User guide

OMNIScanner User Guide

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Press (Set Default) to select the cable to be tested.

Selecting the correct cable type will ensure accurate length measurements.

If you cannot find or do not know the name of your cable manufacturer,

simply select a cable from the Category folder, or create a new cable

(see

below)

Press (Delete) to permanently remove a

custom cable.

Note: Default cables cannot be

removed.

With a twisted pair cable highlighted, press

(Edit) to edit an existing custom cable. Cable

Name, NVP, or Impedance can be changed.

Note:

Default cables cannot be edited.

With a twisted pair cable highlighted, press

(New) to create a new cable based on the

NVP and Impedance values of the highlighted cable.

Name, NVP, and Impedance are definable.

Note: A new or edited cable will be saved in the

Custom Cables folder.

For an accurate Length test, the NVP (Nominal Velocity of Propagation)

must be set correctly. The value is usually specified by the cable vendor,

and OMNI

Scanner

has a large library of cables with the manufacturer’s

specified NVP.

To determine the NVP of a cable with a known length, press

(Measure) to capture the length of the cable using the displayed NVP. Use

the ê to highlight the NVP: field and press ENTER. Use the é or ê arrow

key to increase or decrease the value by 1% (percent) and adjust the NVP.

The Length: changes accordingly.

Note: The known cable must have a length of at least 50 feet or 15 meters.

To change the Impedance; use the ê to highlight the field and press

ENTER. Use the é or ê arrow key to select the appropriate Impedance in

W (Ohms) from the predefined list.

To setup whether or not the cable is shielded, use the ê to highlight

Shield: and press ENTER. Use the é or ê arrow key to make the appro-

priate selection. If ‘Yes’ is selected, the wiring for the shield will be mea-