Vector Network Analyzer
R&S
®
FPC
177
User Manual 1178.4130.02 ─ 07
When you evaluate the electrical length, you can define an additional offset for the
electrical length to be considered in the measurement.
4. Select the "Length Offset" menu item.
5. Define an offset as necessary.
18.1.6
DTF Configuration
Access
: "Meas" > "DTF Config"
For valid measurement results, you need to specify the characteristics of the cable
under test like model or frequency range.
Remote commands to configure the bandwidth:
●
Chapter 19.16.1.2, "DTF Configuration"
18.1.6.1
Cable Models
To determine the speed of propagation, and therefore the precise distance to any
faults, you have to specify the cable model that you want to test.
The R&S
FPC already comes with an assortment of predefined cable models that you
can use without doing anything. If you want to test a cable that is not listed, you can
also define custom cable models. You can do so either directly on the R&S
FPC or with
the "Cable Model Editor" of the R&S
InstrumentView software package.
Selecting a predefined cable model
1. Press the "Meas" key to open the measurement menu.
2. Select the "DTF Config" menu item to open the DTF configuration.
3. Select the "Select Cable Model" menu item.
The R&S
FPC opens a dialog box to select the cable model.
4. Select the cable model you are testing from the list.
5. Confirm the selection with the "Load" menu item.
The R&S
FPC shows the currently selected cable model in the diagram header.
Measurements and Result Displays
