installation maintenance harris mega star

5, 6, 7/8, 11 GHz

3xDS3, SONET, SDH

Digital Microwave Radio

MegaStar® 155 M:N

Installation &Maintenance

next level solutions

MegaStar 155 M:N Installation and Maintenance ManualIMN-110971-E01, January 2000

Copyright © 2000, HARRIS CORPORATION. All rights reserved. MegaStar and FarScan are trademarks of HARRIS CORPORATION.

Harris CorporationMicrowave Communications Division

350 Twin Dolphin DriveRedwood Shores, CA 94065-1408

http://www.harris.com

We’re ISO-certified.

• • • • • •Contents

Technical Support . . . . . . . . . . . . . . . . . . . . . . . . 11Customer Resource Center . . . . . . . . . . . . . . . . . . . . . . . . . . 11Telephone Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Fax Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Internet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Mail Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

USA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Canada . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Information to Provide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Customer Service . . . . . . . . . . . . . . . . . . . . . . . . 13Repair and Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Customer Training . . . . . . . . . . . . . . . . . . . . . . . 14Telephone Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Training Centers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Canada . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14U.S.A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

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CHAPTER 1 Introduction

MegaStar 155 M:N . . . . . . . . . . . . . . . . . . . . . . . . 15Frequency Bands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Capacity and Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Control and Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Feature Highlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Equipment Photos . . . . . . . . . . . . . . . . . . . . . . . . . 18Radio Frequency Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Signal Processing Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

About this Manual . . . . . . . . . . . . . . . . . . . . . . . . 20Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Special Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Channel Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Related Documents . . . . . . . . . . . . . . . . . . . . . . . 22

CHAPTER 2 General Information

Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . 23

Equipment Handling Precautions . . . . . . . . . . . 24Electrostatic Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Storage Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Regulatory Compliance . . . . . . . . . . . . . . . . . . . 25FCC Part 15 Emission Requirements . . . . . . . . . . . . . . . . . . . 25ETSI Emission Requirements . . . . . . . . . . . . . . . . . . . . . . . . . 25Department of Health and Human Services . . . . . . . . . . . . . . 25Manufacturer Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Federal Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Laser Radiation Warning . . . . . . . . . . . . . . . . . . . . . . . . . 26

ontents

CHAPTER 3 Installation

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 28Location and Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . 28Equipment Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . 28Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Tools and Test Equipment Required . . . . . . . . . 29

Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29Unpack the Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29Secure the Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Connect Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Check the Office Battery Voltage and Noise . . . . . . . . . . 31Check the SPU Controller Switch Settings . . . . . . . . . . . . . . . 31

Installation Procedures . . . . . . . . . . . . . . . . . . . . . 37Set the Radio’s Network Address . . . . . . . . . . . . . . . . . . . . . . 37Connect the Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38Align the Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Connect the FarScan Computer . . . . . . . . . . . . . . . . . . . . . . . 41

Verify the DVB Port Settings . . . . . . . . . . . . . . . . . . . . . . . 41

Add a Fictitious Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42Set Parity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44Set Aux/Spur DVB Port Settings . . . . . . . . . . . . . . . . . . . 46Verify Command Mask Changes . . . . . . . . . . . . . . . . . . . 48

Completing the Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Connect Other Radios to MegaStar . . . . . . . . . . 50Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50DVA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50DVL/DVT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Repeater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51DVM Excell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Repeater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

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Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51DVM-XT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Repeater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51MegaStar 1+1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52MegaStar M:N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

1:2 and 1:3 Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . 58SCAN Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

1:4 and 1:5 Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . 59SCAN Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

1:6 and 1:7 Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . 60SCAN Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60Verify Port Connections . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Wiring for Positive or Negative Battery Input . . 63SD-110617 Fuse Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Make a Delay Compensation Cable . . . . . . . . . . 68Determine the Cable Length . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Prepare and Connect the Cable . . . . . . . . . . . . . . . . . . . . . . . 70

CHAPTER 4 Verification

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Tools and Equipment Required . . . . . . . . . . . . . 72

Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72Inventory Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72Verify RFU and SPU Controller Software Version . . . . . . . . . 73Test the Decoder Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73Test the Phase Lock Source . . . . . . . . . . . . . . . . . . . . . . . . . 74Check the Transmitter Output Power . . . . . . . . . . . . . . . . . . . 74Verify the Receive Signal Level . . . . . . . . . . . . . . . . . . . . . . . 76

ontents

CHAPTER 5 Operation

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77System Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77FarScan Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77Third-Party Multiplexer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

FarScan Manual Commands . . . . . . . . . . . . . . . 78Protection Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79Tests and Loopbacks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79Monitor Signal Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80Initialize System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80Check System Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

CHAPTER 6 Routine Maintenance

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85Periodic Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85Inventory and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Maintenance Records . . . . . . . . . . . . . . . . . . . . . 86Recording Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

CHAPTER 7 Troubleshooting

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89Visual Alarm Indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

Turning off the Audible Alarm . . . . . . . . . . . . . . . . . . . . . . 90FarScan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

MegaStar Inventory Program . . . . . . . . . . . . . . . . . . . . . . . . . 91Adjustments and Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91Replacing Faulty Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

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Equipment Required . . . . . . . . . . . . . . . . . . . . . . 92Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92Alignment Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

SPU Troubleshooting . . . . . . . . . . . . . . . . . . . . . 93

RFU Troubleshooting . . . . . . . . . . . . . . . . . . . . . 94

CHAPTER 8 Repair and Replacement

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

In-Service Replacement . . . . . . . . . . . . . . . . . . . 96

Replacing Units . . . . . . . . . . . . . . . . . . . . . . . . . . 97Returning Failed Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Signal Processing Units . . . . . . . . . . . . . . . . . . . 98Voice Frequency Orderwire . . . . . . . . . . . . . . . . . . . . . . . . . . 98

Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99Remove the VF Orderwire . . . . . . . . . . . . . . . . . . . . . . . . 99Install the New VF Orderwire . . . . . . . . . . . . . . . . . . . . . . 99

Data Orderwire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101Remove the Data Orderwire . . . . . . . . . . . . . . . . . . . . . 101Install the New Data Orderwire . . . . . . . . . . . . . . . . . . . 101

Overhead Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102Remove the Overhead Processor . . . . . . . . . . . . . . . . . 103Install the New Overhead Processor . . . . . . . . . . . . . . . 103

Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104Remove the Power Supply . . . . . . . . . . . . . . . . . . . . . . . 105Install the New Power Supply . . . . . . . . . . . . . . . . . . . . 105

Demodulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107Remove the Demodulator . . . . . . . . . . . . . . . . . . . . . . . 107Install the New Demodulator . . . . . . . . . . . . . . . . . . . . . 107

ontents

Decoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108Remove the Decoder . . . . . . . . . . . . . . . . . . . . . . . . . . . 109Install the New Decoder . . . . . . . . . . . . . . . . . . . . . . . . . 109

Modulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111Remove the Modulator . . . . . . . . . . . . . . . . . . . . . . . . . . 111Install the New Modulator . . . . . . . . . . . . . . . . . . . . . . . . 111

IF Combiner (if equipped) . . . . . . . . . . . . . . . . . . . . . . . . . . . 112Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113Remove the IF Combiner . . . . . . . . . . . . . . . . . . . . . . . . 113Install the New IF Combiner . . . . . . . . . . . . . . . . . . . . . . 113

Switch Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114Remove the Switch Interface . . . . . . . . . . . . . . . . . . . . . 115Install the New Switch Interface . . . . . . . . . . . . . . . . . . . 115

3xDS3 Tributary Interface . . . . . . . . . . . . . . . . . . . . . . . . . . 116

Remove the 3xDS3 Tributary Interface . . . . . . . . . . . . . . 117Install the New 3xDS3 Tributary Interface . . . . . . . . . . . 117

Tributary Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118Remove the Tributary Interface . . . . . . . . . . . . . . . . . . . 119Install the New Tributary Interface . . . . . . . . . . . . . . . . . 119

SPU Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121Remove the SPU Controller . . . . . . . . . . . . . . . . . . . . . . 121

Install the New SPU Controller . . . . . . . . . . . . . . . . . . . . . 122

Reprogram the VF Orderwire Address . . . . . . . . . . . . . . . 123Alarm Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125Remove the Alarm Display . . . . . . . . . . . . . . . . . . . . . . . 125Install the New Alarm Display . . . . . . . . . . . . . . . . . . . . 125

Radio Frequency Units . . . . . . . . . . . . . . . . . . . 126Power Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127Remove the Power Amplifier . . . . . . . . . . . . . . . . . . . . . 127Install the New Power Amplifier . . . . . . . . . . . . . . . . . . . 127

Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129Remove the Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

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Install the Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Remove the Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . 131Install the Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

Filter/Switch Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133Remove the Filter/Switch Assembly . . . . . . . . . . . . . . . . 133

Install the Filter/Switch Assembly . . . . . . . . . . . . . . . . . . . 134

Low Noise Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135Remove the Low Noise Converter . . . . . . . . . . . . . . . . . 135Install the New Low Noise Converter . . . . . . . . . . . . . . . 135

IF Filter/Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137Remove the IF Filter/Amplifier . . . . . . . . . . . . . . . . . . . . 137Install the IF Filter/Amplifier . . . . . . . . . . . . . . . . . . . . . . 137

Phase Lock Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138Remove the Phase Lock Source . . . . . . . . . . . . . . . . . . 138Install the New Phase Lock Source . . . . . . . . . . . . . . . . 138

PLS Crystal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140Removing the Crystal . . . . . . . . . . . . . . . . . . . . . . . . . . . 140Installing the New Crystal . . . . . . . . . . . . . . . . . . . . . . . . 146

Test the Phase Lock Source . . . . . . . . . . . . . . . . . . . . . . . . 150Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

Reprogramming the PLS . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

Remove the Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156Install the New Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156

ontents

CHAPTER 9 Spare Parts, Return, Repair

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157Spare Products Support Center . . . . . . . . . . . . . . . . . . . . . . 159Repair and Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

Ordering Parts or Spares . . . . . . . . . . . . . . . . . 159

Repair and Return . . . . . . . . . . . . . . . . . . . . . . . 161

Module Exchange . . . . . . . . . . . . . . . . . . . . . . . 161

Evaluation Fee . . . . . . . . . . . . . . . . . . . . . . . . . . 162

Unrepairable Units . . . . . . . . . . . . . . . . . . . . . . 162

Return Freight . . . . . . . . . . . . . . . . . . . . . . . . . . 162

Return Material Authorization . . . . . . . . . . . . . 163

Service Center Locations . . . . . . . . . . . . . . . . . 164U.S.A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164Canada . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164

CHAPTER 10 Block Diagrams

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165

CHAPTER 11 Forms

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173

MegaStar 155 M:N 9

• • • •••

10 C

• • • •••

CHAPTER 12 Warranty Terms

Warranty and Product Support . . . . . . . . . . . . 177

Standard Product Warranty Terms . . . . . . . . . 178

Limitation of Damages . . . . . . . . . . . . . . . . . . . 180

Index

ontents

• • • • • •Customer Support

Technical Support

Customer Resource Center

If you are experiencing a traffic-affecting or traffic-threatening situation, technical support is available 24 hours a day, 7 days a week, including holidays. If you call the Customer Resource Center during nonbusiness hours, a Product Support Engineer will return your call within 30 minutes.

Normal business hours for the Customer Resource Center on Monday through Friday are:

USA: 6:30am to 5:00pm (Pacific Standard Time)Canada: 7:30am to 5:00pm (Eastern Standard Time)

Telephone Numbers

Technical support telephone numbers:

USA 1-800-227-8332(+1) 650-594-3800

Canada 1-800-465-4654(+1) 514-421-8333

Fax Number

Technical support fax number:

USA (+1) 650-594-3621Canada (+1) 514-685-4580

MegaStar 155 M:N 11

• • • •••

12

• • • •••

Internet

USA e-mail: [email protected] e-mail: [email protected] wide web: http://www.microwave.harris.com/cservice

Mail Address

USA

Harris CorporationMicrowave Communications DivisionCustomer Resource Center350 Twin Dolphin DriveRedwood Shores, CA 94065-1421

Canada

Harris CorporationMicrowave Communications DivisionCustomer Resource Center3 Hotel-de-VilleDollard-des-OrmeauxQuebec, Canada H9B 3G4

Please refer to our customer service web site for CRC addresses in other countries.

Customer Support

mailto:[email protected]


http://www.microwave.harris.com/cservice

http://www.microwave.harris.com/cservice

Information to Provide

Please provide the following information when you contact us:

• Your name, company, and telephone number.

• Equipment type, part number, and serial number (see label on back of shelf).

• Detailed description of the problem.

Customer Service

Refer to Chapter 9 for information about repairs, returns, and ordering spare radio assemblies.

Refer to Chapter 12 for service and warranty terms.

Repair and Return

If you require module repair service, call the Customer Service Center and first request a Return Material Authorization (RMA) number. This request ensures that the repair will be done in a timely manner and prevents any delays caused by incomplete or missing information.

Please provide the following information when you call (or fax):

• Your name, company, and telephone number (fax number)

• Part Number and Serial Number (see label on the back of the shelf)

• Purchase Order Number

• Billing and shipping addresses

• Any special return packing or shipping instructions

• Any special customs clearance information required

MegaStar 155 M:N 13

• • • •••

14

• • • •••

Customer Training

Telephone Number

1-800-227-8332 1-800-465-4654

Training Centers

Canada

U.S.A.

California

Texas

Harris Corporation 3 Hotel-de-VilleDollard-des-OrmeauxQuebec, Canada H9B 3G4

Harris Corporation350 Twin Dolphin DriveRedwood Shores, CA 94065-1421

Harris Corporation5727 Farinon DriveSan Antonio, TX 78249

Customer Support

Chapter 1

• • • • • • Introduction

MegaStar 155 M:N

MegaStar is a line-of-sight 3xDS3, SONET, or SDH microwave radio. It is a compact, technologically advanced system that implements and manages synchronous or asynchronous networks. MegaStar enables rapid network construction and can provide backup for critical traffic on fiber optic links.

MegaStar is controlled and monitored by FarScan software on a standard computer. For more details about the program, refer to the FarScan manual.

This manual contains installation, maintenance, and operation procedures for MegaStar 155 M:N, which is sold in the USA and internationally.

Frequency Bands

MegaStar radios are available for the following frequency bands:

• 5 GHz (4.4 - 5.0 GHz)• 6 GHz (5.925 - 7.125 GHz)• 7/8 GHz (7.125 - 8.500 GHz)• 11 GHz (10.7 - 11.7 GHz)

Capacity and Interface

The MegaStar digital microwave radio has a 155 Mb/s capacity and can transport 2,016 voice equivalent channels at a rate of 64 Kb/s.

MegaStar 155 M:N 15

• • • •••

16 C

• • • •••

Control and Monitoring

MegaStar is a sophisticated, full-featured product that is monitored and controlled by FarScan software.

