R&S FSH
Network Analyzer Mode
Working with Maps
Operating Manual 1173.6275.12 - 30
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6
Network Analyzer Mode
The network analyzer mode provides the functionality to characterize networks with
one or two ports.
To enable the features of the network analyzer mode, you need at least an R&S FSH
with tracking generator or one that also has an internal VSWR bridge.
Scalar measurements
In its basic configuration, an R&S FSH with tracking generator can only perform scalar
measurements and determine the reflection or reverse transmission characteristics of
the device under test (DUT). However, scalar measurements determine the magnitude
of the transmitted or reflected power only.
Measurements yield the best results when you calibrate the R&S FSH to the test
setup. Although the accuracy of measurements is high in the default factory calibration,
the R&S FSH also provides all necessary calibration methods to correct the magnitude
for these kinds of measurements and make results even more accurate.
If the R&S FSH also has an internal VSWR bridge, the R&S FSH can also determine
the reflection on either port or the forward transmission characteristics. The VSWR
bridge enables the R&S FSH to switch the tracking generator to each of the
measurement ports (ports 1 and 2) and can therefore send signals from port 2 to port 1
and vice versa.
Vector measurements
To increase the dynamic range and measurement accuracy, you can equip the
R&S FSH with firmware option R&S FSH-K42 (order no. 1304.5629.02). This enables
vector measurements for the network analyzer operating mode. Note that vector
measurements are only possible with models that feature tracking generator and
VSWR bridge.
In addition to be able to determine the magnitude and phase characteristics of a DUT,
the option also features additional calibration methods and measurement functionality
and formats (e.g. group delay or phase).
► Press the MODE key.
► Press the "Network Analyzer" softkey.
The R&S FSH turns on the tracking generator. Frequency and level settings are
inherited from the previous operating mode.
