Custom Arb Waveform Generator

Working with Modulation Types

Working with Modulation Types

The Modulation Type menu enables you to specify the type of modulation applied to the carrier signal when the Mod On Off hardkey is on.

When the Custom Off On softkey is on:

For Custom Arb, the BBG creates a sampled version of the I/Q waveform based on a random data pattern and the modulation type that has been selected.

For Custom Real Time I/Q, the real-time custom I/Q symbol builder creates I/Q symbols based on the data pattern and modulation type that has been selected (see “Working with Data Patterns” on page 147 for information on selecting a data pattern).

In Custom Real Time I/Q, you can also:

Create user-defined modulation type (see page 137) that can be used immediately or saved to the Memory Catalog.

Restore all modulation parameters to their default state.

To Select a Predefined Modulation Type

1.Press Preset.

2.Press Mode > Custom > ARB Waveform Generator > Digital Mod Define > Modulation Type > Select

or

Mode > Custom > Real Time I/Q Baseband > Modulation Type > Select

3.Select one of the available modulation types.

NOTE If you select QPSK and OQPSK, you must make a specific selection from the menu that displays.

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Chapter 6

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Agilent Technologies E8257C PSG, E8267C PSG manual Working with Modulation Types, To Select a Predefined Modulation Type

E8267C PSG, E8247C PSG CW, E8257C PSG specifications

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