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320 Agilent X-Series Signal Generators SCPI Command Reference

Arb Commands

Multitone Subsystem–N5172B/82B ([:SOURce]:RADio:MTONe:ARB)

In the CARRier control mode, this will adjust the carrier power once for the specified total noise

power level, after which the total noise power could change if any noise parameters are adjusted or

the carrier power is adjusted. See also :NOISe:POWer:CONTrol[:MODE] command.

Range The range varies based on the bounds of the total power that results from the

noise settings.

Default The appropriate value given the current total power and the current Carrier to

Noise (C/N).

Key Entry Total Noise Power

:NOISe[:STATe]

Supported N5172B/82B with Option 403

[:SOURce]:RADio:MTONe:ARB:NOISe[:STATe] ON|OFF|1|0

[:SOURce]:RADio:MTONe:ARB:NOISe[:STATe]?

This command enables the Multi- Tone modulation mode.

To configure the AWGN, refer to the following sections located in the multitone subsystem:

• To set the AWGN noise bandwidth, refer to “:NOISe:BANDwidth” on page 315.

• To set the bandwidth over which the noise power is integrated for calculating the carrier to noise

ratio, refer to“:NOISe:CBWidth” on page 316.

• To set the carrier to noise ratio as the active function, refer to “:NOISe:CN” on page 316.

*RST Off

Key Entry Real-Time AWGN Off On

:PHASe:NOISe:F1

Supported N5172B/82B with Option 432

[:SOURce]:RADio:MTONe:ARB:PHASe:NOISe:F1 <value><unit>

[:SOURce]:RADio:MTONe:ARB:PHASe:NOISe:F1?

This command sets the start frequency value of the flat area for the phase noise impairment.

Ensure that this value is less than or equal to the stop frequency value (see :PHASe:NOISe:F2). If the

value is set greater than the stop frequency value, the signal generator resets the stop value to equal

the start value.

The actual value may vary logarithmically depending on the value of the stop frequency. This

behavior is more noticeable at higher frequency values. For more information, see the User’s Guide.

*RST +1.00000000E003

Range 0 Hz to 77.50052449 MHz

Key Entry Desired Start Freq (f1)

Agilent Technologies N5171B User Manual

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