To install the radio, verify its operation and perform routine maintenance, a FarScan computer with the appropriate database is required. The MegaStar Utility program, which runs under Microsoft® Windows®, is also necessary to perform certain configuration and maintenance tasks.

Configurations

MegaStar 155 M:N radios come in the following configurations:

• Terminal 0:1

• Terminal 1:1 (0:2)



MegaStar systems can be upgraded or converted after they are purchased into a different configuration. To find out what conversions are readily available, contact Harris (see page 11). A representative can help you choose a conversion kit that fits your system and needs.

hapter 1 Introduction

ts

Feature Highlights

Standard MegaStar features include the following:

• Fully digital adaptive time and frequency domain equalizers

• Forward error correction (FEC)

• Anticipatory errorless receiver switching

• Anticipatory errorless space diversity data switching

• Reverse channel switching

• Automatic transmit power control (ATPC)

• Inventory reporting

• System control and alarm network

• FarScan local and remote equipment monitoring and control

• StarScan network management

• Visual “replace me” and “loss of signal” indicators for key componen

• Self-healing architecture maintains performance/configuration integrity

• Self-adapting circuitry

• Local or remote software download

• OC-3 signal transport

• Up to four channels in a 7’ x 23” rack

• 128 QAM (LSB CSOC FEC) modulation/demodulation

• Integral service channel(s)

• Software download utility

• In-service path, section, line performance monitoring

MegaStar 155 M:N 17

• • • •••

18 C

• • • •••

Equipment Photos

Radio Frequency Section

poweramplifier

receiver

transmitter

filter/switchassembly

cooling fans

assembly

assembly


Signal Processing Section A

larm D

isplay Unit

Pow

er Supply

Dem

odulator

Decoder

IF Com

biner (optional)

Modulator

Tributary Interface

Sw

itch Interface

SP

U C

ontroller

Tributary Interface

IF Com

biner (optional)

Decoder

Pow

er supply

Dem

odulator

Overhead P

rocessor

VF O

rderwire

Data O

rderwire

Service

HandsetChannel

Modulator

MegaStar 155 M:N 19

• • • •••

20 C

• • • •••

About this Manual

Scope

This manual contains procedures for installing, commissioning, and troubleshooting the MegaStar radio. It also contains safety and customer service information.

Organization

This manual is organized as follows:

Customer Support - Telephone numbers and contact information for Harris Customer Resource Center.

Chapter 1 - Introduction to the MegaStar radio

Chapter 2 - Safety cautions and regulatory information

Chapter 3 - Equipment installation and turn-up procedures

Chapter 4 - System verification procedures

Chapter 5 - Equipment operation procedures using FarScan

Chapter 6 - Routine maintenance procedures

Chapter 7 - Troubleshooting information and flow charts

Chapter 8 - How to repair and replace faulty components

Chapter 9 - How to order spare parts, return faulty units, and request repairs

Chapter 10 - Block diagrams

Chapter 11 - Forms (routine maintenance log, return material authorization, service registration, instruction manual survey)

Chapter 12 - Product warranty terms


Conventions

To protect both personnel and equipment, the following conventions are used throughout this manual.

Special Terms

Radio

The term “radio” refers to an equipment rack containing a complete transmit and receive system.

The “exclamation point” in a triangle indicates a Warning or Caution. This notice alerts the personnel to possible damage to equipment, interruption of service, or a violation of a legal requirement.

The “pencil and pad” indicates a Note. This notice clarifies or qualifies a specific point or instruction in the procedure or description.

The “stop sign” indicates a pause in the procedure to perform some other task. Once you have completed the other task, you may continue with the procedure.

MegaStar 155 M:N 21

• • • •••

22 C

• • • •••

Channel Configuration

This manual refers to channels in the MegaStar radio as shown in the following diagram:

Related Documents• MegaStar Software Utilities Manual

• MegaStar Reference Manual

• System Application Information

• FarScan for Windows Instruction Manual

1 2 3 4

1

3

2

4

0:N

1 P 2 3

1

2

P

3

1:N

P = protection


Chapter 2

• • • • • • General Information

Safety PrecautionsThe following general safety precautions must be observed at all times.

• Read all warning labels on the equipment. Failure to heed warnings can result in serious injury to you, or can damage the equipment.

• Observe all electrical precautions.• Verify that the grounding configuration complies with local code practice

and requirements.

Verify grounding before the electrical power source is connected to the equipment.

MegaStar 155 M:N 23

• • • •••

24 C

• • • •••

Equipment Handling Precautions

Electrostatic Discharge

Some of the components in the MegaStar radio are sensitive to static electricity, or electrostatic discharge (ESD) and thus can be damaged or destroyed by ESD that builds up in your body through routine activity. ESD-sensitive components are marked with the following symbol:

Storage Requirements

MegaStar contains moisture-sensitive devices (MSDs) that are shipped in vacuum-sealed packages for protection. Moisture can build up these units when they are not powered up or in active use. To prevent moisture damage, store units that are not being used in a dry place.

Before working on MegaStar, discharge any static electricity you may be carrying. Handle the equipment in a static-free environment and use a grounding wrist or heel strap.

hapter 2 General Information

Regulatory Compliance

FCC Part 15 Emission Requirements

This equipment generates, uses, and radiates radio frequency energy, and if not installed and used in accordance with this instruction manual, may cause interference to radio communications. It has been tested and found to comply with the limits for a Class A computing device pursuant to Subpart B of Part 15 of the FCC Rules, which are designed to provide reasonable protection against such interference when operated in a commercial environment.

Operation of this equipment in a residential area is likely to cause interference, in which case the user of the MegaStar radio, at his own expense, will be required to take whatever measures required to correct the interference.

ETSI Emission Requirements

MegaStar can be furnished to meet the emission and susceptibility requirements provided within the European Telecommunications Standard ETS 300 385 for digital fixed radio links 2-Mbit/s and higher.

Department of Health and Human Services

The Department of Health and Human Services regulates the manufacture of laser equipment through the Food and Drug Administration. Section 21, Parts 1010 and 1040 of the Code of Federal Regulations require that information on the manufacture and compliance to rules on laser devices be posted on the equipment.

Because the MegaStar radio is equipped with optical transceivers, the assembly is classified as a laser device.

Test results show that properly shielded cables are required to maintain compliance with the Class A limits for radiated emissions. This equipment also requires licensing for operation under FCC Title 47, Part 101.

MegaStar 155 M:N 25

• • • •••

26 C

• • • •••

Manufacturer Labels

Federal Compliance

In compliance with Federal regulations, labels indicating compliance with FCC regulations are installed on each MegaStar radio:

Laser Radiation Warning

A label warning against dangerous laser radiation appears immediately below the optical connectors on the optical tributary interface cards (SPU shelf).

hapter 2 General Information

Chapter 3

• • • • • • Installation

Introduction

Safety Precautions

The installation, maintenance, or removal of radio equipment (including grounding) and the radio antenna system must be performed by qualified personnel.

Harris is not responsible or liable for the improper performance of the equipment, damage to the equipment, or injury to personnel caused by improper practices.

WARNING! RADIATION HAZARD

Do not open waveguide with RF power on.

Do not connect power to the radio assembly unless the transmitter is properly terminated. The transmitter is terminated when its output is connected to the antenna, to test equipment, or to a dummy load.

Only properly trained personnel should operate this equipment.

MegaStar 155 M:N 27

• • • •••

28 C

• • • •••

over

e or

Requirements

Location and Environment

Install MegaStar in a sheltered area that has proper ventilation and access space for the front and back of the radio.

Equipment Cooling System

MegaStar’s covers are an integral part of the radio cooling system. If a cis missing or isn’t properly installed, the cooling airflow is not effective.

Power Source

An appropriate DC power source must be available at the location. Thradio can be equipped for operation with either plus or minus 24V DC plus or minus 48V DC.

Make sure there are at least three feet (one meter) of space between the radio and strong magnetic fields or sources of impulse noise.

External connections to this equipment must meet IEC 1000-4-5 (4kV) surge protection standards.

hapter 3 Installation

Tools and Test Equipment Required

• Portable computer with the following programs installed:

FarScan for WindowsCurrent equipment databaseMegaStar Inventory software

• Digital Multimeter (Fluke Model 77 or equivalent):

3-1/2 digitAccuracy 0.1% to ±60V DC, 1% from 10 mV AC

• Power Meter (HP 435B):

50 ohm power sensor100 kHz to 11 GHz, ±1% accuracyPower range: -25 dBm to +33 dBm (with medium and high power heads)

• Frequency Counter:

50 ohm nominal impedanceCapable of measuring up to 11 GHz-20 dBm sensitivity10-digit display resolution

Procedure

Unpack the Radio

1. Unpack the radio and set it upright.

2. Remove the front covers from the radio.

Firmly grasp each side of a cover and pull it straight out.

The equipment listed below is required for verifying that the radio installation meets customer requirements.

MegaStar 155 M:N 29

• • • •••

30 C

• • • •••

3. Examine the components to make sure nothing was dislodged or damaged during shipment.

4. Use the bill of materials as a reference to make sure all the components are present.

5. When you are satisfied that the radio arrived in good condition, replace the plastic covers.

Secure the Radio

Refer to the Harris field installation guide for instructions on securing the radio.

Connect Power

The radio is shipped with the power wiring in place. The fuse panel at the top of the rack routes the battery input to the equipment in the rack.

If there are signs of damage, such as a dented crate or broken equipment, file a damage claim with the shipper and notify Harris Customer Resource Center as soon as possible.

The bill of materials is in the sales order specific binder, which was shipped with the radio.

Be careful not to trap the delicate optical cables coming from the SPU shelf between the cover and the frame.


e

ion:

MegaStar is equipped to operate with either +/- 24V DC or +/- 48V DC.

1. Make sure an appropriate DC power source is available.

2. Install power runs and separate fusing from the office battery distribution system to the fuse panel inputs.

3. Verify that power is connected to the SPU and RFU through correct fuses on the fuse panel.

4. Make sure the connections and fuse ratings are recorded on the fuse card, located on the fuse panel cover.

Check the Office Battery Voltage and Noise

1. Check the battery (source) voltage.

For a 24V source, the voltage must be between 21 V and 28 V; for a 48V source, the voltage must be between 42 V and 56 V. (The battery polarity may be positive or negative.)

2. Check the office battery noise with an oscilloscope.

3. If the battery noise level is greater than 50 mV peak-to-peak, install a filter in the battery line to the equipment.

Check the SPU Controller Switch Settings

Switch blocks labeled “S2” and “S3” on the SPU Controller card must bconfigured according to the MegaStar radio configuration. (Refer to page 19 for the card’s location on the SPU shelf.)

The following illustration shows the slot order as referred to in this sect

External connections to MegaStar must meet IEC 801-5 or Bellcore TR-NWT-1087 (voltage surge level 1 only) surge protection standards. Surge protection kits are available from Harris.

MegaStar 155 M:N 31

• • • •••

32 C

• • • •••

Figure 3-1 Slot Order

The Data Orderwire and VF Orderwire cards can be installed in the first two half-height slots on the SPU shelf (see Figure 3-1) in the following combinations:

The Overhead Processor must be installed in “slot 3” (see Figure 3-1).

Slot 1 (E1 byte) Slot 2 (E2 byte)

None None

VF Orderwire None

VF Orderwire VF Orderwire

VF Orderwire Data Orderwire

Data Orderwire None

Data Orderwire Data Orderwire

1 2 3


Figure 3-2 shows the location of the switch block (labeled “S2”) on the SPU Controller card.

Figure 3-2 SPU Controller Switch Block and Jumper Location

JP4 and JP5 jumpers

JP1, JP2, and JP3jumpers

S2 and S3 switch blocks

MegaStar 155 M:N 33

• • • •••

34 C

• • • •••

Each switch block contains eight switches that can be set to either “1” or “0.” Refer to Table 3-1 for specific configuration settings.

Figure 3-3 S2 and S3 Switch Blocks

Table 3-1 S2 Switch Options

Do not use the “ON” mark on the switch block as a reference. Use the “1” and “0” markings on the board instead.

Configuration S2 Switch Block

Slot 1 Slot 2 Slot 3 1 2 3 4 5 6 7 8

Orderwires and Overhead Processor

None None None 0 0 0 0

None None OHP 0 0 0 1

VF None OHP 1 0 0 1

VF VF OHP 1 1 0 1

Data None OHP 1 0 1 1

Data Data OHP 1 1 1 1

Cust. External Inputs

No alarm with N/O relay contacts (normal)No alarm with N/C relay contacts (alarm)

01


Table 3-2 S3 Switch Options

Configuration S3 Switch Block

M:N 0:N 1 2 3 4 5 6 7 8

Channels Equipped

1 and P 1 and 2 Half equippedFully equipped

00

00

01

11

2 and 3 3 and 4 Half equippedFully equipped

11

00

01

11


00

11

01

11


11

11

01

11

IF Combiner In slot #7 Not equippedEquipped

01

In slot #14 Not equippedEquipped

01

Protection Channel

Available (M:N) Without trafficWith traffic

01

00

Not available (0:N) 1 1

MegaStar 155 M:N 35

• • • •••

36 C

• • • •••

The AUX and SPUR serial ports allow the Tx and Rx signals to be selectable between two mark/space voltage polarities: RS232 and inverted RS232 (only the Tx and Rx data lines are inverted, not handshaking). The following jumpers select these settings (see Table 3-3 for jumper locations on the PC card):

Table 3-3 SPU Controller Jumpers

The system protection configuration is set with jumper straps J4 and J5 (see Figure 3-1 for jumper locations):

Label Function Jumper

JP1-WDOG Sys operationSys develop.

OutIn

JP2-SPUR RS-232 levelsRS-423 levels

OutIn

JP3-AUX RS-232 levelsRS-423 levels

OutIn

JP4-M:N 1+10/M:N

OutIn

JP5-M:N 1+10/M:N

OutIn

JP4 and JP5 PROTECTION TYPE

Removed Sets system for 1+1 protection.

Installed Sets system for M:N protection.


Installation Procedures

Set the Radio’s Network Address

When the MegaStar radio is configured in the factory, it may be assigned a generic equipment and orderwire address. You can make any necessary changes to these addresses based on your network plan. To change the address, do the following:

1. Connect FarScan to the radio. (Refer to the FarScan manual for details.)

2. Turn the system connection online.

3. Send manual command 908, “Set Equipment Address” and click “Alter Setting.” The Form Command Variable Pattern window will appear.

4. Select the address range that the new address falls within and click “Next.”

For example, if the desired address is 283, select “Address Range 256 - 511.”

MegaStar 155 M:N 37

• • • •••

38 C

• • • •••

Connect the Antenna

Follow these steps to install each antenna:

1. Mount the antenna according to standard practice. (If they are available, refer to the manufacturer’s instructions.)

5. In the next window that appears, click on the values that add up to the desired address. Click “Next.”

For example, 256 + 16 + 08 + 02 + 01 = 283

6. When the confirmation window appears, check that the values add up to the desired address and click “Send” to set the new address.


