Symmetricom TimeSource 3100 User Manual

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TimeSource 3100

GPS Primary Reference Source

User Guide

Revision K – December 2005

Part Number 097-72020-01

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.

Table of Contents

Contents

How to Use This Guide

Chapter 1 Overview of the TimeSource 3100

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Global Positioning System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Physical Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Roof Antenna. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

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

Antenna. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

IF Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Local Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Clock Extractors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

NTP TimeServer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Network Time Protocol Password Activation. . . . . . . . . . . . . . . . . . . . . . . . . . . 23

BesTime Ensemble Timing Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

E1 or Analog Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Eight Mixed E1/T1 Outputs (990-72020-06 Systems Only) . . . . . . . . . . . . . . . 23

Eight Additional E1 Outputs (990-72020-02 Systems Only) . . . . . . . . . . . . . . . 24

TOD Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

IRIG-B TOD Outputs (990-72020-05 Systems Only) . . . . . . . . . . . . . . . . . . . . 24

1 PPS Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

10 MHz Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Two ESCIU Ports (990-72020-04 Systems Only). . . . . . . . . . . . . . . . . . . . . . . 24

Alarm Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Communications Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Ethernet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Passthrough . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Alarm Programmability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Startup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Bridging/Holdover Behavior. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Time Figure of Merit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Chapter 2 Engineering & Ordering

Site Survey. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Lightning Suppressor Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Antenna Location Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Earth Ground Location Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Antenna Cable Choices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Remote Oscillator Cabling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

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IRIG-B TOD (990-72020-05 Systems Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

RJ-422–to–RJ-232 TOD Converter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Shelf Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Standard System (Two E1 or 2.048 MHz Outputs). . . . . . . . . . . . . . . . . . . . . . 40

With Eight Additional E1 or 2.048 MHz Outputs . . . . . . . . . . . . . . . . . . . . . . . . 41

With Eight Additional Mixed E1/T1Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

With Two E1 Synchronization Insertion (ESCIU) Ports. . . . . . . . . . . . . . . . . . . 42

With Four IRIG-B TOD Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

User-Supplied Tools and Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

For Antenna Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

For Shelf Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Outputs, Power, and Miscellaneous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Chapter 3 Installing the TimeSource 3100

Unpacking the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Installing the Antenna. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Installing the Shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Installing Output Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Rack Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Making Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Frame Ground. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Making Power Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Making GPS Antenna Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Making 10 MHz Output Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Making E1 or Analog Synchronization Output Connections . . . . . . . . . . . . . . . 57

Making 1 PPS Output Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Connecting E1 or Analog Reference Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Connecting Remote Oscillator Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Installing a Module for Additional E1 or Analog Outputs. . . . . . . . . . . . . . . . . . 61

Installing the Mixed E1/T1 Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Installing the IRIG-B TOD Output Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Installing the ESCIU Port Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Connecting the Time of Day Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Making Ethernet Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Connecting to Communication Port 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Connecting to Communication Port 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Connecting Alarm Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Making Craft Port Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Powering Up the Shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Installing TimeWizard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Factory Default Values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

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Chapter 4 TL1 Reference

Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Command Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Response Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Autonomous Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

Report Alarm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

Report Event . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

Tasks/Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Activate User. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Cancel User. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Copy Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Delete Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

Delete User Security. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Edit Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Edit Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Edit Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Enter Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

Enter User Security. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

Initialize Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

Initialize Register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

Initialize System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

Operate Alarm Cutoff All . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

Retrieve Alarm All . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

Retrieve Alarm Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Retrieve Communication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

Retrieve Condition All . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

Retrieve Condition Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

Retrieve Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

Retrieve GPS Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

Retrieve Header . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

Retrieve Inventory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

Retrieve Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147

Retrieve Performance Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

Retrieve User Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157

Set Source Identifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158

Chapter 5 Troubleshooting

Troubleshooting with Front Panel Items. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

Troubleshooting with Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164

Replacing Cards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

Returning the TimeSource. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171

Repacking the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

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Equipment Return Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

User Guide Updates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173

Chapter 6 Specifications

Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176

Communication Ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176

Port 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176

Port 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177

Craft Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177

Ethernet Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178

Time of Day Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179

Network Time Protocol (NTP) Type 4, Format 2 Driver Format . . . . . . . . . . . 179

Cisco Systems Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180

IRIG-B TOD Outputs (990-72020-05 System Only) . . . . . . . . . . . . . . . . . . . . 181

Remote Oscillator Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181

E1 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182

Analog 2.048 MHz Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183

1 PPS Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184

E1 Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185

Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185

Additional E1 Outputs (990-72020-02 System Only) . . . . . . . . . . . . . . . . . . . 186

Analog 2.048 MHz Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187

Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187

Additional Analog Outputs (990-72020-02 System Only) . . . . . . . . . . . . . . . . . . . . 188

Mixed E1/T1 Outputs (990-72020-06 System Only) . . . . . . . . . . . . . . . . . . . . . . . . 189

E1/T1 Common. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189

E1 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189

T1 Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190

10 MHz Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190

ESCIU Ports (990-72020-04 System Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191

Office Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192

Connector Panel Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192

Front Panel Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192

Front Panel Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192

Simple Network Time Protocol. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

Shelf Mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194

Shelf Environmental. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194

vi TimeSource 3100 User’s Guide 097-72020-01 Revision K – December 2005

List of Figures

Figures

1-1 TimeSource 3100 Shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

1-2 The GPS Antenna. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

1-3 Block Diagram of the TimeSource 3100. . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

1-4 ESCIU Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

1-5 TimeSource 3100 Passthrough Function . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

2-1 Locating the GPS Antenna. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

2-2 GPS Antenna Location Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

2-3 Sample Rooftop Antenna Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

2-4 Rack Mounting Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

3-1 Antenna-to-Shelf Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

3-2 Installing the Antenna Bracket on a Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

3-3 Installing the Antenna Bracket on a Post . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

3-4 Attaching the Antenna to the Bracket. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

3-5 Assembling the Lightning Suppressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

3-6 Location of the Options I/O Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

3-7 Rack Mounting Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

3-8 Connector Panel and Front Panel Connectors. . . . . . . . . . . . . . . . . . . . . . . 54

3-9 Terminal Block Connections on the Connector Panel. . . . . . . . . . . . . . . . . . 55

3-10 E1 or Analog Output Wire-Wrap Connections . . . . . . . . . . . . . . . . . . . . . . . 57

3-11 E1 or Analog Output Wire-Wrap Connections . . . . . . . . . . . . . . . . . . . . . . . 58

3-12 DCD Shelf, Isolation Module, and TimeSource 3100 Connections . . . . . . . 60

3-13 Eight E1 or Analog Output Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

3-14 Eight Mixed E1/T1 Output Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

3-15 IRIG-B TOD Output Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

3-16 Connector Layout of ESCIU Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

3-17 ESCIU Cutover without Jacks (Out-of-Service) . . . . . . . . . . . . . . . . . . . . . . 65

3-18 ESCIU Cutover with Jacks (In-Service) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

3-19 RS-422 to RS-232 TOD Converter Mounting Plate . . . . . . . . . . . . . . . . . . . 69

3-20 RJ-45 to DB-25 TOD Converter Connections. . . . . . . . . . . . . . . . . . . . . . . . 69

3-21 Alarm Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

3-22 The TimeWizard Main Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

3-23 The Download GPS.hex Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

3-24 The Load GPS File Dialog Box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

3-25 The Download Progress Dialog Box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

3-26 The Status Information Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

3-27 The Set the Alarm Parameters Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

3-28 The View the Alarm Parameters Window. . . . . . . . . . . . . . . . . . . . . . . . . . . 88

3-29 The Exit Application Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

3-30 The Save Log File Dialog Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

4-1 Command Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

4-2 Completed Response Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

4-3 Deny Response Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

4-4 Alarm Conditioning Flow Chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

5-1 Controls and Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

5-2 Front of Shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171

6-1 NTP Type 4 Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179

6-2 NTP Type 4 Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180

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List of Figures

viii TimeSource 3100 User’s Guide 097-72020-01 Revision K – December 2005

List of Tables

Tables

1-1 Timing Source Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

2-1 Isolation Kits for DCD Shelves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

3-1 DCD Connections to the TimeSource 3100 . . . . . . . . . . . . . . . . . . . . . . . . . . .59

3-2 TOD Connector Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68

3-3 Converter DB-25 Connector Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

3-4 Ethernet RJ-45 Connector Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70

3-5 COM 1 Connector Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70

3-6 COM 1 Connector Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71

3-7 COM 1 Connector Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

3-8 Alarm Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87

3-9 Parameter Factory Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

4-1 Parameter Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96

4-2 Commands for Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100

5-1 Front Panel Items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .161

5-2 Message Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .164

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List of Tables

x TimeSource 3100 User’s Guide 097-72020-01 Revision K – December 2005

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 Document

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How to Use This Guide

Purpose of This Guide

The TimeSource 3100 User’s Guide describes the procedures for unpacking, installing, using, maintaining, and troubleshooting the Symmetricom TimeSource

3100.

Who Should Read This Guide

Chapter 1, Overview of the TimeSource 3100, and Chapter 2, Engineering & Ordering, are written for non-technical audiences who need general information

about the product. Chapter 3, Installing the TimeSource 3100 and subsequent chapters contain technical information about the product. Other chapters and appendixes describe installation, maintenance, and configuration instructions or details primarily intended for qualified maintenance personnel.

Structure of This Guide

This guide contains the following sections and appendixes:

Chapter, Title Description

Chapter 1, Overview of the TimeSource 3100

Chapter 2, Engineering & Ordering

Chapter 3, Installing the TimeSource 3100

Chapter 4, TL1 Reference

Chapter 5, Troubleshooting Contains preventive and corrective maintenance, and

Chapter 6, Specifications Lists the specifications for the TimeSource 3100 Index Provides references to individual topics within this guide.

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

Lists the part number and ordering procedure for all TimeProvider parts and accessories.

Contains procedures for unpacking and installing the product. Includes a list of the factory default values for ha rd wa re and software parameters

Describes TimeProvider after installing the unit.

troubleshooting procedures for the product.

the TL1 commands required to provision the

xii TimeSource 3100 User’s Guide 097-72020-01 Revision K – December 2005

How to Use This Guide

Conventions Used in This Guide

This guide uses the following conventions:

 Acronyms and Abbreviations – Terms are spelled out 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...

TimeSource 3100 User’s Guide

GPS CRITICAL TS3100

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

Enter

Press ;

TimeSource Username:

PING STATUS

The title of a document.

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

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 pro mpt 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-sensitiv e operating systems exactly as shown.

... it means:

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

recommend...

A word or term given special emphasis.

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.

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How to Use This Guide

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 caut ion s . 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 indi cat e a lon g- te rm health hazard.

ESD Caution: To avoid personal injury and electrostatic discharge (ESD) damage to equipment, do not disregard 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, electr ical 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, operation, or maintenance procedures, practices, conditions, or statements, that alert you to importa nt information, which may make your task easier or increase your understanding.

xiv TimeSource 3100 User’s Guide 097-72020-01 Revision K – December 2005

How to Use This Guide

Chapter 1 Overview of the TimeSource 3100

This chapter provides an overview of the global positioning system, and a physical and functional description.

In This Chapter

 Overview  Physical Description  Roof Antenna  Functional Description

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Chapter 1 Overview of the TimeSource 3100

Overview

The TimeSource 3100 is a Primary Reference Source (PRS) that receives and processes signals from GPS satellites, and outputs Stratum 1 synchronization signals traceable to UTC. Ti meSource 3100 applications include synchronization for central offices, radio base stations, transmission nodes, and other instances where a primary reference source can improve the performance of telephony network facilities.

The TimeSource 3100 creates timing outputs by ensembling signals from several sources. The sources include GPS signals, an onboard local oscillator , and op tional E1 or analog and remote oscillator signals. Timing outputs created from the ensemble are composed of the most stable and least noisy parts of each input. Synchronization outputs are delivered in a framed, all-ones, E1 or 2.048 MHz analog signal, a 1 pps signal, T1 signals (optional), and time of day (TOD) signals.

The TimeSource 3100 minimizes timing impairments, such as jitter and wander, that are created by network and transmission systems. The synchronization timing is traceable to the GPS, which provides the highest level of synchronization for telephony networks. The TimeSource 3100 with its GPS input is a stand-alone office PRS. With the optional inputs ensembled, overall system performance is improved, and holdover is extended if GPS signals become disrupted.

Global Positioning System

The United States Government developed the GPS navigation system. It is a satellite-based, radio navigation aid designed to provide global, all-weather, precise navigation and timing capability to users 24 hours a day.

The satellites, circling the earth at approximately 20.197 km, are arranged in 6 orbits with 4 operational satellites in each orbit. Each satellite has an orbital period of approximately 12 hours. This configuration assures that a minimum of 4 satellites, and as many as 12, are in view anywhere in the world at all times.

The TimeSource 3100 tracks all satellites wit hin its field o f view . The p erformance of each tracked satellite is observed and compared to th e others, and available for use in the timing solution. A satellite with unacceptable performance data is dropped from the timing solution.

Physical Description

The TimeSource 3100 consists of a shelf, a plug-in card, an antenna, cables, hardware, and software. Optional system configurations include eight additional E1 or analog outputs, two E1 synchronous clock insertion unit (ESCIU) ports, four IRIG-B TOD timing outputs, or eight mixed E1/T1 outputs.

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Chapter 1 Overview of the TimeSource 3100

Physical Description

The shelf (Figure 1-1) can be mounted in a 48 cm rack or an ETSI 53.5 cm rack. Other than a communications connector on the front panel, all connectors are at the connector panel.

Figure 1-1. TimeSource 3100 Shelf

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Chapter 1 Overview of the TimeSource 3100

Roof Antenna

The antenna (Figure 1-2) is encased in weather-resistant plastic housing for outdoor installation, usually on a roof. A single coaxial cable carries signals and power between the antenna and the shelf.

Figure 1-2. The GPS Antenna

Functional Description

Overview

Figure 1-3 shows the main functions of the TimeSource 3100. The center of the

TimeSource 3100 is the Ensemble Timing Generator, which uses the BesTime algorithm to analyze the phase and frequency relationships, individually and collectively, of the timing sources. Each type of timing source has a particular characteristic that gives it an advantage over other sources, as listed in Table 1-1.

