R&S FSH
Distance-to-Fault Mode (R&S FSH-K41)
Performing Cable and Antenna Measurements
Operating Manual 1173.6275.12 - 30
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7.1.5 Calibrating Measurements
To get the best and most accurate results, you have to calibrate the measurement. The
R&S FSH provides several calibration methods. You will need one of the available
calibration standards R&S FSH-Z28, -Z29 (order no. 1300.7804.03 and 1300.7504.03)
or R&S ZV-Z121 (order no. 1164.0496.02/.03).
To successfully calibrate the test setup, you have to connect the calibration standard at
the reference plane, usually the output of the RF measurement cable.
Calibration is performed over the R&S FSH's entire frequency range (full span). This
eliminates the need for recalibration when you change a parameter or select a different
cable or DUT.
Calibration also remains valid after turning off the R&S FSH or changing into another
operating mode as calibration data is saved in the internal memory of the R&S FSH. If
you save the measurement in a dataset, calibration data is part of that dataset. When
you restore the dataset and perform the same measurement again, you do not have to
recalibrate the R&S FSH.
7.1.5.1 Calibration States
The calibration states are the same as for the network analyzer. For more information
see "
7.1.5.2 Calibration Methods
In distance-to-fault mode, the calibration method is a full 1-port calibration. For more
information see "
7.1.5.3 Performing a Full 2-Port Calibration
For a description of a complete calibration procedure see "
" on
page 184