2. Determine lengths and prepare the flexible/rigid waveguide that will be used to connect the antenna to the radio.

3. Connect the waveguide to the antenna.

4. Connect the antenna waveguide to the radio.

The antenna system waveguide flex section connects to the waveguide flange on the antenna coupling unit.

5. Secure all cables and waveguide assemblies.

6. Ground the antenna waveguide according to recommended or regulatory practice.

7. Pressurize the waveguide and check all waveguide connections for leaks. Tighten the joints as required.

Align the Antenna

1. Point the antenna as directly as possible towards the antenna for the coordinating site.

2. Connect a FarScan computer to the radio.

Use the flexible waveguide to interface between the radio’s waveguide flange and the rigid waveguide. This will allow for flexibility in movement should a seismic disturbance occur.

In M:N networks, the return loss presented to the radio at the antenna waveguide must not be lower than 24 dB.

If you are not familiar with FarScan, please refer to the FarScan manual for detailed information on how to carry out the following steps.

MegaStar 155 M:N 39

• • • •••

40 C

• • • •••

3. Use SelectPoll to poll the target equipment.

Send command 174 or 176 for the receiver/antenna to be aligned. (For example, for Receiver A1 [or B1], send FarScan RSL command 174.)

4. Check the AGC voltage using the test points on the Alarm Display card.

5. In a system equipped with IF Combiners, use FarScan command 174 to view the main antenna RSL. Use command 175 to view the diversity antenna RSL.

6. Fine-tune the antenna alignment until the AGC voltage indicates a maximum receive signal level.

Only the receiver chosen by the RSL command will display its AGC voltage at the AGC test point.

In systems equipped with IF Combiners, the AGC test points on the Alarm Display Unit are disabled. Use the RSL indicated in FarScan to align the antenna.

DACGND


7. If you are aligning a diversity antenna, repeat steps 1 through step 6.

Connect the FarScan Computer

Use this procedure to connect the FarScan computer to the MegaStar radio’s Aux or Spur ports:

1. Remove the SPU Controller card.

2. If necessary, remove the Aux strap (JP2) or Spur strap (JP3) for the RS232.

Figure 3-4 JP2 and JP3 Straps

3. Reinsert the SPU Controller. The SPU shelf will momentarily reboot. (This is a non-service affecting procedure.)

Verify the DVB Port Settings

Verify the Aux or Spur DVB port settings by doing the following:

1. Remove the SPU Controller card and verify that the Aux or Spur port straps are set correctly:

While the SPU shelf reboots, the SPU Controller is temporarily prevented from responding to SCAN information. SCAN response will resume after the reboot is complete.

MegaStar 155 M:N 41

• • • •••

42 C

• • • •••

RS 232 - JP2 (Aux) or JP3 (Spur) = removed

2. Replace the SPU Controller card.

Add a Fictitious Site

Add a fictitious site to the current equipment (*.eqw) file using the Equipment File Editor.

1. Assign a site number (between 1 and 999) that is not already in use.

2. Assign a hardware address (between 1 and 999) that is not already in use. Refer to the following note:

3. Set the equipment type for this fictitious site to “unknown.”

Removing and reinserting the SPU Controller will cause the SPU shelf to reboot. This non service-affecting initialization process will momentarily prevent SCAN information from being responded to. SCAN response will resume after the SPU Controller initialization routine is complete.

The FarScan for Windows manual contains more detailed information about the following steps.

The hardware address for the fictitious site must fall within one of the following DVB address ranges that does not contain any addresses used or planned for use in the system:

DVB ranges:001 to 095 192 to 287 544 to 799096 to 191 288 to 543 800 to 999


•

The following example shows an Equipment File set up with a fictitious site:

4. Connect the FarScan computer to the FARSCAN port (DB25) on the Alarm Display card.

5. Send command 911, “Display Port Baud Rate,” and click “Inquiry.”

The current settings will be displayed in the Commands/Responses portion of the Manual Command window.

If the Aux or Spur port baud rate is not set for 9600 and no parity, skip to “Set Parity” on page 44.

If the port baud rate is already set for 9600 and no parity, skip to step 5 in “Set Parity.”

Site # Site Name Hardware Address #

Type

001 Nearbyhill 1 MegaStar

002 Farawayhill 2 MegaStar

003a

a. Site added.

Fiktishusite 100 Unknownb

b. DVB range selected 096 to 191

6. Highlight Display Current Baud Rate and Comm. 8, AUX or Comm. 9, SPUR.

7. Click “Next.” When the Full Selection window appears, click “Send.”

MegaStar 155 M:N 43 • • •••

44 C

• • • •••

g:

Set Parity

If the Aux or Spur port is not set for 9600 with “no parity,” do the followin

1. Send manual command 913, “Set Port Baud Rate,” and click “Alter Setting” to change the Aux or Spur port settings.

2. Highlight Set New Baud Rate and the appropriate Comm. port for Aux or Spur. Click “Next.”

3. Highlight Set Baud Rate 9600 bps and no parity. Click “Next.”

4. When the confirmation window appears, click “Send.”


6. Highlight Save Current Setting and the appropriate Comm. port for Aux or Spur. Click “Next.”

7. Highlight 9600 bps and no parity. Click “Next.”



10. Highlight Confirm New Setting and the appropriate Comm. port for Aux or Spur. Click “Next.”

11. Highlight 9600 bps and no parity. Click “Next.”



14. Highlight Display Current Baud Rate and the appropriate Comm. port. Click “Next.”


15. When the confirmation window appears, click “Send.” The Aux or Spur port baud rate changes will be displayed in the Commands/Responses portion of the Manual Command window.

16. Send command 919, “Set All DVB Ports,” and click “Alter Setting.”

17. In the window that appears, highlight Set New DVB Command Mask and Comm. 8, AUX or Comm. 9, SPUR. Click “Next.”


MegaStar 155 M:N 45

• • • •••

46 C

• • • •••

Set Aux/Spur DVB Port Settings

Pass responses to the Aux or Spur port Response Mask. This is only for the DVB address range in which the fictitious site hardware address falls. Do the following:

1. Send command 919, “Set All DVB Ports,” and click “Alter Setting.”

2. In the window that appears, highlight Set New DVB Response Mask and Comm. 8, AUX or Comm. 9, SPUR. Click “Next.”

3. To pass the DVB range that the fictitious site’s hardware address falls into, highlight the following selections:

For example:

Fiktishusite hardware address #: 100PASS DVB range: 096 to 191


4. Send command 917, “Display DVB Port Status,” and click “Inquiry.”


7. Change the Master Site # in the Equipment File to the site number of the fictitious site. (Refer to the FarScan for Windows Manual.)

5. In the window that appears, highlight Display Current Response Mask and Comm. 8, AUX or Comm. 9, SPUR. Click “Next.”

MegaStar 155 M:N 47

• • • •••

48 C

• • • •••

Verify Command Mask Changes

Verify the Aux or Spur port command mask changes by doing the following:

1. Send command 917, “Display DVB Port Status,” and click “Inquiry.”


Completing the Connection

1. Disconnect the FarScan computer from the FARSCAN port on the Alarm Display card.

2. Connect the FarScan computer to the Aux or Spur port on the SPU Controller.

2. In the window that appears, highlight Display Current Command Mask and Comm. 8, AUX or Comm. 9, SPUR. Click “Next.”


3. In FarScan’s System Connection setup menu, verify that the COM port settings are as follows:

Baud Rate: 9600Data Bits: 8Parity: NoneStop Bits: 1

5. Click “Connect.” The Sys “LED” in the main FarScan window will turn green.

The MegaStar Aux or Spur port is now ready for use as a permanent FarScan connection.

4. Deselect both Modem Connection and Check Hardware Connection boxes. Click “Ok.”

MegaStar 155 M:N 49

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50 C

• • • •••

Connect Other Radios to MegaStar

This procedure describes how to connect the following radios to MegaStar:

• Constellation

• DVA

• DVL/DVT

• DVM Excell

• DVM-XT

• MegaStar 1+1

• MegaStar M:N interconnection

Equipment Required

To connect other radios to MegaStar, you will need the following:

• FarScan for Windows computer connected to the FarScan connector on the Alarm Display card.

• Null cable (pin 2 to 3, pin 3 to 2).

DVA

1. On the DVA, connect to COMM 1, 2, 3, 4 or 5.

2. If you are using COMM 1 or 2, set the Protection/Alarm card strap S1-3 to OFF.

3. Make sure the Com port is set to 9600 baud.

These instructions assume that the Scan baud rate is 9600. It also assumes that you are using FarScan for Windows.


DVL/DVT

Repeater

1. Connect to INT CNTL (J-31).

Terminal

2. Connect to INT CNTL (J-31) or EXT B (J-30).

3. On the Protection/Alarm card, set strap A/B to “A.”

DVM Excell

Repeater

1. Connect one end of the null cable to INT CNTL (J31).

Terminal

2. Connect one end of the null cable to INT CNTL (J-31) or EXT B (J30).

3. On the Protection/Alarm card, S1-5 must be ON. Strap B-2 should be set for 9600 baud.

DVM-XT

Repeater

1. Connect to INT CNTL (J-31).

Terminal

2. Connect to INT CNTL (J-15) or EXT B COMM 2 (J-17).

3. On the Protection/Alarm card, set strap A/B to “A.”

MegaStar 155 M:N 51

• • • •••

52 C

• • • •••

MegaStar 1+1

1. If you are connecting to the SPUR port, strap JP2 on the SPU Controller to “IN.”

If you are connecting to the AUX port, strap JP3 on the SPU Controller to “IN.”

2. Start FarScan and turn the connection online. (Refer to the FarScan for Windows manual for details.)

3. Send manual command 913, “Set Port Baud Rate,” and click “Alter Setting.”

4. In the window that appears, highlight ‘Set New Baud Rate’ and ‘Comm. 8, AUX’ or ‘Comm. 9, SPUR’.

Click “Next.”


5. Highlight Set Baud Rate 9600 bps and Odd Parity.

Click “Next.”

6. When the ‘Full Selection’ window appears, click “Send.”

MegaStar 155 M:N 53

• • • •••

54 C

• • • •••

7. Again, send command 913, “Set Port Baud Rate,” and click “Alter Setting.”

8. Highlight ‘Save Current Setting’ and ‘Comm. 8, AUX’ or ‘Comm. 9, SPUR.’

Click “Next.”

9. Highlight Set Baud Rate 9600 bps and Odd Parity.

Click “Next.”


10. Once again, send command 913, “Set Port Baud Rate,” and click “Alter Setting.”

The following window will appear:

Click “Send.”

11. Highlight ‘Confirm New Setting’ and ‘Comm. 8, AUX’ or ‘Comm. 9, SPUR.’

Click “Next.”

MegaStar 155 M:N 55

• • • •••

56 C

• • • •••


The current settings will be displayed in the Commands/Responses portion of the Manual Command window.

12. In the window that appears, highlight ‘Set Baud Rate 9600 bps’ and ‘Odd Parity.’ Click “Next.”

13. When the Full Selection window appears, click “Send.”

15. Highlight Display Current Baud Rate and Comm. 8, AUX or Comm. 9, SPUR.

16. Click “Next.” When the Full Selection window appears, click “Send.”


MegaStar M:N

In an M:N system, certain intershelf port connections are essential to the proper operation of the system. The protection SPU must have a direct connection to each of the other SPUs that make up that side of the M:N system’s hop.

These direct connections are used only by the automatic protection switching algorithm. Therefore, SCAN messages cannot pass through them. To allow SCAN commands to reach every SPU, the AUX and SPUR ports of neighboring SPUs should be connected.

Refer to the illustrations that follow for general interconnection information.

MegaStar 155 M:N 57

• • • •••

58 C

• • • •••

1:2 and 1:3 Configurations

If the system is a 1:2 or larger, connect the protection SPU's Megascan port to the Megascan port of the SPU Controller that handles channels 2 and 3.

SCAN Channel

Connect the Protection SPU's AUX port to the SPUR port of the SPU Controller that handles channels 2 and 3.

Figure 3-5 1:3 System Interconnection

P1 2 3 P1 2 3

SCAN channel



If the system is a 1:4 or larger, connect the protection SPU's CIT port to the Megascan port of the SPU which handles channels 4 and 5.

SCAN Channel

Connect the AUX port of the SPU which handles channels 2 and 3 to the SPUR port of the SPU which handles channels 4 and 5.


SCAN channel

P1 2 3 54 P1 2 3 54

MegaStar 155 M:N 59

• • • •••

60 C

• • • •••


If the system is a 1:6 or larger, connect the protection SPU's SPUR port to the Megascan port of the SPU which handles channels 6 and 7.

SCAN Channel

Connect the AUX port of the SPU which handles channels 4 and 5 to the SPUR port of the SPU which handles channels 6 and 7.

Connect the F1 “A” and F1 “B” ports (via RF) to the SPU at the far end of the hop which handles the same channels as the SPU at the near end.


54 6 7P1 2 3 54 6 7P1 2 3

SCAN channel


rts

h ill be

t a 1:4 em

ss of to its on,”

of the nding pects

t the wo U or

ID n (ID hich

on

Verify Port Connections

FarScan manual command 910, Port Connection Status, can be used to check the status of the port connections in a M:N system. It returns the status of the AUX, SPUR, CIT, F1 “A,” F1 “B,” and Megascan ports. These po(or a subset of them) are used by the automatic protection switching algorithm to send the messages which enable the M:N system to switcchannels to or away from the protection channel. Each of these ports win one of five states, which are as follows:

Port Connection Not Needed - This means that the M:N system does noneed the port to be connected. For instance, only the Protection SPU ofor larger needs the CIT port connection, so the other SPUs in the systwould report, “CIT Connection Not Needed.”

Port Can’t Make Connection (alarm state) - If an SPU needs its port to beconnected, it first sends a command 008 out that port to get the addrethe SPU connected to the other end. If it does not receive a response command 008, then the status of the port is, “Port Can't Make Connectiand it will keep sending command 008.

Port Incorrectly Connected (Alarm state) - If an SPU needs its port to be connected, it first sends command 008 out that port to get the address SPU connected to the other end. If it receives a response, it begins se“heartbeat” messages to the SPU at the other end of the port, and it exto receive similar heartbeats from the other end. If it does not receive heartbeats from the other end, or if the received heartbeats contain unexpected information, then it determines that something is not right aother end, and the status of the port is, “Port Incorrectly Connected.” Tpossible reasons for this are that the port is connected to the wrong SPit is connected to the correct SPU but to the wrong port.