The BesTime algorithm uses the best characteristic of each source to produce an output signal with greater overall accuracy and stability than any single source. The contribution of a source is based on its deviation from the weighted average of all the sources. The more accurate a source, the more weight it has in the final output. Every source is under constant evaluation and its contribution subject to periodic adjustment. The output is essentially the best performance of the best source.

20 TimeSource 3100 User’s Guide 097-72020-01 Revision K – December 2005

Table 1-1. Timing Source Characteristics

Source Characteristic

Local Oscillator Short term stability E1 Line Intermediate term stability External Oscillator Intermediate term stability GPS Signal Long term stability

Chapter 1 Overview of the TimeSource 3100

Functional Description

Figure 1-3. Block Diagram of the TimeSource 3100

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Chapter 1 Overview of the TimeSource 3100

Functional Description

Antenna

The antenna housing includes a volute antenna, GPS receiver, amplifier, and intermediate-frequency (IF) downconverter.

The GPS Receiver extracts a clock signal from the GPS satellite signals. The receiver can process the signals from all satellites in view, while simultaneously using the Earth location of the receiver and other factors to determine an accurate clock signal.

An amplifier in the antenna provides 23 dB of signal gain. A downconverter converts the L-band GPS signal to IF for long-distance transport

on the coaxial antenna cable. The antenna cable provides 125 mA power from the shelf to the antenna, and transports GPS satellite IF signals from the antenna to the shelf.

IF Interface

An IF interface accepts the signals from the antenna, and provides the clock information to the BesTime Ensemble Timing Generator.

Local Oscillator

A digitally controlled, oven-controlled crystal oscillator (OCXO) develops a highly stable local oscillator signal, independent of factors that exist outside the shelf. This signal is sent to the BesTime Ensemble Timing Generator.

Clock Extractors

A clock extractor circuit extracts a timing signal from each external reference source (External sources, other than the GPS antenna, are optional). The extracted timing signal is sent to the BesTime Ensemble Timing Generator.

Power Supply

A power converter filters and converts -48 volts dc power supplied to the shelf into the voltages required by the shelf.

NTP TimeServer

The TimeServer is a Simple Network Time Protocol (SNTP) device. The SNTP TimeServer function is provided via the TimeSource Ethernet interface and associated IP address. User software requests UTC time of day via NTP protocol. The TimeSource SNTP server responds with current UTC time. The TimeServer is compatible with the SNTP RFC-1769 format.

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Chapter 1 Overview of the TimeSource 3100

To enable the SNTP feature, a password must be entered using the ED-EQPT TL1 command. If a user makes a fourth attempt of an incorrect password entry, the TimeServer will lock out the user for 1 hour.

Functional Description

Network Time Protocol Password Activation

Use of the Simple Network Time Protocol (SNTP) feature requires activation with a password. Activation is accomplished through receipt of a Network Time Protocol Activation Certificate from Symmetricom. This certificate cont a ins the unit purch ase order number, unit model number, unit activation date, unit serial number, and unit activation key. The unit activation key is the password that enables the SNTP feature. To activate the SNTP feature, enter the TL l command printed on the activation certificate. Once activated, this feature will be permanently enabled. To order the SNTP feature, contact the local Symmetricom sales representative.

BesTime Ensemble Timing Generator

Clock signals from the GPS antenna (via the IF interface), the local oscillator, the optional external sources (E1 span lines and remote oscillators) are used as sources by the BesTime algorithms in the BesTime Ensemble Timing Generator. The signals are analyzed for MTIE, TDEV, and other phase and frequency characteristics.

The BesTime Ensemble Timing Generator uses mathematical models to analyze each clock. The ensemble algorithms use the comparisons and analyses to generate a highly stable timing signal, which uses the best qualities of all inputs.

E1 or Analog Outputs

The BesTime Ensemble Timing Generator provides the timing for the E1 or analog (2.048 MHz) timing signal available at the E1 OUT A and B connectors. E1 is provided in a framed, all-ones format, which can be set to CAS, CAS4, CCS, or CCS4 framing. 2.048 MHz is provided in accordance with G.703/10.

Eight Mixed E1/T1 Outputs (990-72020-06 Systems Only)

This option enables a user to mix any combination of E1 and T1 outputs. A user can also use any combination of framing. For El, CCS, CAS, CCS with CRC4, and CAS with CRC4 can be used per G.703 table 6. For T1, D4 or ESF can be used per ANSI T1.101. In addition, there is support for analog (2.048 MHz) per G.703 table 10 and support for synchronization status messaging (SSM) per TR-33 for El and T1. The module mounts in the OPTIONS I/O mountings on the connector panel.

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Chapter 1 Overview of the TimeSource 3100

Functional Description

Eight Additional E1 Outputs (990-72020-02 Systems Only)

This option provides a module for eight additional E l or analog (2.048 MHz) outputs. The module mounts in the OPTIONS I/O mountings on the connector panel. These outputs function the same as the standard E l outputs.

TOD Output

The BesTime Ensemble Timing Generator provides the timing for the TOD timing signal available at the RJ-45 connector, which provides time code to devices compatible with NTP Type 4 or Cisco format.

IRIG-B TOD Outputs (990-72020-05 Systems Only)

This option provides a module for four additional TOD output s in IRIG-B format. The module mounts in the OPTIONS I/O mountings on the connector panel. The BesTime Ensemble T iming Gene rator provides the timing for the T OD timing signal, which provides timing code to devices compatible with IRIG-B.

1 PPS Output

The BesTime Ensemble Timing Generator provides the timing for the 1 pulse-per-second timing signal available at the 1 PPS connector , which can be used for application-specific requirements.

10 MHz Output

The BesTime Ensemble Timing Generator provides timing for the 10 MHz timing signal available at the 10 MHz connector, which can be used for local cellular frequency or testing purposes.

Two ESCIU Ports (990-72020-04 Systems Only)

This option provides a module for two E1 ports. The module mounts in the OPTIONS I/O mountings on the connector panel. E1 traffic-carrying signals are synchronized using the BesTime Ensemble Timing Generator. Jitter and wander are also removed before sending the E1 signals to network elements.

If an alarm condition or power failure occurs, relays allow the E1 signals to bypass the system (see Figure 1-4).

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Chapter 1 Overview of the TimeSource 3100

Figure 1-4. ESCIU Signals

Functional Description

Alarm Interface

The microprocessor delivers alarms to normally open dry-contact type connections. Alarms are also indicated by the front-panel status lamps.

Communications Ports

Three RS-232 serial communications ports carry TL1 commands, responses, and autonomous messages between the TimeSource 3100 and an external terminal.

Ethernet

TimeSource 3100 has six Ethernet ports to carry TL1 commands, responses, and autonomous messages between the T imeSource 3100 and an external terminal, or an Element Manager. The user can configure the IP address, subnet mask, and gateway address for the Ethernet ports.

Four ports (5001, 5002, 5003, and 5004) are configured to act as though a serial-port communication terminal were connected to them. These ports communicate TL1 commands, responses and autonomous messages.

Two additional ports communicate with Element Managers, which may have NMS, OSMF, or similar software. An Element Manager establishes a connection with one port (5551) for TL1 commands and responses. Another port (5550) establishes a connection to an Element Manager, sends autonomous messages, and closes the connection when finished.

Passthrough

The Passthrough feature of the TimeSource 3100 allows the unit to front a DCD product to provide one management interface for a user site. Passthrough allows a user to do the following:

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Chapter 1 Overview of the TimeSource 3100

Functional Description

 Provide a no download exclusion for the Passthrough port  COM 1 or COM2 is connected to the DCD product  The user port can be any unused port, including the Ethernet port  Messages can pass from a user to the DCD product and from the DCD product

to a user through the TimeSource 3100

 The TID (SID for DCD) is used to identify commands that go to the DCD product.

The TimeSource 3100 passes any TID not its own through to the DCD product. In the reverse direction, all commands received from the DCD product are passed through to the user.

Note: The TID of the TL1 command must be the SID of MIS.

 DCD is fully managed except for firmware download.

Figure 1-5 shows a TimeSource 3100 Passthrough setup.

DCDPASSTHRU

Straight cable

User port (any port)

DCD-5X TS-3100

DCDUSERPORT COM 1, 2, 3 IP:5001-5004

COM 1, 2, or 3

COM1 or 2 (COM-1 is DB-25 and COM-2 is DB-9)

Figure 1-5. TimeSource 3100 Passthrough Function

Alarm Programmability

New releases of TimeSource (1.05.03 and higher) allows the user to provision the alarm escalation parameters that were hardcoded in the previous releases of TS3100.hex. The defaults for this release remain the same as were previously hardcoded. This feature can be used to set the programmability for such alarms as GPS, HOLDOVER, SPAN-X, and RO-X.

The TS3100 alarms can be programmed for GPS and HOLDOVER types of event s. The SPAN-X alarms can be programmed for AIS, ERROR, and LOS types of events. The RO-X alarms can be programmed for ERROR and LOS types of events.

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Functional Description

The user can set the parameters for SEVERITY1 and SERAFF1 which initially come into effect when the condition is detected. The user can also set the parameters for SEVERITY2 and SERAFF2 which come into effect after TIME (another user programmable parameter).

Startup

When the TimeSource starts up, the CRIT lamp lights. The CRIT lamp remains on for approximately 50 seconds to 60 seconds and then shuts off.

During startup, the TimeSource performs several self-tests to verify the integrity of the hardware and software. Neither communication nor outputs are possible at this time, and the CRIT lamp is switched on. Once the self-tests are done, a connection to the system can be made and the events viewed.

Two events are initially provided. These events are:

 “Power Up Restart”  “Settling Period”

In the “Power Up Restart” event, which lasts for approximately 2 minutes, the system does additional checks and starts all the various tasks within the system.

The “Settling Period” event is an informational message that lasts until the TimeSource’s BesTime engine reaches the highest possible stable point. The time taken to reach this point depends on satellite availability, type of oscillator, ambient temperature, etc. and may take up to 20 hours to clear. Since “Settling Period” is independent of the quality of the output and is the normal behavior of the system, it is generated as an event rather than an alarm. If “Settling Period” is not cleared after 24 hours, another “Settling Period” event is generated as a marker. This is still Non-Service-Affecting.

As soon as the “Power Up Restart” message is cleared, the “BT3 Warm-up” event is generated. This is also an informational message that lasts till the time it takes the system to acquire the satellites, warm up the oscillator, and start giving out valid outputs. It may take up to 2 hours for the message to clear, but typically takes approximately 40 minutes. During the “BT3 Warm-up” time, the outputs will generally be squelched. If the outputs are enabled using the TL1 command (ED-EQPT::TS3100:ctag:::ALMCOND=ALW;) they may not be within the PRS mask. In case the system is not able to acquire sufficient number of satellites and/or discipline the oscillator within 2 hours, the event escalates into a Non Service Affecting Minor alarm.

Once the warm up is complete, the system generates valid outputs and the event is cleared.

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Chapter 1 Overview of the TimeSource 3100

Functional Description

Bridging/Holdover Behavior

In the TimeSource 3100, alarms are designed with a built-in hysteresis. This means that an alarm is not announced as soon as some error condition is detected. There is a pre-integration time during which the error must persist in order for the alarm to be announced. On the flip side, the error must be clear for a certain time for an alarm condition to be cleared. This ensures that intermittent conditions are not flagged unnecessarily.

During the normal working of the TimeSource 3100 , it is a very common occu rrence that the GPS satellites may not be visible during certain p a rt s of th e day, depending on the installation of the antenna. This is particularly true with wall and, especially, window antenna installations. The TimeSource 3600 has been designed to work around this situation.

The TimeSource 3100 enters “Bridging” mode when all satellite locks are lost. There is no TL1 annunciation that the system has entered “Bridging” mode. This is “Non Service Affecting” and the outputs are not affected. The system runs off its internal oscillator and the outputs are kept within the G.811 PRS mask by the BesTime engine.

When “Bridging” mode persists for more than 30 minutes, the system enters “Holdover” mode and a “Holdover” event is generated. This may or may not affect the outputs depending on the alarm integration parameters that can be set by the user.

The system allows the user to set various parameters for GPS error , Holdover error, and SPAN error conditions. These parameters are:

 Initial Severity  Initial Service Affecting state  Integration Time  Final Severity  Final Service Affecting state

The system also allows the user to set a parameter to define how outputs should behave in an alarm condition. Outputs can be set to AIS, Squelch, or SSM on an alarm. Outputs can also be set to ignore alarm conditions.

When the “Holdover” event is announced, it is announced with the Initial Severity and Initial Service Affecting state. If the “Holdover” event persists for the length of the Integration Time, the alarm is escalated to the Final Severity and Final Service Affecting state.

The “Holdover” event/alarm is cleared when the satellites are visible again.

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Chapter 1 Overview of the TimeSource 3100

Functional Description

Time Figure of Merit

Time Figure of Merit (TFOM) is a moving 24 hour measurement reported in nanosecond (ns) against an ideal model. TFOM has a frequency component used to measure GPS wander caused by multipath and a time loop component used to measure long term oscillator wander.

The TFOM alarm threshold is set to 500 ns and is not user configurable. A TFOM below 500 ns indicates a stable clock well within PRS output performance specifications. A TFOM between 500 ns and 800 ns is an early warning of a clock becoming unstable and in danger of going out of PRS specification. When the TFOM exceeds 800 ns, the clock is no longer meeting the stratum 1 MTIE mask.

TFOM is most useful for installations where the antenna has a limited view to the sky. This is defined as any installation where fewer than 4 satellites are in view for greater than 1 hour per day on average. This is typical for installations where the antenna is mounted in a window or on an outside wall of a building, but can also include rooftop installations with partial sky view blockage. TFOM’ s primary use is to help troubleshoot multipath issues associated with antenna placement and incorrect latitude, longitude, and/or altitude (location) data entry.

Installations with full view to the sky see 4 satellites 23+ hours a day, seven days a week. It is relatively easy to filter out multipath signals using multiple satellites and simple voting schemes. In addition, rooftop antennas are mounted vertically and all signals below the horizon are obvious multipath interference and can be masked out of the system. With 4 satellites in view, the GPS timing receiver will provide an error-free lock on its location through an automatic survey function.

