Chapter 3 221
Mode
Distance To Fault
Mode
Distance To Fault
Distance to Fault Description
A signal is transmitted from the RF OUTPUT connector of the spectrum analyzer to the
cable-under-test. The signals reflected from faults in the cable are received by analyzer.
In performing this measurement, the analyzer uses frequency domain reflectometry. The
changing interference of the transmitted and reflected signals contains information about
the distance to one or more faults. This information can be used to find the physical
distance to the faults. The distance displayed on the analyzer is the physical distance to
the probable faults, corrected for the cable loss and velocity factor of the cable.
To configure measurement settings, select
Distance to Fault and then press Meas Setup.
Pressing
Control/Sweep enables you to restart a measurement, refer to “Control/Sweep” on
page 98.
AMPTD/Y Scale Menu
The following AMPTD/Y Scale keys are for setting up a Distance To Fault measurement.
The measurement must already be running to access these keys. Press
Meas, Distance To
Fault
to turn on the measurement.
Autoscale
Executes an automatic scaling of the
Reference Level setting. Autoscale is a GUI only
function and has no SCPI command.
Mode Stimulus / Response
State Saved Saved in instrument state.
Key Path
MEAS, Return loss
Mode Stimulus / Response
Key Path Front-panel key
Mode Stimulus/Response
Key Path
AMPTD Y Scale, Autoscale
To Next Page
Loading...