An SPU sends “heartbeats” containing its local equipment address, itsnumber, the port through which it is connected to the other SPU, and aindication whether or not it is receiving the heartbeats of the other SPU.Number: Each SPU on one side of a M:N hop has a unique ID number wis used by the automatic protection switching algorithm.) An SPU determines its ID number by looking at the settings of the dip switchesits SPU controller card. (See page 35 for the dip switch settings.)

MegaStar 155 M:N 61

• • • •••

62 C

• • • •••

, d/or

se. n or

stem ed.

Table 3-4 SPU Identification

Port Connection On Line - When an SPU has received a response to a command 008 sent out through a needed port, and has received a valid heartbeat from the SPU at the other end of the port’s connection, then the status of the port becomes “Port Connection On Line.”

Port OK, but Not Monitored - Depending on the value of N in a M:N systemand on whether this is the protection SPU or not, the Megascan, CIT, anSPUR ports will be “Dedicated” to the protection switching algorithm's uThe Port will only be dedicated once a port at one end of the connectiothe other gets the status “Port Connection On Line.” Once a port is dedicated, SCAN messages can no longer pass through it, and the sywill no longer monitor the port to insure that the connection is maintainThus, the status of the port becomes “Port OK, but Not Monitored.”

M:N 0:N ID

1 and P 1 and 2 0

2 and 3 3 and 4 1

4 and 5 5 and 6 2

6 and 7 7 and 8 3


Wiring for Positive or Negative Battery Input

The MegaStar radio is shipped with the Fuse Panel wired for either a negative polarity or a positive polarity battery source. If it is desired to change the power source polarity from the default (factory) wiring (i.e., from positive to negative, or from negative to positive), do the following.

SD-110617 Fuse Panel

1. Disassemble and rewire the Fuse Panel as shown in Figures 3-8 and 3-9. After rewiring, reassemble the Fuse Panel by reversing the steps for disassembly.

For example, for positive (A) polarity (negative ground), the black wires of each fuse circuit are connected to “CKT” lugs. The colored wires connect to the “RET” lugs.

For negative (B) polarity (positive ground), the colored wires connect to the “CKT” lugs, while the black wires connect to the “RET” lugs.

If your radio is eqiupped with a -48V multiplexer, do not attempt this procedure.

MegaStar 155 M:N 63

• • • •••

64 C

• • • •••

Figure 3-8 MegaStar M:N Fuse Panel Wiring, Negative Polarity


Figure 3-9 MegaStar M:N Fuse Panel Wiring, Positive Polarity

MegaStar 155 M:N 65

• • • •••

66 C

• • • •••

Figure 3-10 Changing Polarities on the M:N Fuse Panel

3 Remove the 4 screws holding the panel to the shelf.

2 Disconnect all wiring from the connectors. Remove the wiring.

1 Open the panel door.

4On the Fuse Panel, remove the 6 screws that hold the panel to the housing.


1. For a negative polarity battery source, wire the battery leads as shown in Figure 3-11.

Figure 3-11 Negative Polarity Wiring

2. For a positive polarity battery source, wire the battery leads as shown in Figure 3-12.

Figure 3-12 Positive Polarity Wiring

Connect yellow lead

Connect yellow lead

Connect yellow lead

Connect yellow lead

MegaStar 155 M:N 67

• • • •••

68 C

• • • •••

Make a Delay Compensation Cable

Determine the Cable Length

1. Determine the difference in length between the main and diversity antenna waveguide feedlines.

Each feedline length is the distance between the connection point at the antenna and “top of rack” waveguide connection point on the equipment rack.

2. Calculate the difference in delay between the main and diversity feedlines by using one of the following formulas:

delay difference = | main - diversity |

delay difference (nanoseconds)

= length difference (feet) x 1.02 nS/foot x K

ordelay difference (nanoseconds)

= length difference (meters) x 3.34 nS/meter x K

where the value of “K” is obtained from Figure 3-13 on page 69.

This procedure is for radios equipped with IF Combiners.


Figure 3-13 Value of K vs. Frequency and Waveguide Type

3. Calculate the length of delay cable required to compensate for the delay difference calculated in step 2:

length (feet) = delay difference (nanoseconds) x 1 foot/1.02 nS x 0.67= delay difference (nanoseconds) x 0.66

orlength (meters)

= delay difference (nanoseconds) x 1 meter/3.34 nS x 0.67= delay difference (nanoseconds) x 0.2

1.15

1.20

1.25

1.30

1.35

1.40

1.45

1.50

1.55

1.60

1.65

4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5

11 11.5

12 12.5

13 13.5

Frequency (GHz)

K

EW77

EW63

EW52

EW90

EW64

EW127A

EW90

EW127

EW77

EW64

EW63

EW52

MegaStar 155 M:N 69

• • • •••

70 C

• • • •••

Prepare and Connect the Cable

The delay compensation cable (type RG-174) is stored on spools underneath the lower SPU shelf. If the spool is marked with option -050, it contains 50 feet of cable. If it is option -100, it contains 100 feet of cable.

1. Remove the wingnut from one of the cable spools and remove the spool.

2. Measure the length of delay cable that you will need and cut it.

3. Attach a female SMA connector to one end of the cable.

4. Attach a male SA connector to the other end of the cable.

5. Connect the delay cable to the IF input port of the IF Combiner associated with the relatively short antenna waveguide feedline. Typically, this will be the Diversity IF input.

In some cases, the Main IF input may be connected to the lower antenna thereby requiring that the delay cable be installed on the Main IF input.

6. Verify that the vol tage at the “ DELAY” testpoin t on the IF Combiner faceplate is 0 Volts +/- 500 mV.

7. Confirm that the “ EQM” vol tage test poin t on the Decoder card reads less than 60 mV.

8. Wrap the delay cable back onto the spool and secure it back in place on the rack with the wingnut.


Chapter 4

• • • • • • Verification

Introduction

When the MegaStar radio has been installed, you will need to check the following systems before putting the radio into service:

• Inventory the equipment using the MegaStar Inventory program

• Verify the RFU and SPU controller software issue numbers

• Test the Decoder cards

• Check the phase lock source crystal frequency for the Transmitter and Receiver

• Check the transmitter output power and ATPC status

• Verify the receive signal level

• Test the protection system

Some of these procedures involve the use of FarScan. Only the command numbers are given. If you need more detailed information, please refer to the FarScan for Windows Manual.

MegaStar 155 M:N 71

• • • •••

72 C

• • • •••

Tools and Equipment Required

The following items are required to verify the system.

• Jeweller’s screwdriver

• FarScan computer with:

• Current equipment database

• MegaStar Inventory software

• Various adapters and test cables (specified in each procedure)

Specifications for the following units are described on page 29.

• Digital multimeter

• Power meter

• Frequency counter

Procedures

Inventory Equipment

Equipment Required:

• FarScan computer

1. Make sure the computer is connected to the radio.

2. Start and set up the MegaStar Inventory program.

3. Select the target site (under “Equipment Address”).

4. Select “All” in the list of equipment to inventory the entire RFU or SPU shelf.

This procedure is given in detail in Chapter 4 of the MegaStar Software Utilities Manual.

hapter 4 Verification

Equipment selections are also available from the menu bar under “Inventory.”

Verify RFU and SPU Controller Software Version

Equipment Required:


1. To verify that the correct version of software is loaded in the RFU and SPU controllers, send FarScan command 010, alter.

Select SPU, RFU1 and RFU2 as appropriate.

Test the Decoder Card

Equipment Required:

• Digital multimeter (page 29)

1. Connect the common lead of the digital multimeter (DMM) to the ground test point (GND) on the Alarm Display Unit.

2. Connect the second DMM lead to the “EQM MON” test point on the card. The voltage should be <100mV.

A higher reading indicates a degraded signal. This may be caused by a problem with antenna alignment, far-end transmit power or frequency, or a near-end receiver problem.

3. Repeat steps 1 and 2 for the remaining Decoder(s).

Each installed unit must respond. Failure to respond should be interpreted as a potential failure. Repeat the inventory, targeting units that don’t respond as expected.

Refer to the OMSA1 report which is in the Sales Order Specific binder that accompanies this instruction manual for software version information.

MegaStar 155 M:N 73

• • • •••

74 C

• • • •••

Test the Phase Lock Source

Tools and Equipment Required:

• Jeweller’s screwdriver

• Frequency counter (page 29)

1. Locate the phase lock source (PLS) on the Transmitter or Receiver plate assembly.

2. Connect the frequency counter to the RF MON port (SMA connector J2) of the PLS.

3. Verify that the crystal frequency is the same as displayed on the label, ±300 Hz (0.0003% or 3 ppm).

4. If the frequency is out of range, use the jeweller’s screwdriver to carefully adjust the tuning screw until the frequency counter displays the correct frequency, ±30 Hz.

5. Repeat the previous steps for all equipped Transmit and Receive phase lock sources on the radio assembly.

Check the Transmitter Output Power



• Power meter and medium power head (page 29)

1. Verify that the power switch on the Power Amplifier (PA) is turned on.

The PLS is shock mounted to reduce sensitivity to mechanically-induced changes in output frequency. However, any adjustments should be made while the radio is offline.


2. Use FarScan to check the output power (dBm). Record the value. Send the following manual commands:

Radio 1 Tx Level (command 164, inquiry)Radio 2 Tx Level (command 166, inquiry)

You should receive a two-line response indicating that each unit is responding correctly. Some correct responses are shown below:

164 Radio 1 Tx Level<<Response...Total of 2>>

1. Radio2. Tx A1 Level +30.5 dBm*

166 Radio 2 Tx Level<<Response...Total of 2>> 1. Radio

2. Tx A1 Level +30.5 dBm*

*Calculated value at top of rack.

3. Connect the medium power head to the calibrated monitor point on the ACU. (The monitor point is labeled “Coupling loss from antenna flange.”)

4. Add the output power number to the coupling loss number (shown on the monitor point label) to get the power at the top of the rack.

Example:

RF Monitor Value + Coupling Loss = Top of Rack Power

-3 dBm + 30 dBm = 27 dBm

When set to “low,” the Automatic Transmit Power Control (ATPC) will reduce RF output power by 10 dB (from its nominal setting). Unless you are licensed for ATPC, you should set the radio for “ATPC INHIBITED” and “PA HIGH POWER ON” to obtain the correct PA output power.

MegaStar 155 M:N 75

• • • •••

76 C

• • • •••

5. If you need to change the PA output power setting, use FarScan to alter the radio ATPC status (command 550, alter).

6. Repeat step 1 through step 5 for the remaining PA(s).

Verify the Receive Signal Level



1. Use FarScan to verify that the RSL is correct. Send commands 174 and 176 (see example below).

You should receive a two-line response indicating that each unit is responding correctly. Some correct responses are shown below:

174 Radio 1 Rx AGC Monitor<<Response...Total of 2>> 1. Radio

2. Rx A1 Level -46.8 dBm

176 Radio 2 Rx AGC Monitor<<Response...Total of 2>> 1. Radio

2. Rx A2 Level -43.8 dBm

Consult the path performance calculation provided for your system to get nominal RSL. The correct RSL would be the nominal RSL from the path performance calculation sheet, +/-2 dB.

The accuracy of FarScan is ±4dB.


Chapter 5

• • • • • • Operation

Introduction

System Operation

System operation involves the following functions:

• Monitoring the MegaStar radio’s performance

• Managing the radio’s operation

• Supervising the telecommunications network

• Configuring traffic

These functions are carried out using FarScan software.

FarScan Operation

This manual contains the basic information needed for using FarScan to operate and monitor a MegaStar radio. For more detailed instructions on how to use FarScan, please refer to the FarScan for Windows Manual or online help.

In this manual, the word “Return” indicates the key marked “Return” or “Enter” on your keyboard.

MegaStar 155 M:N 77

• • • •••

78 C

• • • •••

and cuted kets [i]

Scan

The tables on the following pages give FarScan’s MegaStar manualcommands, which are listed by function, command number and commname. Status or command items that appear when a command is exeare given below the command name in the tables. The letters in bracnext to each item indicate whether they are alterable [a] or for inquiryonly.

Third-Party Multiplexer

The commands that control the multiplexer are described in the documents provided by the equipment manufacturer.

FarScan Manual Commands

For more details on how to operate FarScan, please refer to the Farmanual.

Refer to the FarScan manual and glossary (located on the MegaStar CD) for a more detailed list of FarScan commands and their functions.

Some FarScan manual commands may affect traffic. Read all messages that appear when a command is executed.

hapter 5 Operation

Protection Switching

Tests and Loopbacks

Function No. Command

Radio Transmitter StatusActive or Offline

134 Radio 1 Tx Switch Status[i] Radio 1 Tx Active[i] Radio 1 Tx Offline

135 Radio 2 Tx Switch Status[i] Radio 2 Tx Active[i] Radio 2 Tx Offline

941 Radio 1 Tx Switch Status/Control a

[i] Radio 1 Tx Active[i] Radio 1 Tx Offline

a. This is an AutoPoll command only.

942 Radio 2 Tx Switch Status/Control a

[i] Radio 2 Tx Active[i] Radio 2 Tx Offline

1:N System and Channel Affecting Commands

560 1:N PROT Switching Commands

562 Undo Manual Switching Command


Tributary 1 Status/Command 525 [a] Disable Loopback[a] Enable Loopback

Tributary 2 Status/Command 526 [a] Disable Loopback[a] Enable Loopback

MegaStar 155 M:N 79

• • • •••

80 C

• • • •••

Monitor Signal Levels

Initialize System


Radio Rx 1 Level 174 Radio 1 Rx AGC Monitor[i] Rx 1 Level -##.# dBma

a. This value is calculated at the top of the rack.

Radio Rx 2 Level 176 Radio 2 Rx AGC Monitor[i] Rx 1 Level -##.# dBma


Display Equipment Address (of directly connected site only)

008 Display Equipment Address

Set Equipment Address 908 Set Equipment Address

Set SCAN Bridge Connection 919 Set All DVB Ports

Set Orderwire Address 257 VF Orderwire 1 Status/Command

258 VF Orderwire 2 Status/Command

Set External Alarm and Control 004 External Alarm & Control[a] Set External Out 1 Open[a] Set External Out 1 Closed[a] Set External Out 2 Open[a] Set External Out 2 Closed[a] Set External Out 3 Open[a] Set External Out 3 Closed

Set E1/E2 Orderwire On/Off HookSet A or B Mute Disable or Enable

253 OVERHEAD Status/Command[a] A E1/E2 Mute Disable/Enable[a] B E1/E2 Mute Disable/Enable[a] E1 Handset Not Muted[a] E1 Handset Muted[a] E2 Handset Not Muted[a] E2 Handset Muted

hapter 5 Operation

Check System Status

ATPC StatusEnable ATPCSet PA Low PowerSet PA High PowerInhibit ATPC, Set PA Low PowerInhibit ATPC, Set PA High Power

550 Radio ATPC Status/Command

Set Channel Priority and Set Value of N in 1:N System

568 1:N CH Priority Status/Command

Verify Port Connection in 1:N Sys-tem

910 Port Connection Status

In a ring configuration, the orderwire is manually muted on the A or B side to prevent singing or ringing. If a two-way failure occurs on one of the hops, the A or B side mute can be disabled to allow orderwire operation in both ends of the failed hop.