With wall/window installations, voting schemes become less effective as the number of satellites in view drop. Also, wall/window antennas are mounted horizontally and are prone to seeing multipath signals reflected of f nearby structures and the ground. Wall/window installations also require the manual input of location data, creating the potential for errors and the need to detect these errors.

The TimeSource has unique algorithms to account for, and defeat, the added multipath complications and location data entry error possibilities of wall/window antenna installations. Large amounts of multipath or major errors in location data entry are easier to identify and are detected over a relatively short period of time. These short-term errors are normally reported via the TimeSource tracking success rate parameter.

Small amounts of multipath or minor errors in location data entry are difficult to identify because they mimic a true signal or an expected satellite behavior pattern. Single satellite reception over limited periods of time complicates the ability for the internal TimeSource algorithms to filter out these ghost signals and longer periods of time are needed to sort them out. TFOM tracks and reports these long-term errors.

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Chapter 1 Overview of the TimeSource 3100

Functional Description

At time of installation, marginal or unacceptable TFOM readings can indicate the need to adjust the antenna placement, the mask angle, and/or the location data. Relatively small changes in the antenna placement can improve the ability of the system to see satellites and therefore improve performance. The mask angle can be adjusted to block out lower elevation portions of the sky if there is good visibility at higher elevations, thereby reducing multipath. Correct location data is very helpful in identifying and tracking satellites.

In addition, a clock may be stable for many weeks, months, or years but could degrade because of changes in its environment. TFOM is useful in detecting these infrequent subtle changes including:

 Maturing foliage or seasonal foliage changes  Installation of new transmitters nearby (i.e. wireless base station)  New building construction  Variations in the day-to-day temperature of the CO

30 TimeSource 3100 User’s Guide 097-72020-01 Revision K – December 2005

Chapter 2 Engineering & Ordering

This chapter provides information to assist in planning the installation and ordering a system appropriate for a specific site.

In This Chapter

 Site Survey  Lightning Suppressor Guidelines  Antenna Location Guidelines  Earth Ground Location Guidelines  Antenna Cable Choices  Shelf Considerations  Systems  User-Supplied Tools and Materials

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Chapter 2 Engineering & Ordering

Site Survey

Perform a site survey as described below before ordering the system. Use the guidelines and considerations in the Antenna Location Guidelines section and the Shelf Considerations section.

1. Determine the shelf location.

2. Determine the best location for mounting the antenna (less than 305 m of cable from the shelf). Use the guidelines and considerations in Antenna Location

Guidelines, on page 33.

3. Determine the location of the grounding point for the lightning suppressor, then determine the location of the lightning suppressor. The cable length between the lightning suppressor and the grounding point must be less than 4.6 m. If the grounding point is inside the building, the cable length between the grounding point and the cable entry must be less than 15 m. Valid lightning suppressor grounding points are as follows:

– Valid roof ring ground system (usually for roof-mounted lightning

suppressors)

– Structural steel of building (for interior-mounted or exterior mounted

lightning suppressors, attach with a cad weld)

– Central Office ground plate (usually for interior-mounted lightning

suppressors)

4. Two lengths of cable are required. Plan the cable route and measure the length of cable required between the antenna and the lightning suppressor, and between the lightning suppressor and the shelf.

5. Determine the two separate –48 V power sources for the shelf. If only one –48 V power source is available, it must be cabled to both TimeSource 3100 power inputs.

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Lightning Suppressor Guidelines

Mount the lightning suppressor within 4.6 meters of a valid, direct, low impedance, low resistance, earth ground connection point. Valid earth grounds include the roof ring ground system, building structural steel, or a Central Office ground plate. If the grounding point is inside the building, mount the suppressor within 15 meters of the cable entry into the building.

Warning: To prevent possible lightning-induced damage, do not use metal clamps that form a complete circle ar ound the antenn a cable or the cable conduit. This type of ring clamp acts as a choke coil to induce currents which resist current flow and hampers proper lightning protection.

Warning: To prevent possible lightning-induced damage, install the lightning suppressor away from electrical devices or cabling that may induce arcing.

Chapter 2 Engineering & Ordering

Lightning Suppressor Guidelines

Route the ground wire as straight as possible (bends in the ground wire increase impedance at lightning frequencies), in accordance with local company practices.

Note: To keep the grounding scheme intact, keep all impedances as low as possible. Avoid small-radius turns and unnecessary turns.

Treat all exposed connections with an electrically conductive anti-corrosion compound (Kopr-Shield or equivalent).

Antenna Location Guidelines

The ideal antenna location provides a clear, unobstructed view of the sky from the zenith to the horizon line, and 360 degrees around the horizon.

A compromise often must be made between location and satellite field of view. The smaller the field of view, the fewer satellites that can be used in the timing solution for GPS derived time.

Signals closer to the horizon are often subject to multipath effects, which degrade the timing solution. The TimeSource 3100 can be set to ignore, or mask, all signals from the horizon to a chosen angle of elevation (mask angle), as shown in Figure

2-1

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Chapter 2 Engineering & Ordering

Antenna Location Guidelines

Figure 2-1. Locating the GPS Antenna

Due to the geometry of the GPS satellite orbits, more satellites are visible in the direction of the equator than the poles. If possible, place the antenna so that the antenna has a clear view toward the equator (toward the south in the northern hemisphere, or toward the north in the southern hemisphere). Up to 60 degrees of arc, centered at the pole, may be blocked with little effect in the temperate latitu des. This note is less applicable in latitudes nearer the equator.

The total of obstructions above the mask angle should not obscure more than 25 percent of the total field of view (90 degrees of azimuth) as shown in the examples in Figure 2-2.

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Figure 2-2. GPS Antenna Location Examples

Chapter 2 Engineering & Ordering

Antenna Location Guidelines

Notes:

1. Place the antenna high enough on the tower that obstructions are below the mask angle; mount the antenna more than 1 meter away from the tower, and far below the interference of the antennas at the top of the tower. Tower mounting is the least desirable location because of the potential for severe multipath, and difficulty in troubleshooting and maintenance.

2. Place the antenna high enough that the roof structure and tree are below the mask angle, and the water tower does not block a large portion of the sky.

No single obstruction should block a large portion (45 degrees of azimuth) of the view.

The most important obstructions are within 400 meters of the an tenna. Obstructions may include, but are not limited to, towers, buildings, other construction, trees, and high-voltage power lines.

Attempt to avoid locating the antenna within 30 degrees azimuth of the transmission direction of any transmitting antenna in the area, even if the transmitting antenna operates at a different frequency. A transmitting antenna may cause the GPS antenna to become overloaded and reduce its reception capabilities.

The minimum horizontal distance from other receiving antennas is 1 meter. To reduce multipath signal distortions, the minimum horizontal distance from

vertical reflective structures (e.g. heating ducts, equipment housings, etc.) is twice the height of the structure, and no less than 3 meters (see Figure 2-3).

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Chapter 2 Engineering & Ordering

Earth Ground Location Guidelines

Do not locate the antenna underneath high power lines. If this cannot be avoided, ensure the antenna is placed at least twice as far from the power line as the power line is high (to avoid danger to personnel or multipath effects).

Figure 2-3. Sample Rooftop Antenna Mounting

Note: Figure 2-3 illustrates a sample installation. Not all parts are available from Symmetricom.

Earth Ground Location Guidelines

The roof ring ground system, a Central Office grounding plate, and building structural steel are examples of valid earth ground points. If the mounting plate cannot be bolted to a valid earth ground, or if the mounting plate is to be installed in a nonmetallic junction box, bolt the mounting plate to a point within 4.6 m of the valid earth ground.

36 TimeSource 3100 User’s Guide 097-72020-01 Revision K – December 2005

Antenna Cable Choices

The antenna assembly uses the same coaxial cable for power and antenna signals. The length of cable is determined by circumstances of the installation and site.

Two cables are required: one to connect the antenna to the lightning suppressor, and another to connect the lightning suppressor to the TimeSource 3100 Shelf.

Symmetricom offers RG-59/U plenum-rated coaxial cable (0.812 mm [20 A WG], 75 ohm coaxial) with male TNC connectors attached, in the following lengths:

 3 m cable (060-72010-01)  6 m cable (060-72010-02)  15 m cable (060-72010-05)  30 m cable (060-72010-10)  61 m cable (060-72010-20)

Chapter 2 Engineering & Ordering

Antenna Cable Choices

 91 m cable (060-72010-30)  152 m cable (060-72010-50)  182 m cable (060-72010-60)  243 m cable (060-72010-80)  305 m cable (060-72010-99)

Optionally, one length of coaxial cable may be ordered, which must be cut and prepared with end-connectors at the point where the suppressor is located. The following items, which must be ordered separately, are available for this type of installation.

 TNC connector kit (093-72010-98) includes:

– TNC connectors for RG-59/U cables (8) – Rubber boots (8) – TNC adapter connectors (2)

 TNC crimp tool (154-00023-01)

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Chapter 2 Engineering & Ordering

Antenna Cable Choices

Remote Oscillator Cabling

If 5 MHz signals from a DCD Shelf are used as remote oscillator inputs, a 5 MHz Isolator Kit must be used between the DCD shelves listed in Table 2-1 and the TimeSource 3100 Shelf. Refer to Field Service Bulletin FSB 098-40620-19R2 for details.

Table 2-1. Isolation Kits for DCD Shelves

DCD-ST2 093-45110-06 DCD-519 093-45110-06 DCD-419 093-45110-07 DCD-521 (not required with DCD-521/C) 093-45110-06 DCD-523 (backplane Revision D or earlier) 093-45110-06

Shelf Isolator Kit Part Number

The 5 MHz Isolator Kit consists of the isolation module, associated screws, two 0.61 meter long RG-59/U, 75 ohm coax cables, and two 1.83 meter lengths of 50 ohm cables. The 0.61 meter long cables have BNC connectors at both ends for connecting to all shelves except for the DCD-419 (Rev. D or later), or SMB-to-BNC connectors for connecting to the DCD-419.

The isolation module is used to reduce potential noise coupling, and match impedances in the cables between the DCD master shelf and TimeSource 3100. It also converts the 5 MHz output from a square wave to a sine wave.

The isolation module is installed between the Time Source 3100 Shelf and the DCD master shelf. To connect between the module and the DCD Shelf, two 0.61 meter long RG-59/U, 75 ohm coax cables are provided.

If an isolator kit is not required, the following cable options are available:

 Remote oscillator cable kit (093-72001-01) includes:

– Remote oscillator cables (2) (160-00201-06) – Right-angle BNC connector adapters (4)

 Remote oscillator cable (160-00201-06)

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Chapter 2 Engineering & Ordering

Shelf Considerations

IRIG-B TOD (990-72020-05 Systems Only)

If you are using the IRIG-B TOD outpu ts (990-72020-05 T imeSource 3100 Syst em), right-angle BNC connectors are provided to prevent small radius turns in the IRIG-B TOD cables. The right-angle BNC connectors may be attached to the IRIG-B BNC adapter (also provided) BNC connectors, to direct the cables from the shelf as desired.

For each IRIG-B TOD output, a customer-supplied cable with BNC connectors on each end is installed between the adapter and the network elements requiring IRIG-B TOD timing.

RJ-422–to–RJ-232 TOD Converter

If using time-of-day (TOD), and the device receiving the time code accepts an RS-232 signal instead of an RS-422 signal (for example, a Cisco router), an RJ-422-to-RJ-232 TOD Converter Kit is required (ordered separately, part number 093-72000-98).

The RJ-422-to-RJ-232 TOD Converter Kit consists of a mounting plate with a female RJ-45 connector, a female DB-25 connector, a TOD converter, and two screws.

Install the converter anywhere (for example, on unused sp ace on a rack) within 305 cable meters of the TimeSource 3100 shelf, and within 15 cable meters of the device receiving the time code.

The user must supply two cables. One cable is a Category 5 four-pair RS-422 cable, 305 meter maximum, with RJ-45 connectors on each end. Route this cable between the TimeSource 3100 Shelf and the converter.

The other cable is an RS-232 data communications cable, 15 meter maximum, with a 25-pin male D-type connector and another connector determined by the device receiving the time code. Route this cable between the converter and the device receiving the time code.

Shelf Considerations

The TimeSource 3100 Shelf can be mounted in an ETSI 53.5 cm rack or a 48 cm rack. The shelf is shipped with supplied mounting ears positioned for flush mounting on an ETSI 53.5 cm rack. Attach the mounting ears (Figure 2-4) to the appropriate positions on the sides of the shelf for flush mounting or 12.7 cm offset mounting. Attach the short side of the mounting ear to th e shelf for an ETSI 53.5 cm rack, and attach the long side of the mounting ears to the shelf for a 48 cm rack. Mount the shelf in the rack according to standard company practices.

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Chapter 2 Engineering & Ordering

Systems

Figure 2-4. Rack Mounting Options

Systems

The available TimeSource 3100 systems are listed below.

Standard System (Two E1 or 2.048 MHz Outputs)

This system (990-72020-01) includes:

 TimeSource 3100 Shelf (090-72000-11)  TimeSource 3100 card (090-72020-01)  Antenna (090-72010-71)  Antenna mounting kit (093-00001-01)  Hardware kit (093-72020-97) includes:

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Chapter 2 Engineering & Ordering

Systems

– Lightning suppressor (143-00018-01) – Lightning suppressor mounting bracket (070-00300-02) – Craft port-to-PC communications cable (060-00067-01)

 System software (992-72020-05 or later)

With Eight Additional E1 or 2.048 MHz Outputs

This system (990-72020-02) includes:

 TimeSource 3100 Shelf (090-72000-11)  TimeSource 3100 card with expansion E1 or 2.048 MHz outputs (090-72020-02)  Antenna (090-72010-71)  Antenna mounting kit (093-00001-01)  Hardware kit (093-72020-97) includes:

– Lightning suppressor (143-00018-01) – Lightning suppressor mounting bracket (070-00300-02) – Craft port-to-PC communications cable (060-00067-01)

 System software (992-72020-05 or later)  One of the following Output modules, which must be ordered separately:

– BNC output module (990-72100-01) – Wire-wrap output module (990-72100-02)

With Eight Additional Mixed E1/T1Outputs

This system (990-72020-06) includes:

 TimeSource 3100 Shelf (090-72000-11)  TimeSource 3100 card with mixed E1/T1 outputs (090-72020-06)  Antenna (090-72010-71)  Antenna mounting kit (093-00001-01)  Hardware kit (093-72020-97) includes:

– Lightning suppressor (143-00018-01) – Lightning suppressor mounting bracket (070-00300-02) – Craft port-to-PC communications cable (060-00067-01)

 System software (992-72020-05 or later)  The following Output module, which must be ordered separately:

– Wire-wrap output module (990-72100-02)

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Chapter 2 Engineering & Ordering

Systems

With Two E1 Synchronization Insertion (ESCIU) Ports

This system (990-72020-04) includes:

 TimeSource 3100 Shelf (090-72000-11)  TimeSource 3100 card with ESCIU ports (090-72020-04)  Antenna (090-72010-71)  Antenna mounting kit (093-00001-01)  Hardware kit (093-72020-97) includes:

– Lightning suppressor (143-00018-01) – Lightning suppressor mounting bracket (070-00300-02) – Craft port-to-PC communications cable (060-00067-01)

 System software (992-72020-05 or later)  The following ESCIU Connector modules, which must be ordered separately.

