution Unit

Table 1-9. ITU SSM Quality Level Definitions

Description

Primary Reference Clock 2 PRC Transit Node 4 SSUT Local Node 8 SSUL Synchronization Equipment Clock 11 SEC Do Not Use for synchronization 15 DNU

Quality

Level

Abbreviation

The SSU-2000e handles SSMs in accordance with T1X1.3 TR33, T1.101-1999, GR-253, and 379-CORE.

Indicators and Controls

All modules installed in the SSU-2000e main shelf and the SDU-2000e expansion shelf contain status indicator lamps for displaying status. The LED indicators for each module are described in Chapter 6, Clock Module Reference Data, Chapter 7,

Input Module Reference Data, and Chapter 8, Output Module Reference Data. In

addition, the Communications module collects status information from all installed modules, sets the alarm relays, and sends communications status alerting users of any Events that exceed alarm thresholds.

The user controls these operating limits and collects mea surement data throu gh the use of a peripheral device connected to one of three EIA-232 ports, or through the optional Ethernet connector on the front of the unit.

SDU-2000e Synchronization Distribution Unit

The SDU-2000e Synchronization Distribution Unit (Figure 1-12) is an expansion chassis that attaches to an SSU-2000e Synchronization Supply Unit and is used to generate additional output signals. The expansion chassis uses the framing and synchronization features of the SSU-2000e main chassis to drive an array of Output modules. Communication with the expansion chassis is performed through one of the three serial ports, or through the ethernet port on the main chassis front panel.

48 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 49

SDU-2000e Synchronization Distribution Unit

Chapter 1 Product Overview

Figure 1-12. SDU-2000e Synchronization Distribution Unit

Each expansion shelf in the system can support an additional 10 summed pair Output modules, 2048 kHz, Composite Clock (CC) or framed 2048 kbit/s (E1) or DS1 Output modules in any combination and two Buffer modules. Each pair of Output modules produces 20 redundant or protected outputs. Each expansion chassis can provide 100 summed (1:1 protected) output signals. Up to four expansion chassis can be daisy chained together to produce 400 summed output signals for large scale system applications.

All output signals generated by the Output modules in each expansion shelf conform to specifications for International, European and North American applications as a primary reference source (PRS) and slave clock (SSU/TSG). The SSU-2000e, which drives the SDU-2000e expansion chassis, allows the integration of a variety of synchronization reference schemes including GPS and land line 2048 kbit/s (E1)/DS1 network sources.

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 49

Page 50

Chapter 1 Product Overview

SDU-2000e Synchronization Distribution Unit

The expansion chassis is designed to be compatible with international environmental, safety and electromagnetic compliant (EMC) standards for

-48/60 VDC powered telecommunication transmission equipment installed in telecommunication centers with inside telecom signal connections. The farthest expansion chassis may be located up to 61 meters from the SSU-2000e main shelf.

Figure 1-13 shows a simplified functional block diagram of the SDU-2000e

expansion chassis.

Figure 1-13. SDU-2000e Block Diagram

50 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 51

SDU-2000e Synchronization Distribution Unit

Chapter 1 Product Overview

Functional Overview

The SDU-2000e interfaces with the main shelf in two-way communication through the SSU/SDU interface cable. The SDU-2000e receives buffered synchronization clock signals that are used to produce the differential output sig nals at the connector p anel, as shown in the functional block diagram in supplies the SDU-2000e chassis with a backup clock (D Clock) which can sustain the expansion shelf even if the main cable is acciden tly disconnecte d. An add ress switch on the connector panel of the expansion shelf identifies each additional shelf to the main shelf for status and firmware downloading purposes.

Each expansion shelf extends the expansion bus and D clock to the next chassis in the daisy chain. The last expansion shelf uses a set of termination plugs on the Expansion Bus Connector and the Backup-Clock Connector.

Each expansion shelf can support any combination of up to ten 2048 kHz, Composite Clock (CC), or framed 2048 kbit/s (E1) or DS1 modules, each capable of generating 20 output signals for distribution to large networks. Each Output module generates a phase-locked signal of 1.544 Mbps (DS1) or 2048 kbit/s (E1) using one of three 4 KHz clocks supplied by the clock oscillators in the SSU-2000e main shelf. The phase locked clock signal is buffered and summed with a companion Output module in redundant pairs to generate a set of 20 independent output clock signals for distribution to large networks.

Figure 1-13

. A second interface cable

Output modules are available to support the following formats:

 2048 Kbit/s (E1)  DS1, SF (D4) and ESF  2048 kHz  Composite Clock (64/8 kHz)  RS-422

Expansion Shelf Features

The SDU-2000e expansion shelf consists of the following major compo nent s and is shown in Figure 1-14.

 Expansion chassis  One or two Buffer Modules; where two provide a more robust system  Up to 10 Output modules, which can be a combination of Output module types  Connector panel with five groups of output connectors, SDU interface connector

group, dual power connectors, dual frame ground connectors, and a shelf address switch

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 51

Page 52

Chapter 1 Product Overview

SDU-2000e Synchronization Distribution Unit

Clock Source

The clock inputs for the first SDU-2000e expansion chassis in an SSU-2000e system are supplied by the A and B Clock modules in the main chassis. A multi-pin connector on the front panel of the SSU-2000e (labeled J8 EXPANSION) provides the reference signals from the main shelf Clock modules for use by the SDU-2000e expansion shelves.

Figure 1-14. SDU-2000e Expansion Chassis Components

SDU Backup Clock

For redundancy, a backup clock, labeled SDU BACKUP CLK, is supplied to each expansion chassis to allow each expansion chassis to continue operating if the main expansion bus (cable) is accidently disconnected or dislodged.

52 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 53

SDU-2000e Synchronization Distribution Unit

Chapter 1 Product Overview

The SDU Backup Clock terminals, labeled J104 and J106, are 9 Pin D-type female connectors that are connected in parallel. Connector J104 is used to connect to a source unit, such as the SSU-2000e or to connector J106 on another expansion shelf. Connector J106 drives an additional SDU-2000e shelf, or it is terminated using an SDU backup clock terminator.

When installing an expansion chassis, move the clock terminator from J9 on the SSU-2000e, or connector J106 from a previous SDU-2000e expansion chassis, and install the terminator on J106 of the last expansion chassis in the daisy chain, see

Figure 1-15.

Figure 1-15. Backup Clock Terminator, Side and Front Views

Setting the Expansion Shelf Address

Each SDU-2000e expansion chassis must be correctly configured for its position in the daisy chain. The main shelf’s address is 1. The SDU shelf address selector is numbered from two to five. Set the first expansion shelf address to 2. Set the address on additional shelves sequentially, as shown in Table 1-10.

Table 1-10. Expansion Shelf Addressing

Shelf Address

Main Shelf 1 Expansion Shelf 1 2 Expansion Shelf 2 3 Expansion Shelf 3 4 Expansion Shelf 4 5

Buffered Clocks

The signals that are provided by the main shelf Clock modules to the Buffer modules in the expansion shelf are isolated versions of the signals used by the Output modules in the main chassis. This prevents the expansion shelf and its cabling from affecting the outputs of the main shelf.

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 53

Page 54

Chapter 1 Product Overview

SDU-2000e Synchronization Distribution Unit

SDU Module Features

The SDU-2000e expansion chassis family of modules include the E1 Output module, DS1 Output module, 2048 kHz Output module, Composite Clock module, and Buffer modules. The SDU-2000e expansion chassis may have up to 12 modules installed.

 One or two Buffer modules, assigned to chassis slots A15 and A16  One to ten Output modules; a mixture of Output module types, where each group

of two modules must be identical

The last two module slots in the expansion shelf, labeled A15 and A16, contain the Buffer modules that buffer the corresponding Clock and Communications module signals from the main shelf. The buffered signals from the se modules are distributed through the motherboard to 10 Output modules.

Other common module features include:

 Any module can be inserted or removed while power is applied without affecting

the operation of other modules in the system

 All modules are individually fused to protect the system in case of a short circuit

on any one module

 The SSU-2000e and the SDU-2000e share common Output modules  All modules have front panel LED status indicators  All modules are equipped with ejector tabs for ease of installation and removal  All modules are secured in place with captive screws to provide module security

and reduce the occurrence of unauthorized removal

 All modules, except the Buffer module, have an integrated CPU with firmware

and are software configured through the SSU-2000e, see Configuring a

Conventional SSU/TSG System, on page 226, for additional information

 Each module slot has two associated hybrid DIN connectors on the chassis

backplane. The hybrid contacts of these connectors are used for Power, Logic Ground, and Frame Ground connections

 Each module slot has three pins on each Hybrid DIN connector that allow the

system firmware to detect module removal and insertion. This provides plug-and-play capability.

Connector Panel Features

The expansion chassis provides front-accessible connections for external power, grounding, clock inputs, and output connections. All modules plug in from the front of the chassis.

54 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 55

SDU-2000e Synchronization Distribution Unit

Chapter 1 Product Overview

Power Input and Grounding

The SDU-2000e expansion chassis has redundant –48/60 VDC power input connections, labeled A-BUS and B-BUS (J101 and J102). Both the A-BUS and B-BUS are fed to the individual module slots through the chassis backplane.

