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Command Reference

Frequency Modulation Subsystem ([:SOURce])

Chapter 4 251

:FM[1]|2:SOURce

Supported PSG-A Series

[:SOURce]:FM[1]|2:SOURce INT[1]|INT2|EXT1|EXT2

[:SOURce]:FM[1]|2:SOURce?

This command sets the source to generate the frequency modulation.

INT This choice selects internal source 1 or 2 to provide an ac-coupled signal.

EXT This choice selects the EXT 1 INPUT or the EXT 2 INPUT connector to

provide an externally applied signal that can be ac- or dc-coupled.

*RST INT

Remarks The externally applied, ac-coupled input signal is tested for a voltage

level and a display annunciator will report a high or low condition if

that voltage is >

3% of 1 V

:FM[1]|2:STATe

Supported PSG-A Series

[:SOURce]:FM[1]|2:STATe ON|OFF|1|0

[:SOURce]:FM[1]|2:STATe?

This command enables or disables the frequency modulation for the selected path.

*RST 0

Key Entry

FM Off On

Remarks The RF carrier is modulated when you set the signal generator’s

modulation state to ON, see “:MODulation[:STATe]” on page 189 for

more information.

Whenever frequency modulation is enabled, the FM annunciator is

turned on in the display

The two paths for frequency modulation can be simultaneously

enabled. Refer to “:FM[1]|2...” on page 244 for more information.

Choices INT[1] INT2 EXT1 EXT2

Key Entry

Internal 1 Internal 2 Ext1 Ext2

Choices ON OFF 1 0

1 2 ... 260 261 262 263 264 265 266 267 268 269 270 ... 361 362

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Agilent Technologies PSG Manual de Instruções Página 265