Keysight Technologies N9321C, User Manual

Page: 82 / 220

Functions and Measurements
Reflection Measurement
74
Perform a DTF measurement
To make a DTF-return loss measurement over a frequency range of
50 to 400 MHz, perform the following steps:
1 Press the
MODE > Reflection Measurement > Distance To Fault
to
select the DTF mode.
2 Press
FREQ > Start > 50 > MHz
to set the start frequency to 50
MHz.
3 Press
Stop > 400 > MHz
to set the stop frequency to 400 MHz.
4 Press
Calibrate
to bring up the calibration process guidance.
Follow the instructions to perform a calibration. For more
information about calibration, refer to "Preparation" on page 72 .
5 Remove the calibrator and connect the cable under test (DUT)
to the RF OUT connector on the top panel of the tester.
The DTF measurement starts and the results are displayed on the
screen. A peak in the horizontal trace indicates a defective
location.