Figure 1-16. SDU-2000e Connection Features

Expansion Connectors

Up to four SDU-2000e expansion shelves can be attached to the SSU-2000e main shelf. The two terminators (SSU Expansion Terminator and SDU Backup Clock Terminator) must be moved from the SSU-2000e chassis (connectors J8 and J9) to connectors J105 and J106, respectively, on the last expansion chassis in the daisy chain. A simplified expansion cabling diagram is shown in Figure 1-17.

Output Module Redundancy Configurations

For each A/B pair of Output modules, the outputs of module B are connected to the corresponding outputs of module A. This provides for 1:1 output protection (1:1 redundancy).

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 55

Page 56

Chapter 1 Product Overview

SDU-2000e Synchronization Distribution Unit

Figure 1-17. Expansion Chassis Cabling

Controls and Indicators

All modules installed in the SDU-2000e expansion shelf contain LED status indicators for displaying status. Any faults from the inst alled modules are se nt to the SSU-2000e Communications module through the buffer modules; the appropriate alarm relays are set and communication status is sent to alert users of any events that exceed specified alarm thresholds.

56 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 57

Chapter 2 Installing the SSU-2000e

This chapter provides guidelines and procedures for installing the SSU-2000e Synchronization Supply Unit and the SDU-2000e Expansion shelf, and for bringing the unit on-line after installing it.

In This Chapter

 Unpacking and Inspecting the Shelf  Preliminary Procedures  Rack Mounting the SSU-2000e  Making Ground and Power Connections  Making Communications Connections  Making Signal Connections  Making Alarm Connections  Connecting Antennas  Handling Modules  Installing the SDU-2000e  Installation Checklist  SSU-2000e Turn-Up Procedures  SDU-2000e Turn-Up Procedures  After Turn-Up

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 57

Page 58

Chapter 2 Installing the SSU-2000e

Unpacking and Inspecting the Shelf

The SSU-2000e is packaged to protect it from normal shock, vibration, and handling damage. To avoid damaging the unprotected unit, caution is advised during unpacking and installation.

Caution: To avoid damage, use proper static control precautionary measures when handling the modules. Protect the equipment against electrostatic discharge (ESD) by using a protective wrist-strap attached to ground and normal equipment grounding.

1. Unpack all equipment carefully and check it against the purchase order.

2. Inspect the equipment for shipping damage, including bent or loose hardware, broken connectors, or other visible defects. Notify Symmetricom and the carrier who delivered the equipment if you suspect damage occurred during transit.

If any items are missing, contact Symmetricom Global Services.

Recommendation: Keep all packaging materials in the event the system or components must be returned or shipped to another location.

Preliminary Procedures

Make sure that the following preparations are in place before installation.

 Ensure that standard installation tools and materials are available, see

Installation Tools and Materials, on page 59.

 The installation site is secured:

– Access to the location can only be gained by service personnel or users

who have been instructed about the reasons for the restrictions applied to the location and about any precautions that shall be taken; and

– Access is through use of a tool or lock and key, or other means of security,

and is controlled by the authority responsible for the location

 Ensure that the system location does not cause electromagnetic interference

with other equipment in the area, see Electromagnetic Interference (EMI)

Considerations, on page 59.

 Ensure that adequate ventilation space is available in rack or equipment cabinet

to safely operate the system, see Ventilation Considerations, on page 60.

 The SSU-2000e is suitable for installation over concrete or other

non-combustible surfaces only.

58 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 59

Chapter 2 Installing the SSU-2000e

 Ensure that the mounting rack or equipment cabinet is properly grounded and

Preliminary Procedures

has power available, see Making Ground Connections, on page 62.

Caution: To avoid electrostatic discharge (ESD) damage to equipment, follow the ESD precautions as listed in this guide.

Recommendation: Symmetricom recommends that you follow all applicable local building electrical codes when installing the SSU-2000e.

Installation Tools and Materials

The following required standard tools and materials are required, but not supplied for installing the SSU-2000e system.

 Standard tool kit  Cable ties or acceptable cable clamps

 1.31 mm  0.326 mm

 Screws, flat washers, and locking washers for mounting the equipment rack  DA3W3P mating connectors for mounting the power input  Digital Voltmeter (DVM)  Straight-through RS-232 cable  Laptop computer or PC with a terminal emulation program such as

(minimum) wire for –48V, RTN, and frame ground

shielded twisted pair wire-wrap cable (Amp #640433-7 or equivalent)

HyperTerminal or ProComm Plus

Electromagnetic Interference (EMI) Considerations

Electromagnetic interference (EMI) from one instrument can adversely affect the operation of nearby equipment. To prevent the SSU-2000e from interfering with other equipment, it must be installed and operated as described in the following paragraphs.

All cables connected to the SSU-2000e should be shielded with metal connector shells. The connectors on the front of the chassis are shielded, with the shields connected to frame ground. Follow local procedures for shield grounding. The screws on all cables must be securely fastened to their corresponding connectors on the unit. While the unit is in operation, there must be a module or blank filler panel installed in every slot. Ensure that the captive screws located at the top and bottom of the module panel are properly secured.

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 59

Page 60

Chapter 2 Installing the SSU-2000e

Rack Mounting the SSU-2000e

Caution:

To maintain EMC compliance, use only properly shielded cabling on all telecom signal wiring, including I/O, clocks, and Ethernet connections. Ensure that connections are properly grounded.

Ventilation Considerations

For proper ventilation, there should be at least 76 mm (2 RU) of free space below the shelf.

Caution: To avoid excessive heat build-up resulting in equipment damage, provide proper ventilation and cooling of the equipment.

Rack Mounting the SSU-2000e

The SSU-2000e shelf is passive and contains all the necessary interconnecting signals to support a combination of plug-in modules. For example, the SSU-2000e may be configured to contain two Clock modules, a Communications module, three Input modules, and six Output modules configured with three pairs of summed outputs.

Warning: To avoid serious personal injury or death, exercise caution when working near high voltage lines. In particular:

 Use extreme caution when installing the GPS antenna near,

under or around high voltage lines.

 Follow local building electrical codes for grounding the antenna

system that is used with the SSU-2000e unit.

Caution: For continued fire protection, fuse the inte rface “A” power feeds at the power distribution source for (5A @ 60 VDC).

This unit must be grounded. Refer all servicing to qualified personnel.

The SSU-2000e shelf also provides specific connections for the following:

 Grounding, see Making Ground Connections, on page 62  External Power Inputs, see Making Power Connections, on page 62



Communications Interfaces, see

Making Communications Connections

 Alarm Contact Closures, see Making Alarm Connections, on page 71

, on page

 Clock Inputs, see Making Input Connections, on page 67

60 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 61

Chapter 2 Installing the SSU-2000e

Rack Mounting the SSU-2000e

 Clock Outputs, see Making Output Connections, on page 70

All SSU-2000e modules are equipped with card ejectors and plug in from the front of the chassis. Each module is secured in the chassis with captive screws.

The SSU-2000e may be mounted in either a 300 mm or 600 mm deep equipment cabinet. The SSU-2000e chassis occupies 500 mm vertically, 229 mm depth, and a width of 431.8 mm. Included are 530 mm ETSI compatible rack mounting ears. Optional 480 mm rack mounting ears are available for 480 mm EIA racks and cabinets.

The front panel of the chassis mounts flush to the rack or at a distances of 25 mm from the front of the rack. An SSU-2000e equipment cabinet mounting diagram is shown in Figure 2-1.

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 61

Page 62

Chapter 2 Installing the SSU-2000e

Making Ground and Power Connections

Figure 2-1. Equipment Mounting Cabinet

To install the SSU-2000e in the mounting rack:

1. Attach a mounting bracket to each side of the chassis by aligning two columns (three holes per column) of the bracket with the holes on the side of the chassis. Use appropriate screws for attaching the mounting bracket. Ensure that both brackets are attached at equal distances from the front of the unit.

2. Mount the SSU-2000e to the front of the rack rails with the appropriate number of screws and washers for the rack.

Recommendation: To aid in viewing and when connecting cables, install the SSU-2000e chassis at eye level whenever possible.

Making Ground and Power Connections

Making Ground Connections

After installing the SSU-2000e in a suitable equipment cab inet, connect the chassis to a proper earth ground. This can best be accomplished by running a cable from the frame ground lug and connecting it to the equipment cabinet. Keep this cable as short as possible. Frame ground connections are made through two M5 studs labeled FG located next to the power connectors in the upper right and left corners of the shelf. Frame and logic ground are connected together on the backplane to form a multi-point ground system.

Using a digital voltmeter, measure between the ground and chassis and verify that no voltage potential exists between them.

Making Power Connections

The SDU-2000e Main shelf has redundant –48/60 VDC power input connections, labeled J101 A-BUS and J102 B-BUS. The A-BUS connection is a DA3W3P connector located in the upper left corner and the B-BUS connection is another DA3W3P connector located in the upper right corner.

