Wavetek 147 Especificaciones Pagina 403
- Pagina / 410
- Tabla de contenidos
- SOLUCIÓN DE PROBLEMAS
- MARCADORES
Valorado. / 5. Basado en revisión del cliente
379
Index
Node List option 142
nodes 368
noise
accumulation, forward path 96
headend 7
impulse, troubleshooting 333
reverse broadcast 304-305
reverse noise 68
reverse path troubleshooting 96-97
segmented 327
Spectrum Analyzer mode, cautions 331
troubleshooting 331-332
Noise Enable 88
noise offset 368
Noise Offset (MHz) 48
noise offset frequency adjustments
C/N mode 236
Noise Offset Frequency Adjustments option 279
noise trace 88
normal scan rate 116
NTSC (National Television System Committee)
368
numeric entry mode 221
O
Operator Name option 223
options
PathTrak Field View 141
SDA-5000 7
output level calculation worksheet 271
overlapping channels 368
Overlay mode
sweep files 203-204
selecting 204-205
P
PAL (Phase Alternate Line) 368
PAM (Pulse Amplitude Modulation) 368
parameters
audio offset 49
bandwidth 48
carrier types 47
Channel Number 48
channel plans 38-57
editing 46-49
Digital Carriers 46
Dual 46
Frequency (MHz) 47
Label 48
modulation 49
noise offset 48
QAM 46
Scrambled 48
signal standard 49
SNGL 46
sweep 46
Sweep Channel 48
symbol rate 49
tilt channels 48
Video Channel 46
Pass band 368
PathTrak key 14
PathTrak mode 21-22, 141
Amplifier/Low-Pass Filter submenu 144-
145
configuration 141-142
Level submenu 145
measurement hold 147
measurement traces 142
Node List 145-147
node information 147
updating 145
PathTrak, configuration 28
PCs, files uploading 197, 247
Peak Hold trace 21
phase noise impairments 167
physical plant, reverse path troubleshooting 97
pilot channel 369
Pilot Level 369
pixels 369
Pre-Amp state, C/N measurement 123
preamps, reverse path troubleshooting 99
preventative maintenance, see troubleshooting
Print support mode key 220
Printer option 224
printers 24
compatibility 224
printing
Autotest files 259-265
Autotest results 191
files 33, 197
measurement files 200, 248
measurement mode screens 221
screens 33
probe points (Autotests)
selecting 186
- 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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