34 Agilent N5181A/82A MXG Signal Generators User’s Guide
Basic Operation
Modulating the Carrier Signal
Modulating the Carrier Signal
To modulate the carrier signal, you must have both
• an active modulation format
and
• modulation of the RF output enabled
Example
1. Preset the signal generator.
2. Turn on AM modulation: Press AM > AM Off On (requires Option UNT).
You can turn on the modulation format before or after setting signal parameters.
The modulation format generates, but does not yet modulate the carrier signal.
Once the signal generates, an annunciator showing the name of the format appears, indicating
that a modulation format is active.
3. Enable modulation of the RF output: Press the Mod On/Off key until the LED lights.
If you enable modulation without an active modulation format, the carrier signal does not
modulate until you subsequently turn on a modulation format.
NOTE To turn modulation off, press the Mod On/Off key until the LED turns off.
When the Mod On/Off key is off, the carrier signal is not modulated, even with an active
modulation format.
4. To make the modulated carrier available at the RF output connector, press the RF On/Off key until
the LED lights.
See also: “Using Analog Modulation (Option UNT Only)” on page 53
“Using Pulse Modulation (Option UNU)” on page 57
“I/Q Modulation” on page 121
Annunciator indicates active AM modulation
AM modulation format on.
A lit LED indicates that any
active modulation format can
modulate the carrier.
To Next Page
Loading...
Need help?
General
