Versiv Series Cabling Certification Product Family
Technical Reference Handbook
570
5 On the NEW CUSTOM CABLE screen, tap Enter New Cable
Name, use the keyboard to enter a name, then tap DONE.
6 On the NEW CUSTOM CABLE screen, tap the panel under Use
default values from:, then select a cable type to use for
default values for your custom cable.
7 On the NEW CUSTOM CABLE screen, tap the NVP panel to
change the NVP value if necessary. See the next section for
instructions.
8 When you have entered all necessary values, tap SAVE on the
NEW CUSTOM CABLE screen. The tester adds an asterisk (*) to
the start and end of the custom cable name.
9 To use the custom cable type, tap it on the CABLE TYPE
screen.
Change the NVP
The tester uses an NVP value (nominal velocity of propagation)
and the signal delay through a cable to calculate the length of
copper cabling.
The default value specified by the selected cable type is the
typical NVP for that cable type. The default value is usually
accurate enough for cable certification tests. To increase the
accuracy of length measurements you can adjust the NVP to a
specified or actual value.
Note
NVP values can be different among cable types,
lots, and manufacturers. Usually, these differences
are not large enough to change the PASS/FAIL
result of the length test.
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