Choose from: –75 Ω BNC unbalanced connector module (990-72100-04) –120 Ω wire-wrap balanced connector module (990-72100-05)

With Four IRIG-B TOD Outputs

This system (990-72020-05) includes:

 TimeSource 3100 Shelf (090-72000-11)  TimeSource 3100 card with IRIG-B TOD outputs (090-72020-05)  Antenna (090-72010-71)  Antenna mounting kit (093-00001-01)  Hardware kit (093-72020-71) includes:

– Lightning suppressor (143-00018-01) – Lightning suppressor mounting bracket (070-00300-02) – Craft port-to-PC communications cable (060-00067-01)

 System software (992-72020-05 or later)  A BNC Output module (990-72100-03), which must be ordered separately:

42 TimeSource 3100 User’s Guide 097-72020-01 Revision K – December 2005

User-Supplied Tools and Materials

Ensure that the user-supplied tools and materials listed below are on hand for installation of the antenna.

For Antenna Installation

 2.5 cm diameter galvanized metal pipe, used as a mast to mount the antenna.

Mast should be long enough to position the antenna above any metal object on the roof.

 Screws to attach the lightning suppressor mounting plate.  Plumb line or bubble level.  Nonmetallic junction box for lightnin g suppressor (optional if lightning suppressor

mounted indoors).

 2.5 cm diameter PVC pipe as conduit for outdoor cables.  PVC fittings appropriate to the installation and cable route.

Chapter 2 Engineering & Ordering

User-Supplied Tools and Materials

 Appropriate tools and materials for cutting, shaping, and connecting PVC pipe.  4.115 mm (6 AWG) ground wire.  Spade lugs for 4.115 mm (6 AWG) ground wire.  Crimp tool for 4.115 mm (6 AWG) spade lugs.  Hardware to attach the ground wire to a valid earth ground.  Fire-stopping material to seal conduit hole in roof or wall.  Electrically conductive antioxidant compound (Kopr-Shield or equivalent) to coat

exposed connections to prevent oxidation.

 Tool to cut cable, if installation requires custom lengths of cable.

For Shelf Installation

Ensure that a Phillips-head screwdriver is on hand for installing the TimeSource 3100 Shelf in a rack and four (4) screws to mount the shelf in the rack.

Outputs, Power, and Miscellaneous

 RG-58 coaxial cable for 1 PPS, 10 MHz outputs (if used)  Ethernet 10BaseT cable for Ethernet port (if used)  Category 5 four-pair RS-422 cable, with RJ-45 connector for the TOD output,

RS-422-to-RS-232 TOD converter (if used)

 RS-232 cable with DB-25 connector for the RS-422-to-RS-232 T O D convert er (if

used)

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Chapter 2 Engineering & Ordering

User-Supplied Tools and Materials

 RS-232 cable with DB-9 connector for COM2 port (if used)  4.115 mm (6 AWG) ground wire  1.47 mm (16 AWG) green insulated ground wire  1.47 mm (16 AWG) red insulated wire  1.47 mm (16 AWG) black insulated wire  E1 cable

44 TimeSource 3100 User’s Guide 097-72020-01 Revision K – December 2005

Chapter 3 Installing the TimeSource 3100

This chapter provides the steps required to install and power-up the TimeSource 3100 shelf.

In This Chapter

 Unpacking the Unit  Installing the Antenna  Installing the Shelf  Making Cable Connections  Powering Up the Shelf  Installing TimeWizard  Factory Default Values

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Chapter 3 Installing the TimeSource 3100

Unpacking the Unit

Install the TimeSource 3100, using steps in the order given in this chapter. If you encounter any difficulties during the installation process, contact Symmetricom Global Services (SGS). Refer to the Technical Assistance section of the Troubleshooting chapter for telephone numbers.

SGS includes Product Technical Support for technical information, and Customer Service for information about an order, RMAs, and other information.

The TimeSource 3100 an d accessories are pa ckaged to protect from normal shock, vibration, and handling damage.

Caution: To avoid electrostatic discharge (ESD) damage to parts that are packaged with the TimeSource 3100, observe the following procedures.

Unpack and inspect the unit as follows:

1. Wear a properly grounded protective wrist strap or other ESD device.

2. Inspect the container for signs of damage. If the container appears to be damaged, notify both the carrier and your Symmetricom distributor. Retain the shipping container and packing material for the carrier to inspect.

3. Open the container, being careful to cut only the packaging tape.

4. Locate and set aside the printed information and paperwork that is included in the container.

5. Remove the unit from the container and place it on an anti-static surface.

6. Locate and set aside small parts which may be packed in the container.

7. Remove the accessories from the container.

8. Remove the anti-static packaging from the unit and accessories.

9. V erify that the mo del and item number shown on the shipp ing list agrees with the model and item number on the equipment. The item number can be found on a label affixed to the TimeSource 3100. Contact your Symmetricom distributor if the model or item number do not match.

46 TimeSource 3100 User’s Guide 097-72020-01 Revision K – December 2005

Installing the Antenna

These installation procedures are to be used in support of local company procedures and the Installation Job Specification.

Prior to installing the antenna, the site, antenna location, lightning suppressor location, cable route, and all other details should be planned as described in

Antenna Location Guidelines, on page 33.

To install the antenna, refer to Figure 3-1, and perform the procedure that follows.

Warning: To prevent possible lightning-induced damage, install the lightning suppressor away from electrical devices or cabling that may induce arcing.

Chapter 3 Installing the TimeSource 3100

Installing the Antenna

Figure 3-1. Antenna-to-Shelf Cabling

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Chapter 3 Installing the TimeSource 3100

Installing the Antenna

1. Attach the antenna mounting bracket to a 1-inch (2.5 cm) diameter pipe or wood post.

– If you are mounting the bracket to a pipe, assemble as shown in

Figure 3-2. Slide the two V-bolts over the pipe, and through the mounting

bracket slots; then place the provided four washers and four nut s over the V-bolts, against the mounting bracket. Leave the V-bolts loose enough to allow for final adjustments.

Figure 3-2. Installing the Antenna Bracket on a Pipe

– If you are mounting the bracket to a wood post, assemble as shown in

Figure 3-3. Install the provided two self-tapping screws in two diagonally

positioned mounting bracket slots, and attach to the post.

Figure 3-3. Installing the Antenna Bracket on a Post

Mount the antenna and mast assembly to the “L” bracket.

2. Connect the mast to the flange using PVC glue.

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Chapter 3 Installing the TimeSource 3100

Feed an RG58 (060-72010-xx) cable through the bottom of the mast as illustrated.

Installing the Antenna

See Antenna Cable Choices, on page 37 for specific cable lengths.

4. Connect the cable to the antenna “pigtail” and pull the cable back through the mast.

5. Mount the antenna to the mast using the supplied shims.

6. Mount the antenna and mast assembly to the “L” bracke t using the supplied nut s, bolts, and washers, as shown in Figure 3-4.

Figure 3-4. Attaching the Antenna to the Bracket

7. Using a plumb line or bubble level, ensure the antenna is within 5° of vertical (perpendicular to the horizon), and tighten the mounting bracket bolts.

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Chapter 3 Installing the TimeSource 3100

Installing the Antenna

8. Bolt the lightning suppressor mounting plate to a flange that is att ached to a valid earth ground. The roof ring ground system, a Central Office grounding plate, and building structural steel are examples of valid earth ground points. If the mounting plate cannot be bolted to a valid earth ground, bolt the mounting plate to a point within 15 feet (4.6 m) of the chosen valid earth ground. If the mou nting plate is to be installed in a nonmetallic junction box, perform the installation and bolt the assembly near the chosen valid earth ground.

Note: A junction box must have inside dimensions of 7 cm by 7 cm by 4 cm to hold the mounting plate and attached components.

9. Assemble the lightning suppressor as shown in Figure 3-5.

Figure 3-5. Assembling the Lightning Suppressor

10.Install 1.5-inch (3.8 cm) nonmetallic conduit from the antenna to the lightning suppressor, and from the lightning suppressor to the cable entrance into the building.

11.Install a user-supplied bracket, preferably non-metallic, to support the vertical section of conduit to the antenna.

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12.Route the antenna cable through the conduit, and connect the cable to the lightning suppressor. See Antenna Cable Choices, on page 37 for specific cable lengths. Connect the other end of the cable to the antenna.

13.If the lightning suppressor is not mounted directly to a valid earth grou nd, crimp a length of 4.115 mm (6 AWG) ground cable to the two-hole terminal, slide the terminal over two of the three threaded posts on the lightning suppressor mounting plate, and attach the terminal to the mounting plate with two KEPS nuts. Use the two posts that allow the least bending of the cable.

14.Connect an RG58 (060-72010-xx) cable between the lightning suppressor and the TimeSource 3100. See Antenna Cable Choices, on pa ge 37 for specific cable lengths.

15.Install fire-stopping material in all holes opened in the roof and/or walls during this procedure.

16.Check all connections for tightness to prevent arcing and intermittent operation.

17.Coat all exposed connectors with an electrically conductive antioxidant compound (e.g. Kopr-Shield spray).

Installing the Shelf

Installing Output Modules

Warning: To prevent possible ESD damage to the circuitry on the plug-in circuit board, be sure to wear a properly grounded ESD wrist strap when making connections to the connector panel.

If an 8 E1 output module, an 8 mixed El/T1 output module, a 4 IRIG-B output module, or a 2 ESCIU port module is supplied with the system, install the module as follows:

1. Remove the shelf cover to access the shelf connector panel.

2. Plug the module into the OPTIONS I/O connector on the connector panel (refer to Figure 3-6).

3. Align the three spring-loaded screws on the module with the threaded holes on the panel.

4. Use a medium flat-blade screwdriver to lock each screw in place. Torque the screws evenly to prevent skewing the module.

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Figure 3-6. Location of the Options I/O Connector

Rack Mounting

The shelf is shipped with the ears positioned for ETSI 53.5 cm mounting (Figure 12A). For 48 cm racks, the shelf can be positioned to the rear of the rack rail for flush mounting (Figure 12B) or to the front of the rack rail for 12.7 cm offset mounting (Figure 12C).

Position the mounting ears, as shown in Figure 3-7. Mount the shelf in the rack according to standard company practices.

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Figure 3-7. Rack Mounting Options

Making Cable Connections

Warning:

To prevent possible ESD damage to the circuitry on the plug-in circuit board, be sure to wear a properly grounded ESD wrist strap when making connections to the connector panel.

Do not remove, peel, pierce, or violate the integrity of the plastic overlay bonded to the faceplate on the plug-in circuit card. The overlay is an integral part of the ESD protection on the card.

The Craft connection is made at the shelf front panel. All other connections are made at the shelf connector panel. To access the shelf connector panel, remove its cover.

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Figure 3-8 shows the connectors on the front panel and connector panel. All

connectors can be located using these illustrations.

10 MHz

output

E1 outputs

A & B

(BNC)

Battery B

& frame

ground

(TB2)

1 pps

output

E1 inputs A & B

(BNC)

E1 outputs

A & B

(wire-wrap)

GPS

antenna

input

Time of day

E1 inputs

A & B

(wire-wrap)

Expansion Bus

(Reserved for

future use)

Com

port 1

4 IRIG-B TOD outputs (BNC) or

Alarms

Com

port 2

Craft

Output Module:

8 E1 outputs (BNC or

wire-wrap) or

2 ESCIU ports (BNC or

wire-wrap) or

8 mixed E1/T1 outputs

(wire-wrap)

Battery A

& frame

ground

(TB1)

Ethernet

Figure 3-8. Connector Panel and Front Panel Connectors

Frame Ground

Frame ground enters through the four-position power terminal blocks labeled TB1 and TB2. Figure 3-9 shows the location of the terminal blocks, and Figure 14 shows the terminal block connections.

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Figure 3-9. Terminal Block Connections on the Connector Panel

Making Cable Connections

Ensure the frame ground wires are long enough to reach from the shelf connector panel to the frame ground connection. Use one 1.47 mm (16 A WG) gre en insulated wire to connect the FRM terminal of power terminal block TB1 to the frame ground, and use another 1.47 mm (16 AWG) green insulated wire to connect the FRM terminal of TB2 to frame ground.

Make the ground connection, following one of the methods described below, depending on whether a ground rod is installed:

With a ground rod:

Solder the connection to the 4.115 mm (6 AWG) frame ground rod that is run vertically on each side of the rack, if provided. Two methods are acceptable:

 Crimp an appropriate-size spade lu g to the 1.47 mm (16 A WG) wire, bend the lug

around the frame ground rod, and solder.

 Strip enough insulation from the 1.47 mm (16 AWG) wire to permit three

complete turns around the frame ground rod, and solder.

Note: To avoid a cold solder connections, use at least a 25-W soldering iron to ensure that the frame ground rod is heated sufficiently.

Without a ground rod:

Crimp an appropriate spade lug to the ground wire from each terminal block, and screw the lug to a screw hole on the rack. Remove the paint and sand the area around the screw hole to ensure proper conductivity. Coat the connection with an electrically conductive antioxidant compound, for example, Kopr-Shield spray.

