Chapter 10 339
CDMA Digital Modulation
IS-95A Modulation
Applying Changes to an Active CDMA State
If the CDMA format is currently in use (CDMA Off On set to On) while changes are made in the CDMA
Channel Setup table editor, you must apply the changes before the updated waveform will be generated.
From the CDMA Channel Setup table editor, press the following keys to apply the changes and generate a
new user-defined CDMA waveform based on the updated values:
Return > Apply Channel Setup.
To store a custom CDMA state file, refer to “Storing a Component Test Waveform to Memory” on page 316.
To recall a custom CDMA state file, refer to “Recalling a Component Test Waveform” on page 317.
Creating a User-Defined Multicarrier CDMA State
In this procedure, you learn how to customize a predefined multicarrier CDMA setup. Rather than building a
4-carrier setup one carrier at a time, you start with a predefined 3-carrier CDMA setup and modify the setup
by adding an additional carrier and changing some of the default values.
This section teaches you how to perform the following tasks:
• “Selecting a Multicarrier CDMA Setup” on page 339
• “Adding a Carrier” on page 339
• “Modifying Carrier Frequency Offset” on page 340
• “Modifying Carrier Power” on page 340
• “Generating the Waveform” on page 340
• “Configuring the RF Output” on page 341
Selecting a Multicarrier CDMA Setup
1. Press
Preset.
2. Press
Mode > CDMA > Arb IS-95A.
3. Press
Multicarrier Off On > Multicarrier Define.
Adding a Carrier
1. Highlight the 9 channel forward carrier in table row 2.
2. Press
Insert Row > Pilot > Return.
To Next Page
Loading...
Need help?
General
