Fluke Series II - Manual (Page 57)

OneTouch Series II
Users Manual
4-8
The Network Assistant is preprogrammed with typical NVP
values for CAT 3, 4, and 5 UTP cable. In addition, there
are two user-definable Cable Types for you to enter your
own NVP values.
Cable Termination
In addition to determining cable length, the TDR technique
provides information on the kind of termination at the far
end of the cable and the cable’s characteristic impedance.
The Network Assistant examines the polarity of the
reflected pulse to determine if the cable end is an open or
short, as shown in Figure 4-6. If the wire pair is perfectly
terminated there is no reflection.