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Making Power Connections

Caution: To avoid possible shock, protective fusing must be provided as part of the installation. This equipment is intended for installation in a restricted access location.

Caution: To avoid possible shock, do not apply power to the TimeSource 3100 shelf before instructed in this procedure. Before connecting the power cables to the TimeSource 3100, ensure the fuses are removed from the fuse panel that supplies power to the power cables.

The –48 volt DC battery enters through the four-position power terminal blocks labeled TB1 and TB2. Figure 3-8 shows the location of the terminal blocks, and

Figure 3-9 shows the terminal block connections.

Ensure the power wires are long enough to reach from the shelf connector panel to the office battery source connection. Use two 1.47mm (1 6 AWG) stranded wires for the power connection, one with red insulation (BATT), and the other with black insulation (RTN).

Note: Input power is reverse polarity protected; there are no user replaceable fuses in the TimeSource 3100.

Connect the power wires with red insulation to the BATT wire receptacles on TB1 and TB2. Connect the power wires with black insulation to the RTN wire receptacles on TB1 and TB2.

Note: Two separate office battery supplies (battery A and battery B) are recommended. If separate office battery supplies are not available, connect a single office battery to both input s (TB1 and TB2) to avoid a standing battery-failure alarm.

Making GPS Antenna Connections

Connect the coaxial cable from the lightning suppressor to the TNC connector labeled GPS ANT. See Figure 3-8 for the connector location.

Making 10 MHz Output Connections

Connect an RG-58 coaxial cable from the connector labeled 10 MHz to the equipment that will use the 10 MHz output signal. See Figure 3-8 for the connector location.

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Making E1 or Analog Synchronization Output Connections

Connect the E1 or analog synchronization outputs at the wire-wrap pins or BNC connectors labeled El OUT A and El OUT B. If using the wire-wrap pins, connect the tip wire to the pins labeled T, the ring wire to the pins labeled R, and the shield to the pins labeled S. See Figure 3-8 for the location of the connectors and pins, and

Figure 3-10 for the wire-wrap connections.

Notes:

1. For wire-wrap connections, the shield pin is provided to ground the cable shield at the shelf, if required. Normally, the shield is grounded at the source. Grounding the shield at both ends is not recommended.

2. A BNC connector can be used for one output, and a wire-wrap connector can be used for the other output, but do not use the BNC and wire-wrap connectors of the same output simultaneously. For example, a BNC connector can be used for output A and the wire-wrap pins for output B, but do not use the output A BNC connector with the output A wire-wrap connector

Warning: To avoid possible equipment damage, do not connect the El output line directly to a point outside the building. The El output circuits do not provide lightning protection.

Figure 3-10. E1 or Analog Output Wire-Wrap Connections

Making 1 PPS Output Connections

Connect an RG-58 coaxial cable from the connector labeled TTL PPS to the equipment that will use the 1 pulse-per-second TTL output signal. See Figure 3-8 for the connector location.

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Connecting E1 or Analog Reference Inputs

E l or analog reference inputs, traceable to an independent Stratum 1 source, can be used in the output ensemble. Also, the performance of one or two references can be monitored. In either case, connect reference inputs to the wire-wrap pins or BNC connectors labeled SPAN IN A and SPAN IN B. If using the wire-wrap pins, connect the tip wire to the pin labeled T, the ring wire to the pin labeled R, and the shield (if connected at the TimeSource 3100) to the pin labeled S. See Figure 3-8 for the location of the connectors and pins, and Figure 3-11 for the wire-wrap connection s..

Notes:

1. The shield pin is capacitively coupled to ground. No rm ally, the shield is grounded at the source. Grounding the shield at both ends is not recommended.

Warning: To avoid possible equipment damage, do not connect the El output line directly to a point outside the building. The El output circuits do not provide lightning protection.

Figure 3-11. E1 or Analog Output Wire-Wrap Connections

Connecting Remote Oscillator Inputs

If using the remote oscillator outputs, follow the instructions below. Refer to Chapter 2, Engineering & Ordering to determine if an isolator kit is required.

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For the connection between the Time Source 3100 Shelf and the isolation module, use the provided two 1.83 meter lengths of 50 ohm coax cables. If the TimeSource 3100 Shelf is not collocated with the DCD Shelf, and longer cables are required, these must not exceed 15 meters, and are to be user-supplied.

Note: The isolation module must be mounted on the rack, in close proximity to the DCD Shelf, whether or not the TimeSource 3100 is installed in a collocated or non-collocated location from the DCD Shelf. Attaching the isolation module (to the rack) grounds the module to rack frame ground. Grounding the module to rack frame ground is required if the TimeSource 3100 is located at a distance less than 1.83 meters from the DCD Shelf.

DCD Shelf with Isolation Module

To install the isolation module, perform Procedure C.

1. On the rear of the DCD rack, check either side of th e DCD shelf, directly above or below the shelf, for a location to mount the isolation module. Mount the module to the rack, using the two provided screws.

Note: Due to distance constraints, the module must be placed no more than 0.61 meter from the following connectors:

 OSC A/B OUT connectors on the rear of the DCD-519 and

DCD-523 (Rev. D or earlier) master shelves

 5 MHZ OUTPUT A/B connectors on the DCD-ST2 master shelf  J35 and J36 connectors on the DCD-419 master shelf (Rev. D or

later)

2. Use the provided 0.61 meter coax cable to connect from the appropriate A connector on the DCD Shelf backplane to the TO DCD SHELF end of the isolation module (refer to Table 3-1 and Figure 3-12).

3. Use the 1.83 meter coax cable to connect the REM OSC A connector on the TimeSource 3100 Shelf to the TO LPR end of the isolation module (refer to

Figure 3-12).

Table 3-1. DCD Connections to the TimeSource 3100

From DCD Shelf

DCD Shelf Type

Connector Label

To TimeSource 3100

Connector

DCD-ST2

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J24 5 MHz OUTPUT A REM OSC A J25 5 MHz OUTPUT B REM OSC B

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Table 3-1. DCD Connections to the TimeSource 3100 (Continued)

DCD Shelf Type

DCD-419

DCD-523

DCD-519

From DCD Shelf

Connector Label

To TimeSource 3100

Connector

J35 Not Labeled REM OSC A J36 Not Labeled REM OSC B J61 OSC A OUT REM OSC A J62 OSC B OUT REM OSC B J44 OSC A OUT REM OSC A J45 OSC B OUT REM OSC B

Figure 3-12. DCD Shelf, Isolation Module, and TimeSource 3100 Connections

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DCD Shelf without Isolation Module

If an isolation module is not required, use two 50 ohm coax cables to make the connections to the DCD Shelf. Cables must not exceed 15 meters, and must be purchased separately or are to be user-supplied.

Source Other than DCD Shelf

If an isolator kit is not required, connect an RG-59/U coaxial cable from a 5 MHz or 10 MHz remote oscillator to the connector labeled REM OSC A. Connect another RG-59/U coaxial cable from a remote oscillator of the same frequency to the connector labeled REM OSC B. Both remote oscillators must be the same frequency, and a minimum of Stratum 2 (rubidium oscillator) quality. See Figure 13. for the connector locations.

Installing a Module for Additional E1 or Analog Outputs

Connect the optional eight E1 or analog outputs with the wire-wrap or BNC output module. See Figure 3-8 for the connector location, and Figure 3-13 for the connections.

Figure 3-13. Eight E1 or Analog Output Connections

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Installing the Mixed E1/T1 Output Module

Connect the optional eight mixed El/T1 outputs with the wire-wrap output module. See Figure 3-8 for the connector location, and Figure 3-14 for the connections.

Figure 3-14. Eight Mixed E1/T1 Output Connections

Installing the IRIG-B TOD Output Module

Connect the four optional IRIG-B TOD outputs with the IRIG-B output module. See

Figure 3-8 for the connector location, and Figure 3-15 for the connections.

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Figure 3-15. IRIG-B TOD Output Connections

Installing the ESCIU Port Module

The ESCIU ports (Figure 3-16) have a different function than the synchronization outputs. Synchronization outputs provide external reference clock signals for network elements. ESCIU ports carry El traffic, and directly synchronize the El bitstream.The ESCIU module can synchronize 2 spans in one direction. The return direction passes through as it is.

The ESCIU ports can connect at the digital distribution frame (DDF). The network elements receiving the ESCIU output signal must be able to receive El signals that conform to CCITT G.703 paragraph 6 specifications.

A bypass relay directs the E1 traffic a round the ESCIU circuits to maint ain continuity on the spans if a fault occurs.

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Figure 3-16. Connector Layout of ESCIU Modules

Cutover Procedures for Out-of-Service Equipment

If DDF access jack sets are not cabled to the ESCIU module, the following out-of-service cutover procedure must be used. Consult the local company Installation Job Specifications to ensure that the network element to be re-timed is connected to the ESCIU module correctly. Refer to Figure 3-17 for the following procedure:

1. Remove from service (turn down) the traffic trunks on the E1 system to be cutover to the ESCIU module.

2. Remove the existing cabling in both directions between the transmit (OUT) and receive (IN) terminals of the NEs that will connect to the ESCIU module.

3. In the direction not to be synchronized by the ESCIU module, connect new cables from the ESCIU module RTNx IN connector to the NE transmit (OUT) terminal, and connect from the ESCIU module RTNx OUT connector to the NE receive (IN) terminal.

4. In the direction to be synchronized by the ESCIU module, connect new cables from the ESCIU module IN connector to the NE transmit (OUT) terminal, and connect from the ESCIU module OUT connector to the NE receive (IN) terminal.

5. Verify that there are no alarms on the NEs on the E1 system. If there are ala rms, recheck the new cabling between the NEs and the ESCIU module.

6. Restore (turn up) the traffic trunks to service.

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Figure 3-17. ESCIU Cutover without Jacks (Out-of-Service)

Cutover Procedures for In-Service Equipment

If standard digital signal level access jack sets, such as DDF or DSX-1 jacks, were cabled to the ESCIU module, the following in-service cutover procedure must be used. Consult the local company Installation Job Specifications to ensure that the network element to be re-timed from the ESCIU module will be connected to the ESCIU module A OUT terminals. Refer to Figure 3-18 for the following procedure:

1. Patch a bridging repeater from the MON jack of one NE to the IN jack of the other NE in both directions of transmission on the E1 system to be cutover. Place a 75 Ω termination plug in the OUT jack in each direction.

2. Remove the cross-connect wiring from the OUT and IN jacks (off-normal side of jacks) in both directions of transmission.

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5. Remove the 75 Ω (E1) termination plug from the OUT jack and p atch cor ds from the NE IN jack. The E1 system bitstream is now going through the ESCIU module.

6. Verify that there are no alarms on the NEs on the E1 system. If there are ala rms, reinsert patch cords in the IN jack and the termination plugs in the OUT jack. Recheck the cross-connect wiring just installed, and repeat Step 5.

7. Remove the remaining patch cords from the NE MON jack.

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Figure 3-18. ESCIU Cutover with Jacks (In-Service)

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Connecting the Time of Day Output

If using Time of Day Output, connect the time of day (TOD) output at the female RJ-45 connector labeled TOD. See Table 3-8 for the connector location, and Table

3-2 for the connector pinouts.

Table 3-2. TOD Connector Pinout

Pin Signal Abbreviation Direction

1 2 3 4 5 6 7 8

Note: Pins not listed are reserved for future use.

1 pps A TOD PPS + From TimeSource 3100 1 pps B TOD PPS – From TimeSource 3100 12 V power source TOD P12V — Receive data B TOD RXD – To TimeSource 3100 Receive data A TOD RXD + To TimeSource 3100 Circuit ground TOD GND — Transmit data A TOD TXD + From TimeSource 3100 Transmit data B TOD TXD – From TimeSource 3100

If the device receiving the time code (for example, a Cisco router) accepts an RS-232 cable instead of an RS-422 cable, follow Procedure D to install the RJ-45-to-DB-25 TOD converter.

Note: Before you perform the following procedure, ensure that the appropriate Cisco router or NTP type 4 compatible device is installed, and power applied, per manufacturer's instructions.

1. Secure the provided mounting plate to the RS-422–to–RS-232 TOD converter using the two provided screws. The plate may be attached to the top or front of the converter, depending on the desired surface (for example, a rack or cabinet) to which the converter will be mounted (see Figure 3-19).

Notes:

1. Due to distance constraints, the converter must be placed no more than 305 m from the TimeSource 3100 Shelf, and no more than 15 m from the device receiving the time code.

2. The converter dimensions are 7.5 cm by 3.8 cm by 2.5 cm.

3. The mounting plate dimensions are 7.5 cm by 5 cm.

2. Secure the converter to the desired surface, using the slots in the plate and user-supplied bolts.

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3. Install a user-supplied Category 5 four-pair RS-422 cable with RJ-45 connectors on each end, between the T imeSource 3100 Shelf and th e converter (see Figure

3-20).

4. Install a user-supplied RS-232 cable, with DB-25 connectors on each end, between the converter and the device receiving the time code (see Figure 3-20). See Table 3-3 for the DB-25 connector pinouts.

Figure 3-19. RS-422 to RS-232 TOD Converter Mounting Plate

Figure 3-20. RJ-45 to DB-25 TOD Converter Connections

Table 3-3. Converter DB-25 Connector Pinout

Pin Signal

1 3 5 7

Frame ground Data output (RS-232) 1 pps (RS-232) Signal ground

Note: Pins not listed are reserved for future use.

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Making Ethernet Connections

Connect the Ethernet cable from the network to the 10base-T Ethernet connector labeled E-NET. See Table 3-8 for the connector location, and Table 3-4 for the connector pinouts.

Table 3-4. Ethernet RJ-45 Connector Pinout

Pin Signal Abbreviation Direction

1 Transmit data + TXD + From TimeSource 3100 2 Transmit data – TXD – From TimeSource 3100 3 Receive data + RXD + To TimeSource 3100 6 Receive data – RXD – To TimeSource 3100

Note: Pins not listed are reserved for future use.

