NVP for generic cable types

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Introduction

Correct configuration of NVP ensures the most accurate determination of cable length during testing. 

 

Solution

These are the average values for NVP (%) for some generic types of twisted-pair cable.  

Standards stipulate that NVP must be specified at 10MHz signal at 20°C (68°F).

(Source: Fluke Networks)

Category U/UTP U/FTP F/UTP S/FTP
5e 69 - 69 -
6 69 74 70 -
6A 68.2 74 74 77
7 - - - 78
7A - - - 78
8 - - -

72