Refer to Figure 2-2 for power connections. Pin 1 of each connector is not used. Pin 2 of each connector is –48/60 VDC and pin 3 is the Return. The –48/60 VDC power inputs have feed-through Pi-filters on each line through the front panel and DC Isolated from Frame and Logic ground. The power return connections are connected to Frame and Logic ground. Both the A-BUS and B-BUS power are fed to the individual module slots through the backplane.

62 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 63

Chapter 2 Installing the SSU-2000e

Making Communications Connections

Caution: To damage to the shelf requiring return of the shelf to the

factory, do not reverse the polarity on the power connectors. The SSU-2000e chassis is not protected from reverse polarity.

To connect the power input, perform the following steps:

1. Remove the power supply fuse(s) that feed the SSU-2000e. You install the fuses after you make all power, signal, and alarm connections.

2. Attach 1.29 mm

(minimum) stranded wire to two DA3W3P connectors (supplied)

as shown in Figure 2-2.

3. Attach the connectors to the A-bus and B-bus power terminal blocks on the upper corners of the front panel.

Figure 2-2. SSU-2000e Power Input Connector

Making Communications Connections

The SSU-2000e shelf has connections for three communication interfaces: two EIA-232 serial ports and one Ethernet port. There is also a 2PDT slide switch, labeled S1, associated with the serial ports. Refer to Table 2-1 for the serial and Ethernet communications port assignments.

Note: A third EIA-232 serial port may be connected via the Communications module. Refer to Chapter 6, Clock Module

Reference Data, for more information on the Communications

Module.

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 63

Page 64

Chapter 2 Installing the SSU-2000e

Making Communications Connections

Table 2-1. Communications Port Assignments

Port # Function Protocol

Serial Ports (EIA-232)

A (J4) This port is user selectable as either an ICS or a TL1

interface. The port defaults to ICS upon initialization

B (J5) This port is user selectable as either an ICS or a TL1

interface. The port defaults to ICS upon initialization

Local (Comms Module)

23 This port is user selectable as either an ICS or a TL1

123 This port is designated for NTP only NTP 161 This port is designated for SNMP Interactive SNMP Interactive 162 This port is designated for SNMP Trap transmission SNMP Trap 2000 This port is designated for TL1 only TL1

This port is user selectable as either an ICS or a TL1 interface. The port defaults to ICS upon initialization

Ethernet Ports (Telnet)

interface. The port defaults to ICS upon initialization

ICS (Default), TL1

Making EIA-232 Serial Port Connections

Both EIA-232 serial port connections are made through filtered DE9S female connectors on the front panel. These ports allow connection to a dumb terminal or PC using a terminal emulation software package for remote monitorin g and control. One port is in connector J4 and is labeled SERIAL PORT-A, the other port is in connector J5 and is labeled SERIAL PORT-B. When connecting to these ports, use a shielded cable EIA-232 direct connect cable with the cable shield connected to pin 1, see Figure 2-3.

Figure 2-3. DE9 Connector Detail

The default EIA-232 settings for both serial ports are 9600 baud, no parity, 8 data bits, 1 stop bit, echo on, ASCII mode, and handshaking disabled.

64 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 65

Chapter 2 Installing the SSU-2000e

Making Communications Connections

Using the EIA-232 Serial Port DTE and DCE Switch

The serial port DTE and DCE switch is located on the right side of the serial po rt s A and B on the front panel. Each port may be configured as either DCE (default, connection to PC) or DTE (connection to modem). The upper position is labeled A and the lower position is labeled B as shown in Figure 2-4.

Note: The DCE setting allows direct connection of the unit to a standard PC communication port using a 1:1 cable. The DTE setting requires a null modem cable. If connecting to a mod em, use DTE.

Figure 2-4. Serial Port DTE/DCE Switch

Changing Communications Settings

The default EIA-232 settings for both serial ports (Port A, J4 and Port B, J5) are 9600 baud, no parity, 8 data bits, 1 stop bit, echo on, ASCII mode, and handshaking disabled. To change these settings, perform the following steps.

1. Connect the serial communication cable from the DE-9 female connector on the PC or laptop to the interface remote terminal PORT-A (J5).

2. Verify that the slide switch is set to the appropriate equipment type, either data terminal equipment (DTE) or data communications equipment (DCE).

3. Connect a PC or laptop with terminal emulation software (such as Microsoft HyperTerminal) or ASCII terminal to the port.

4. Log in to the SSU-2000e at user level 2 or higher.

5. Use the COMM command to change the communications settings for the port. Refer to the SSU-2000e Technical Reference for a complete description of the Transition Language One (TL1) command interface mode and the Interactive Command Set (ICS) ASCII mode.

Making Ethernet Connections

The Ethernet 10-Base-T connection is a shielded RJ-45 receptacle, labeled Ethernet 10baseT (J3) on the front panel. The RJ-45 is the standard 10-Base-T connector. To attach the SSU-2000e to an Ethernet network, connect a standard unshielded twisted pair (UTP) Ethernet RJ-45 cable to J3 on the front panel.

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 65

Page 66

Chapter 2 Installing the SSU-2000e

Making Communications Connections

Table 2-2 lists the Ethernet communications port signal connections.

Table 2-2. Ethernet Connector (J3) Pinouts

TX+ (Positive Side of Transmitted Data) 1 TX– (Negative Side of Transmitted Data) 2 RX+ (Positive Side of Received Data) 3 RX– (Negative Side of Received Data) 6 Not Used 4, 5, 7, 8

Making Communications Module Connections

The Communications module serves as the user interface to the SSU-2000e. This module’s command interface supports three EIA-232-C serial connections and one Ethernet interface for communication with the SSU-2000e. Figure 2-5 shows an example of connecting to the local port on the front of the communication module. The PC or terminal must be configured for 8 data bits, no parity, 1 stop bit, and 9600 baud rate.

Name Pin

Figure 2-5. Communications Module Serial Connection

66 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 67

Chapter 2 Installing the SSU-2000e

Making Signal Connections

Communication control input and output requirements are listed in Table 2-3.

Table 2-3. Communication Requirements for Control Input and Output

Parameter Requirements

EIA-232

EIA-232, 2 each 1 (PORT-A J15) designated as remote

1 (COMMS J1) designated as local

Type Remote PORT-A is DTE or DCE, switch selectable.

Local COMMS (J1) is fixed DCE.

Connector 9 pin D-Type female connector

Ethernet

Ethernet (10baseT) TCP/IP Telnet connections for communication and control

Telnet session ICS Port Network Time Protocol (NTP) for Time of Day

Connector RJ-45

Making Signal Connections

Making Input Connections

The SSU-2000e Main shelf has nine sets of reference clock input connections on DE9P male connectors for connecting input telecom signals. There are three connectors in each set; each set is arranged vertically and labeled top to bottom Monitor, Load, and Input, as shown in Figure 2-6. There are three sets associated with each input module, creating three groups for a total of 27 connectors.

Connections for group one are made in connectors J10 through J18, group two in connectors J19 through J27, and group three in connectors J28 through J36. The Load and Input connectors are cross-wired as four-wire east-west connections. The Input connector is used for the reference input to the unit. The Load connector is used for termination of the input in a two-wire input connection and is used as a bridge or bypass connector in a four-wire or bridging connection. The Monitor connector is connected as a 20 dB monitor to the reference input signal.

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 67

Page 68

Chapter 2 Installing the SSU-2000e

Making Signal Connections

Figure 2-6. Clock Input Connector Pinout

Figure 2-7 shows the non-payload E1 (2048 kbit/s) and DS1 (1544 kbit/s) input

termination.

Figure 2-7. Non-Payload E1 and DS1 Input Termination

68 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 69

Chapter 2 Installing the SSU-2000e

Making Signal Connections

Figure 2-8 shows the through payload E1 and DS1 input termination.

Figure 2-8. Through Payload E1 and DS1 Input Termination

Each connector is associated with a specific input plug-in module slot. Table 2-4 describes the relationship between the connectors and the Input module slot connectors. The signal connections on these connectors are set up in differential pairs as Tip and Ring connections. Plugs are available for termination of input reference.

Table 2-4. Input Module Slot to Connector Relationship

Slot Label

(Name)

Plug-in

Module Slot

Module

Input Port

INPUT-1 A3 1 J10 J11 J12

2 J13 J14 J15 3 J16 J17 J16

INPUT-2 A4 1 J19 J20 J21

2 J22 J23 J24 3 J25 J26 J27

INPUT-3 A5 1 J28 J29 J30

Connector Reference Description

Monitor Load Input

2 J31 J32 J33 3 J34 J35 J36

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 69

Page 70

Chapter 2 Installing the SSU-2000e

Making Signal Connections

Making Output Connections

The SSU-2000e main shelf has three groups of summed clock output connections on DE9P male connectors for connecting output telecom signals, see Figure 2-9. There are twenty connectors in each group for a total of sixty output connections. The connectors in each group are arranged vertically in a five by four matrix and labeled from top to bottom, and from left to right. Connections for group one are made in connectors J40 through J59, connections for group two are made in connectors J60 through J79, and connections for group three are made in connectors J80 through J99.

Each connector is associated with a specific pair of output plug-in module slots.