Connecting to Communication Port 1

To provide an RS-232 link for TL1 command access to the TimeSource 3100, connect to port 1 at the female 25-pin D connector labeled COM 1. See Figure 3-8 for the location of the connector. See Table 3-5 for the connector pinouts.

Note: The COM 1 connector transmits data on pin 2 and receives data on pin 3. Be sure the other equipment receives data from the transmitting pin, and transmits data to the receiving pin.

Table 3-5. COM 1 Connector Pinout

Pin Signal Abbreviation Direction

2 Transmit data TXD From TimeSource 3100 3 Receive data RXD To TimeSource 3100 4 Request to send RTS From TimeSource 3100 5 Clear to send CTS To TimeSource 3100 6 Data set ready DSR To TimeSource 3100 7 Signal ground GND — 20 Data terminal ready DTR From TimeSource 3100

Note: Pins not listed are reserved for future use.

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Connecting to Communication Port 2

To provide an RS-232 link for TL1 command access to the TimeSource 3100, connect to port 2 at the female 9-pin D connector labeled COM2. See Figure 3-8 for the location of the connector, and Table 3-6 for the connector pinouts.

Note: The COM 2 connector transmits data on pin 2 and receives data on pin 3. Be sure the other equipment receives data from the transmitting pin, and transmits data to the receiving pin.

Table 3-6. COM 1 Connector Pinout

Pin Signal Abbreviation Direction

2 Transmit data TXD From TimeSource 3100 3 Receive data RXD To TimeSource 3100 5 Signal Ground GND — 6 Data terminal ready DTR From TimeSource 3100 7 Clear to send CTS To TimeSource 3100 8 Request to send RTS From TimeSource 3100

Note: Pins not listed are reserved for future use.

Connecting Alarm Outputs

Connect the TimeSource 3100 alarms to the office alarm panel at the critical (CR), major (MJ), and minor (MN) wire-wrap pins. See Figure 3-8 for the location of the alarm pins, and Figure 3-21 for the connections.

Connect at the upper group of pins (AUD) for audible alarms and at the lower group of pins (VIS) for visible alarms. Connect the alarm circuit between the NO and C pins for normally open contacts, or between the NC and C pins for normally closed contacts.

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Figure 3-21. Alarm Connector

Making Craft Port Connections

To provide an RS-232 link for TL1 command access to the TimeSource 3100, connect to the craft port at the female RJ-45 connector labeled Craft on the front panel. A Craft-port-to-PC cable is supplied with the TimeSource 3100 for making this connection. See Figure 3-8 for the location of the connector, and Table 3-7 for the connector pinouts.

Note: The Craft connector transmits data on pin 2 and receives data on pin 3. Be sure the other equipment receives data from the transmitting pin, and transmits data to the receiving pin.

Table 3-7. COM 1 Connector Pinout

Pin Signal Abbreviation Direction

2 Transmit data TXD From TimeSource 3100 3 Receive data RXD To TimeSource 3100 5 Signal ground GND — 6 Data terminal ready DTR From TimeSource 3100

Note: Pins not listed are reserved for future use.

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Powering Up the Shelf

To power the TimeSource 3100, follow the steps in this section. Before starting this procedure, be sure the antenna, shelf, and all connections appropriate for this installation have been installed, and that the host computer is set to communicate with the TimeSource 3100.

You need the following equpment to perform this procedure:

 Grounding wrist strap  Digital multimeter (Fluke 77 or equivalent)  Laptop computer with communications software (e.g., Windows Hyperterminal,

ProComm Plus, CrossTalk)

Prepare to Apply Power

1. Start a VT100 terminal mode session on the computer connected to the TimeSource 3100. Use a communication program that supports the Y-modem protocol (such as Hyperterminal, or a commercial package such as PROCOMM PLUS or CrossTalk).

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2. Set the communication program to communicate with the port that is connected to the TimeSource 3100.

3. Set the RS-232 communication parameters to 8 data bit s, no parity bit, 1 sto p bit, and 9600 baud.

4. Connect the computer communication port to the COM1, COM2, or Craft port on the TimeSource 3100. A craft port-to-PC communication cable is provided in the hardware kit for this purpose.

5. Ensure that the TimeSource 3100 plug-in card is not installed in the shelf.

6. Ensure that all fuses that supply power to the TimeSource 3100 shelf are removed from the fuse panel.

7. At the shelf end of the battery leads, use the multimeter to measure the voltage between the following:

Test Point Test Point Result –48V A lead –48V B lead 0 V –48V A lead TB1: RTN A 0 V –48V A lead TB1: GND 0 V –48V B lead TB2: RTN B 0 V –48V B lead TB2: GND 0 V

8. Attach a grounding wrist strap to the wrist, and plug the other end into the ground jack at the upper-right corner of the front of the plug-in card.

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9. Pull out the latching levers at each end of the front panel of the T imeSource 3100 card so that the levers are pointing directly out from the front panel.

10.Push the card into the shelf until the latching levers begin to move in.

11.Push the latching levers flat against the front panel to complete the card insertion.

12.Tighten the knurled screw above each latching lever to secure the card in the shelf.

13.Replace the connector panel cover.

14.Unplug and remove the grounding wrist strap.

Apply Power to the Shelf

15.Install the battery source fuse in the rack fuse bay that supplies power to the TimeSource 3100. The TimeSource 3100 enters its warm-up mode when power is applied. During the warm-up period, the following conditions exist:

– Status GPS lamp is green – Status SYS lamp is off – E1 outputs are squelched, sending AIS (factory setting), or sending an

SSM message, as specified in the ED-EQPT command

– Optional eight T1 outputs (if equipped) are squelched, sending AIS

(factory setting), or sending an SSM message, as specified in the

ED-EQPT command – Optional four IRIG-B outputs (if equipped) are squelched – 10 MHz and 1 pps outputs are on (unreliable while Status SYS lamp is off) – TOD output is not enabled (factory setting)

Notes:

1. The CRIT lamp and other alarm indication lamps may light. The host computer may display transient and standing alarm condition messages. Ignore alarms while the Status SYS lamp is off during warm up, unless alarms apply to inputs and outputs that were previously entered.

2. TL1 commands may be entered during warm-up to enable input s and outputs, and to set system parameters.

Establish a Connection to the Shelf

16.Use the Activate User command to log onto the system.

ACT-USER::TELECOM:<ctag>::TS3000!!;

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17.If UTC time is desired, skip to Step 18. If local time is desired, use the Edit Date command to set the date and time.

ED-DAT:::<ctag>::yyyy-mm-dd,hh-mm-ss:MODE=LOCAL;

where:

yyyy = year (1998 to 2096) mm = month (mm = 01 to 12) dd = day in (dd = 01 to 31) hh = hours (hh = 00 to 23) mm = minutes (mm = 00 to 59) ss = seconds (ss = 00 to 59)

Example command to set local time:

ED-DAT:::123::2000-06-15,14-25-00:MODE=LOCAL;

18.If UTC time is not desired, skip to St ep 19. Use the Edit Date command to set the system for UTC time.

ED-DAT:::<ctag>::yyyy-mm-dd:MODE=UTC;

where:

yyyy = year (yyyy = 1998 to 2096) mm = month ((mm = 01 to 12) dd = day (dd = 01 to 31)

Example command to set UTC time:

ED-DAT:::123::2000-06-15:MODE=UTC;

Set the Input Parameters

19.Use the Retrieve Equipment command to identify whether and how the inputs are provisioned.

RTRV-EQPT::ALL:<ctag>;

Note: Observe those results with an <aid> of RO-a and SPAN-a. If MONITOR=ALW appears for an input, that input has previously been entered. If ENSEMBLER=ALW appears for an input, that input has been set to be ensembled.

20.If the results of Step 19 indicate the remote oscillator inputs are set as desired, skip to Step 22. Use the Enter Equipment command to monitor and/or ensemble each remote oscillator input.

ENT-EQPT::RO-a:<ctag>:::ENSEMBLER=b;

where:

a = remote oscillator input (a = A or B)

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b = allow the input to be ensembled or inhibit the input from being ensembled (y =

ALW causes the input to be monitored and ensembled; y = INH cause s t he input to be monitored, but not ensembled)

21.Use the Edit Equipment command to set the frequency of the remote oscillator inputs.

ED-EQPT::TS3100:<ctag>:::ROFREQ=a;

where:

a = remote oscillator frequency in MHz (a = 5 or 10)

22.If the results of Step 19 indicate the E1 span inputs are set as desired, skip to Step 25. Use the Enter Equipment command to monitor each available E1 span input, and to specify whether those inputs are to be ensembled.

ENT-EQPT::SPAN-a:<ctag>:::ENSEMBLER=b;

where:

a = E1 span input (a = A or B) b = allow the input to be ensembled or inhibit the input from being ensembled

(b = ALW or INH) b = ALW causes the input to be monitored and ensembled;

b = INH causes the input to be monitored, but not ensembled

Set the Output Parameters

23.Use the Edit Equipment command to set the output signal framing format for each E1 output, and set the mode for each E1 output during an alarm.

ED-EQPT::E1-a:<ctag>:::FRAMING=b,ALMOUT=c;

where:

a = E1 output (a = A or B) b = framing format (b = CAS, CAS4, CCS, or CCS4, or NONE for analog) c = E1 output during alarm (c = AIS, SQUELCH, or SSM) (for SSM, framing

format must be CAS4 or CCS4)

Set the Performance Monitoring Parameters

24.If you are not using performance monitoring, skip to Step 25. Use the Initialize Register command to reset the performance monitoring data to zero for all input spans.

INIT-REG-EQPT::SPAN-a:<ctag>::ALL;

where:

a = SPAN input (a = A, B, or ALL) ALL = resets all performance monitoring data

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Set the Ethernet Parameters

25.If you are not using Ethernet, go to Step 29. Use the Edit Equipment command while connected to COM1, COM2, or the CRAFT port to set the IP address, subnetwork mask, and gateway address for the current TimeSource 3100 unit, as required for proper operation in the managed element network. (These parameters affect all Ethernet ports. The Ethernet port should be closed and all users logged off before issuing this command.)

ED-EQPT::TS3100:<ctag>:::IPNE=a,IPSUBNET=a,IPGATE=a;

where:

IPNE = a This unit's IP address in the form a.a.a.a (each a is an independent

value of 0 to 255)

IPSUBNET = a. Subnet mask in the form a.a.a.a (each a is an independent

value of 0 to 255)

IPGATE = a. Gateway IP address in the form a.a.a.a (each a is an independent

value of 0 to 255)

26.Ports 5001, 5002, 5003 and 5004 on the TimeSource 3100 are used as though they were serial TL1 communication ports. The following values are set at the factory and appear at reset:

COMPRI=ALW1 (normal communication, including autonomous messages) MONMSG=INH (monitors only the current port for messages) KEEPALIVE=0 (does not send a COMPLD message to keep connection open) ENDOFTEXT=0 (does not include an end-of-text code with a TL1 message) ECHO=ALW (echoes characters back to the sending terminal) AUTOLOGOFF=20 (does not log off the user during inactivity) SWCONTROL=INH (uses no flow control)

If these values require change, use the Edit Communication command to set communications parameters for T L1 communications.

ED-COM::COM-a:<ctag>:::[MONMSG=b[,]][KEEPALIVE=c[,]] [ENDOFTEXT=d[,]][ECHO=b[,]][COMPRI=e[,]][AUTOLOGOFF=c[,]] [SWCONTROL=b];

where:

COM-a= User IP port (a = 5001, 5002, 5003 or 5004) MONMSG=b Monitors messages on all ports (b=ALW), or current port (b=INH) KEEPALIVE=c Inactive minutes until the unit sends a COMPLD message to

keep the connection from being closed (c = 0 to 255)

ENDOFTEXT=d Hex code added to responses before semicolon (d = 0

(disabled) to 9F)

ECHO=b Echoes characters received so they appear on the user's screen as

typed (b=ALW), or inhibits echo (b=INH)

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COMPRI=e Sets the communication port capabilities as follows:

ALW0 = normal communication, no autonomous messages ALW1 = normal communication, autonomous messages ALW2 = autonomous messages received, logged on or not INH = closes connection and keeps port from use (command must go to

another port) (if the port is in use, this command also logs off the user)

AUTOLOGOFF=c Inactive minutes until the unit logs off the user, keeping the

connection open (c = 0 to 255)

SWCONTROL=b uses software (XON/XOFF) flow control (b=ALW ), or no flow

control (b=INH)

27.If you are not using an Element Manager, skip to Step 29. If you are not using a separate port to send autonomous messages to an Element Manager, skip to Step 28.

Use the Edit Equipment command to set the IP address and port address of the Element Manager. Port 5550 connects to this address when the TimeSource 3100 develops a TL1 autonomous message, sends any messages, and closes the connection. An alternate Element Manager may be set up in case port 5550 cannot make a connection to the primary Element Manager.

ED-EQPT::TS3100:<ctag>:::IPEM1=a,IPEM1PORT=b[,IPEM2=a] [,IPEM2PORT=b][,IPINACT=c];

where:

IPEM1=a Primary Element Manager's IP address in the form a.a.a.a (each a

is an independent value of 0 to 255)

IPEM1PORT=b Primary Element Manager's Ethernet port address (b = 0 to

65535)

IPEM2=a Alternate Element Manager's IP address in the form a.a.a.a (each

a is an independent value of 0 to 255)

IPEM2PORT=b Alternate Element Manager's Ethernet port address (b = 0 to

65535)

IPINACT=c Disconnects from the Element Manager if an autonomous

message is not developed during this number of 100-ms units of inactivity (0 to 10 000, where 0 deactivates the timer)

28.An Element Manager connects to port 5551 for TL1 command and response messages. The following values for port 5551 are set at the factory and appear at reset:

COMPRI=ALW1 (normal communication, including autonomous messages) MONMSG=INH (monitors only the current port for messages) KEEPALIVE=0 (does not send a COMPLD message to keep connection open) ENDOFTEXT=0 (does not include an end-of- text code with a TL1 message) ECHO=b Echoes characters so they appear on the user’s screen as typed

(b=ALW) or inhibits echo (b=INH)

AUTOLOGOFF=20 (does not log off the user during inactivity) SWCONTROL=INH (uses no flow control)

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If these values require change, use the Edit Communication command to set communications parameters for T L1 communications.

