User`s guide

Table of Contents
Agilent 81610A/11A/12A/13A/14A Return Loss Module, Fifth Edition 7
Table of Contents
Safety Considerations 3
Safety Symbols 3
Initial Inspection 3
Line Power Requirements 4
Operating Environment 4
Storage and Shipment 4
Initial Safety Information for Return Loss Modules 5
The Structure of this Manual 6
Conventions used in this manual 6
Getting Started with Return Loss 11
The Return Loss Module 13
A Description of the Front Panel 15
Optical Output 15
What is Return Loss? 16
What is Insertion Loss? 17
How to Choose a Light Source 18
Calibration Measurements 19
Making a Return Loss Measurement 19
Setup 20
Calibrating the Return Loss Module 21
Calibration using the Agilent 81000BR Reference Reflector 23
Reflectance Calibration 23
Termination Calibration 25
Calibration using the Agilent 81610CC Reference Cable 26
Reflectance Calibration 26
Front Panel Delta Calibration 27
Termination Calibration using the Measurement Patchcord 29
How to Measure Return Loss 31
How to Measure Return Loss and Insertion Loss 31
Viewing the Calibration Values 32
A Background to Return Loss Measurement 36
Measuring the Reflected Power from a Component with Known