Global StatusMinorMajorMuxModemRadio

001 Global Status

Alarm DisplayACO Switch Enabled/Disabled

004 [i] ACO Switch Up or Down

Power Supply 1 231 Power Supply 1 Status[i] Power Supply 1 Normal[i] Power Supply 1 Summary Alarm

Power Supply 2 232 Power Supply 2 Status[i] Power Supply 2 Normal[i] Power Supply 2 Summary Alarm

SPU Controller 905 SPU Controller Status


MegaStar 155 M:N 81

• • • •••

82 C

• • • •••

Overhead Processor 253 Overhead Status/Command[i] Overhead PROC Fuse Normal or Alarm

VF Orderwire 1 257 VF Orderwire 1 Status/Command

VF Orderwire 2 258 VF Orderwire 2 Status/Command

Data Orderwire 259 Data Orderwire Status

Modulator 1IS3 1 InputIS3 2 InputIS3 SelectedOutput

114 Modulator 1 Status[i] Modulator 1 IS3 1 Input Normal or Alarm[i] Modulator 1 IS3 2 Input Normal or Alarm[i] Modulator 1 IS3 1 or 2 Selected[i] Modulator 1 Output Normal or Alarm

Modulator 2IS3 1 InputIS3 2 InputIS3 1 SelectedOutput

115 Modulator 2 Status[i] Modulator 2 IS3 1 Input Normal or Alarm[i] Modulator 2 IS3 2 Input Normal or Alarm[i] Modulator 2 IS3 1 or 2 Selected[i] Modulator 2 Output Normal or Alarm

Decoder 1InputFECLock

112 Decoder 1 Status[i] Decoder 1 Input Normal or Alarm[i] Decoder 1 FEC Normal or Alarm[i] Decoder 1 Lock Normal or Alarm

Decoder 2InputFECLock

113 Decoder 2 Status[i] Decoder 2 Input Normal or Alarm[i] Decoder 2 FEC Normal or Alarm[i] Decoder 2 Lock Normal or Alarm

Demodulator 1Slope Stress

116 Demodulator 1 Status[i] Demod 1 Slope Stress Normal or Alarm[i] IF Input Normal[i] IF Input Alarm

Demodulator 2Slope Stress

117 Demodulator 2 Status[i] Demod 2 Slope Stress Normal or Alarm[i] IF Input Normal[i] IF Input Alarm

Switch InterfaceTx & Rx Status ActivityInput from DemodHS1, HS2 Switch Position

118 [i] Switch Interface Status


hapter 5 Operation

Radio 1 Tx PLS Lock NormalRadio 2 Tx PLS Lock Alarm

132133

Radio 1 Tx PLS StatusRadio 2 Tx PLS Status

Power Amplifier 1Power Amplifier 2

130131

Radio 1 CTRL PA StatusRadio 2 CTRL PA Status

IF Filter Amplifier 1IF Filter Amplifier 2

136137

Radio 1 IF AMP StatusRadio 2 IF AMP Status

Radio 1 Rx PLS Lock NormalRadio 2 Rx PLS Lock Alarm

140141

Radio 1 Rx PLS StatusRadio 2 Rx PLS Status

LNC 1LNC 2

138139

Radio 1 LNC StatusRadio 2 LNC Status

1:N Status Commands 150 SYS Protection Status

151 Protection Channel Status

160 Channel Traffic Status


MegaStar 155 M:N 83

• • • •••

84 C

• • • •••

hapter 5 Operation

Chapter 6

• • • • • • Routine Maintenance

Introduction

Periodic Checks

The radio should be checked periodically for proper performance. Routinely check the Alarm Display LEDs (on the right side of each SPU shelf) for red fault lights. Also, check the history files available from FarScan.

Inventory and Maintenance

The MegaStar Inventory Program can be used to take an equipment inventory of the RFU and SPU units. After any unit is replaced, re-run the inventory program. (Refer to the MegaStar Software Utilities manual for more details.)

By exercising the Inventory program you verify that the MegaStar controllers can communicate with the replacement module and get a secondary indication that stored performance parameters have been accessed.

MegaStar 155 M:N 85

• • • •••

86 C

• • • •••

Maintenance Records

Recording Information

There are two measurements that the FCC requires you to make once per year after the radio is installed:

• Phase Locked Source (PLS) frequency (see page 74)

• Output power (see page 74)

These measurements, when compared with those made during initial testing at the factory (refer to the factory test data sheets), will indicate any degradation in system performance.

Record the results of these measurements on the Routine Maintenance Log Form, located in the “Forms” section of this manual.

1. Enter the date that the initial measurements are taken in the space provided.

2. Enter the sales order number for the rack in which the radio is mounted in the ‘Rack #’ space.

3. Enter the assigned radio site number in the ‘Radio Site #’ space.

4. Enter the radio’s location (or site name) in the ‘Location’ space.

5. Enter the name of the coordinating site (far-end radio) in the ‘Coordinating Site’ space.

The Routine Maintenance Log Form is designed for use in a 5-to 7-year period. Make additional copies of the form included in this manual, or request them from Harris.

hapter 6 Routine Maintenance

Measurements

Column Entry

What to Measure Routine measurements obtained each year.

Where to Measure Access point in the assembly where the measurement should be made.

Initial Level Initial alignment measurements.

Year After Installation Routine measurements made at yearly intervals. One year after installation, enter measurements in the “1st” column, and so on.

Notes Any action taken following a failed measurement or com-ments about a measurement or test. For example, you might note that a measurement fell below the required stan-dard and you replaced the out-of-spec unit.

The Routine Maintenance Log Form lists the routine measurements for non-protected and hot standby terminals and repeaters. Fill out only the required routine measurements for your configuration.

MegaStar 155 M:N 87

• • • •••

88 C

• • • •••

Switch Settings

It is recommended that you also indicate SPU Controller switch settings on the Routine Maintenance Log Form. Each time the equipment configuration changes, indicate the switch settings. Refer to switch setting information starting on page 31 for more details.

hapter 6 Routine Maintenance

ing re .

s this,

Chapter 7

• • • • • • Troubleshooting

Introduction

This section covers troubleshooting procedures for MegaStar’s subassemblies.

You can usually locate the source of a problem in the radio by checkfor a continuously lit fault LED on one or more of the plug-in units. Themay also be a fault indication in the status report issued by FarScan

If no fault LEDs are lit, and no fault is indicated in the FarScan statureport, locate the problem through the process of elimination. To do you will need a spares kit for your radio, available from Harris.

Only use the elimination method when all other possible sources of trouble have been eliminated.

Remember to reinstall the original unit if the spare does not clear the problem.

MegaStar 155 M:N 89

• • • •••

90 C

• • • •••

es,

Visual Alarm Indications

The Alarm Display card provides a visual indication of summary alarms with equipment covers installed. It also provides site controls and alarms, as well as FarScan connectivity.

Turning off the Audible Alarm

If your system is configured to provide an audible tone when the system is in alarm, press the alarm cutoff (ACO) switch, located on each Alarm Display card to quiet it. The audible signal will reactivate when a new and different alarm condition is detected.

FarScan

FarScan, available from Harris on a desktop or laptop PC, is a convenient network supervision system that serves as an alarm and control master for the MegaStar radio.

Extensive diagnostic capabilities are provided through FarScan’s convenient menu-driven procedures.

To obtain the full benefits of FarScan’s network monitoring capabilitiyou must set it up to provide continuous polling. Refer to the FarScan instruction manual for more information on how to use the program.

If the fault LED is lit on a unit, use FarScan to interrogate the equipment and determine the nature of the alarm.

hapter 7 Troubleshooting

MegaStar Inventory Program

The MegaStar Inventory program may be used to locate a unit(s) that are not communicating over the radio internal channel. Failure to communicate will cause alarm reporting errors.

Adjustments and Tuning

Use a frequency counter to determine whether any frequency adjustments need to be made (see page 74). If a major adjustment appears necessary, check the measuring technique and test equipment settings for accuracy.

Replacing Faulty Units

To replace a faulty unit, refer to Chapter 8, “Repair and Replacement.”

MegaStar 155 M:N 91

• • • •••

92 C

• • • •••

Equipment Required

Software

• FarScan

• MegaStar Inventory Program

Test Equipment

The following test equipment may be needed for measurements and adjustments that cannot be made using FarScan. (For detailed equipment specifications, refer to page 29.)

• Digital Multimeter

• Power Meter

• Frequency Counter

Alignment Equipment

The MegaStar Radio Alignment Kit is needed when changing crystals in the phase lock source. It is available from Harris.

Allow the frequency counter to warm up for 30 minutes before making any measurements.


SPU Troubleshooting

Trouble in the SPU is indicated by the presence of a lighted minor, major or critical LED on the Alarm Display unit. Remove the SPU front cover to determine which card is at fault (its fault LED will be lit as well).

Troubleshooting consists of isolating the failed unit or units with a lighted fault LED and replacing them with spares. If replacing the faulty unit solves the problem, return the failed unit to the factory for repair.

If a lighted fault LED is not visible, check the FarScan status report for any error messages. If no problems are indicated, isolate the problem card by replacing each card with a spare until the faulty one is located. Such troubleshooting by replacement should not begin until all other possible trouble sources are eliminated.

The following chart describes the procedure for troubleshooting the SPU shelf.

If there is a problem with the Alarm Display unit, its fault LED will be illuminated.

Always reinstall the original unit if the spare does not clear the fault.

Alarm Indication Probable Cause and Corrective Action

Fault LED is lit continuously on any unit.

Use FarScan to determine what is causing the alarm.

Fault LED flashes on and off once per second.

The input alarm circuit has detected a signal loss at its input. Restore the missing signal by replacing a removed card or fiber optic cable.

MegaStar 155 M:N 93

• • • •••

94 C

• • • •••

RFU Troubleshooting

Trouble in the RFU is indicated by the presence of a lighted fault LED on one or more units. Troubleshooting consists of isolating the failed unit(s) through the fault LEDs, through the FarScan status report, or by tracing the signal flow through the assembly and ascertaining the correct performance of each unit in the assembly. The failed unit(s) should then be returned to the factory for repair.

When symptoms permit unambiguous fault isolation, the fault LED on the failed unit will illuminate steadily. Fault LEDs on other units may flash on and off, indicating a problem with the input signal.

If no fault LEDs are lit, or if the unit does not have one, replace each unit with a spare until the faulty one is located. Troubleshooting by replacement should not begin until all other possible trouble sources are eliminated.

The following chart describes the RFU troubleshooting procedure.

Always reinstall the original unit if the spare does not clear the fault.

Alarm Indication Probable Cause and Corrective Action

Fault LED is lit on any unit Use FarScan to determine what is causing the alarm.

Fault LED flashes on and off once per second.

The input alarm circuit has detected a signal loss at its input. Restore the missing signal by replacing a removed card or RF/IF cable.


Chapter 8

• • • • • • Repair and Replacement

Introduction

This section covers repair and replacement procedures for the MegaStar SPU and RFU subassemblies.

When you have located a failed unit, refer to the correct procedure on one of the following pages to replace it.

Ground yourself properly using an antistatic wrist strap or other grounding device before handling the sensitive units.

Do not touch the edge connectors with your fingers.

Return any defective unit in an anti-static bag.

MegaStar 155 M:N 95

• • • •••

96 C

• • • •••

In-Service Replacement

If the unit being replaced is nonredundant and common to normal and protection paths, first transfer the affected traffic to alternate channels.

Any function that causes a break in the RF signal, such as removing the Modulator card or Power Amplifier RF IN cable, may cause errors in the corresponding local receiver if it is online.

hapter 8 Repair and Replacement

Replacing Units

If you need to replace a failed unit with a spare, be absolutely sure that they are identical by checking the part numbers on each unit. Also, make sure that switches, straps, and/or headers on the replacement unit match those of the old unit.

For detailed information on Harris’s part numbering scheme, refer to page 157.

Returning Failed Equipment

Failed units should be returned to Harris for repair. Refer to page 161 for instructions on proper material return procedures.

Failure to comply with our material return procedure can delay the repair process.

MegaStar 155 M:N 97

• • • •••

98 C

• • • •••

Signal Processing Units

Voice Frequency Orderwire

LOCATION ON SPU SHELF

or

1 2 3 4 5 6 7 8 9 1011 121314 1516 1718

FAULT LED

TELEPHONE PORT

4W PORTS CONNECTOR

EXTRACTOR

hapter 8 Repair and Replacement

Tools Required

• Small slotted screwdriver

Remove the VF Orderwire

1. Disconnect the telephone handset cable from the card.

2. Remove the cable from the 4W PORTS connector. Use the screwdriver to loosen the two connecting screws.

3. Disengage the card extractor.

4. Carefully pull out the card and set it aside.

Install the New VF Orderwire

1. Compare the part number of the card you removed to the one you are replacing it with to be sure they are identical.

2. Reverse the removal procedure to install the new card.

MegaStar 155 M:N 99

• • • •••

100

• • • •••

Data OrderwireLOCATION ON SPU SHELF

or

1 2 3 4 5 6 7 8 9 1011 121314 15 161718

FAULT LED

RS 232 CONNECTOR

EXTRACTOR

Chapter 8 Repair and Replacement

Tools Required


Remove the Data Orderwire

1. Disconnect the cable from the RS 232 port. Use the screwdriver to loosen the two connecting screws.



Install the New Data Orderwire



MegaStar 155 M:N 101

• • • •••

102

• • • •••

Overhead ProcessorLOCATION ON SPU SHELF

1 2 3 4 5 6 7 8 9 1011 121314 15 161718

EXTRACTOR

MUTE MAIN ACTIVE LED

MUTE C ACTIVE LED

FAULT LED


Remove the Overhead Processor



Install the New Overhead Processor




• • • •••

104

• • • •••

Power Supply


1 2 3 4 5 6 7 8 9 1011 121314 151617 18TEST POINTS

FUSE

POWER SWITCH

POWER CONNECTOR

EXTRACTOR

FAULT LED

ACTIVE LED

EXTRACTOR


Remove the Power Supply

1. If equipped, disengage the half-height cards (Data Orderwire, VF Orderwire and Overhead Processor) from the backplane connectors on the SPU shelf.

2. Turn off the power switch on the Power Supply.

3. Remove the Power Supply fuse from the Fuse Panel.

4. Disconnect the 2-pin power cable.

5. Disengage the upper and lower card extractors.


Install the New Power Supply


If the fault LED on the Power Supply (DC-DC Converter) is lit, first check the Power Supply fuse in the Fuse Panel. If it has blown, replace it with a new one of the correct value for the power supply voltage. If the fuse blows again, replace the power supply.


