R&S FSH Digital Modulation Analyzer
Measurements on 3GPP FDD Signals
Operating Manual 1173.6275.12 - 30 269
9.4.4 Configuring the Measurement
Some of the results depend on the measurement configuration.
9.4.4.1 Selecting the Analysis Length
The R&S FSH allows you to analyze one slot only, or a complete WCDMA frame
(which is made up out of 15 slots).
► Press the MEAS key.
► Press the "Display Settings" softkey.
► Select the "One Slot" or "One Frame" menu item.
The R&S FSH analyzes the slot or frame, depending on your selection. The results
are updated accordingly.
Defining the scope of the frequency error
In case of the frequency error, you can display the results on a frame or slot basis,
regardless of the selected analysis length.
► Press the MEAS key.
► Press the "Display Settings" softkey.
► Select the "Slot" or "Frame" menu item (→ Carrier Freq Error Meas Range).
The R&S FSH updates the frequency error accordingly.
9.4.4.2 Specifying the Scrambling Code
To demodulate a 3GPP signal, you have to know the primary and secondary
scrambling codes of the base station you are testing. You can enter the scrambling
code manually or let the R&S FSH automatically find the right scrambling code(s).
Defining the scrambling code manually
► Press the MEAS key.
► Press the "Signal Settings" softkey.
► Select the "Primary Code…" or "Secondary Code…" menu item.
► Enter the primary or secondary scrambling code of the base station you are
testing.
In most cases, the secondary scrambling code has the value '0'.
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