R&S FSH Digital Modulation Analyzer
Measurements on TD-SCDMA Signals
Operating Manual 1173.6275.12 - 30 305
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 in the "Scrambling Code" category.
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.
9.7.6.3 Selecting the Maximum Number of Users
The TD-SCDMA standard allows the assignment of resources to a variable number of
users (2, 4, 6, 8, 10, 12, 14 or 16). The maximum number of users is determined by the
number of midamble shifts K in a particular time slot.
You can enter the number of midamble shifts manually or let the R&S FSH
automatically determine the number of midamble shifts.
Defining the number of users manually
► Press the MEAS key.
► Press the "Signal Settings" softkey.
► Select the "Set K Manually…" menu item.
► Enter the maximum number of allowed users.
Performing a search for the current number of users
If you don't know the number of users currently served, the R&S FSH is able to
determine the supported number of users by itself.
► Press the MEAS key.
► Press the "Signal Settings" softkey.
► Select the "[ ] Auto" menu item in the "Maximum Users (K)" category.
With each sweep, the R&S FSH starts a search for the supported maximum
number of users.
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