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ONX-220 User's Guide
22135173, Rev. 000 June 2020 190
Chapter 11 Test Results
Cable Fault Finder results
Drop Check
The Cable Fault Finder, Drop Check results screen displays
a graph of the maximum reflection detected and will
continuously update to show any adjustments as they are
performed.
The Cable Fault Finder is intended to troubleshoot home
coax networks and automatically identifies any reflections
greater than -25dBrl
y
If only 1 reflection is > -25dBrl, then Cable integrity
passes
y
If 2 or more reflections are > -25dBrl, then Cable
integrity fails
Cable Length
The Cable Length screen shows the distance of any coax
cable.
The cable length measurement is determined by:
y
First, identifying the amplitude and distance to the
largest reflection
y
When additional reflections are found beyond
the distance to the largest reflection and their
amplitude;
y
IS NOT within 7.5 dB of the largest reflection,
the distance to the largest reflection will be
marked as the end of the cable
y
IS within 7.5 dB of the largest reflection, the
distance to the furthest reflection that meets
this criteria will be marked as the length to
the end of the cable