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1205CXB OPERATION MANUAL v1
© Copyright Radiodetection Ltd 2022
18
Typical waveforms
You will encounter a variety of waveforms during testing because
there is a huge number of different cable types
electrical and environmental conditions can change and affect TDR test results, and
you are likely to test cables with and without faults.
The following are examples of some waveforms that you may meet. Note that every circumstance is
different so these are typical examples and may not match exactly what you see.
Open circuit
A reflection with the same polarity as the launch pulse
indicates a fault with high impedance characteristics.
The reflection shown at
Cursor 2
is a complete open at
99.67m
Short circuit
A negative or downward reflection indicates a fault
with low impedance characteristics. The reflection
shown at
Cursor 2
is a dead short at 330.42ft
Cable joint
This cable has a joint or splice 19.61m from the near
end of the cable. The visibility of a splice will depend
on the quality of the splice and the distance away
from the 1205CXB
Wet splice or joint
This is a typical reflection from a wet splice or joint
99.67m
Far end
of cable
330.42ft
Far end
of cable
19.61m
Far end
of cable
213.5ft
Wet
splice