Chapter 15 413
W-CDMA Digital Modulation for Component Test
W-CDMA Downlink Modulation
Creating a User-Defined W-CDMA Downlink State
This procedure teaches you how to perform the following tasks:
• “Selecting a W-CDMA Downlink Setup” on page 413
• “Editing Downlink Channel Parameters” on page 414
• “Inserting Additional Channels” on page 416
• “Clipping the Waveform” on page 416
• “Generating the Waveform” on page 417
• “Applying Channel Modifications to an Active Waveform” on page 417
• “Configuring the RF Output” on page 417
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 417.
Selecting a W-CDMA Downlink Setup
1. Press
Preset.
2. Press
Mode > W-CDMA > Arb W-CDMA.
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
channel (DPCH) with predefined parameters is the default setup. The horizontal scroll bar at the bottom of
the screen indicates that there are more columns to the right of the Scramble Code column. Use the front
panel knob or right arrow key to move the cursor to view the additional columns.
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