Pots Testing And Fault Location; Introduction - Test Equipment Depot 990DSL User Manual

Chapter 4

POTS Testing and Fault Location

Introduction

This chapter shows you how to use the CopperPro to identify and locate
common physical problems on OSP copper pairs, and how to qualify lines for
POTS service. The chapter begins by showing you how to set up and run a
POTS Auto-Test. The POTS Auto-Test is comprised of a sequence of
individual parametric tests that run automatically. Results from this test can
give you a quick overall assessment of the performance characteristics of
either a spare or working POTS pair.
The chapter then describes the individual tests in the POTS toolbox. This
toolbox contains a group of specialized tests that provide detailed information
to help you diagnose specific problems in a cable. In the POTS toolbox, you
will find two groups of tests: copper media (DC) tests and transmission (AC)
tests. The copper media tests are designed to identify and locate physical
voltage, resistance, and capacitance faults, and test for continuity in a cable.
The transmission tests provide accurate measurements of signal loss, metallic
noise, power influence, and longitudinal balance to help you uncover root
problems affecting signal transmission.
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