Table 2-5 describes the relationship between the connectors and the Output module

slot connectors. The signal connections on these connectors are set up in differential pairs as Tip (pin 6) and Ring (pin 2) connections, with pin 1 as ground.

Figure 2-9. Clock Output Connector Pinout

Table 2-5. Output Module Slot to Connector Relationship

Slot Label

(Name)

OUTPUT-1 A6 1 J40 (1) through J59 (20) OUTPUT-2 A7 OUTPUT-3 A8 2 J60 (1) through J79 (20) OUTPUT-4 A9 OUTPUT-5 A10 3 J80 (1) through J99 (20) OUTPUT-6 A11

Plug-in

Module Slot

Group

Output Connector (Module Port)

Reference Description

Terminating SDU-2000e Interface Connections

If you are installing an SDU-2000e expansion shelf, follow the procedures in

Installing the SDU-2000e, on page 78. If you are not installing an expansion shelf:

70 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 71

Chapter 2 Installing the SSU-2000e

Making Alarm Connections

1. Install the BUS Termination Assembly (12013049-000-0-1, shown in Figure 2-10) on connector J8 of the main shelf.

2. Install an SDU Backup Clock terminator (551021-0040, shown in Figure 2-11) on connector J9.

Notes: If you are not installing expansion shelves, you must install the Expansion and Backup Clock Terminators on connectors J8 and J9 on the SSU-2000e.

The signals on connectors J8 and J9 are in differential pairs. Each pair is terminated with a series 1000 pf capacitor (J8) and a 120 Ω resistor (J9) on external plug-on terminators with locking slide latch.

Figure 2-10. SSU Expansion Terminator (J8)

Figure 2-11. SSU Backup Clock Terminator (J9) Side and Front View

Making Alarm Connections

The SSU-2000e Shelf has two filtered DA15P male connectors for local and remote alarm contact closure connections, as shown in Figure 2-12. The local connections are made on J1 and the remote connections are made on J2. The connectors are labeled ALARM CLOSURES, LOCAL (J1) and REMOTE (J2). They each have connections for normally open (NO), common or wiper (COM), and normally closed (NC) for each of these alarm categories: CRITICAL, MAJOR and MINOR.

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 71

Page 72

Chapter 2 Installing the SSU-2000e

Making Alarm Connections

Figure 2-12. Alarm Contact Closures and Pin Assignments

Alarm contact pin assignments are listed in Table 2-8.

Table 2-6. Alarm Contact Pin Assignments

MINOR – Normally Open Contact 7

Signal Pin

MINOR – Wiper Contact 15 MINOR – Normally Closed Contact 8 MAJOR – Normally Open Contact 4 MAJOR – Wiper Contact 12 MAJOR – Normally Closed Contact 5 CRITICAL – Normally Open Contact 1 CRITICAL – Wiper Contact 9 CRITICAL – Normally Closed Contact 2 Frame Ground 10 Frame Ground 11 Frame Ground 13 Not Used 3 Not Used 6

Note: In an alarm condition or with the loss of DC power, the contact closes between NO and COM, and the contact opens between NC and COM.

72 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 73

Connecting Antennas

The SSU-2000e chassis has two antenna connections located on the front panel. The antenna connections are made via a Type-N connector J6 labeled ANTENNA-A and isolated TNC connector J7 labeled ANTENNA-B. These connections are used for radio receiver antenna connections only. Refer to the SSU-2000e Technical Reference for installation procedures and additional instructions.

Warning: To avoid serious injury to personnel or damage to equipment, exercise caution when working near high voltage lines. In particular:

 Use extreme caution when installing the GPS antenna near,

under, or around high voltage lines.

 Follow local building electrical codes for grounding using the

frame ground lugs integrated with the SSU-2000e chassis.

 The in-line amplifier receives 5 VDC power from the GPS

radio receiver, and is supplied on the center conductor of the LMR-400 or equivalent coaxial cable. If the application requires an in-line amplifier, mount the amplifier/plate assembly where the transient eliminator would normally be mounted.

 Symmetricom does not recommend cutting the antenna

cables provided in the GPS Antenna Kit.

Chapter 2 Installing the SSU-2000e

Connecting Antennas

Handling Modules

The SSU-2000e main shelf has twelve plug-in module slots. The module slots are numbered from left to right looking at the front of the shelf, A1 through A12. Each module slot has a specific address as listed in hybrid DIN connectors associated with it on the backplane. The hybrid contacts of these connectors are used for power , logic grou nd, frame ground , and radio frequency (RF) connections. Each module slot has three pins connected together on each Hybrid DIN connector which are used for module removal detection. Signals on the back panel are configured as differential pairs unless they are considered static, or because of the signal type, they are required to be single ended.

Table 2-7. Module Slot Addresses in the Main Shelf

Module Type Slot Address

Clock Module A A1 1A01 Communications Module A2 1A02 I/O Module A3 1A03

Table 2-7

. Each module slot has two

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 73

Page 74

Chapter 2 Installing the SSU-2000e

Handling Modules

Table 2-7. Module Slot Addresses in the Main Shelf (Continued)

Module Type Slot Address

I/O Module A4 1A04 I/O Module A5 1A05 I/O Module A6 1A06 I/O Module A7 1A07 I/O Module A8 1A08 I/O Module A9 1A09 I/O Module A10 1A10 I/O Module A11 1A11 Clock Module B A12 1A12

Caution: To avoid equipment damage due to poor ventilation and EMI considerations, each slot in the SSU-2000e must be filled. Filler panels are available from Symmetricom for unpopulated slots.

When handling the modules, observe the following precautions:

 Use proper static control precautions when handling modules. Protect the

equipment against electrostatic discharge (ESD) by using a grounded protective wrist strap and normal equipment grounding.

Note: Two frame ground connectors, one on each mounting bracket on the sides of the unit, provides a ground connection for the protective wrist straps.

 Avoid touching component leads and the module’s edge connectors.  Avoid placing the module on any ungrounded surface.  Avoid allowing the module to come in contact with insulated surfaces.

Caution: To avoid the possibility of the lithium battery exploding if replaced incorrectly in the Communications or Clock modules, do not replace the battery. Return the entire module to Symm etricom Glo ba l Services for battery replacement and disposal.

74 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 75

Chapter 2 Installing the SSU-2000e

Handling Modules

Installing a Module

The following procedure is common for all modules in the SSU-2000e and SDU-2000e.

Note: Modules can be removed and installed while system power is applied without damage to the modules and without affecting system operation, unless otherwise indicated.

Install the modules by performing the following steps.

1. Align the module card edges with the plastic card guides of the selected slot.

2. Slide the module into the chassis until it seats fully into its rear panel edge connector.

3. Tighten the captive screws located at the top and bottom of the module front panel.

Caution: Ensure that you have completely inserted the module into the system and that you have securely tightened the cap tive scre ws. A partially inserted module can become easily damaged and cause intermittent failures.

4. Enable the module using either ICS or TL1 commands. The following example commands enable the module in slot 3 in the main shelf.

ICS command:

Type CONFIG 1A3 ENABLE, then press Enter.

TL1 command:

ACT-MODULE::S1A3:123;

Exchanging a Module

Use this procedure to exchange one type of module with the same type or a different type of module in the same slot. The example commands are for slot 3 in the main shelf.

1. Connect to the SSU-2000e using one of the metho ds describ ed in

Connection With the SSU-2000e

, on page 90. The system prom pts for a user

name.

Establishing a

2. Log in to the system using your user name and password.

3. Disable the module using either ICS or TL1 commands. The example

commands are for slot 3 in the main shelf.

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 75

Page 76

Chapter 2 Installing the SSU-2000e

Handling Modules

ICS command:

Type

CONFIG 1A3 DISABLE, then press Enter.

TL1 command:

DISC-MODULE::S1A3:123;

4. Loosen the captive screws located at the top a nd bottom of the module front

panel.

5. Pull up on the top extractor and down on the bottom extractor to unseat the

module from the connector on the backplane.

6. Slide the module out of the shelf.

7. Insert the new module into slot 3 of the main shelf. Tighten the captive screws

on the front panel of the module. Wait for the “ appear.

Note: Be sure that the I/O Adapter port is of the proper type and impedance for the new module.

module installed” message to

Caution: To avoid possible damage and intermittent failures, ensure that you have completely inserted the module into the system and that you have securely tightened the captive screws.

8. Enable the module using either TL1 or ICS commands:

ICS command:

CONFIG 1A3 ENABLE, then press Enter.

Type

TL1 command:

ACT-MODULE::S1A3:123;

9. Verify that the module is entered in the registry:

ICS command:

CONFIG, then press Enter.

Type

TL1 command:

RTRV-INV:::123;

Disabling a Module

Use this command to temporarily disable a module without removing it from the SSU-2000 registry. All outputs from the disabled module will turn off, unless a summer adapter is installed on the I/O connector on the rear panel of the shelf. The example commands are for slot 3 in the main shelf.

76 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 77

Chapter 2 Installing the SSU-2000e

Handling Modules

1. Connect to the SSU-2000e using one of the methods described in

Connection With the SSU-2000e

, on page 90. The system prompts for a user

Establishing a

name.

