Exfo AXS-100 Series OTDR Manuel d'utilisateur Page 34
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26 AXS-100 Series
Setting the Acquisition Parameters
Setting the Acquisition Parameters
You can set parameters such as IOR (group index), backscatter, and helix
factor. You can also enable or disable the first connector check.
Setting the IOR, Backscatter, and Helix Factor
Your unit contains default IOR (group index), backscatter, and helix factor
values that you can modify if they do not suit your testing needs. You
should set the IOR (group index), backscatter, and helix factor before
performing tests in order to apply them to all newly acquired traces.
³ The index of refraction (IOR) (also known as group index) is used to
convert time-of-flight to distance. Having the proper IOR is crucial for
all OTDR measurements associated with distance (event position,
attenuation, total length, etc.). IOR is provided by the cable or fiber
manufacturer.
³ The (Rayleigh) backscatter value represents the amount of backscatter
in a particular fiber. The backscatter is used in the calculation of ORL
and reflectance, and it can usually be obtained from the cable
manufacturer.
³ The helix factor takes into account the difference between the length
of the cable and the length of the fiber inside the cable; it does not vary
with wavelengths.
The length of the OTDR distance axis is always equivalent to the
physical length of the cable (not the fiber).
- AXS-100 Series 1
- Contents 3
- Certification Information 7
- DECLARATION OF CONFORMIT 8
- 1 Introducing the AXS-100 9
- Series OTDR 9
- 2 AXS-100 Series 10
- Main Features 10
- Other test utilities: 11
- Power meter (optional) 11
- Power Sources 13
- Typical Applications 13
- OTDR Basic Principles 14
- 2 Safety Information 17
- Electrical Safety Information 18
- 3 Getting Started with Your 19
- 12 AXS-100 Series 20
- Turning the Unit On and Off 20
- Using Menus and Keypad 21
- 4 Customizing Your OTDR 23
- 16 AXS-100 Series 24
- Setting the Date and Time 25
- Adjusting the Brightness 26
- Selecting a Printer 27
- 20 AXS-100 Series 28
- 5 Setting Up Your OTDR 29
- 26 AXS-100 Series 34
- 28 AXS-100 Series 36
- Setting Analysis Parameters 37
- 30 AXS-100 Series 38
- Setting Pass/Fail Thresholds 39
- 32 AXS-100 Series 40
- Setting Macrobend Parameters 41
- 34 AXS-100 Series 42
- Setting Storage Parameters 43
- 36 AXS-100 Series 44
- 6Testing Fibers 45
- Testing in Auto Mode 46
- 40 AXS-100 Series 48
- Testing in Fault Finder Mode 50
- 44 AXS-100 Series 52
- 46 AXS-100 Series 54
- 48 AXS-100 Series 56
- ASTRACE once again 57
- Measurements 58
- 7 Managing Test Results 61
- Events Pane 62
- Trace Pane 63
- Trace Info. Pane 64
- Using Markers 66
- Using Zoom Controls 67
- 60 AXS-100 Series 68
- Printing Test Results 70
- Opening Trace Files 71
- Saving Files 72
- Checking Available Memory 73
- Creating Folders 74
- 68 AXS-100 Series 76
- 8 Using Your OTDR as a Light 83
- 76 AXS-100 Series 84
- Modulating the Source Signal 85
- 9 Measuring Power or Loss 87
- 80 AXS-100 Series 88
- Reverting to Factory Settings 90
- 84 AXS-100 Series 92
- Measuring Power or Loss 94
- 10 Identifying Fiber Faults 97
- Visually 97
- 90 AXS-100 Series 98
- 92 AXS-100 Series 100
- Performing a Ping Test 103
- 96 AXS-100 Series 104
- Performing a Trace Route Test 105
- 98 AXS-100 Series 106
- 13 Maintenance 109
- IMPORTANT 110
- Replacing Batteries 114
- Recalibrating the Unit 115
- OTDR 109 117
- Recycling and Disposal 118
- 14 Troubleshooting 119
- 112 AXS-100 Series 120
- Solving Common Problems 120
- 114 AXS-100 Series 122
- Obtaining Online Help 123
- 116 AXS-100 Series 124
- Transportation 125
- 15 Warranty 127
- Liability 128
- Service and Repairs 130
- OTDR 123 131
- A Technical Specifications 133
- Technical Specifications 134
- B Description of Event Types 135
- Continuous Fiber 136
- End of Analysis 137
- Non-Reflective Event 138
- Positive Event 139
- Launch Level 140
- Fiber Section 141
- 134 AXS-100 Series 142
- Merged Reflective Event 144
- OTDR 137 145
- Reflective Event 146
- OTDR 139 147
- OTDR 141 149
- OTDR 143 151
- ₼⦌␂ℝ☀⹂䓸德棟Ⓟ䤓屓⸩ 153
- MARKING REQUIREMENTS 154
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