User`s guide

Chapter 13 307
W-CDMA Digital Modulation for Component Test
W-CDMA Uplink Modulation
Creating a User-Defined W-CDMA Uplink State
This procedure teaches you how to perform the following tasks:
• “Selecting a W-CDMA Uplink Setup” on page 307
• “Editing Uplink Channel Parameters” on page 308
• “Inserting Additional Channels and Modifying I/Q Settings” on page 308
• “Clipping the Waveform” on page 309
• “Generating the Waveform” on page 309
• “Applying Channel Modifications to an Active Waveform” on page 310
• “Configuring the RF Output” on page 310
CAUTION Unless previously saved to the signal generator’s non-volatile memory,
modifications made to predefined channel configurations are lost when changes
are made to link direction.
To store a custom W-CDMA state, see “Storing a W-CDMA Downlink/Uplink
State” on page 299.
Selecting a W-CDMA Uplink Setup
1. Press
Preset.
2. Press
Mode > W-CDMA > Arb W-CDMA > Link Down Up.
3. Press
W-CDMA Define > Edit Channel Setup.
The channel table editor is now displayed, as shown in the following figure. Notice that a
dedicated physical control channel (DPCCH) with predefined parameters is the default
selection. The horizontal scroll bar at the bottom of the screen indicates that there are more
columns to the right of the Data column. Use the front panel knob or right arrow key to move
the cursor to view the additional columns.