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Viavi OneExpert ONX CATV User Manual page 109

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The Home Cable Network and Ingress Challenge
Latent issues in home network, undetected with source not present at time of test. No way to ensure that tech is
Problem
performing pressure test.
Generic
Need to perform test that reveals network issues (pressure test) and establish method to verify test performance.
Solution
Home Leakage Test Kit and HL test built-into OneCheck; simple method to pressure test, and to verify that test is
VIAVI
Solution
being performed. Enables tech to find points of failure, saving time vs trial-and-error methods.
Tighter home network meets shielding requirements of today's high tech world, higher reliability, fewer service calls,
Benefit
happier customers, lower operating expense, higher profitability, no extra meter to carry
Ambient RF noise in the home caused by a variety of things, including but not limited to cell phones (LTE signals).
LTE is very bursty and strong – varying frequencies across the band that are constantly changing in power and modulation. It uses Downlink
OFDMA – Uplink SC-FDMA Modulation and it dynamically shifts the modulation scheme based on quality of signal from QPSK to 16 QAM to
64 QAM, respectively.
Ingress enters home network where shielding integrity has been compromised
Old unshielded devices, connectors, loose connections, damaged cable
Ingress disrupts service and can occur intermittently
Without an effective way to test for it, there will be service calls
Potential service disruption for multiple customers on affected node
Leaks are potential points of ingress
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© 2020 VIAVI Solutions Inc.

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