• • • •••

106

• • • •••

DemodulatorLOCATION ON SPU SHELF

1 2 3 4 5 6 7 8 9 1011 121314 15 161718

EXTRACTOR

FAULT LED

ACTIVE LED

IF IN CONNECTOR

EXTRACTOR


Tools Required

• SMA wrench (5/16”)

• Torque wrench (8-9 inch-lbs)

Remove the Demodulator

1. Remove the IF IN cable using an SMA wrench to loosen the nut.



Install the New Demodulator



3. Use the torque wrench to secure the IF IN SMA connector.


• • • •••

108

• • • •••

DecoderLOCATION ON SPU SHELF

FAULT LED

EXTRACTOR

EQM MON PORT

ACTIVE LED

1 2 3 4 5 6 7 8 9 1011 121314 15 161718

EXTRACTOR


Remove the Decoder

1. Move traffic to a protection channel.

2. If equipped, disengage the half-height cards (Data Orderwire, VF Orderwire and Overhead Processor) from the backplane connectors on the SPU shelf.



Install the New Decoder




• • • •••

110

• • • •••

ModulatorLOCATION ON SPU SHELF

1 2 3 4 5 6 7 8 9 1011 121314 15 161718

EXTRACTOR

FAULT LED

EXTRACTOR

IF OUT CONNECTOR

ACTIVE LED


Tools Required

• SMA wrench (5/16")


Remove the Modulator


2. Use the SMA wrench to loosen the nut fastening the IF OUT cable and remove the cable.



Install the New Modulator



3. Use the torque wrench to secure the IF IN SMA connector.

Removing the Modulator will cause errors in the corresponding local receiver.


• • • •••

112

• • • •••

IF Combiner (if equipped)LOCATION ON SPU SHELF

1 2 3 4 5 6 7 8 9 1011 121314 15 161718

EXTRACTOR

FAULT LED

EXTRACTOR

IF OUT CONNECTOR

DIVERSITY ACTIVE LED

MAIN ACTIVE LED

DELAY TEST POINT

DIVERSITY IF IN

MAIN IF IN CONNECTOR


Tools Required



Remove the IF Combiner


2. Use the SMA wrench to loosen the DIV IF IN cable and disconnect it.

3. Use the SMA wrench to loosen the IF OUT cable and disconnect it.

4. Use the SMA wrench to loosen the main IF IN cable and disconnect it.



Install the New IF Combiner



3. Use the torque wrench (8-9 inch-lbs) to fasten the cables.


• • • •••

114

• • • •••

Switch Interface

EXTRACTOR

FAULT LED

EXTRACTOR

SP1 CONNECTOR

ACTIVE LED

SP2 CONNECTOR

HS1 CONNECTOR

HS2 CONNECTOR


1 2 3 4 5 6 7 8 9 1011 121314 15 161718


Remove the Switch Interface


2. Disconnect all cables from the unit’s front panel connectors.



Install the New Switch Interface



3. Tighten the connector screws.


• • • •••

116

• • • •••

3xDS3 Tributary Interface LOCATION ON SPU SHELF

1 2 3 4 5 6 7 8 9 1011 121314 15161718

FAULT LED

EXTRACTOR

DS1 WaysideOUT and IN

DS3 Inputsand Outputs

TX LED

RX LED

EXTRACTOR


Remove the 3xDS3 Tributary Interface

1. Disconnect all cables from the unit’s front panel connectors.



Install the New 3xDS3 Tributary Interface



Before you begin this procedure, label the cables before you disconnect them to facilitate replacement.


• • • •••

118

• • • •••

Tributary InterfaceLOCATION ON SPU SHELF

1 2 3 4 5 6 7 8 9 1011 121314 15161718

EXTRACTOR

FAULT LED

ACTIVE LED


Remove the Tributary Interface

1. Disconnect each connector.



Install the New Tributary Interface

1. Compare the part number and option of the card you removed to the one you are replacing it with to be sure it is an equivalent or later model.


If you are disconnecting optical cables, hold the connector so that it points away from your face. Do not look at the optical connectors to avoid laser injury to your eyes.


• • • •••

120

• • • •••

SPU Controller


1 2 3 4 5 6 7 8 9 1011 121314 15161718

EXTRACTOR

FAULT LED

LEARN BUTTON

RFU 1

EXTRACTOR

RFU 2

PARALLEL

AUX

SPUR

CIT

MEGASCAN


Tools Required


• Small Phillips screwdriver

Remove the SPU Controller

1. Remove the cables connected to the Controller. (Make a note of how each cable is labeled for correct reinstallation.)




• • • •••

122

• • • •••

Install the New SPU Controller


2. Compare the switch settings and straps to make sure they are identical. (Refer to page 31.)

3. Connect the RFU cables to the controller.

4. Plug the card into its slot and engage the card extractors.

5. Connect any remaining cables to the SPU Controller.

6. Verify that the correct version of SPU software is loaded. Refer to page 73 for details.)

7. Verify the local address. Send FarScan Command 008. Change it if necessary.

8. Verify the SPU Runtime Code using FarScan Command 10, Alter.

If the Runtime Code is not the same as what was installed in the previous SPU Controller, perform the SPU download procedure, describe in the MegaStar Software Utilities Manual.


Reprogram the VF Orderwire Address

You will need to reprogram the address for the VF Orderwire card (page 37) when the SPU Controller is replaced. The following steps are carried out using FarScan. Refer to the FarScan instruction manual if necessary.

1. Start FarScan and turn the system connection online.

2. Make sure the correct target site is selected.

3. From the FarScan Manual Commands menu, select command 257 (for VF Orderwire in slot 1) or command 258 (for VF Orderwire in slot 2). Type a to alter the command.

4. Highlight the first digit of the address and press the End key.

5. Highlight the last two digits of the address and press End. The “change address” command will be sent and the address will be changed.


• • • •••

124

• • • •••

Alarm Display

SYSTEM STATUS LIGHTS

EXTRACTOR

EXTRACTOR

ALARM CUTOFF SWITCH

AGC TEST POINTS


1 2 3 4 5 6 7 8 9 1011 121314 15161718

FAULT LED

FARSCAN INTERFACE(25-PIN FEMALE)

CUSTOMER INTERFACE(44-PIN FEMALE)


Tools Required


• Small Phillips screwdriver

Remove the Alarm Display

1. Detach any connecting cables from the card.



Install the New Alarm Display




• • • •••

126

• • • •••

Radio Frequency Units

Power Amplifier

RF OUT

RF IN

POWER SWITCH

FAULT LED

ACTIVE LED

POWER CONNECTOR


Tools Required

• SMA wrench (5/16")• Torque wrench (8-9 inch-lbs)

Remove the Power Amplifier1. Move traffic to a protection channel.

2. If ATPC is enabled, lock ATPC to low power at the far-end site. If the radio is not locked to low power, the far-end transmitter will automatically be set to high power.

3. Turn off the power switch on the faulty Power Amplifier.

4. Remove the associated fuse at the Fuse Panel (to prevent arcing).

5. Disconnect the 4-pin power cable from the Power Amplifier.

6. Use the SMA wrench to remove the cables connected to the RF IN and RF OUT jacks on the Power Amplifier.

7. Loosen the two knurled thumbscrews on the locking bar at the front of the shelf. Slide the locking bar over so that you can pull out the unit.

8. Use the handle to pull the Power Amplifier from the IF/RF shelf.

Install the New Power Amplifier1. Compare the part number on the unit you removed to the one you are

replacing it with to be sure they are identical.

2. Install the new Power Amplifier by reversing the removal procedure.

3. Use the torque wrench (8-9 inch-lbs) to tighten the SMA cable connections.

4. Restore traffic from the protection channel.

5. Verify that the correct version of RFU software is loaded. (Refer to page 73 for details).

6. Check the operation of the new Power Amplifier assembly by performing the verification procedure given in Chapter 4.

Removing the Power Amplifier will drop traffic in both directions because its power supply also provides power for the receiver.

If a later model unit is supplied, make sure it has the same six-digit base number and option as the one it is replacing.


• • • •••

128

• • • •••

Receiver

LOW NOISE CONVERTER (LNC)

PHASE LOCK SOURCE (PLS)

IF AMPLIFIER

RF IN CONNECTOR

LNC FAULT LED

RECEIVER ACTIVE LED

PLS FAULT LED

CRYSTAL ADJUSTMENT

CRYSTAL MONITOR

IF AMP FAULT LED

IF OUT CONNECTOR


• •

Tools Required


Remove the Receiver


2. Locate the Power Amplifier that supplies power to the Receiver you will remove.

3. Turn off the power switch on the Power Amplifier.4. Disconnect the RF IN cable from the LNC (top of the assembly) and

rotate it out of the way.

5. Disconnect the cable from the IF OUT connector on the IF Amplifier (bottom of the assembly).

6. Loosen the thumb screws on the horizontal locking bar and slide it to the left.

7. Carefully pull the Receiver assembly out of the radio.8. Make any modifications necessary according to the following

instructions:LNC - page 135IF Amplifier - page 137PLS - page 138

Install the Receiver1. Plug the Receiver into the radio.2. Connect the cable to the IF OUT connector on the IF Amplifier (bottom

of the assembly).

3. Connect the RF IN cable to the LNC (top of the assembly).

4. Use the torque wrench to tighten the nuts on the RF and IF cables.5. Slide the locking bar to the right and tighten the two thumb screws.

6. Turn on the power switch on the Power Amplifier.

7. Restore traffic from the protection channel. 8. Check the operation of the new unit by performing the verification

procedure given in Chapter 4.

Complete reciever assemblies are not supplied as spares. Refer to the instructions later in this chapter for replacing individual components.

MegaStar 155 M:N 129 • •••

130

• • • •••

Transmitter

Tools Required


RF OUT PORT

IF IN PORT

ACTIVE LED

TRANSMITTER FAULT LED

CRYSTAL ADJUSTMENT

CRYSTAL MONITOR

UP CONVERTER

PHASE LOCK SOURCE (PLS)


Remove the Transmitter


2. Locate the Power Amplifier that supplies power to the Transmitter you will remove.

3. Turn off the power switch on the Power Amplifier.

4. Disconnect the cable from the RF port on the upconverter.

5. Disconnect the other end of the cable from the RF IN port on the Filter/Switch assembly. Set the cable aside.

6. Disconnect the cable from the IF port on the upconverter and move it aside.

7. Loosen the two thumb screws on the locking bar and slide it to the left.

8. Use the handle to pull the transmitter from the radio. Make sure it doesn’t catch on other cables.

9. Carefully pull the Transmitter assembly from the shelf.

10. If you need to replace the PLS, go to page 138.

Install the Transmitter1. Plug the transmitter in the radio.

2. Connect one end of the RF cable to the RF IN port on the Filter/Switch assembly.

3. Connect the other end of the cable to the RF port on the upconverter.

4. Connect the cable to the IF port on the upconverter.

5. Slide the locking bar to the right and tighten the two thumb screws.

6. Turn on the power switch on the Power Amplifier.

7. Restore traffic from the protection channel.

8. Check the operation of the new unit by performing the verification procedure given in Chapter 4 .

Complete transmitter assemblies are not supplied as spares. Refer to the instructions later in this chapter for replacing individual components.


• • • •••

132

• • • •••

Filter/Switch Assembly

The Filter/Switch Assembly is not sold as a spare unit.

RF OUT 1

RF IN 1

RF IN 2

RFU 1 (FARSCAN)

RFU 2 (FARSCAN)

RF OUT 2


Tools Required



Remove the Filter/Switch Assembly


2. Turn off the power switch on both PAs.

3. Disconnect the cable from the RF OUT 1 port on the Filter/Switch assembly and move it aside.

4. Disconnect the cable from the RF OUT 2 port. Swing the cable out of the way.

5. Disconnect the cable(s) from the RF ports on the transmitter upconverter(s).

6. Disconnect the other end from the RF IN port(s). Set the cable(s) aside.

7. Disconnect the RFU 1 and RFU 2 cables.

8. Carefully pull the Transmit Filter/Switch assembly from the shelf.

Traffic will be dropped during this procedure when the filter/switch assembly is removed.


• • • •••

134

• • • •••

Install the Filter/Switch Assembly

1. Compare the part number on the unit you removed to the one you are replacing it with to be sure they are identical.

2. If necessary, program the unit using the RF Alignment Kit. If the IDEPROM is not programmed correctly (frequency, branching gain), errors will appear in the presented AGC levels. The RF Alignment Fixture Kit (p/n 098-110451-001) is available from Harris.

3. Slide the replacement Filter/Switch assembly into place in the rack.

4. Reverse the removal procedure.

5. Check the operation of the new unit by performing the verification procedure given in Chapter 4.

If a later model unit is supplied, make sure the unit has the same six-digit base number and option as the one it is replacing.


Low Noise Converter

Tools Required

• Allen wrench (3/32")


• SMA torque wrench

Remove the Low Noise Converter

1. Remove the Receiver from the radio according to the instructions on page 128.

2. Lay the Receiver component-side-up on a flat, static-free work area.

3. Detach the ribbon cable from the LNC connector on the Distribution Card. (Remove the cable using its connector; do not pull on the cable to remove it.)

4. Use the SMA wrench to carefully remove the cables connected to the “LO IN” and “IF OUT” connectors.

5. Use the Allen wrench to loosen the four screws at each corner of the LNC.

6. Remove the LNC and set it aside to return to Harris.

Install the New Low Noise Converter


2. Put the new LNC on the Receiver plate. Use the Allen wrench to tighten the four screws at each corner.

3. Reconnect the “IF OUT” cable to the LNC. (It is the black, flexible cable.) Use the SMA torque wrench to gently tighten the connection.

4. Reconnect the rigid “LO IN” cable to the LNC. Use the SMA torque wrench to gently tighten the connection.


• • • •••

136

• • • •••

5. Plug the ribbon cable into the LNC connector on the Distribution Card. Make sure pin 1 of the ribbon cable (red stripe) is aligned with pin 1 of the connector.

6. Replace the Receiver assembly in the radio and reconnect the cables according to the instructions on page 128.


IF Filter/Amplifier

Tools Required

• Allen wrench (3/32")

• SMA wrench (5/16”)


Remove the IF Filter/Amplifier

1. Remove the Receiver from the radio according to the instructions on page 129.

2. Lay the Receiver component-side-up on a flat, static-free work area.

3. Disconnect the ribbon cable from the IF Filter/Amp connector on the Distribution Card.

4. Disconnect the SMA cable from the IF Filter/Amplifier input.

5. Use the allen wrench to loosen the four screws, one at each corner of the IF Filter/Amplifier.

6. Remove the IF Filter/Amplifier and set it aside to return to Harris Farinon.

Install the IF Filter/Amplifier


2. Place the new IF Filter/Amplifier on the Receiver Assembly plate.

3. With the Allen wrench, gently tighten the four screws at the corners of the IF Filter/Amplifier.

4. Connect the SMA cable to the IF Filter/Amplifier input.

5. Plug the ribbon cable into the IF Filter/Amp connector on the Distribution Card. Make sure pin 1 of the ribbon (red stripe) is aligned with pin 1 of the card’s connector.

