User`s guide

210 Chapter 8

CDMA Digital Modulation

cdma2000 Forward Link Modulation for Component Test

This section teaches you how to build forward link cdma2000 waveforms for testing

component designs. The waveforms are generated by the signal generator’s internal dual

arbitrary waveform generator.

Activating a Predefined CDMA Forward Link State

This procedure teaches you how to perform the following tasks:

• “Selecting a cdma2000 Forward Link Predefined Setup” on page 210

• “Generating the Waveform” on page 210

• “Configuring the RF Output” on page 210

Selecting a cdma2000 Forward Link Predefined Setup

1. Press

Preset.

2. Press

Mode > CDMA > Arb CDMA2000.

3. Press

CDMA2000 Select > Pilot.

This selects a pilot cdma2000 forward link waveform. The display changes to

FWD CDMA2000 Setup: SR1 Pilot. Forward link is the default setting for link direction, and

therefore does not need to be set.

Generating the Waveform

Press

CDMA Off On until On is highlighted.

This generates the predefined pilot CDMA forward link waveform. During waveform

generation, the CDMA and I/Q annunciators appear and the waveform is stored in volatile Arb

memory. The waveform is now modulating the RF carrier.

Configuring the RF Output

1. Set the RF output frequency to 2.17 GHz.

2. Set the output amplitude to

−10 dBm.

3. Press

RF On/Off until On is highlighted.

The predefined CDMA forward link signal is now available at the RF OUTPUT connector of

the signal generator.