2. Log in to the system using your user name and password.

3. Disable the module using either ICS or TL1 commands:

ICS command:

Type CONFIG 1A3 DISABLE, then press Enter.

TL1 command:

DISC-MODULE::S1A3:123;

Removing Modules

This procedure describes how to permanently remove a module from the shelf.

Note: Modules can be removed and inserted while system power is supplied without damaging modules or affecting system operation.

1. Connect to the SSU-2000e using one of the metho ds describ ed in

Connection With the SSU-2000e

, on page 90. The system prom pts for a user

Establishing a

name.

2. Log in to the system using your user name and password.

3. Disable the module using either ICS or TL1 co mmands. The example commands

are for slot 3 in the main shelf.

ICS command:

Type

CONFIG 1A3 DISABLE, then press Enter.

TL1 command:

DISC-MODULE::S1A3:123;

4. Loosen the captive screws located at the top and bottom of the module front

panel.

5. Pull up on the top extractor and down on the bottom extractor to unseat the

module from the connector on the backplane.

6. Slide the module out of the shelf.

7. Install a blank filler panel to cover the empty slot.

8. Remove the module from the registry using either ICS or TL1 commands:

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 77

Page 78

Chapter 2 Installing the SSU-2000e

Installing the SDU-2000e

ICS command:

Type

CONFIG 1A3 REMOVE, then press Enter.

TL1 command:

RMV-MODULE::S1A3:123;

9. Verify that the module is not in the registry:

ICS command:

Type

CONFIG, then press Enter.

TL1 command:

RTRV-INV:::123;

Installing the SDU-2000e

This section provides guidelines and procedures for installing and cabling the SDU-2000e expansion chassis to the SSU-2000e main chassis. Before proceeding with the SDU-2000e installation, ensure that the procedures in Preliminary

Procedures, on page 58, have been performed.

The SDU-2000e chassis occupies 500 mm of vertical space, has a depth of 229 mm, and a width of 431.8 mm. Included are 530 mm ETSI compatible rack mounting ears. Optional 480 mm rack mounting ears are available for 480 mm EIA racks and cabinets. The SDU-2000e may be mounted on either a standard ETSI mounting rack or 300 mm deep equipment cabinet.

Caution: To avoid excessive heat build-up resulting in equi pment damage, ensure that there is at least 76 mm (2 RU) of free spa ce below the chassis.

Rack Mounting the SDU-2000e

The front panel of the chassis mounts flush to the rack or at distances of 100.5 mm from the front of the rack. An SDU-2000e equipment cabinet mounting diagram is shown in Figure 2-13. To install the SDU-2000e in the rack, perform the following:

1. Determine and locate the appropriate mounting brackets to be used.

2. Attach a mounting bracket to each side of the chassis by aligning two columns (three holes per column) of the bracket with the holes on the side of the chassis. Use the appropriate screws to attach the mounting bracket. Ensure that both brackets are attached at equal distances from the front of the unit.

3. Mount the chassis to the front of the rack rails using the appropriate number of screws and washers for the rack.

78 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 79

Chapter 2 Installing the SSU-2000e

Installing the SDU-2000e

4. If you are not connecting additional Expansion shelves, verify that the Bus Termination Assembly is inserted into the last SDU Interface (J105) and last SDU Backup Clock (J106) of the main SDU-2000e shelf, see Figure 2-14.

Caution: To maintain EMC compliance, use only properly shielded cabling on all telecom signal wiring, including I/O, clocks, and Ethernet connections. Ensure that connections are appropriately grounded.

Recommendation: To aid in viewing and when connecting cables, install the SDU-2000e chassis at eye level whenever possible.

Making Ground Connections

The procedures for making ground connections for the SDU-2000e are the same as for the SSU-2000e. Refer to Making Ground Connections, on page 62, and follow the procedures for grounding the SDU-2000e.

Making Power Connections

The procedures for making power connections for the SDU-2000e are the same as for the SSU-2000e. Refer to Making Power Connections, on page 62, and follo w the procedures to connect power to the SDU-2000e.

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 79

Page 80

Chapter 2 Installing the SSU-2000e

Installing the SDU-2000e

Figure 2-13. Equipment Mounting Cabinet

Connecting the Main Shelf

The SDU-2000e Expansion Chassis has interface connections on the front panel for connecting to an SSU-2000e Synchronous Supply Unit. Connections include the SDU Interface (J103 and J105) and the SDU Backup Clock Terminal (J104 and J106). Figure 2-14 shows SDU-2000e expansion unit cabling.

80 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 81

Chapter 2 Installing the SSU-2000e

Installing the SDU-2000e

SDU-2000e Interface Connector

Connection to the SSU-2000e is made through the SDU Interface Connectors. The SDU Interface Connections, J103 and J105, are 25 Pin D-Type female connectors with locking posts. The signals are differential pairs and connected in parallel. One connector is used to connect to a source unit, and the other is used for either a terminator or for feeding an additional SDU-2000e shelf. Up to four SDU-2000e shelves can be daisy-chained together. See Figure 2-14 for expansion unit cabling.

Figure 2-14 shows an SSU-2000e Expansion Terminator (part number

12013049-000-0). Install this terminator to the last expansion chassis in the daisy chain.

Figure 2-14. SSU-2000e Expansion Terminator

SDU Backup Clock Terminal

The SDU Backup Clock terminals (J104 and J106) are 9 pin D-type female connectors labeled SDU BACKUP CLK. They are connected in parallel. If the SDU is first in the daisy chain, J104 is used to connect to a source unit (SSU-2000e) and J106 is used to connect to an additional SDU-2000e shelf.

Install the backup clock terminator on the SDU BACKUP CLK connector J106 on the last expansion chassis in the daisy chain, see Figure 2-15.

Figure 2-15. Backup Clock Terminator, Side and Front View

Setting the Shelf Address

Each SDU-2000e expansion chassis must be correctly configured for its position in the daisy chain. The shelf address selector is located on the top center of the expansion chassis connector panel, see Figure 2-16. The settings range from 2 to

5. Using a common screwdriver, set the first expansion chassis to 2. If more

expansion chassis are added, set them sequentially up to 5.

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 81

Page 82

Chapter 2 Installing the SSU-2000e

Installing the SDU-2000e

Figure 2-16. Shelf Address Selector

Connecting SDU Clock Outputs

The SDU-2000e Shelf has five groups of summed clock output connections on DE9P male connectors for connecting output telecom signals. There are twenty connectors in each group for a total of 100 outputs. The connectors in each group are arranged vertically in a five by four matrix and are labeled from top to bottom and left to right. Connections for group one are made using J1 through J20, connections for group two are made using J21 through J40, connections for group three are made using J41 through J60, connections for group four are made using J61 through J80, and connections for group five are made using J81 through J100.

Each connector is associated with a specific pair of output plug-in module slots, see

Table 2-9 below for the plug-in module slot connector relationship. The signal

connections on these connectors are set up in differential pairs as Tip and Ring connections, see Table 2-8.

Table 2-8. Clock Output DE9 Connector Pin Assignments

Pin Signal

2Tip 6 Ring 1Sleeve 3,4,5, and 7-9 Unused

82 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 83

Table 2-9. Output Module Slot to Connector Relationship

Chapter 2 Installing the SSU-2000e

Installing the SDU-2000e

Slot Label

(Name)

OUTPUT-1 A1 1 J1 (1) through J20 (20) OUTPUT-2 A2 OUTPUT-3 A3 2 J21 (1) through J40 (20) OUTPUT-4 A4 OUTPUT-1 A5 3 J41 (1) through J60 (20) OUTPUT-2 A6 OUTPUT-3 A7 4 J61 (1) through J80 (20) OUTPUT-4 A8 OUTPUT-5 A9 5 J81 (1) through J100 (20) OUTPUT-6 A10

Plug-in Module

Slot

Group

Output Connector (Module Port)

Reference Description

Installing SDU Modules

The SDU-2000e shelf has 12 plug-in module slots located on the front of the chassis. The module slots are numbered from left to right looking at the front of the shelf, A1 through A12. Each module slot has a specific address defined in Table

2-10 below. Each module slot has two hybrid DIN connectors associated with it on

the backplane. The hybrid contacts of these connectors are used for power, logic ground, and frame ground connections. Each module slot has three pins conn ected together on each hybrid DIN connector which are used to detect module removal. Use the precautions in Handling Modules, on page 73, when handling modules in the SDU-2000e. Install modules in the SDU-2000e using the procedures in

Installing a Module, on page 75.

Caution: To avoid damaging the shelf, never insert Output modules in slots A15 and A16. Insert only Buffer modules into these slots.

Table 2-10. Module Slot Addresses

Slot-A Address Module Types Comments

1, 2 1, 2 Output, Pair 1 Paired Outputs 3, 4 3, 4 Output, Pair 2 Paired Outputs 5, 6 5, 6 Output, Pair 3 Paired Outputs

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 83

Page 84

Chapter 2 Installing the SSU-2000e

Installation Checklist

Table 2-10. Module Slot Addresses (Continued)

Slot-A Address Module Types Comments

7, 8 7, 8 Output, Pair 4 Paired Outputs 9, 10 9, 10 Output, Pair 5 Paired Outputs

11, 12 19, 20 Buffers Expansion Buffers

Caution: To avoid equipment damage due to poor ventilation and EMI considerations, each slot in the SDU-2000e must contain either a module or blank filler panel. Filler panels are available from Symmetricom for unpopulated slots.

