Wavetek 147 manuály

Wavetek 147 Specifikace (410 strany)

Značka: Wavetek | Kategorie: Měření, testování a kontrola | Velikost: 4.99 MB |

Angličtina

Tabulka s obsahem

SDA Series

1

Stealth Digital Analyzer

1

Operation Manual

1

6510-00-0442, Rev D

2

Important safety instructions

5

Reverse Path Troubleshooting

10

Measuring System Performance

10

Spectrum Analyzer Mode

11

PathTrak Field View (OPT3)

11

Contents

12

Automatic Test

13

Maintenance

14

Application Notes

17

Specifications

19

Status Indicators and Icons

20

User and Error Messages

20

Glossary

20

ABOUT THE MANUAL

21

Section I Introduction

21

Section II Field Units

21

xxii

22

Section III Headend Units

23

Section IV Appendices

23

Document Conventions

23

Keystroke Conventions

24

The SDA Family

25

Field Unit

26

Headend Units

26

FIELD UNIT (SDA-5000)

27

Reverse Sweep Alignment

31

Chapter 2

33

The Navigator Interface

34

Navigator Tabs and Icons

35

Key Controls

37

Measurement Mode Keys

38

40

Level Measurement

41

Spectrum Analysis

45

CONFIGURING THE SDA-5000

46

Global Configuration

47

Channel Plan Configuration

51

Sweep Configuration

52

PathTrak Configuration (OPT3)

52

Diagnostics

53

System Information

56

Channel Plans

59

CHANNEL PLAN CONFIGURATION

60

Select Channel Plan

62

Video Signal Type

63

Channel Tuning Sequence

64

Build Channel Plan

64

Edit Channel Plan

67

Editable Parameters

70

Configuring a Digital Carrier

73

Inverted Spectrum Features

76

Delete Unused Channels

77

Specify Auto Measurements

77

Edit Limits

79

Edit Digital Limits

80

Copy Remote Plan

81

Chapter 4

83

TEST POINT COMPENSATION

83

SWEEP RECEIVER CONFIGURATION

88

Table 4-1 Sweep Options

90

SWEEP Menu Options

91

Signal Level Considerations

95

Sweep Setup

98

Forward Sweep Operation

99

Soft Key Icons:

100

Forward SWEEP Screens

101

Frequency Screen

101

Level Screen

103

Limit Screen

104

Tilt Screen

105

Reverse Sweep

107

Reverse Injection Levels

107

Setting the Sweep Direction

108

Reverse SWEEP Screens

109

Reverse Frequency Screen

110

Reverse Level Screen

110

Reverse Noise Screen

111

Reverse Noise Level Screen

112

REV ALIGNMENT Main Screen

114

REV ALIGNMENT Level Screen

115

SWEEPLESS SWEEP

116

LOOPBACK SWEEP (OPT2)

117

PROBLEMS IN ADVANCED SERVICES

120

Variable Time Slot TDMA

127

Troubleshooting TDMA

128

References

132

Level Measurements

134

MEASURING SIGNAL LEVELS

134

Tilt Measurements

136

Tilt Compensation

137

Balancing Amplifiers

138

Scan Measurements

139

Scan Rates

140

Audio Carriers

140

LEVEL Submenu

141

FREQUENCY Submenu

141

TILT Submenu

142

LIMIT Submenu

142

CARRIER-TO-NOISE MEASUREMENTS

143

Why Measure Cable Modem C/N?

146

HUM MEASUREMENTS

148

MODULATION MEASUREMENTS

150

CSO/CBT MEASUREMENTS

152

AMPLIFIER Submenu

159

ZERO SPAN Submenu

160

TIMEBASE Submenu

162

BANDWIDTH Submenu

163

PATHTRAK MODE OPERATION

166

Node List Mode

169

Node Selection

171

Node Information

171

Measurement Hold

171

Chapter 9

173

INTRODUCTION

173

QUICK START

174

Correcting Signal Lock Errors

175

Equalizer Mode (Quick Start)

