Test-Um VALIDATOR-NT NT955 User Manual

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

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 -- --

-- --

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

Running Manual Tests