Viavi ONX-220, Руководство пользователя

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ONX-220 User's Guide
22135173, Rev. 000 June 2020 92
Chapter 4 CATV Testing
Results
For a detailed discussion of the results produced by this test, see
"HL Leakage results"
on page 193 .
Additional notes for leakage monitoring in the home
y
Enter home and walk through each room with RF cabling. Include basements,
crawl spaces, attics and rooms with CPE devices.
y
If leak above squelch setting is detected, meter emits audible tone relative to
detected leak size and displays leak level.
y
Once leak is detected, move meter side-to-side through room to determine
direction of highest leak level. When maximum leak level is determined, the leak
source has been located:
y
If leak level is too high, remove dual band antenna and attach near field
probe.
y
If leak is too high with near field probe, change transmitter to low level
mode (+40 dBmV/+100 dBμV) and re-check.
y
Repair, tighten or replace leaking component.
y
Recheck room to ensure all leak sources have been addressed and repaired.
y
Move to remaining rooms to continue locating leaks.