Working With Modulation Types; To Select A Predefined Modulation Type - Agilent Technologies E8247C PSG CW User Manual

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
Mod On Off
the hardkey is on.
Custom Off On
When the
• 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
for information on selecting a data pattern).
In Custom Real Time I/Q, you can also:
• Create user-defined modulation type (see
Memory Catalog.
• Restore all modulation parameters to their default state.

To Select a Predefined Modulation Type

1. Press .
Preset
Mode Custom
2. Press >
or
Mode Custom Real Time I/Q Baseband
> >
3. Select one of the available modulation types.
NOTE
If you select
136
softkey is on:
page
ARB Waveform Generator
>
Modulation Type
>
QPSK and OQPSK
, you must make a specific selection from the menu that displays.
"Working with Data Patterns" on page 147
137) that can be used immediately or saved to the
Digital Mod Define Modulation Type
> >
Select
>
Select
>
Chapter 6