ED-COM::COM-5551:<ctag>:::[MONMSG=b[,]][KEEPALIVE=c[,]] [ENDOFTEXT=d[,]][ECHO=b[,]][COMPRI=e[,]][AUTOLOGOFF=c[,]] [SWCONTROL=b];

where:

MONMSG=b Monitors messages on all ports (b = ALW), or current port (b = INH) KEEPALIVE=c Inactive minutes until the unit sends a COMPLD message to

keep the connection from being closed (c = 0 to 255)

ENDOFTEXT=d Hex code added to responses before semicolon (d = 0

(disabled) to 9F)

ECHO=b Echoes characters received so they appear on the user's screen as

typed (b = ALW), or inhibits echo (b = INH)

COMPRI=e Sets the communication port capabilities as follows:

another port) (if the port is in use, this command also logs off the user)

AUTOLOGOFF=c Inactive minutes until the unit logs off the user, keeping the

connection open (c = 0 to 255)

SWCONTROL=b Uses software (XON/XOFF) flow control (b = ALW), or no flow

control (b = INH)

Set the ESCIU Parameters

29.If you are not using ESCIU ports, skip to Step 31. Use the Edit Equipment command to specify how the ESCIU performs during holdover:

ED-EQPT::TS3100:<ctag>:::BYPASS=a;

where:

a = E1 traffic bypasses the ESCIU circuitry (a=ALW) or continues to be

synchronized during holdover (a=INH)

30.Use the Edit Equipment command to specify how the ESCIU performs with a Loss-of-Signal (LOS) alarm on the incoming span:

ED-EQPT::OPT-a:<ctag>::ALMOUT=b;

where:

a = Directs this command to ESCIU span 1 (a=1) or span 2 (a=2)

b = If LOS is detected on the incoming span, the ESCIU passes AIS

downstream (b=AIS) or passes the LOS downstream (b=PASSTHRU)

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Set the Antenna Parameters

31.If the results of Step 19 indicate the antenna cable delay and elevation mask set are as desired, skip to Step 33. Use the Edit Equipment command to set the length of cable between the antenna and the TimeSource 3100 Shelf. This number should have been recorded during installation. Use the same command to set the antenna elevation mask angle.

ED-EQPT::GPS:<ctag>:::ANTCBLDLY=x,ANTELEVMASK=y;

where:

x = antenna cable delay in meters (x = 0 to 330) y = antenna elevation mask angle in degrees (y = 0 to 45) (see note below)

Note: The antenna elevation mask is that portion of the sky from which the TimeSource 3100 masks out satellite signals, measured from the horizon to the desired angle of elevation. For example, if the sky is obstructed below 20° elevation, signals received from below that elevation may have reflections or other anomalies. Masking those signals may allow the receiver to acquire GPS signals more quickly and accurately. Factory setting is 10.

Set the TOD Output Parameter

32.If you are not using the TOD output, skip to Step 33. Use the Edit Equipment command to set the TOD output.

ED-EQPT::TS3100:<ctag>:::TOD=y;

where:

y = TOD format (y = Cisco or NTP4)

Set the Alarm Conditioning Parameter

33.Use the Edit Equipment command to allow or inhibit alarm conditioning on the outputs. Inhibiting the alarm conditioning forces the T imeSource 3100 to continue to output valid timing signals while in alarm. This may be useful when testing, troubleshooting, or in installations where the outputs generated by the TimeSource 3100 may be better than the alte rnative (for example, offices with out additional holdover clocks in a distribution shelf).

ED-EQPT::TS3100:<ctag>:::ALMCOND=y;

where:

y = alarm conditioning of the outputs (y = ALW or INH)

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Save the Setup

34.Use the Copy Memory command to copy the database from volatile to nonvolatile memory within the TimeSource 3100.

CPY-MEM:[tid]:TS3100:<ctag>::WKG,,AUX:DATA;

Recommendation: Although the database is automatically copied to nonvolatile memory once per hour, Symmetricom recommends that you execute the Copy Memory command each time you change the database.

Installing TimeWizard

The TimeWizard Software Installation application facilitates installing software upgrades for the TimeSource 3100. This section shows how to install the TimeWizard application and how to use TimeWizard to download software upgrades.

Chapter 3 Installing the TimeSource 3100

Installing TimeWizard

Use this procedure to install the firmware in the TimeSource 3100 to configure the GPS and Holdover alarms, using the TimeWizard application.

Requirements

1. A PC running Windows 95/98/NT 4.0/2000/XP.

2. The TimeSource 3100 CD provided.

Installing the Hardware

Connect the TimeSource 3100 to the PC with a serial cable.

Installing the TimeWizard Software

1. Insert the TimeSource 3100 CD into the PC’s CD-ROM drive. If AutoRun is enabled on the PC, the CD should automatically launch the Install

Shield wizard for installation of the TimeWizard application. If InstallShield launches, continue with Step 5. If Install Shield does not automatically launch, continue with the next step.

2. in Windows Explorer, double-click “setup.exe” in the root directory of the CD to start the InstallShield wizard. Follow the prompts in the InstallShield wizard to install TimeWizard in the preferred directory.

3. From the Windows desktop, select Start

, Programs, TimeWizard to start the

TimeWizard application. When T imeW izard start s, the “T imeWizard” main screen appears, as shown in .Figure 3-22.

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The version of TimeWizard that is installed is indicated at the top right of the screen. The progress indicator at the bottom of the screen shows which of the seven screens you are currently viewing.

Note that the factory default TimeSource username of “telecom” and p assword of “TS3000!!” appear in the Login Information area of the screen.

Figure 3-22. The TimeWizard Main Screen

4. :If the user name or password of the TimeSource have been changed, enter the proper user name or password, otherwise, continue with the next step.

To select the high-speed download option, in which the firmware download takes place at approximately 12 times the default speed of 9600 baud, select the Use High Speed (115K baud) check-box.

If you do not wish to use the high-speed download option, leave the Use High Speed (115K baud) check-box unselected.

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In most cases, it is desirable to proceed with the Use High Speed (115K baud) check-box selected. In certain instances, as when the PC’ s commun ications port does not support a 115K baud rate, de-select the Use High Speed (115K baud) check-box before proceeding.

Downloading the GPS.hex software

5. Click Next>> to advance to the next screen. The Download GPS.hex screen appears, as shown in Figure 3-23. If you do not want to download the GPS.hex firmware, click Next>> again to advance to the “Download TS3000.hex” screen, then skip to Step 9.

Figure 3-23. The Download GPS.hex Screen

The versions of the GPS.hex and TS3000.hex firmware that are currently installed in the TimeSource are shown in the GPS.hex Ver and TS3000.hex Ver fields. Current satellite information is shown in the GPS Status field.

6. Click ver Unknown. The Load GPS File dialog box, shown in Figure 3-24, appears.

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Figure 3-24. The Load GPS File Dialog Box

7. Navigate to the GPS.hex firmware file that you want to download, then click

Open. The message “Verifying version for C:\directory\Gps.hex (approx 10 secs)” appears in the Command area of the screen. Once

TimeWizard has verified that the version of the firmware is correct, the t ext on the ver Unknown button changes to show the version of the firmware to be downloaded.

After TimeWizard verifies the firmware version, select the Download GPS.hex check-box.

8. Click Next>> to start the firmware download operation. The Download Progress dialog box appears, as shown in Figure 3-25.

As the download operation proceeds, the value in the Packet field increases, and the Progress bar shows the progress of the operation. When the firmware download is complete, the Download Progress dialog box closes.

After the Download Progress dialog box closes, continue with the next step.

Figure 3-25. The Download Progress Dialog Box

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Notes:

1. You can abort the firmware download operation at any time by clicking Cancel in the Download Progress dialog box.

2. If the download fails for any reason, a screen appears with instructions to contact Symmetricom. If this happens, exit the application, check the cable connections, and restart TimeWizard.

Installing TimeWizard

After the Download Progress dialog box closes, continue to monitor the messages reported in the Commands area of the screen.

After the firmware file finishes downloading from the PC to the TimeSource, TimeSource requires more time to complete the firmware upgrade process. During this time, it should not be interrupted. When the firmware upgrade is fully complete, TimeWizard automatically advances to the next screen.

Downloading the TS3000.hex firmware

9. Click ver Unk nown in the Download TS3000.hex screen (this screen is similar in appearance to the Download GPS.hex screen shown in Figure 3-23). The Load TS3000 File dialog box appears (this screen is similar to Figure 3-24). If you do not want to download the TS3000.hex file, click Next>> to skip to the next screen and skip to Step 12.

10.Navigate to the TS3000.hex firmware file that you want to download, then click

Open. The message “Verifying version for C:\directory\ ts3000.hex (approx 10 secs)” appears in the Command area of the

screen. Once TimeWiza rd has verified that the versio n of the firmware is co rrect, the text on the ver Unknown button changes to show the version of the firmware to be downloaded.

After TimeWizard verifies the firmware version, select the Download TS3000.hex check-box.

11.Click Next>> to start the firmware download operation. The Download Progress dialog box appears, as shown in Figure 3-25.

Notes:

1. You can abort the firmware download operation at any time by clicking Cancel in the Download Progress dialog box.

2. If the download fails for any reason, a screen appears with instructions to contact Symmetricom. If this happens, exit the application, check the cable connections, and restart TimeWizard.

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After the Download Progress dialog box closes, continue to monitor the messages reported in the Commands area of the screen.

After the firmware file finishes downloading from the PC to the TimeSource, the TimeSource requires more time to complete the firmware upgrade process. During this time, it should not be interrupted. When the firmware upgrade is fully complete, TimeWizard automatically advances to the next screen.

Note: After the TS3000.hex download operation successfully completes, the TimeSource reboots so that it can use the newly installed firmware. Upon rebooting, the system’s output might enter the degraded region of the PRS mask for up to one hour.

Verifying the Firmware Version

12.After the firmware has downloaded successfully, the Status Information screen appears, as shown in Figure 3-26.

Figure 3-26. The Status Information Screen

Verify that the GPS.hex Ver and TS3000.hex Ver fields indicate that the correct versions of the GPS.hex and TS3000.hex firmware are now installed.

Setting Alarm Parameters

13.Click Next>> when the correct versions are installed. The Set the Alarm Parameters screen appears, as shown in Figure 3-27.

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Figure 3-27. The Set the Alarm Parameters Screen

The Load and Save buttons allow a file to be generated that saves the alarm parameters in a file called TS3Kconf.sym as default. The file name for a configuration can be saved by selecting the Save button and providing a file name. The Load button allows the user to load a saved file that will automatically configure the Alarm Parameters screen.

This screen allows the parameters for GPS and Holdover alarm conditions to be modified. If you do not want to modify any of the alarm paramete rs, click Next>> and continue with Step 21. Otherwise, continue with the next step.

14.Choose the alarm parameters as desired. Table 3-8 describes each setting.

Table 3-8. Alarm Parameters

Setting Description

Severity 1 The initial severity of the alarm. Service Affecting 1 The initial service affecting status of the alarm condition. Time to Severity 2 If the Escalate Alarm check-box is selected, the alarm will be escalated

to the severity and service affecting status selected under Severity 2 and Service Affecting 2, after the time period selected und er Ho ur s an d Mins has been reached. If the Escalate Alarm check-box is not selected, the alarm will not be escalated.

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Table 3-8. Alarm Parameters (Continued)

Setting Description

Severity 2 The severity of the alarm after it has been escalated. Service Affecting 2 The service affecting status of the alarm condition after the alarm has

been escalated.

Set the alarm parameters as needed.

15.Click Next>>. The View the Alarm Parameters window appears, as shown in

Figure 3-28.

Figure 3-28. The View the Alarm Parameters Window

This screen confirms the alarm parameter settings from the previous screen. To change any of the settings, click <<Back and repeat step 14.

16.Click Next>> when the alarm parameter settings are correct. The Exit Application window appears, as shown in Figure 3-29.

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Figure 3-29. The Exit Application Window

This screen allows you to save the log file from the download operation, or exit TimeWizard without saving the log file.

If you do not wish to save the log file, ensure that the Save Log File to check-box is not selected, then click Exit to complete the TimeWizard firmware installation procedure. To save the log file, continue with the next step.

Saving the Log File

17.Select the Save Log File to check-box, then click the button that is adjacent to the check-box to invoke the Save Log File dialog box, which appears as shown in

Figure 3-30.

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Factory Default Values

Figure 3-30. The Save Log File Dialog Box

18.Navigate to the location to where the log file is to be stored, enter a name fo r the log file into the File Name field, then click Save.

19.Click Exit to complete the TimeWizard firmware installation procedure.

Factory Default Values

The parameter values initially set at the factory are shown in Table 3-9

Table 3-9. Parameter Factory Settings

<aid> Parameter Setting

TS3100 FREQ=5MHz

TS3100 HOLDOVER ALARM

TOD=NONE ALMCOND=ALW IPNE=0.0.0.0 IPSUBNET=255.255.255.255 IPGATE=0.0.0.0 IPEM1=0.0.0.0 IPEM1PORT=0 IPEM2=0.0.0.0 IPEM2PORT=0 IPINACT=0 DCDPASSTHRU=INH DCDUSERPORT=2 BYPASS=ALW (990-72020-04 systems only)

TIME=24-0 SEV1=EV SEV2=MJ SAFF1=NSA SAFF2=SA

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Table 3-9. Parameter Factory Settings (Continued)

<aid> Parameter Setting

TS3100 GPS ALARM TIME=3-0

SEV1=EV SEV2=MN SAFF1=NSA SAFF2=NSA

GPS ANTCBLDLY=0

ANTELEVMASK=10

RO-A, RO-B ENSEMBLER=INH

MONITOR=INH

SPAN-A, SPAN-B ENSEMBLER=INH

MONITOR=INHSSM=INH SSM=INH SIGNAL=DIGITAL SSMCHANNEL=4

Chapter 3 Installing the TimeSource 3100

Factory Default Values

SPAN-A, SPAN-B LOS ALARM

SPAN-A, SPAN-B AIS ALARM

SPAN-A, SPAN-B LOS ALARM

SPAN-A, SPAN-B ERROR ALARM

RO-A, RO-B LOS ALARM

TIME=24-0 SEV1=EV SEV2=MN SAFF1=NSA SAFF2=NSA

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Table 3-9. Parameter Factory Settings (Continued)

<aid> Parameter Setting

RO-A, RO-B ERROR ALARM

TIME=24-0 SEV1=EV SEV2=MN SAFF1=NSA SAFF2=NSA

E1-A, E1-B FRAMING=CAS4

ALMOUT=AIS

COM-1, COM-2, COM-3

BAUD=9600 MONMSG=INH KEEPALIVE=0 ENDOFTEXT=00 ECHO=ALW COMPRI=ALW1 AUTOLOGOFF=20 HWCONTROL=INH SWCONTROL=INH PARITY=NONE STOP=1

COM-5001, COM-5002, COM-5003, COM-5004

MONMSG=INH KEEPALIVE=0 ENDOWTEXT=00 ECHO=ALW COMPRI=INH AUTOLOGOFF=20 SWCONTROL=INH

COM-5551 MONMSG=INH

KEEPALIVE=0 ENDOFTEXT=00 ECHO=INH COMPRI=INH AUTOLOGOFF=20 SWCONTROL=INH

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Chapter 4 TL1 Reference

This chapter provides information for using the TL1 language.

