Agilent Technologies ESG Betriebsanweisung Seite 257

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Chapter 8 241
CDMA Digital Modulation
IS-95A Modulation
The custom CDMA signal is now available at the RF OUTPUT connector.
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 218.
To recall a custom CDMA state file, refer to “Recalling a Component Test Waveform” on
page 219.
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 241
Adding a Carrier” on page 242
“Modifying Carrier Frequency Offset” on page 242
“Modifying Carrier Power” on page 242
“Generating the Waveform” on page 242
“Configuring the RF Output” on page 243
Selecting a Multicarrier CDMA Setup
1. Press
Preset.
2. Press
Mode > CDMA > Arb IS-95A.
3. Press
Multicarrier Off On > Multicarrier Define.
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