AXT Testing Preparation
Even though Leviton does not require field AXT testing for its Cat 6A
solutions, you may still be required to perform this testing. Read project
specifications carefully to determine if they call for field AXT testing.
If they do, ask for a waiver based on the proven performance of Leviton’s
Cat 6A solutions. If the customer won’t grant a waiver, you’ll need
to perform the testing.
TECH TIP: Is AXT Testing Required?
AXT testing measures the unwanted noise coupled to the cable being tested (called the “Victim”
or “Disturbed”) by surrounding cables (called “Disturbers”). Two tests need to be performed: the Power
Sum Alien Near-end Crosstalk (PSANEXT) test and the Power Sum Alien Attenuation-to-Crosstalk Ratio,
Far-end (PSAACRF) test. Results for the remaining AXT tests are taken as part of these two, so although
they are not directly provided, a “pass” result for PSANEXT and PSAACRF ensures passing results for AACRF,
AFEXT, ANEXT, and PSAFEXT. A 2% sample of the installed cables is typically recommended.
• AXT tests are time-consuming: budget AXT test time into your bid
• Handheld test instruments (field testers) require an additional AXT module
• A laptop computer is also typically used with the field tester
• The field tester’s AXT application software must be loaded onto the laptop
• Installation personnel will require training prior to performing AXT testing
Leviton Network Solutions
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(800) 722 2082
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+1 (425) 486 2222
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leviton.com/ns 53
Cat 6A Testing Preparation
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