Contents
5
1. Introduction and Measurement Theory
Fault Location Measurement Theory 10
How the Analyzer Converts Frequency Data to Distance Data 12
Start/Stop Distance and Frequency Span Explanation 13
Cable Impedance and Structural Return Loss Measurement Theory 14
Cable Impedance 14
SRL and Periodic Cable Faults 18
SRL and Discrete Cable Faults 22
Techniques for Removing Connector Effects 22
Measurement Uncertainties 25
2. Cable Preparation
Cable Preparation Problems 31
Bent Cable 31
Deformed Cable 32
Contaminated Dielectric 33
Damaged Outer Conductor 34
Non-Flush Cut 35
Recommended Tools and Cables 36
Recommended Tools 36
Recommended Cables 36
3. Making Fault Location Measurements
Basic Measurement Procedures 39
Enabling the fault location function 40
Selecting the transformation type. 40
Calculating Measurement Conditions 41
Setting Window 47
Setting Frequency Range and Number of Points 48
Setting the Velocity Factor 50
Setting the cable loss 50
Setting Display Range 51
Calibrate the Analyzer 52
Connect the Cable Under Test 54
Fault Location Measurement Setup using the VBA Utility Program 55
4. Making SRL Measurements
How to Make SRL Measurements 59
Setting Sweep Type, Sweep Range, and Number of Points 59
Enabling SRL Function 61
Setting Average Impedance 62
Calibrate the Analyzer 62
Connect the Cable Under Test 65
Determine the Connector Model 65
Perform the SRL Cable Scan 69
Interpret the SRL Measurement 72
5. Making Impedance Measurements
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