11 - 14 Not Used In ETSI SDU 15 - 18 Not Used Reserved for future I/O (23” shelf)

0 All Addresses all modules in the Shelf

Installation Checklist

Perform the following steps to ensure that the SSU-2000e is correctly installed.

1. Unpack all equipment carefully and check it against the purchase order.

2. Ensure the SSU-2000e chassis is securely attached to mounting rack.

3. Ground the SSU-2000e chassis using the frame ground lug.

4. Measure between the ground and chassis and verify that no voltage exists.

5. If an SDU-2000e Expansion chassis is not being installed, ensure that the connectors J8 and J9 to the SSU-2000e are connected to a proper terminator.

6. Connect office alarms to the REMOTE and LOCAL terminals with 1.024 mm wire.

7. Using proper handling techniques, insert modules and filler p anels in appropriate slots.

8. Connect primary power to the A-BUS and secondary power to the B-BUS terminals by installing the appropriate 5-A fuse into the power supplies.

9. Measure the voltage at POWER A (and POWER B if used), and verify that it is between –38 VDC and –72 VDC (–48 VDC nominal).

10.Perform the procedures in SSU-2000e Tu rn-Up Procedures , on page 85.

84 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 85

Chapter 2 Installing the SSU-2000e

SSU-2000e Turn-Up Procedures

11.Verify that all module s are receiving power and gene rating regulated DC ou tput s by checking that their POWER indicators (LEDs) are lit, see Normal System

Indications During Turn-Up, on page 87.

12.

To ensure that both power input s are valid, verify tha t the green POWER ind icator on the front of the Communications module is on. Also verify that the –48V Power A and B LEDs are both green. If all these ind icators are not green, refer to

2-11

for the LED color code indications. Refer to

Troubleshooting

Table 2-11. Power LED Indications

LED State Indication

Power On At least one –48V power supply is connected Power Off No –48V power supply A or B connected –48V Power Supply A or B On (Green) Power supply is connected –48V Power Supply A or B Off No –48V power supply connected to the inputs

, if you are unable to obtain the correct indications

indicated by the LED

Chapter 5, Maintenance and

Table

–48V Power Supply A or B On (Amber) Polarity is reversed on the inputs indicated by the LED

SSU-2000e Turn-Up Procedures

To power-up the shelf, insert 5-amp fuses, one each for Power A and Power B, into the appropriate slot in the power distribution control panel.

SSU-2000e Normal Indications During Turn-Up

As the shelf powers up and begins normal operation, the LEDs on the front of each of the installed modules go through a sequence as follows:

 Clock Module 2E – The POWER LED turns green when the fuses are installed

in the main chassis and stays green. The STATUS LED blinks green and amber for approximately 10 to 15 seconds and then stays green. The SELECTED LED turns green on the selected clock module after the ACQUIRE LED on the clock module turns green. The WARMUP LED turns amber for approximately 30 seconds to 5 minutes then turns off and the ACQUIRE LED turns green. The ACQUIRE LED stays green 10 to 15 minutes until the module locks onto a signal, then the LED turns off. The LOCKED LED then turns green and stays green.

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 85

Page 86

Chapter 2 Installing the SSU-2000e

SDU-2000e Turn-Up Procedures

 Clock Module 3E – The POWER LED turns green when power is applied to the

unit and stays green. STATUS LED blinks green and amber for approximately 10 to 15 seconds and then stays green. The SELECTED LED turns green on the selected clock module after the ACQUIRE LED turns green. The WARMUP LED turns amber for approximately 30 seconds to 20 minutes then turns off and ACQUIRE turns green. The ACQUIRE LED stays green until the module locks onto a signal (10 to 15 minutes); then the LED turns off. The LOCKED LED turns green and stays green.

 Communications Module – The POWER LED turns green when power is

applied to the unit and stays green. The STATUS LED blinks green and amber for 10 to 15 seconds and then stays green. The –48V POWER LEDs A and B turn green to indicate that the power supplies are connected. If one of these LEDs are amber, the polarity of that power connection is reversed and needs to be switched. The three ALARM LEDs clear after approximately 1 minute. After initialization, if there are any alarms, it takes approximately 30 seconds to register and the ALARM LED turns amber. The ETHERNET LINK LED blinks green for approximately 30 seconds and stays green.

 Input Module – The POWER LED turns green when power is applied to the unit

and remains green while the system is powered up. The STATUS LED blinks green and amber for approximately 10 to 15 seconds and then stays green. The PORT 1 REF LED blinks for approximately 5 to 10 seconds and turns green for the reference input and off for the others. The INPUT LED blinks for 5 to 10 seconds and turns green for every valid input or amber for invalid inputs.

 Output Module – The POWER LED turns green when power is applied to the

unit and stays green. The STATUS LED blinks green and amber for 10 to 15 seconds and then stays green. The SOURCE LED turns green for the source clock, amber for an enabled clock that is not present and off for an enabled clock that is present (but not the source clock).

SDU-2000e Turn-Up Procedures

This section describes the procedures for powering up the SDU-2000e system and bringing the system on-line after completion of the system installation. After completing the turn-up procedures, perform the tests in Commissioning the SDU

2000e, on page 124, to ensure that the system is functioning properly.

SDU-2000e Power Control

The SDU-2000e expansion chassis is not equipped with a Power switch. Power to the SDU-2000e is controlled by two external power supplies that provide –48/60 VDC to the SDU-2000e main chassis (A-BUS and B-BUS) at connectors J101 and J102. To power-up the shelf, install the fuses and/or turn the power on to both power supplies.

86 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 87

Normal System Indications During Turn-Up

As the system powers up and begins normal operation, the indicators on the front of all installed Output modules should go through the following sequence:

 The POWER indicator turns green when power is applied to the unit and stays

green.

 The STATUS indicator blinks green and amber for approximately 10 to 15

seconds and then stays green.

 The SOURCE indicator turns green for source clock, amber for not source

clocks, and off for non-existent clocks.

The POWER indicator and both –48/60 VDC indicators on the installed Buffer modules should turn green and stay green.

After Turn-Up

Chapter 2 Installing the SSU-2000e

After Turn-Up

After completing the turn up procedures:

 Assign a System Administrator and any additional users to the system using the

procedures in Adding An Administrator User, on page 95.

 Make any required changes to the factory default configuration settings as

described in Chapter 3, Provisioning and Operating the SSU-2000e.

 Complete the commissioning tests in Chapter 4, Commissioning the SSU-2000e,

to ensure that the system is functioning properly.

 Refer to Chapter 5, Maintenance and Troubleshooting to clear any system

alarms that might occur.

This completes the turn-up procedures. See Chapter 3, Provisioning and Operating

the SSU-2000e, for instructions on connecting to the SSU-2000e and assigning a

system administrator and additional users (system is password protected). Then refer to Chapter 4, Commissioning the SSU-2000e, for test procedures to ensure the system is functioning properly, or to Chapter 5, Maintenance and

Troubleshooting, to clear any persistent system alarms.

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 87

Page 88

Chapter 2 Installing the SSU-2000e

After Turn-Up

88 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 89

Chapter 3 Provisioning and Operating the SSU-2000e

This chapter provides operating instructions and software provisioning procedures for the SSU-2000e system.

In This Chapter

 Controls and Indicators  Establishing a Connection With the SSU-2000e  Overview of the SSU-2000e Security System  Adding An Administrator User  Adding Users  Setting Security Parameters  Initial Provisioning  Checking Alarm Status  Factory Default (Basic) Configuration  Backing Up the Configuration  Restoring the Configuration

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 89

Page 90

Chapter 3 Provisioning and Operating the SSU-2000e

Controls and Indicators

SSU-2000e Status LED Indicators

All modules used in the SSU-2000e main chassis and in the optional SDU-2000e expansion chassis contain status LED indicators that provide a visual indication of module status. The Communications module provides both system and individual module status whereas all other modules provide individual module status only. For more information on individual module status LED indicators, refer to SSU-2000e

Turn-Up Procedures, on page 85, and Chapter 6, Clock Module Reference Data, Chapter 7, Input Module Reference Data, and Chapter 8, Output Module Reference Data.

SSU-2000e Operating Controls

The SSU-2000e contains three hardware operating controls:

 Two DCE/DTE select switches associated with the three EIA-232 ports. One

switch is located on the front of the Communications module and the second switch (S1) is located on the SSU-2000e connection panel. The DTE position is for connection to a PC and the DCE position is for connection to a modem.

 Reset (RST) switch on the Communications module.

Establishing a Connection With the SSU-2000e

You can connect to the SSU-2000e using either a serial connection or an Ethernet connection. To connect via a serial port, see Communicating by Serial Port, on page

91. If the SSU-2000e is connected to an Ethernet LAN, use the procedure described in Communicating by Ethernet, on page 92. Refer to Table 3-1 for the serial and Ethernet communications port assignments.