177

DIGITAL SUMMARY MODE

177

Features and Definitions

178

Modulation Format

179

Symbol Rate

179

DETAIL Display

179

Basic Operation

180

Viewing the DETAIL Display

181

Viewing the QAM Level Display

181

Editing the Modulation Format

182

Editing the Symbol Rate

183

QAM INGRESS MODE

184

Measuring QAM INGRESS

186

Editing the Reference Level

188

Editing the Scale Parameter

188

Constellation Basics

190

CONSTELLATION MODE

190

Common Impairment Types

191

Using the Zoom Feature

196

EQUALIZER MODE

198

In-Channel Group Delay Screen

201

TEST LOCATIONS

204

Table 10-1 Parameters

205

Entering a New Location

207

Deleting an Existing Location

207

Editing an Existing Location

207

Choose Location

208

PERFORMING AN AUTO TEST

208

Edit Location

209

Select Probe Point

210

Compensation

212

Results File Name

212

Type of Test

213

Temperature

214

Canceling an Auto Test

215

AUTO TEST RESULTS

215

Viewing Intervals

218

Chapter 11

221

STORING FILES

222

VIEWING AND PRINTING FILES

224

SWEEP REFERENCES

225

OVERLAY MODE

227

Files: Overlay Mode

230

Battery Terminal Cleaning

232

Charging the Battery

232

Cleaning the Instrument

233

Annual Calibration

233

Getting Technical Assistance

233

ABOUT OUR SERVICE

234

Customer service locations

235

Instrument services

235

Consulting Services

236

Technical training

237

Warranty information

237

Equipment return instructions

239

Chapter 13

241

USER INTERFACE ELEMENTS

241

Soft Keys

242

Navigator

242

Support Mode Selection Keys

244

Diamond Keys

244

Alphanumeric Entry Keys

244

Printing

245

Global Setup

246

GLOBAL CONFIGURATION

246

Measurements Setup

249

Channel Plan Setup

251

Sweep Transceiver (SDA-5500)

251

Reverse Sweep (SDA-5510)

252

Level Mode

252

BASIC MODES OF OPERATION

252

Tilt Mode

254

Level Adjustments

255

Scan Mode

256

Frequency Adjustments

257

Scan Rate

257

frequency

259

Bandwidth Adjustments

260

Measuring Hum

261

Sweep Mode (SDA-5500)

267

Sweep Mode (SDA-5510)

268

WORKING WITH FILES

271

USING AUTO TEST

272

How To Perform An Auto Test

276

Auto Test Location

277

Auto Test Characteristics

277

Test Point Type

278

Voltage Measurements

279

Test Point Compensation

280

Results File

281

Type Of Test

281

Immediate

281

Scheduled

282

SDA-5500/SDA-5510 Sweep

291

Configuration

291

Setting Levels

293

Forward Telemetry Level

296

Forward Sweep Insertion Level

296

Include Audio Carriers

297

Access Reverse Sweep Plans

297

Creating Channel Plans

298

First Channel Plan Procedure

299

Editing A Channel Plan

301

Testing the Transmitter Setup

307

Stealth Reverse Sweep Concept

308

CONFIGURING REVERSE SWEEP

308

Basic Reverse Sweep Procedure

309

Wiring Connections

309

Dual Cable Network

311

Reverse Sweep Setup

312

(SDA-5500 and SDA-5510)

313

Reverse Sweep Channel Plans

314

Editing a Reverse Sweep Plan

318

SDA-5500

320

USING BOTH HEADEND UNITS

321

Forward Sweep Theory

322

SWEEP HISTORY AND THEORY

322

Telemetry Channel

323

Reverse Sweep Theory

324

Productivity Tools

325

Sweep References

326

Optical Node

326

Reverse Amplifier Alignment

327

Reverse Noise Broadcast

328

File Overlay

329

3. Edit Channel Parameters

333

Copying Channel Plans

334

Field Unit Settings

335

Common Forward Sweep Problems

337

No Communication

338

Bad Response

338

Faster Forward Sweep

338

Other Applications

339

Tips & Hints

340

Step-by-Step Headend Set Up

342

REVERSE SWEEP AND BALANCE

342

Before You Leave the Headend

345

Another Way

347

Common Return Sweep Problems

348

History of CPD

353

RETURN PATH TROUBLESHOOTING

353

Troubleshooting CPD

354

Test Location Considerations

354

The Noise Mode

355

Section 76.605(a)

359

PROOFING AND TESTING

359

Ena Tilt Swp Scr

361

Hum [76.605(a)(10)]

364

Headend Tests [76.605(a)(11)]

365

Carrier-to-Noise

368

Hum Measurement

368

Depth of Modulation

368

Tilt Measurement

368

Sweep Mode

369

Spectrum Mode

369

Zero-Span Mode

370

Reverse Transmitter

370

Telemetry

370

Data Storage

371

Serial Interface

371

Input Configuration

371

Power Sources

371

Forward Transmitter (OPT 2)

372

QAM View Option (Option 4)

372

MER (Modulation Error Ratio):

373

EVM (Error Vector Magnitude):

374

BER (Bit Error Rate):

374

Measurable QAM Ingress:

374

Channel Bandwidth:

374

Power Source:

375

Soft Key Icons

378

SDA Option 3 -- PathTrak

381

SDA Option 4 -- QAM

382

Symbols and Numbers

395

frequency adjustments

403

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