S331L UG PN: 10580-00321 Rev. M 3-9
Cable and Antenna Measurements 3-4 Line Sweep Measurements
3-4 Line Sweep Measurements
To verify the performance of the transmission feed line system and
analyze typical problems, three types of line sweeps can be performed:
• Return Loss
• Cable Loss
• Distance-To-Fault
Return Loss/VSWR Measurement
This is a measurement made when the antenna is connected at the end
of the transmission line. It provides an analysis of how the various
components of the system are interacting.
Note
Anritsu recommends allowing the S331L to warm up for
5 minutes to typical operation temperature before calibrating.
The instrument will require a new OSL calibration if the
internal instrument temperature changes more than 20 ºC
after calibration.
Note
Anritsu recommends using a phase-stable test port cable,
attached to the Site Master RF port. Calibrate at the open end
of the cable.
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