Test-Um VALIDATOR-NT NT955 User Manual

Test-Um NT955 Series
4.4. Custom Cable Definitions

The Custom Cable Definitions screen shows all defined cable types

loaded into the Validator-NT from the current job and what category

of test is performed on each type. The soft keys, F1 thru F3, allow for

adding, editing, and deleting cable information. (Figure 4.10)

The recommended procedure is to create Custom Cable Definitions in

Plan-Um and upload them to Validator-NT. However, by following the

steps outlined below you can also create Custom Cable Definitions and

Save them directly in your Validator-NT.

Custom Cable Types will only be saved to the current job unless you

create a Template File to store and retrieve this information.

1. Select

Auto Test from the Start screen. Select Custom Cable

Definitions.

2. Modify a default cable type or select New using the soft keys.

Select Cable Type: Data, Phone, or 2-wire.

3. To create a New Custom Cable Definition, use the alphanumeric

keypad to enter the information into each field. Press Accept

when you are finished entering data into each field and to

advance to the next field. You may also use the arrow keys on

your keypad to navigate between fields. Backspace and Delete

soft keys are provided to facilitate editing of information.

4. To edit an existing cable definition, use the alphanumeric keypad

to modify the test parameters in each field. Press Accept or use

the arrow keys to advance to the next field.

5. Length constant is used to calculate length measurements and

may be adjusted for custom cable types depending upon their

capacitance rating. Figure 5.1 displays typical cable length

parameters.

6. Typical settings for custom cable types will include a Minimum

SNR of 20 dB and Maximum SKEW of 35 nanoseconds on

Ethernet cable rated for gigabit speed.

7. Wire Mapping, Pair Polarities, and Split Test selections are

available using the drop down menus.

Validator

How AutoTest Works