Keysight Technologies N9321C, User Manual

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Functions and Measurements
Reflection Measurement
72
Reflection Measurement
Press
MODE > Reflection Measurement
to access the cable and
antenna measurement submenu. There are three different
measurement modes for your selection:
• Reflection measurement
• One port cable loss
• Distance to fault
Preparation
Before making a measurement in a specific mode, the HSA requires
a calibration to make sure the measurement accuracy. A new
calibration must be performed if any components used in the
calibration setup are changed. For example, a short coaxial cable
used to connect the tester to the DUT
Press
Frequency
and
Span
to set the measurement frequency range.
It is best to keep the calibration frequency range as close as
possible to the actual sweep frequencies necessary for the
measurements. Calibrating over a larger frequency range than the
actual measurement range will reduce the accuracy of the test
results.
Calibrate with a T-combo calibrator
T-combo calibrator
This is a T-shaped mechanical calibrator. It
consists of a calibrated open, short and 50

load. Using the
T-combo calibrator will result in a more accurate calibration than
when using the an electronic calibrator.
Using a T-combo calibrator is a three step process requiring the
user to manually change the open-short-load components. The
default order of the calibration process is open-short-load.
1 Press
Frequency > Calibrate
to bring up the dialog box for
calibration instruction. Follow the on-screen instruction to