In This Chapter

 Conventions  Command Format  Response Format  Parameters  Autonomous Messages  Tasks/Commands  Commands

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Conventions

Uppercase letters in a command designate parameter values which must be entered as shown. Lowercase letters in a command are the parameter name, and the specific values that must be entered for the parameter. The Parameters section of this chapter describes the parameters and the values where a value is the same for all parameters. Parameter values for a particular command are listed with the command. The system accepts either uppercase, lowercase, or a mixture of both, but upper and lower case cannot be mixed within a parameter block.

The following symbols are used in the input and response messages: [ ] encloses an optional parameter { } encloses a group of parameters, at least one of which must be entered | separates alternatives in a group of parameters, at least one of which must

be entered

^ indicates a space (used in the description of the response format, but not

used in the command responses) _ separates command code fields : separates parameter blocks , separates parameters within a block ; terminates a command, and causes execution " " encloses text to be parsed by a machine /* */ encloses comments for humans encloses a TL1 named variable \" "\ encloses a description of a condition ... indicates the previous line in a response may be repeated as required

Command Format

A command consists of a command code of up to three fields separated by hyphens, followed by parameter blocks separated by colons. Figure 4-1 shows the command format. Parameter blocks consist of one or more parameters separated by commas.

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^^^<sid>^<d

Response Format

Parameter blocks may be null (contain no parameters), or contain one or more parameters. Two colons occur next to each other if a parameter block is null.

Multiple parameters in a parameter block are separated by commas. Two commas occur next to each other if a parameter is null.

Entering a semicolon at the end of the command indicates that the command statement is completed to the interpreter, and executes the command.

Figure 4-1. Command Format

Response Format

When a command is received and processed, a response is returned. All responses include a source identifier (<sid>), the date, the time, an M to indicate that it is a response to a command, and the correlation tag (<ctag>) that was entered with the command.

Figure 4-2 shows the completed response format. COMPLD indicates that the

command completed without error.

ate>^<time> M^^<ctag>^COMPLD ^^^/*LINK:,link>,CMD:<command>*/ ;

Note: If the command was a query, additional information is displayed before the semicolon.

Figure 4-2. Completed Response Format

Figure 4-3 shows the denied response format. DENY indicates that the command

was denied due to an error. The <errcde> parameter indicates the corresponding error type, or cause of the error.

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Parameters

^^^<sid>^<date>^<time> M^^<ctag>^DENY ^^<errcode> ^^^/* <error message> */ ^^^/*LINK:,link>,CMD:<command>*/ ;

Figure 4-3. Deny Response Format

Parameters

The parameters that may be used in commands, responses, and messages are defined in Table 4-1. When a parameter uses the same values in every instance, those values are listed with the parameter in the table. When the context requires different values for a parameter, the value is listed with the parameter in the applicable commands, responses, and messages.

Table 4-1. Parameter Definitions

Parameter Definition

<aid> Access identifier for the object of the command or message. It may have

more than one part.

<almcde> Alarm code. Identifies the severity of the alarm based on its prio rity of action.

If multiple alarms are reported, almcde is the highest severity of those reported.

<alt> Antenna location altitude in meters, specified to the thousandth of a meter,

referenced to mean sea level, in the forma t mm.mmm.

<atag> Automatic message tag. It is incremented by one for each autonomous

message. The <atag> value is a whole number from 001 throu gh 999, which

is reset to 001 at reset or when it rolls over. <command> Echo of the entered command. <conddescr> Text description of the condition. The <conddescr> value is limited to 64

characters starting and ending with a backslash and a double quot ation mark

(\"). Refer to the Troubleshooting chapter of this manual for the list of values. <condeff> Effect on the condition of the equipment. <condtype> Type of alarm condition. <ctag> Correlation tag used to correlate input and response messages. The ctag

contains 1 to 6 characters. It must be included in a command, and the same

ctag is returned in the response.

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Chapter 4 TL1 Reference

Table 4-1. Parameter Definitions (Continued)

<date> Current date in the 8-digit form: yyyy-mm-dd (command) or yyyy:mm:dd

(response or message), where yyyy is the year, mm is the month (01-12),

and dd is the day of the month (01-31). For example, May 3, 2000 is

2000-05-03. <errcde> Four-character mnemonic error code, which is one of the following:

EFON = equipment feature option not provide d

ENEQ = not equipped

ICNV = command not valid

IDNV = invalid data in command

IDRG = invalid data range in command

IIAC = invalid aid in command

IICT = invalid correlation tag

IIDT = invalid data parameter in command

IISP = invalid syntax or punctuation

IITA = invalid tid

PIUI = invalid or duplicate uid or pid (privileged users only)

RALB = All units of requested type are busy

RCBY = circuit is busy

SCSN = invalid command sequence

SDBE = internal database error

SNIS = not in service

SNVS = not in a valid state

SRCN = requested condition currently exists

SRQN = request invalid

SWFA = working unit failed

Parameters

<error message> Error code text message <link> Communication link identifier. <modifier> Equipment initiating the alarm or event message, which is one of the

following:

TS3100 = system software

GPS = GPS receiver software

RO-x = remote oscillator input

SPAN-x = E1 span input <ntfcncde> Notification code showing the alarm severity, which is one of the following:

CR = critical

MJ = major

MN = minor <ocrdat> Occurrence date in the 8-digit form: yyyy-mm-dd (command) or yyyy:mm:dd

(response or message), where yyyy is the year, mm is the month (01-12),

and dd is the day of the month (01-31). For example, May 3, 2000 is

2000-05-03. <ocrtm> Occurrence time in the 6-digit form: hh-mm-ss (command) or hh:mm:ss

(response or message), where hh is hours (00 to 23), mm is minutes (00 to

59), and ss is seconds (00 to 59). For example, 2:34 pm is14:34:00.

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Chapter 4 TL1 Reference

Parameters

Table 4-1. Parameter Definitions (Continued)

<pid> Private identifier, factory-set to “TS3000!!”. It is the initial password for the

TELECOM <uid>. Passwords are encrypted when stored in the TimeSource

3100, and are never transmitted from the shelf. The pid contains a

case-insensitive string of 8 to 10 ASCII characters, and must include at least

one letter, one numeral, and one special character from the following:

! @ $ % * ( ) + ’ ? / ‘ < <sid> Source identifier which is the name of the equipment sending the message.

The sid may be an identifier or text string, and may begin with a letter. A

maximum of 20 characters (limited to letters, digits, and hyphens) are

allowed. The sid is recommended to be the equipment's CLLI code. <spec_block> Replaced by a number of parameters within the command. Param eters are in

the format <name>=<value>, may be entered in any order, and must be

separated by a comma. <srveff> Identifies whether the alarm condition is service affecting:

SA = service affecting

NSA = not service affecting <tid> Target identifier which identifies the equipment (TimeSource 3100) to which

the command is directed. The tid must be a valid TL1 iden tifier of a maximum

of 20 characters (limited to letters, digits, and hyphens) beginning with a

letter. The <tid> is recommended to be the target's CLLI code, but it can be

null if the OS directly interfaces to the target. The <tid> can be omitted only if

connection is made directly to a single TimeSource 3100 Shelf. <time> Current time in the six-digit form: hh-mm-ss (command) or hh:mm:ss

(response or message), where hh is hours (00 to 23), mm is minutes (00 to

59), and ss is seconds (00 to 59). For example, 5:11:49 a.m. is 05:11:49.

<uap> User access level, used by a system administrator to assign a given level of

access to system users. User access level ranges from 1 to 5, with 1 being

the lowest access level, and 5 being the highest access level. <uid> User identifier, factory-set to TELECOM. The <uid> contains alphanumeric,

case-insensitive strings of 6 to 10 characters provisioned as valid login IDs. <uout> User inactivity password which indicates the number of days a system user

has not logged on to the system. The user inactivity time-out range is 0 to

180 days, with 0 indicating no time-out. <vldty> Validity of the performance monitoring data.

98 TimeSource User’s Guide 097-72020-01 Revision K – December 2005

Autonomous Messages

Autonomous messages are sent out when an alarm or event occurs. Two types of autonomous messages are used:

 Report Alarm: reports alarms  Report Event: reports events that are not alarms, or that have not yet become

alarms

Autonomous messages are listed on the following pages. After the messag e name, a definition of the message is given.

Report Alarm

This autonomous message appears when an alarm is raised, and appears again when the alarm is cleared.

Message:

Chapter 4 TL1 Reference

Autonomous Messages

^^^<sid> <date> <time>

M^^<almcde> <atag> REPT ALM EQPT <modifier> ^^^"<aid>:<ntfcncde>,<condtype>,<srveff>,

<ocrdat>,<ocrtm>,,,:\"<conddescr>\

"[:<dgntype>]"

Refer to Table 4-1 for parameter definitions.

Report Event

This autonomous message appears when an event is raised, and again when the event is cleared; also appears when a transient event occurs. An event is a state of the TimeSource 3100 that does not cause an alarm.

Message:

^^^<sid> <date> <time> M^^<atag> REPT EVT EQPT <modifier> ^^^"<aid>:<condtype>,<condeff>,<ocrdat>,<ocrtm> ,,,,:\"<conddescr>\"[:<dgntype>]"

Refer to Table 4-1 for parameter definitions.

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Chapter 4 TL1 Reference

Tasks/Commands

To perform each task, use the command listed beside that task in Table 4-2.

Table 4-2. Commands for Tasks

Task Command Page

Log user onto system Activate User 102 Log user off of system Cancel User 103 Copy software program or database Copy Memory 104 Delete equipment from the database Delete Equipment 106 Delete a user from system Delete User Security 107 Change communication port parameters Edit Communication 108 Change the system date and time Edit Date 111 Change equipment parameters Edit Equipment 113 Enter equipment into the database and allow the

equipment to be used for monitoring Enter a new user and configure the new user's user

name, password, and access level Reset the alarm log Initialize Log 125 Reset to zero all performance monitoring

parameters associated with a given aid Reset the system processor or GPS receiver

processor Deactivate the audible office alarm Operate Alarm Cutoff All 128 Display current system alarms Retrieve Alarm All 129 Display current alarms for specific equipment Retrieve Alarm Equipment 130 Display current communication port parameter

settings Display current system alarms and events Retrieve Condition All 134 Display current alarms and events for specific

equipment

Enter Equipment 122

Enter User Security 124

Initialize Register 126

Initialize System 127

Retrieve Communication 131

Retrieve Condition Equipment

135

Display parameter settings of equipment Retrieve Equipment 136 Display GPS status information Retrieve GPS Status 143 Display header information Retrieve Header 144

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Symmetricom TimeSource 3100 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

How to Use This Guide

Chapter 1 Overview of the TimeSource 3100

Overview

Global Positioning System

Physical Description

Roof Antenna

Functional Description

Overview

Antenna

IF Interface

Local Oscillator

Clock Extractors

Power Supply

NTP TimeServer

Network Time Protocol Password Activation

BesTime Ensemble Timing Generator

E1 or Analog Outputs

Eight Mixed E1/T1 Outputs (990-72020-06 Systems Only)

Eight Additional E1 Outputs (990-72020-02 Systems Only)

TOD Output

IRIG-B TOD Outputs (990-72020-05 Systems Only)

1 PPS Output

10 MHz Output

Two ESCIU Ports (990-72020-04 Systems Only)

Alarm Interface

Communications Ports

Ethernet

Passthrough

Alarm Programmability

Startup

Bridging/Holdover Behavior

Time Figure of Merit

Chapter 2 Engineering & Ordering

Site Survey

Lightning Suppressor Guidelines

Antenna Location Guidelines

Earth Ground Location Guidelines

Antenna Cable Choices

Remote Oscillator Cabling

Shelf Considerations

IRIG-B TOD (990-72020-05 Systems Only)

Systems

Standard System (Two E1 or 2.048 MHz Outputs)

With Eight Additional E1 or 2.048 MHz Outputs

With Eight Additional Mixed E1/T1Outputs

With Two E1 Synchronization Insertion (ESCIU) Ports

With Four IRIG-B TOD Outputs

User-Supplied Tools and Materials

For Antenna Installation

For Shelf Installation

Outputs, Power, and Miscellaneous

Chapter 3 Installing the TimeSource 3100

Unpacking the Unit

Installing the Antenna

Installing the Shelf

Installing Output Modules

Rack Mounting

Making Cable Connections

Frame Ground

Making Power Connections

Making GPS Antenna Connections

Making 10 MHz Output Connections

Making E1 or Analog Synchronization Output Connections

Making 1 PPS Output Connections

Connecting E1 or Analog Reference Inputs

Connecting Remote Oscillator Inputs

Installing a Module for Additional E1 or Analog Outputs

Installing the Mixed E1/T1 Output Module

Installing the IRIG-B TOD Output Module

Installing the ESCIU Port Module

Connecting the Time of Day Output

Making Ethernet Connections

Connecting to Communication Port 1

Connecting to Communication Port 2

Connecting Alarm Outputs

Making Craft Port Connections