Table 3-1. Communications Port Assignments

Port # Function Protocol

Serial Ports (EIA-232)

A (J4) This port is user selectable as either an ICS or a TL1

interface. The port defaults to ICS upon initialization

B (J5) This port is user selectable as either an ICS or a TL1

interface. The port defaults to ICS upon initialization

Local (Comms Module)

90 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

This port is user selectable as either an ICS or a TL1 interface. The port defaults to ICS upon initialization

ICS (Default), TL1

Page 91

Table 3-1. Communications Port Assignments (Continued)

Port # Function Protocol

Ethernet Ports (Telnet)

Chapter 3 Provisioning and Operating the SSU-2000e

Establishing a Connection With the SSU-2000e

23 This port is user selectable as either an ICS or a TL1

interface. The port defaults to ICS upon initialization 123 This port is designated for NTP only NTP 161 This port is designated for SNMP Interactive SNMP Interactive 162 This port is designated for SNMP Trap transmission SNMP Trap 2000 This port is designated for TL1 only TL1

ICS (Default), TL1

Communicating by Serial Port

Three EIA-232-C ports are available on the SSU-2000e. Attach a PC with terminal emulation software to one of the ports as shown in Figure 3-1 (this example shows a connection to the local port on the front of the Communications module).

Figure 3-1. Direct Connection Using the Serial Port

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 91

Page 92

Chapter 3 Provisioning and Operating the SSU-2000e

Establishing a Connection With the SSU-2000e

1. Connect one end of the cable to the serial port on the computer or terminal and the other to the appropriate connector on the SSU-2000e.

2. Set the DTE/DCE switch S1 on the connection panel for the type of cable (straight-through or modem).

3. Configure the emulation software for 8 data bits, no parity, 1 stop bit, and 9600 baud rate.

4. Start the terminal emulation software and press Enter. The system prompt

should appear. If it does not, recheck each step in this procedure.

5. For the initial installation, create an Administrator-level user as described in

Adding An Administrator User, on page 95, before proceeding with the Ethernet

setup.

Communicating by Ethernet

To communicate with the SSU-2000e using an Ethernet LAN, you must first configure the Ethernet port. This section describes how to configure the Ethernet port and then connect to the SSU-2000e using the Ethernet port.

When you connect to the SSU-2000e via Ethernet port 2000 (decimal) using a Telnet-type application, the session opens in TL1 mode. Up to four sessions (users) can be connected to port 2000 at one time. Once you are connected, you must log in using the ACT-USER command with a user name and password (if security is active on the unit).

To log off the user and exit from an Ethernet session, type Another user can then open a new session by using the ACT-USER command.

CANC-USER:::0;.

To log off the user, exit from an Ethernet session, and close the Ethernet connection to port 2000, type

EXIT:::0;. The next user must first connect to port 2000 and

then log in using the ACT-USER command.

Configuring the Ethernet Port

Use the following procedures to configure the SSU-2000e Ethernet parameters (IP Address, Subnet Mask, and Gateway Address).

1. Establish a direct serial connection to the SSU-2000e as described in

Communicating by Serial Port, on page 91.

2. Provision the IP, Gateway, and Subnet addresses for the SSU-2000e. The IT department or site administrator for your location can recommend specific addresses for these parameters. Use the format xxx.xxx.xxx.xxx to enter the address parameter.

92 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 93

Chapter 3 Provisioning and Operating the SSU-2000e

Overview of the SSU-2000e Security System

ICS commands:

Type

IP ADDR [ip address], then press Enter.

Type

IP GATEWAY [gate address], then press Enter. IP SUBNET [subnet address], then press Enter.

Type

TL1 command:

SET-PRMTR-IP:::123::[ip address],[gate address],[subnet address];

3. Restart the Communications module:

ICS command:

Type

restart 1A02, then press Enter.

TL1 command:

RST-MODULE::S1A2:123;

4. Verify that the information is correct:

ICS command:

Type

ip, then press Enter.

TL1 command:

RTRV-PRMTR-IP:::123;

Connecting through the Ethernet LAN

After the Ethernet port is configured, use the following procedure to connect to it:

1. Ensure that the SSU-2000e is connected to a LAN. See Making Ethernet

Connections, on page 65 for details.

2. Telnet from your PC to the IP address assigned to the SSU-2000e.

3. Type your user name and press the Enter key. If you are not assigned as a user in the system, contact the System Administrator for your SSU-2000e.

4. Enter your assigned password and press Enter. The system prompt appears.

Overview of the SSU-2000e Security System

The operating software of the SSU-2000e includes a subset of GR-815 security requirements, including user lockout, password aging, and login failure attempts. New commands allow an Administrator-level user to query the security log, set the login failed attempts threshold, set user lockout timer, and set the password-aging timer. New commands also allow you to ba ck up and restore the configuration in th e shelf. See the SSU-2000e Technical Reference for details on the security commands.

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 93

Page 94

Chapter 3 Provisioning and Operating the SSU-2000e

Overview of the SSU-2000e Security System

Passwords must have at least one alphanumeric, one numeric, and one special (punctuation, for example) character. The password can be up to 10 characters long. The user must create a new password after the specified password aging period has elapsed; the new password cannot be the same as any of the previous three passwords. The user must confirm entry of a new password by re-typing the password.

If a user fails to enter a correct password in a preset number of attempts, that user is locked out from further attempts to log in for a specified amount of time, and an entry is made in the security log. An Administrator-level user can set the number of attempts, the lock-out period, and password aging.

A security log maintains a record of each login attempt, successful logins, and log-outs. Other events stored in the log including adding and changing users, changes to a user’s profile (password and/or access level), enabling and disabling a user, or changes to the password aging p eriod. The log records the date and time of each entry, the user ID, and the session type. Passwords are not stored in the security log. This log is stored in non-volatile memory, and cannot be modified or deleted by any user.

In order to use the security features, the hardware and firmware in the SSU-2000e must be as shown in Table 3-2.

Table 3-2. Firmware Requirements for Security Features

Module

Communications module

Clock modules

Note:

The hardware revision is on a label locate d on the front panel. You can disp lay the hard ware

revision by issuing the TL1 command RTRV-INV, or the ICS command CONFIG.

Japan Composite Clock

Module Part

Number

23413012-00x-0 A.00 or higher 14313012-000-5 Rev. M.00

23413015-00x-0 23413016-000-0

Hardware Revision

Required

A.00 (JCC: B.00) or higher A.00 (JCC: A.10)

or higher

Firmware Code Part

Number

14313015-000-5 Rev. M.00

The SSU-2000e system software allows you to set up a list of users with one of five access levels; each level has an increasing level of access to system functions and commands. Each incremental access level incorporates all of the options from the lower numbered access levels and additional options at that level. For instance, a User-level user does not have as many options available as a Technician-level user.

An Administrator-level user assigns the access level to each user when the user id and password is created. Table 3-3 summarizes each access level, ID number, and the operator privileges for each level.

94 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 95

Chapter 3 Provisioning and Operating the SSU-2000e

Table 3-3. User Access Levels

Level ID Description

Idle 0 Access level 0 is available when no user is logged in. This level allows

Idle-level users to view a list of available commands (HELP), syntax, sof tware version number, unit id, or to login.

User 1 Users at the User level can execute level 0 commands and view information

about the current configuration and operation, and change communication settings such as line termination and echo. Changes made by a User-level user remain in effect only until the user logs out.

T e chnician 2 Users at the T echnician level (CRAFT persons) can perform levels 0 through 1

functions, and can read or set all installation functions.

Supervisor 3 Supervisor-level users can execute all commands at levels 0 through 2, and

can read or set all functions.

Administrator 4 Administrator-level users can execute all levels of commands; they can view

and set software configurations; they can also add, delete, or modify the user table, or log off any user from any port.

Adding An Administrator User

You must add an Administrator-level user to the user list when you log in for the first time. The Administrator user performs initial setup and can assign user privileges and access codes as needed, as well as configure all system parameters

Overview of the SSU-2000e Security System, on page 93, for more information on

user access levels.

Caution: You must add the administrator user and password before adding any other users. If you add a user that is not at the administrator security level before adding the administrator, you will not be able to log into the unit at that level again without a service call.

Perform the following steps to add an Administrator-level user to the system.

1. Connect a computer to the SSU-2000e using the procedure in Communicating

by Serial Port, on page 91. The

2. Type

admin at the username prompt for the first-time system login (otherwise

enter your username) and press Enter. The system prompts for a password.

SSU-2000e> prompt appears.

. Refer to

3. Press the Enter key for the first-time system login (otherwise enter your password and press Enter). The system prompt appears.

4. Type

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 95

user add and press Enter. The system prompts you for a username.

Page 96

Chapter 3 Provisioning and Operating the SSU-2000e

Adding Users

5. Enter a “username” and press Enter. The name you enter will be the log-in name for the system administrator . You can use up to 20 characters for the user name. The system prompts you for a password.

