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Knowledge Base

FAQ-TDR Test gives different readings for the same line

Publication Date:  2012-07-25  |   Views:  172  |   Downloads:  0  |   Author:  Ali Alaradi  |   Document ID:  EKB0000443098

Contents

Issue Description

Running a TDR test  multiple times for the same line give different copper lengths. In this case we can not depend on SLTS to measure the  broadband line length. 

Alarm Information

Null

Handling Process

All lines that have been tested for TDR do not give a fixed length cable. the length cable vallue is read every time differently. A n actual cable length of around 4.5KM when measured by SLTS gave 2.2Km, 3.7 Km..etc. every time TDR value changes.

Root Cause

Nul

Suggestions

Nul