Technical data

Chapter 2 49
One Port Insertion Loss
Measuring One Port Insertion Loss
One Port Insertion Loss
10 Check whether your analyzer has
already been calibrated over the
frequency range that you wish to
measure. If it is already calibrated
over the correct frequency range, you
can omit the next step (Step 11) and
go straight to Step 12.
The analyzer displays its calibration
status on the top left of the
measurement screen. You only need
to re calibrate if you:
• power off the test set
• change the start frequency to a
new value that lies below the start
frequency of your previous
calibration
• change the stop frequency to a
new value that lies above the stop
frequency of your previous
calibration
• change any of the jumper leads
that you used for the calibration
• change any of the attenuators that
you used for the calibration
• change the type of cable specified
under the [Cable Type] menu key
in the Distance to Fault
measurement.
For more information, see
“Calibration - Minimizing your
Workload” on page 46.
11 If your analyzer is uncalibrated, or
has been calibrated over an
unsuitable frequency, press
[Calibrate]
Follow the instructions of the
Calibration Wizard. The test set will
calibrate over the desired frequency
range.
12 Connect the antenna feedline and
antenna.
Connect the antenna feedline cable to
the RFout/SWR port.
Step Notes