Exfo FTB-700 for FTB-1 Manuel d'utilisateur Page 308
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Description of Event Types
300 FTB-700 Series
Launch Level
Launch Level
This event indicates the level of the signal launched into the fiber.
The figure above shows how the launch level is measured.
A straight line is plotted using least-square approximation to fit all trace
points in the linear area between the first and second detected events.
The straight line is projected toward the Y-axis (dB) until it crosses the
axis.
The crossing point indicates the launch level.
<<<< in the events table indicates that the launch level is too low.
Reflected power
(dB)
Distance
(km)
Launch level
event position
Second event
Launch
level
Linear area
- FTB-700 Series 1
- Contents 3
- Certification Information 8
- Main Features 10
- Trace Acquisition Modes 10
- Optional Software Packages 11
- Data Post-Processing 11
- 4 FTB-700 Series 12
- OTDR Basic Principles 13
- 6 FTB-700 Series 14
- 2 Safety Information 17
- 10 FTB-700 Series 18
- Symbol Meaning 18
- Laser Safety Information 19
- 3 Getting Started with Your 21
- 14 FTB-700 Series 22
- Turn screws 23
- Back panel 23
- 16 FTB-700 Series 24
- Starting Module Applications 26
- 20 FTB-700 Series 28
- 24 FTB-700 Series 32
- 26 FTB-700 Series 34
- 28 FTB-700 Series 36
- Setting Macrobend Parameters 37
- 30 FTB-700 Series 38
- 5 Testing Fibers in Auto Mode 39
- 32 FTB-700 Series 40
- 6 Testing Fibers in Advanced 43
- 36 FTB-700 Series 44
- 38 FTB-700 Series 46
- 40 FTB-700 Series 48
- Acquisition Time 51
- Parameter-setting dials 53
- Selection 53
- Acquisition 56
- when you open a trace file 59
- 52 FTB-700 Series 60
- 56 FTB-700 Series 64
- 7Testing Fibers in Template 65
- Mode (optional) 65
- Restrictions of Template Mode 66
- Acquiring the Reference Trace 68
- 62 FTB-700 Series 70
- 66 FTB-700 Series 74
- 68 FTB-700 Series 76
- Selecting a Reference Trace 77
- 72 FTB-700 Series 80
- 74 FTB-700 Series 82
- Finder Traces 84
- Fault Finder File Name 86
- 80 FTB-700 Series 88
- Check for Fault Finder 89
- 82 FTB-700 Series 90
- 84 FTB-700 Series 92
- 9 Customizing Your OTDR 97
- 90 FTB-700 Series 98
- 92 FTB-700 Series 100
- Selecting the Distance Units 101
- 94 FTB-700 Series 102
- 96 FTB-700 Series 104
- 98 FTB-700 Series 106
- Keyboard 107
- 100 FTB-700 Series 108
- OTDR 101 109
- Graph View 110
- Linear View 112
- OTDR 105 113
- Summary Table 114
- OTDR 107 115
- Events Tab 116
- Analyzing Traces and Events 119
- Measure Tab 120
- Trace Info. Tab 120
- OTDR 113 121
- 114 FTB-700 Series 122
- Selecting the Default View 123
- Acquisitions 125
- 118 FTB-700 Series 126
- Using Zoom Controls 127
- Zoom window 130
- OTDR 123 131
- To d i sp l a y a b l a c k 131
- Customizing the Event Table 132
- Displaying or Hiding a Trace 134
- 128 FTB-700 Series 136
- OTDR 129 137
- OTDR 131 139
- 132 FTB-700 Series 140
- OTDR 133 141
- IMPORTANT 142
- Modifying Events 143
- 136 FTB-700 Series 144
- Inserting Events 147
- Deleting Events 149
- Managing Comments 150
- OTDR 145 153
- Loss and attenuation 153
- Threshold at 0.05 dB 155
- Threshold at 0.1 dB 155
- Threshold at 0.15 dB 155
