Technical data

Chapter 10 293
Distance to Fault
Measuring Distance to Fault
Distance to Fault
necessarily indicate a problem, but be sure that the connection is tight and clean.
Setting Interference Rejection for a Distance to Fault
Measurement
Other signals can interfere with distance to fault measurements. When making a
distance to fault measurement in the presence of known or suspected interference,
you can minimize the effect of the interference on the measurement by activating
interference rejection in the test set.
NOTE Use of interference rejection will increase the measurement time. Interference
rejection should be used if a known interfering signal exists or if the distance to fault
measurement displays suspicious characteristics such as a spike or rapid movements
in the noise floor.
To Activate Interference Rejection:
Step Notes
1[Setup]
2 On [Fault Indicators] select
On.
Each time you press this softkey, the selected
option changes. When set to On, the positions of
the top four faults are indicated on the trace with
four numbered yellow triangles. If you have
Pass/Fail Limits set to On, the yellow triangles
will be colored red for any faults that exceed
your pre-defined limit. For more information on
setting Pass/Fail limits, see “Setting the Pass/Fail
Limits” on page 297.
Step Notes
1[Setup]
2 On [Interference
Rejection] select
On.
Each time you press this softkey, the selected
option changes.