6. Enter a “password” and press Enter. Passwords must have at least one alphanumeric, one numeric, and one special (punctuation, for example) character. The password can be up to 10 characters long. The password you enter will be the log-in password for the system administrator. The system prompts you to confirm the password by retyping it.

7. Retype the password and press Enter. The system prompts for an access level.

8. Type

4 and press Enter. This selects the administrator access level. The sy stem

prompt appears.

9. Type

10.Type

bye and press Enter to log off the system.

Enter. This verifies that the account exists.

11.Type

bye and press Enter to log off the system.

Adding Users

Only an Administrator-level user can add new users to the SSU-2000e user list. You can use ICS or TL1 commands.

Using ICS Commands

1. Connect a computer to an ICS port on the SSU-2000e and log in using an Administrator-level user name and password, as described in Logging In to the

SSU-2000e, on page 102.

2. Type

USERS ADD then press Enter to create a new user account. The system

prompts for the new username.

3. T ype in the new username, then press Enter. You can use up to 20 characters for the username. The system prompts for the new user’s password.

4. T ype in the new user’s password and press Enter. Passwords must have at least one alphanumeric, one numeric, and one special (punctuation, for example) character. The password can be up to 10 characters long. The system prompts you to confirm the password by retyping it.

5. Type in the new user’s password and press Enter. The system prompts for an access level.

96 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 97

Chapter 3 Provisioning and Operating the SSU-2000e

Adding Users

6. Type in the new user’s access level (a number between 1 and 4, inclusive), and press Enter. The following text shows the dialog for creating a new level-1 user with the name david1:

SSU_2000e->users add Username: DAVID1 Password: ******* Confirm: ******* Access: 1 2006-02-22T16:49:55 1A02 Rep Add User, DAVID1, TELA SSU_2000e+>

7. Type users and press Enter to display the user table. Th e system responds with a list similar to the following:

2006-02-23T22:01:45 ID: SSU2000e, Name: SSU_2000e Password Aging: Enable User Lockout: Enable

User Name Level User Password DaysLeft Lock

-------------------- ----- ---- -------- -------- ---ADMIN 4 ENA ALIVE 23 NO DAVID 4 ENA ALIVE 28 NO DAVID1 1 ENA ALIVE 29 NO SSU_2000e->

Using TL1 Commands

1. Connect a computer to port 2000 on the SSU-2000e and log in using an Administrator-level user name and password, as described in Logging In to the

SSU-2000e, on page 102.

2. Type

SET-USER:::123::ADD,FRANK1,ABC123!,1; to add a user named FRANK1

with a password of

SSU_2000e 06-02-21 20:07:21 M 123 COMPLD "\"PASSWORD CONFIRMATION REQUIRED, SET-PWD-CONFIRM\"" ;

ABC123! at the User level. The system responds with:

3. Type SET-PWD-CONFIRM:::123::ABC123!; to confirm the new password. You must issue the SET -PWD-CONFIRM command immediately after the SET -USER command in order to validate the SET-USER command. The system responds with:

SSU_2000e 06-02-21 20:21:41

A 000001 REPT EVT

"S1A02:NA,193,NSA,06-02-21,20-21-41:\"Add User, FRANK1, TL1B\"" ;

4. Type RTRV-USER:::123; to display a list of users in the system. The system responds with:

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 97

Page 98

Chapter 3 Provisioning and Operating the SSU-2000e

Setting Security Parameters

SSU_2000e 06-02-22 14:32:40

M 123 COMPLD

"ADMIN,4,ENA,ALIVE,23,NO" "DAVID,4,ENA,ALIVE,28,NO" "DAVID1,1,ENA,ALIVE,29,NO" "FRANK1,1,ENA,ALIVE,29,NO"

;

where the format for the list of users is username, level, password State,

password days left, lockout

Setting Security Parameters

Only an Administrator-level user can access security parameters for the SSU-2000e. You can use ICS or TL1 commands to set the security parameters, which include the following:

 Setting the Number of Failed Attempts Counter – if a user cann ot lo g in correctly

within this number of attempts, that user is then prevented from further attempts for the period specified in the Lockout time parameter.

 Setting the Lockout Time – When a user has e xceeded the number of failed login

attempts, that user is prevented from further attempts to log in for the period specified in this parameter.

 Setting the Password Aging – A user’s password is valid for the number of days

specified in this parameter . If the user attempt s to log in after this number of days, the user must create a new password.

 Viewing the Security Log – The security log contains information related to the

security of the system, such as the login attempts, successful logins, logouts, etc.

 Setting User Parameters, such as:

– Changing a Password – Changing Access Level – Deleting a User – Setting a Temporary Password – Enabling, Disabling, and Unlocking Users

Using ICS Commands

1. Connect a computer to a serial port on the SSU-2000e and log in using an Administrator-level user name and password, as described in Logging In to the

SSU-2000e, on page 102.

2. Type

SECURITY FAIL 3 and press Enter to set 3 as the number of failed login

attempts before disabling the user account.

3. Type

SECURITY LOCKOUT 60 and press Enter to set the lockout time to 60

seconds.

98 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006

Page 99

Chapter 3 Provisioning and Operating the SSU-2000e

Setting Security Parameters

4. Type SECURITY AGING 30 and press Enter to set the password to expire in 30 days.

5. Type

SECURITY LOG 10 then press Enter to display the last 10 entries in the

Security log. The log appears as shown:

SSU_2000e->security log 10 2006-02-22T18:41:29 ID: SSU2000, Name: SSU_2000e Time Stamp Description Information

------------------- ----------------- -----------------------2006-02-22T17:11:04 LOGIN ENET,TL1,DAVID1 2006-02-22T17:12:18 CHANGE_PASSWORD ENET,TL1,DAVID1 2006-02-22T17:16:34 LOGIN_FAIL ENET,TL1,ADMIN 2006-02-22T17:21:20 LOGOUT ENET,TL1,DAVID1 2006-02-22T17:31:48 LOGIN_FAIL ENET,TL1,ADMIN 2006-02-22T17:47:01 LOGIN_FAIL ENET,TL1,ADMIN 2006-02-22T18:02:10 LOGIN_FAIL ENET,TL1,ADMIN 2006-02-22T18:17:19 LOGIN_FAIL ENET,TL1,ADMIN 2006-02-22T18:32:32 LOGIN_FAIL ENET,TL1,ADMIN 2006-02-22T18:41:24 LOGIN ENET,ICS,DAVID SSU_2000e->

Changing a User’s Password

1. Type

USERS PWD then press Enter to change a password. The system prompts

for the user name that is to receive the new password.

2. Type the user name, then press Enter. The system prompts for the new password.

3. Type the new password, then press Enter. The system prompts you to confirm the new password.

4. Retype the new password, then press Enter. If you do not type the new password exactly the same, the command fails.

Setting a Temporary Password

An Administrator-level user can create a temporary password for a user. When a user logs in using the temporary password, that user must create a new password before continuing.

1. Type

USERS TEMPPWD then press Enter to create a temporary password. The

system prompts for the user name that is to receive the new password.

2. Type the user name, then press Enter. The system prompts for the password.

3. Type the new password, then press Enter. The system prompts you to confirm the password.

4. Retype the new password, then press Enter. If you do not type the new password exactly the same, the command fails.

12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 99

Page 100

Chapter 3 Provisioning and Operating the SSU-2000e

Setting Security Parameters

Changing a User’s Access Level

1. Type

USERS ACCESS then press Enter to change a user’s access level. The

system prompts for the user name that is to receive the new access level.

2. Type the access level (1 through 4), then press Enter.

Deleting a User

1. Type

USERS DEL then press Enter to delete a user from the user table. The

system prompts for the user name that you want to delete.

2. Type the user name, then press Enter. The system deletes the user from the user table.

Enabling, Disabling, and Unlocking Users

An Administrator-level user can enable or disable a user from accessing the SSU-2000e without removing the user name from the user table. If a user exceeds the number of failed attempts to log in, then the user name is locked for a period of time. An Administrator-level user can unlock the user name and allow the user to attempt to log in, overriding the Lockout Time parameter.

1. Type

USERS DISABLE then press Enter to disable a user from accessing the

SSU-2000e. The system prompts for the user name that you want to disable.

2. Type the user name, then press Enter. The system disables the user.

3. Type

USERS ENABLE then press Enter to allow a user to access the SSU-2000e.

The system prompts for the user name that you want to enable.

4. Type the user name, then press Enter. The system enables the user.

5. Type

USERS UNLOCK then press Enter to unlock a user name. The system

prompts for the user name that you want to unlock.

6. Type the user name, then press Enter. The system unlocks the user.

Using TL1 Commands

1. Connect a computer to port 2000 on the SSU-2000e and log in using an Administrator-level user name and password, as described in Logging In to the

SSU-2000e, on page 102.

2. Type

SET-PRMTR-SECU:::123::3,60,60; to set to 3 the number of failed login

attempts before disabling the user account, to set the lockout time to 1 minute, and to set the password to expire in 60 days. The system responds with:

SSU_2000e 06-02-21 20:27:35

A 000002 REPT EVT

"S1A02:NA,215,NSA,06-02-21,20-27-35:\"Security, Lockout, 60, TL1B\""

;

100 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006