6. Replace the Receiver assembly in the radio and reconnect the cables according to the instructions on page 129.


• • • •••

138

• • • •••

Phase Lock Source

Tools Required

• Phillips screwdriver



Remove the Phase Lock Source

1. Remove the Receiver (refer to page 129) or Transmitter (refer to page 131) from the radio.

2. Lay the assembly component-side-up on a flat, static-free work area.

3. Detach the ribbon cable from the PLS connector (P2) on the Distribution Card. (Remove the cable using its connector; do not pull on the cable itself.)

4. Use the SMA wrench to disconnect the circulator from the “RF OUT” connection on the PLS.

5. Turn the assembly upright.

6. Hold onto the card with your left hand. Grasp the plate and the PLS to support it.

7. With your right hand, remove the four Phillips-head screws from the opposite side of the plate. (Be careful not to let the PLS fall.)

8. Lay the assembly back down on the work surface.

9. Lift off the PLS and set it aside.

Install the New Phase Lock Source

1. Compare the part number on the unit you removed to the one you are replacing it with to be sure they are identical. Also make sure the new PLS is the correct frequency.

2. Place the new PLS on the assembly plate.

3. Supporting the PLS and the plate, turn the assembly upright.


4. Insert and gently tighten the four Phillips-head screws.

5. Lay the assembly back down on the work surface.

6. Connect the Circulator to the “RF OUT” connector on the PLS. Use the SMA wrench to gently tighten the connection.

7. Plug the ribbon cable into the PLS connector on the Distribution Card. Make sure pin 1 of the ribbon (red stripe) is aligned with pin 1 of the card’s connector.

8. Replace the assembly in the radio and reconnect the cables according to the instructions on page 129 (Receiver) or page 131 (Transmitter).


• • • •••

140

• • • •••

PLS Crystal

Tools Required

• Antistatic workstation

• Grounding wrist or heel strap

• Standard X-Acto knife (do not use a pocket knife)

• Cotton swabs

• XceLite sockethead screwdriver (P22, size 5/64")

• White thermal compound, Wakefield part number 120-8

Removing the Crystal


2. If replacing the crystal in a Transmitter PLS, remove the Transmitter using the procedure on page 131.

If replacing the crystal in a Receiver PLS, perform the procedure for removing the Receiver on page 129.

3. Place the Transmitter or Receiver on a clean, static-free workspace.

Please observe precautions for handling electrostatic-sensitive devices.


4. Disconnect the ribbon cable from plug P3 on the PLS.

5. Disconnect the semi-rigid cable from the PLS isolator. Use the SMA wrench to loosen the connection.

6. Disconnect the other end of the semi-rigid cable from the upconverter. Set it aside.


• • • •••

142

• • • •••

7. Unplug the PLS ribbon cable from connector P2 on the distribution card.

8. Remove the 4 screws fastening the PLS to the assembly plate.

9. Remove the two screws fastening the P3 ribbon cable strain relief. Set them and the cable strain relief aside.


10. Disconnect the ribbon cable from the PLS and set it aside.

11. Remove the two spacer screws from each side of the PLS cable connector and set them aside.


• • • •••

144

• • • •••

12. Using a 5/64 socket head screwdriver, remove the 10 screws that secure the PLS cover plate. Set the screws aside.

13. Using the X-Acto knife, cut the warranty stickers at the adjoining points between the PLS cover plate and the housing. Separate the cover plate from the housing and set it aside.

14. Lift off the PLS cover and set it aside.


15. Pull the crystal oven straight up and out of its socket in the PLS and set it aside. The crystal is now exposed.

16. Use a cotton swab to wipe the excess thermal compound from the crystal.

17. Pull the crystal straight up and out of its socket.


• • • •••

146

• • • •••

Installing the New Crystal

18. Remove the washer that separates the crystal from the board and set it aside.

1. Check the new crystal. Make sure it has the same frequency markings as the original crystal. The length of its leads should be 0.15” long, ±0.01”; the leads should be straight.

2. Position the foam washer (saved in step 18) over the crystal leads.


3. Align the crystal leads with the three holes on the PLS board and insert the crystal. Be careful not to bend the leads. Push straight down until the crystal is firmly seated.

4. Using a cotton swab, apply a thin layer of thermal compound around the outside of the crystal and to the inside of the crystal oven.

5. Use a cotton swab to apply (or reapply) a thin layer of thermal compound to the inside of the crystal oven (set aside in step 15 of the previous procedure).


• • • •••

148

• • • •••

6. Align the oven leads with the sockets on the board and plug it in. Push it straight down until the oven is firmly seated against the PLS circuit board.

7. Reinstall the cover plate on the PLS and secure it with the 10 screws (removed in step 9 of the previous procedure). If a torque gauge is available, set the torque to 3 to 4 ounces per inch.


8. Reinstall the spacer screws removed in step 8 of the previous procedure.

9. Reconnect the PLS ribbon cable (disconnected in step 7 of the previous procedure) to connector P3 on the PLS.

10. If the cable relief was removed in step 6 of the previous procedure, reinstall it with the cable underneath.

11. Continue with “Test the Phase Lock Source” on page 150.


• • • •••

150

• • • •••

Test the Phase Lock Source

Tools Required

• Frequency counter, HP-5351A or equivalent

• Jeweler’s screwdriver, 0.15" wide blade

• Dual power supply unit, HP-6236B or equivalent

• Microwave attenuator, 10-20 dB, SMA, 50 ohms

• Digital voltmeter (DVM)

• Oscilloscope (optional)

• Miscellaneous test leads, clip leads, and coaxial cables (SMA male on one end for PLS connection; 50-ohm impedance)

• PLS setup board, Harris part number 021-110191-001

• Antistatic workstation (mat and wrist strap, properly grounded)


Procedure

1. Set output voltages on the dual power supply to +10V, ±0.1V and -12V, ±0.2V.

2. Turn off the dual power supply.

CAUTION: In the next step, make sure the power supply outputs are connected correctly to the PLS setup board.

3. Using clip leads, connect the dual power supply outputs to the +10, -12V, and GND terminals, respectively.

4. Connect the microwave attenuator to the RF OUT port on the PLS unit.

5. Connect the DVM and oscilloscope (optional) between the Phase Voltage test point and Ground on the PLS setup board.

6. Using a 50-ohm cable, connect the frequency counter to the REF MON port (also labeled J2) on the PLS.

7. Disconnect the PLS ribbon cable (P2) from the transmitter or receiver and connect it to the appropriate jack on the PLS setup board.


• • • •••

152

• • • •••

8. Turn on the power supply unit. Allow it to stabilize for 10 minutes.

Requirement: Current on the +10V line should be about 150 mA. Current on the -12V line should start at 200 to 500 mA and drop to less than 100 mA after a few minutes of warm-up.

9. Unscrew the protective cap over FREQ ADJ and set it aside.

10. Use the jeweller’s screwdriver, adjust the PLS frequency (REF ADJ or XTAL ADJ) until the frequency counter indicates the desired crystal frequency, ±10 Hz.

11. (Optional) Observe the waveform on the oscilloscope. It should be an approximate square wave, indicating that the loop is in the search mode. The red LED on the PLS front panel should light.


12. Using the jeweler’s screwdriver, adjust the VCO tuner (FREQ ADJ) counterclockwise until the tuner top is flush with its bushing, then slowly adjust it clockwise until the unit stops sweeping (no square wave is displayed on the oscilloscope) and the DC voltage range is between 3 and 7 volts DC.

CAUTION: Be careful when adjusting the VCO tuner in the following steps. If the tuner goes too deep, it may damage interior VCO parts.

13. Slowly adjust the VCO tuner until the DVM indicates 5.0V, ±0.1V.

14. Connect a microwave frequency counter to the microwave attenuator (attached to the RF OUT port in step 4). You will need to switch the input so the counter reads the correct frequency.

15. Measure the microwave output frequency to verify that it is correct.

Requirement: The frequency counter should indicate the correct microwave output frequency.

It is possible for the output frequency to be about 106 MHz too low. In this case, do the following:

a. Slowly turn the VCO tuner clockwise until the unit locks to the correct frequency.

b. Adjust the VCO tuner until the DVM indicates 5.0V, ±0.1V.

The counter should now indicate the correct microwave output frequency.

16. Turn off the power supply and remove the PLS from test setup.

17. Reconnect P2 to the transmitter or receiver assembly it was removed from in step 7.


• • • •••

154

• • • •••

nt ar els.

its

Reprogramming the PLS

If the original crystal is being replaced with one of a different frequency, the PLS IDEEPROM must be reprogrammed using the “RF AlignmeFixture Kit.” If the IDEEPROM is not reprogrammed, errors will appein the presented AGC level, as well as the transmit output power lev

The RF Alignment Fixture Kit (098-110451-001) and instructions for use are available from Harris. Refer to page 159 for contact information.


Fan

If you remove a fan from the MegaStar radio, it must be replaced with a fan or baffle. Otherwise, a fault alarm will occur.

Do not operate the MegaStar radio with an inoperative fan for more than 72 hours.


• • • •••

156

• • • •••

Remove the Fan

1. Loosen the two thumbscrews on the front of the fan assembly.

2. Pull the fan assembly out of the shelf.

Install the New Fan

1. Slide the new fan assembly into the vacant fan slot and push it firmly into place.

2. Gently tighten the two thumb screws on the front of the unit.


eme

of

ly

Chapter 9

• • • • • • Spare Parts, Return, Repair

Introduction

Whenever ordering a spare or replacement unit, make sure to specify the Harris part number and option. It is recommended that you order by specifying the part number and option appearing on the existing unit in your radio or by the part number and option specified on the bill of materials given in the Sales Order-specific binder.

To order spare or replacement units, and return items for repair, fill out the “Return Material Authorization Form” (see Chapter 11).

Part Numbers

The part numbers may appear in two ways. Each part numbering schis explained as follows.

12-digit part number located on the bill of materials:

Prefix The first two digits of the part number indicate the typeunit or level of assembly.

Model The third digit of the part number is the unit or assembmodel number.

X X X - X X X X X X - X X XPrefix Base SuffixModel


• • • •••

158

• • • •••

del

ent,

digits mber

is

ot

Base The 6-digit base number is a consecutive numerical set used for indicating a specific unit or assembly.

Suffix The 3-digit suffix indicates the unit or assembly option. For example, 003 indicates unit or assembly is option 3.

10-digit part number marked on the equipment:

Designation The designation is always “SD”.

Base The 6-digit base number indicates a specific unit or assembly.

Model # The model number indicates the unit or assembly monumber.

A separate, three-digit option number may also appear on the equipmsuch as “003”.

The part number on the replacement unit must have the same base and option number as the one you removed, however, the model nucan be higher.

For example, a failed unit with no Model indication in its part numberan “M1” model. It can be replaced by an “M2” Model. Or, a unit with “M2” in its part number can be replaced by an “M3” model. Units cannbe replaced with ones that have lower model numbers. Refer to the original equipment list to find the correct replacement parts for the specific unit.

S D - X X X X X X - M XDesignation Base Model

Chapter 9 Spare Parts, Return, Repair

Spare Products Support Center

Spare radio assemblies may be ordered from the Spare Products Support Center (SPSC). Refer to page 11 for telephone numbers.

Repair and Return

If you require module repair service, call the Customer Service Center and first request a Return Material Authorization (RMA) number. This request ensures that the repair will be done in a timely manner and prevents any delays caused by incomplete or missing information.

Please provide the following information when you call (or fax):

• Your name, company, and telephone number (fax number)

• Part Number and Serial Number (see label on the back of the shelf)

• Purchase Order Number

• Billing and shipping addresses

• Any special return packing or shipping instructions

• Any special customs clearance information required

Ordering Parts or Spares

Harris equipment is designed to be repaired by replacement at the unit level with readily available spares. For this reason, parts lists are not furnished with an order, nor are they recommended as a requirement.

Harris MCD Spare Products Support Center3 Hotel-de-VilleDollard-des-OrmeauxQuebec, Canada H9B 3G4


• • • •••

160

• • • •••

Any order above the component level must be for a complete unit (a unit marked with a six-digit SD number), or for an assembly that includes one or more units. Make all inquiries for spare units to the Spare Products Support Center (see page 11).


tting rice.

Repair and Return

Harris repairs all its manufactured products as well as coordinates repairs on vendor items that are part of its systems. The standard repair turnaround time for current models of some products is 5 working days upon receipt of the defective parts. Repair turnaround time for other products is 15 working days. Discontinued items repair turnaround is subject to the availability of spares.

Emergency repair is available with a 24-hour turnaround time for current production models of some products and 48 hours for other products. Turnaround time for Manufacturing Discontinued items is subject to the nature of the problems. Emergency repairs are billed at actual repair price (zero for warranty units) plus some surcharge per unit. Our normal shipping time is 4:00 P.M. (Central Time) unless special shipping instruction is requested.

Repair charges and turnaround time for OEM (vendor) items are set by Harris suppliers. Our close working relationships with our suppliers assure us of the best repair prices and turnaround time. Repair charges are billed at supplier’s cost plus the necessary handling fee.

Module Exchange

You may prefer to receive a replacement unit before you send your defective unit to us. Harris maintains an inventory of many different modules that can be shipped to you within 24 hours. Parts requiringretuning can be shipped within 48 hours.

All exchanged units must be returned to us within 15 days to avoid geinvoiced for the difference between the exchange price and the list p


• • • •••

162

• • • •••

Evaluation Fee

There is an evaluation charge per unit if no trouble is found and no repair is required.

Unrepairable Units

Equipment which has been damaged due to customer negligence or which has parts removed will be repaired at the prevailing flat repair fee, or on a time-and-material basis, whichever is higher and regardless of the warranty status. Any equipment that is determined unrepairable will be returned to the customer. An evaluation fee will be assessed. This fee will be refunded if the customer purchases a replacement unit within 30 days.

Return Freight

Harris prepays standard return freight back to our customers on warranty repairs. Return freight back to customers on billable repairs is invoiced to the customers. The customer pays for shipping units to Harris for both warranty and out-of-warranty repairs. Special shipping requests may be subject to additional charge.

All shipments outside the continental USA and Canada are subject to additional handling charge per shipment.

Please pack the unit carefully using static-free, sturdy packaging to prevent damage during transit.


Return Material Authorization

Before sending in your equipment for repair, first contact the Harris and request a return material authorization (RMA) number. Obtaining an RMA number insures you that the repairs will be done in a timely manner and prevents any delays due to incomplete information.

