NVP for generic cable types: Difference between revisions

Latest revision as of 15:17, 7 April 2024

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

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).

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

@@ Line 2: / Line 2: @@
 == Introduction ==
-A correct configuration of NVP assures the most accurate calculation of the electrical length of the link under test.&nbsp;
+Correct configuration of NVP ensures the most&nbsp;accurate determination&nbsp;of cable length during testing.&nbsp;
 &nbsp;
@@ Line 8: / Line 8: @@
 == Solution ==
-These are the values for NVP for the most common types of twisted-pair cable.&nbsp;
+These are the average values for NVP (%) for some generic types of twisted-pair cable.&nbsp;&nbsp;
-Use these values whenever the manufacturer of the cable is unknown, or the link is composed of diferent brands of cable.
+Standards stipulate that NVP must be specified at 10MHz signal at 20°C (68°F).
+(Source: [https://www.flukenetworks.com Fluke Networks])
+{| align="center" border="2" cellpadding="1" cellspacing="1" style="width: 500px;"
+|-
+! scope="col" | Category
+! scope="col" | U/UTP
+! scope="col" | U/FTP
+! scope="col" | F/UTP
+! scope="col" | S/FTP
+|-
+| 5e
+| 69
+| -
+| 69
+| -
+|-
+| 6
+| 69
+| 74
+| 70
+| -
+|-
+| 6A
+| 68.2
+| 74
+| 74
+| 77
+|-
+| 7
+| -
+| -
+| -
+| 78
+|-
+| 7A
+| -
+| -
+| -
+| 78
+|-
+| 8
+| -
+| -
+| -
+|
+|}
+&nbsp;