
Chapter 14 335
W-CDMA Downlink Digital Modulation for Receiver Test
Using W-CDMA Downlink
Notice that with the personality already turned on, as soon as a data channel parameter is
changed, the Apply Needed annunciator appears (see Figure 14-6). This indicates that the
new setting has not yet taken effect in the active baseband signal.
Figure 14-6 Display Indicates that Apply is Needed
5. Press
Apply Channel Setup.
The new setting to the DPCH data channel is now applied to the baseband signal. Notice also
that the Apply Needed annunciator is replaced with Apply Completed.
Configuring the RF Output
The steps in this procedure build upon the previous procedure.
1. Set the RF output frequency to 2.11 GHz.
2. Set the output amplitude to
−10 dBm.
3. Press
RF On/Off to On.
The user-defined, real-time downlink W-CDMA signal is now available at the RF OUTPUT
connector of the signal generator.
To store this real-time I/Q baseband digital modulation state to the instrument state register,
see “Saving an Instrument State” on page 55.
To recall a real-time I/Q baseband digital modulation state, see “Recalling an Instrument
State” on page 56.
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