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Test-Um NT955 Series
Testing Cable Length
When you run Cable Test, length is reported in feet or meters. In
addition, the Manual Cable Test for data includes a quick independent
length test using the Length (F1) soft key. This test is useful to the
installer to determine how much cable is left on the reel or the length
of a cable run. Follow the procedure for Cable Tests described above.
(Figure 5.7)
1. Select Manual Tests. Choose Data, Phone or 2-wire cable type.
2. The Manual Test Menu for the cable type you selected displays.
3. Using the right arrow key, select Cable Test.
4. The pF+ (F1) and pF- (F2) soft keys adjust the length constant in
pico farads per unit length if the cable requires a different setting
than that displayed at the top of the screen.
5. Select the Length (F1) soft key.
6. The length of the cable pairs tested displays, as well as any
associated errors.
Wiremap - DATA
Untitled1.job
Results Length Skew SNR
34ft
34ft
33ft
34ft
1 1
2 2
3 3
6 6
4 4
5 5
7 7
8 8
S S
Remote ID: 1 Length Constant: 15 PF/ft.
A -- --
B -- --
C -- --
D -- --
Up and Down controls Length Constant
LENGTH
Test-Um Inc.
validator
2005 Aug 25
10:53:01
100%
Figure 5.7 Testing Cable Length
Validator
TM
Running Manual Tests