Please provide the following information:

1. Your name, company, and telephone number.

2. Equipment type, part number, and sales order number (labeled on back of shelf).

3. Detailed description of the problem.

4. Purchase order number.

5. Billing and shipping addresses.

6. Any special return packing or shipping instructions.

7. If required, customs clearance information.


• • • •••

164

• • • •••

Service Center Locations

U.S.A.

Canada

Refer to page 11 for telephone numbers.

Harris MCDAttn: Customer Service, RMA #_ _ _ _ _5727 Farinon DriveSan Antonio, TX 78249

Harris MCDAttn: Customer Service, RMA #_ _ _ _ _3 Hotel-de-VilleDollard-des-OrmeauxQuebec, Canada H9B 3G4



• • • •••

Chapter 10

• • • • • • Block Diagrams

This chapter contains block diagrams for the following configurations:

• MegaStar 0:1, single antenna

• MegaStar 1:1 (0:2), single antenna



• MegaStar 0:1, dual antenna

• MegaStar 1:1 (0:2), dual antenna




• • • •••

Chapter 11

• • • • • • Forms

Introduction

This section contains the following forms:

• Routine Maintenance Log Form

• Return Material Authorization Form

• Service Registration Form

Rack # ________________________ Radio # _____________________________________________ Location

Radio Site # ___________________ Coordinating Site _____________________________________ Initial Measurement Date

What to Measure

Whereto Measure

RadioAssy

Initial Level

YEAR AFTER INITIAL INSTALLATION

1st YEAR 2nd YEAR 3rd YEAR 4th YEAR 5th YEAR 6th YEAR 7th YEAR

Tx Crystalfrequency

MON jackon TransmitPLS in RFU

Tx A1

Tx A2

Tx B1

Tx B2

Rx Crystalfrequency

MON jackon ReceiverPLS in RFU

Rx A1

Rx A2

Rx B1

Rx B2

Transmitteroutput power

Use FarScan. Tx A1

Tx A2

Tx B1

Tx B2

SPU ControllerS2 block switch settings.

SPU ControllerS3 block switch settings.

NOTES:

1 01

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MegaStar Routine Maintenance Log Form

Return Material Authorization (RMA) Form

Service Locations:

The Customer Resource Center is available on the internet at http://www.microwave.harris.com/cservice/.

Company Name:_____________________________ Phone: ______________________________________

Requester’s Name: __________________________ Fax: _________________________________________

Billing Address Shipping Address____________________________________________ _____________________________________________

____________________________________________ _____________________________________________

____________________________________________ _____________________________________________

Service Requested: [ ] Repair [ ] Exchange

Requested Repair Urgency: [ ] Standard [ ] Expedite

Warranty Status: [ ] IN-WARR (Provide Sales Order No.) _______________________________

[ ] NON-WARR (Provide Purchase Order No.) _________________________

Requested Mode of Shipment: [ ] Standard Service [ ] 2nd Day Air [ ] Overnight

NOTE: IN-WARRANTY UNITS are returned via STANDARD SERVICE only. Please provide COURIER ACCOUNT

NUMBER if faster delivery is required.________________________________________________________________

SD Number and Options Part Description Problem/Service Required________________________ _____________________________ ________________________________

________________________ _____________________________ ________________________________

________________________ _____________________________ ________________________________

________________________ _____________________________ ________________________________

Special Instructions

_______________________________________________________________________________________________

_______________________________________________________________________________________________

_______________________________________________________________________________________________

Please do not write below this spaceDate Form Received: ____________________ Rec by: _________________________ Your RMA # is: ________

Repair/Exchange Price: Item 1_______________________ Item 4 _______________________

Item 2_______________________ Item 5 _______________________

Item 3_______________________ Item 6 _______________________

USA5727 Farinon DriveSan Antonio, TX 78249, USATel: 1-800-227-8332Fax: 1-514-421-3555

CANADA3 Hotel de VilleDollard-des-OrmeauxQuebec, Canada H9B 3G4Tel: 1-800-465-4654 or 1-514-421-8333

Service Registration Form

To facilitate warranty support and to receive product update information, please complete and return this form to our customer service department.

By fax: 514-421-3555

By e-mail: [email protected]

By mail: Harris MCDAttn: Customer Resource Center3 Hotel-de-VilleDollard-des-OrmeauxQuebec, Canada H9B 3G4

The Customer Resource Center is available on the internet at http://www.microwave.harris.com/cservice/.

Please print:

Company Name: _____________________________________

Requester’s Name: ___________________________________

Title________________________________________________ Dept. _____________________________

AddressCity _________________________________________ State/Province_____________________________

ZIP/Postal Code ______________________________ Country__________________________________

Telephone Number ____________________________ Fax Number ______________________________

E-mail_______________________________________

Original Sales Order/PO Number________________

(Sales order number is found in your documentation and on the equipment rack base plate.)

http://www.microwave.harris.com/cservice/


Chapter 12

• • • • • • Warranty Terms

Warranty and Product Support

Warranty and product support information is provided at the time of purchase with the sales invoice and other sales documents. Read the warranty information on page 178 for the equipment or assembly before contacting Harris Customer Service.


• • • •••

178

• • • •••

Standard Product Warranty Terms

Harris warrants that each product of its own manufacture shall, at the time of delivery and for a period of 24 months thereafter, be free from defects in materials and workmanship. For such products that are installed by Harris, this warranty shall extend for 18 months from date of installation, provided that the time from the date of delivery to the date of installation does not exceed 6 months. Such warranty shall not include any consumable components to which a specific manufacturer’s guarantee applies. If any Harris product shall prove to be defective in materials or workmanship under normal intended usage, operation, and maintenance during the applicable warranty period as determined by Harris after examination of the product claimed to be defective, then Harris shall repair or replace, at Harris’s sole option, such defective product, in accordance with procedures specified below, at its own expense, exclusive, however, of the cost of labor by the customer’s own employees, agents or contractors in identifying, removing or replacing the defective part(s) of the product.

In composite equipment assemblies and systems, which include equipment of such other than Harris manufacture, Harris’s responsibility under this warranty provision for the non-Harris manufactured portion of the equipment shall be limited to the other equipment manufacturer’s standard warranty. Provided, however, that if the other manufacturer’s standard warranty period is of a shorter duration than the warranty period applicable to Harris’s manufactured equipment, then Harris shall extend additional coverage to such other equipment manufacturer’s warranty equal to the differential in time between the expiration of the other manufacturer’s warranty and the duration of Harris’s manufactured equipment warranty applicable to such order. Harris shall repair or replace, at Harris’s sole option, such other manufacturer’s defective part(s) within 60 days after receipt of such parts by Harris in accordance with the below specified procedures, at Harris’s own expense, exclusive, however, of cost of labor by the customer’s own employees, agents or contractors in identifying, removing or replacing the defective part(s) of the product.

Chapter 12 Warranty Terms

t

ctive.

s set , ranty for ct,

ade t to f

any f its

An authorization to return products to Harris under this warranty must be obtained from a Harris representative prior to making shipment to Harris’s plant, and all returns shall be shipped freight prepaid. Collecshipments will not be accepted, but Harris will prepay return freight charges on repaired and replaced products found to be actually defe

Liability of Harris for breach of any and all warranties hereunder is expressly limited to the repair or replacement of defective products aforth in this section, and in no event shall Harris be liable for specialincidental or consequential damages by reason of any breach of waror defect in materials or workmanship. Harris shall not be responsiblerepair or replacement of products that have been subjected to negleaccident or improper use, or that have been altered by other than authorized Harris personnel.

Any warranties or conditions made herein by Harris are exclusive, min lieu of all other warranties or conditions, express or implied (exceptitle) including, but not limited to, any implied warranty or condition omerchantability, any implied warranty or condition of fitness for a particular purpose, or any warranty or condition arising out of performance or custom or usage of trade. Customer acknowledges circumstances causing any such exclusive or limited remedy to fail oessential purpose shall not affect any Harris warranty.


• • • •••

180

• • • •••

ion this paid

ent of t , r r ven

Limitation of Damages

Harris’ total and maximum liability under this agreement or in connectwith the subject matter of this agreement or any transaction related toagreement, shall be limited to one-half (1/2) of the aggregate amountto Harris, regardless of the basis for such liability. Customer acknowledges and agrees this section shall be enforceable in the evany claim made in connection with this agreement, including, but nolimited to, any claim for failure of delivery. In no event shall Harris beliable for any punitive, special, incidental, or consequential damagesincluding, but not limited to lost profits, opportunities or savings or foany loss of use of, or loss of data or information of any kind, howevecaused or for any full or partial loss of performance of any product, eif Harris has been advised of the possibility of such damages.

Chapter 12 Warranty Terms

• • • • • •Index

Numerics24V DC, plus or minus 2848V DC, plus or minus 28

Aaddress

e-mail 12orderwire 37

address, to order spare parts 160AGC

voltage, viewing 40alarm

cutoff switch 90display card 90

aligningdiversity antenna 41

alignment kit 154antenna

aligning diversity 41audible alarm

turning off 90

Bbackup, traffic 15battery

input 30bill of materials 157

business hours 11

CCanada e-mail 12capacity, MegaStar 15channels, voice 15Class A

computing device 25limits 25

combinationsorderwire card 32

commandactive or offline status 79AGC monitor, radio 1 76AGC monitor, radio 2 76radio 1 AGC monitor 76radio 1 RSL 40radio 1 Tx Level 75radio 2 AGC monitor 76radio 2 RSL 40radio 2 Tx Level 75radio power setting 76receive signal level

radio 1 40radio 2 40

transmit power 76Tx Level, radio 1 75Tx Level, radio 2 75verify system code 73


• • • •••

182 Inde• • • •••

computer, FarScan 16connector

BNC 74construction, network 15control and monitoring 16conversion kits 16coordinating site 86counter, frequency 29critical traffic 15critical traffic, backup 15crystal frequency, PLS 74crystal, PLS

replacing 140

Ddamage 27database 16DC power source 28degradation, performance 86digital

multimeter 92multimeter, specifications 29

diversity antenna, aligning 41documents, related 22dummy load 27

Eelectrostatic discharge 24electrostatic-sensitive device

handling requirements 24e-mail

Canada 12USA 12

equipmentaddress, setting 37

equipment photos 18equipment storage 24

ESDs 24evaluation fee 162external connections 28

Ffactory

test data 86failed units 91fan fault alarm 155far-end site 127FarScan 16, 72, 90

computer 16software 29status report 93

FarScan computer 29fault alarm, fan 155fault LED

Alarm Display 93FCC

measurements 86rules 25

FCC Title 47, Part 101 25features, MegaStar 17federal compliance 26Federal regulations 25

Part 101 25Part 1040 26Part 15 25Section 21, Parts 1010 & 1040 25

fiber opticlinks 15

Food and Drug Administration 25form

RMA 175Routine Maintenance Log 174Service Registration 176

frequencycounter 29, 92out of range 74

x

PLS crystal 74fuse card location 31fuse ratings 31fuses 31

Ggrounding 23

Hhalf-height slots 32Harris web site 12history files 85hours 11

IIEC 801-5 28improper practices 27initial

measurements 86testing results 86

injury 27inoperative fan 155installation 27

customer requirements 29power runs 31separate fusing 31

installation procedurepowering on 31

interference 25internet site 12interrogate 90Inventory program 29

Kkits, conversion 16

Llaser

device classification 25devices 25radiation 26

limits, radiated emissions 25links, fiber optic 15local oscillator phase lock 71Location 86location

alarm display unit 19cooling fans 18data orderwire 19DDM interface 19decoder 19demodulator 19filter/switch assembly 18fuse card 31handset 19IS3 interface 19modulator 19overhead processor 19Overhead Processor card 32power amplifier 18power supply 19receiver 18SPU controller 19transmitter 18VF orderwire 19

log form entries 87

Mmailing address, spare parts 160managing operation 77manual

conventions 21organization 20scope 20

manufacture of laser equipment 25measurements

required routine 87

MegaStar 155 M:N 183 • • • •••

184 Inde• • • •••

MegaStarpower source 28power switch 74

MegaStar capacity 15MegaStar configurations 16MegaStar features 17model number 158module exchange 161moisture buildup 24moisture-sensitive device 24monitoring and control 16monitoring performance 77

Nnetwork

construction 15supervision 90

Ooffice battery

distribution system 31operation 77

in residential areas 25managing 77

optical transceivers 25ordering parts 159orderwire address 37Orderwire card

combinations 32organization, manual 20original equipment list 158out of range frequency 74Overhead Processor card

location 32

PPA power switch 74

part numbers 157performance

checking 85degradation 86monitoring 77

phase lock 71phone number

orderwire, changing 37PLS

crystal, replacing 140reprogramming 154

power meter 92specifications 29

power runs 31power source 28

DC 28power switch, MegaStar 74procedure

repair and replacement 95trouble isolation 89

product support 177program, Inventory 29protection system 71

Rradiated emissions limits 25radiation hazard 27radio alignment kit 92radio communications interference 25Radio Site # 86rate, transport 15ratings, fuses 31receiver

AGC alignment 71regulatory compliance 25related documents 22repair and replacement procedures 95repair and return 161

x

replaced units 85replacement procedure

transmitter 129reprogram

VF Orderwire address 123required

routine measurements 87test equipment 29

requirementsexternal connection 28

requirements, installation 29residential area, operation in 25return freight 162return material authorization 163returning failed equipment 97RF Alignment Kit 154routine maintenance

log 86routine measurements

required 87

SS2 switch block

location 33safety precautions 23, 27scope 20separate fusing 31Service Registration form 176setting

equipment address 37shielded cables 25site controls 90software

FarScan 16utility 16

software requiredcurrent equipment database 29FarScan 29MegaStar Inventory program 29

software, Inventory 29spare parts

ordering 159spare parts, storage 24spares 93specifications

digital multimeter 29frequency counter 29power meter 29

SPU ControllerS2 switch block 33

standard product warranty terms 178static electricity problems 24supervising the network 77surge protection 28switch block location, S2 33symbol

exclamation point 21pencil and pad 21stop sign 21

symbol, ESD 24symbols 21system verification 71

Ttelecommunications network

supervising 77terms

radio 21traffic direction 21

test equipment required 29FarScan

computer 29frequency counter 29power meter 29

test pointAGC voltage 40

traffic, backup 15traffic, critical 15

MegaStar 155 M:N 185 • • • •••

186 Inde• • • •••

transmitteroutput power 71

transport rate 15trouble isolation procedure 89turn off the audible alarm 90

Uunits

replaced 85unrepairable units 162upgrades 16URL 12USA e-mail 12

Vverify 71verify the system 71VF Orderwire

reprogram address 123voice equivalent channels 15voltage

AGC 40

Wwaveguide, opening 27web site 12

x