R&S FSH Digital Modulation Analyzer
Measurements on 3GPP FDD Signals
Operating Manual 1173.6275.12 - 30 270
Performing a search for the scrambling code
If you don't know the scrambling code, the R&S FSH is able to determine the
scrambling code of one or more 3GPP base stations by itself.
► Press the MEAS key.
► Press the "Signal Settings" softkey.
► Select the "[ ] Auto" menu item.
With each sweep, the R&S FSH starts a search for the scrambling code. If it finds
the code, the synchronization will be successful. If not, the synchronization fails.
The R&S FSH shows a corresponding message ( ).
Comparing the power of multiple scrambling codes
You can also view the scrambling codes and their power graphically.
► Press the MEAS key.
► Press the "Result Display" softkey.
► Select the "Scrambling Code"
menu item.
The R&S FSH shows all primary
and corresponding secondary
scrambling codes that it has found
during the search in descending
order regarding the power level.
In addition, the R&S FSH shows the power of the common pilot channels (CPICH)
belonging to the scrambling code. You can see the power in numerical form in a
table above the diagram area and in graphical form.
Trace modes
Note that the PN Scanner supports several trace modes.
If you are using a trace mode other than Clear / Write, the bars depicting the
scrambling codes may turn grey. A grey color indicates time periods during which no
scrambling codes can be found.
For more information on the trace modes see "Selecting the Trace Mode" on page 111.
To Next Page
Loading...
