Agilent Technologies E8247C, Руководство пользователя

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120 Chapter 6
Custom Arb Waveform Generator
Overview
Overview
Custom Arb Waveform Generator mode can produce a single modulated carrier or multiple modulated
carriers. Each modulated carrier waveform must be calculated and generated before it can be output; this
signal generation occurs on the internal baseband generator (Option 002/602). Once a waveform has been
created, it can be stored and recalled which enables repeatable playback of test signals.
To begin using the Custom Arb Waveform Generator mode, select whether to create a single modulated
carrier or a multiple modulated carrier waveform:
• If you want to create a single modulated carrier waveform, start by selecting a Digital Modulation Setup
from a set of predefined modes (setups). Once a predefined mode is selected, you can modify the
Modulation Type, the Filter being used, the Symbol Rate, and the type of Triggering; the Data Pattern is
random by default. This modified setup can then be stored and reused.
• If you want to create a multiple modulated carrier waveform, start by selecting a Multicarrier Setup from
a set of predefined modes (setups). Once a predefined mode is selected, you can modify the number of
carriers to be created, the frequency spacing between each carrier, whether the phase offset between each
carrier is to be fixed or random, and the type of Triggering; the Data Pattern is random by default, the
Filter is set to 40 MHz by default, and the Symbol Rate is automatically specified by the selected
Modulation Type being used.