Test-Um VALIDATOR-NT NT955 - Manual (Page 60)

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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 TM How AutoTest Works