- 148 FTB-700 Series 156
- OTDR 149 157
- 150 FTB-700 Series 158
- OTDR 151 159
- Reflective Ends of Fiber 160
- Swapping Traces 163
- Opening Trace Files 164
- File Type Zoom Marker 165
- 158 FTB-700 Series 166
- 11 Analyzing the Results 169
- Manually 169
- 162 FTB-700 Series 170
- Using Markers 171
- 164 FTB-700 Series 172
- Least-Square Approximation) 173
- 166 FTB-700 Series 174
- OTDR 167 175
- A-B LSA loss 175
- 168 FTB-700 Series 176
- Getting Reflectance 180
- OTDR 173 181
- OTDR Test Application 183
- OTDR Trace File Compatibility 184
- File generated with 185
- 178 FTB-700 Series 186
- 13 Creating and Generating 187
- 180 FTB-700 Series 188
- Generating a Report 189
- OTDR 183 191
- 14 Using the OTDR as a Light 195
- 188 FTB-700 Series 196
- 15 Analyzing Traces with the 199
- Bidirectional Analysis 199
- Application (Optional) 199
- 192 FTB-700 Series 200
- Application 201
- The main window is displayed 202
- OTDR 195 203
- OTDR 197 205
- 198 FTB-700 Series 206
- OTDR 199 207
- Measurement 208
- Viewing Results 210
- OTDR 205 213
- Bidirectional 215
- 208 FTB-700 Series 216
- Unidirectional 216
- OTDR 211 219
- Bidirectional Measurement 221
- 214 FTB-700 Series 222
- OTDR 215 223
- Span start 223
- Span end 223
- OTDR 217 225
- 220 FTB-700 Series 228
- 222 FTB-700 Series 230
- Using Markers to Edit Events 231
- 226 FTB-700 Series 234
- 228 FTB-700 Series 236
- 230 FTB-700 Series 238
- 232 FTB-700 Series 240
- 234 FTB-700 Series 242
- 236 FTB-700 Series 244
- OTDR 237 245
- Setting General Parameters 246
- OTDR 239 247
- Gridlines displayed 247
- 240 FTB-700 Series 248
- Customizing the Events Table 249
- 242 FTB-700 Series 250
- Information 252
- Setting Pass/Fail Thresholds 253
- 246 FTB-700 Series 254
- Test Default Minimum Maximum 254
- 248 FTB-700 Series 256
- 252 FTB-700 Series 260
- OTDR 253 261
- 254 FTB-700 Series 262
- Bidirectional Files 265
- OTDR 259 267
- 260 FTB-700 Series 268
- Creating Reports 269
- 16 Maintenance 273
- 266 FTB-700 Series 274
- Cleaning EUI Connectors 274
- Verifying Your OTDR 276
- Verif ying You r OTDR 277
- 270 FTB-700 Series 278
- Verif ying Your OTDR 278
- 2km or more 280
- Fiber end 280
- 1 to M reels of fiber 280
- (Add as needed) 280
- 274 FTB-700 Series 282
- Recalibrating the Unit 284
- Recycling and Disposal 285
- 17 Troubleshooting 287
- 280 FTB-700 Series 288
- Problem Cause Solution 288
- 282 FTB-700 Series 290
- Transportation 291
- 18 Warranty 293
- Service and Repairs 295
- 288 FTB-700 Series 296
- A Technical Specifications 297
- Technical Specifications 298
- OTDR 291 299
- B Description of Event Types 301
- Span Start 302
- Span End 302
- Short Fibers 302
- Continuous Fiber 303
- End of Analysis 304
- Non-Reflective Event 305
- Reflective Event 306
- Positive Event 307
- Launch Level 308
- Fiber Section 309
- Merged Event 310
- OTDR 303 311
- Pass/Fail Tests 312
- All Event Types Are Tested 313
- 306 FTB-700 Series 314
- OTDR 307 315
- OTDR 311 319
- OTDR 313 321
- OTDR 315 323
- OTDR 317 325
- ₼⦌␂ℝ☀⹂䓸德棟Ⓟ䤓屓⸩ 327
- MARKING REQUIREMENTS 328
Produits connexes et manuels pour Instruments de mesure Exfo FTB-700 for FTB-1
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