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Agilent X-Series Signal Generators SCPI Command Reference 311

Arb Commands

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

Creating a Multitone Waveform

Use the following steps to create a multitone waveform:

1. Initialize the phase for the multitone waveform. Refer to “:SETup:TABLe:PHASe:INITialize” on

page 325.

2. Assign the frequency spacing between the tones. Refer to “:SETup:TABLe:FSPacing” on page 325.

3. Define the number of tones within the waveform. Refer to “:SETup:TABLe:NTONes” on page 325.

4. Modify the power level, phase, and state of any individual tones. Refer to “:SETup:TABLe:ROW” on

page 326.

:ALIGnment

Supported N5172B/82B

[:SOURce]:RADio:MTONe:ARB:ALIGnment LEFT|CENTer|RIGHt

[:SOURce]:RADio:MTONe:ARB:ALIGnment?

This command will align the multitones either left, center or right of the carrier frequency.

Example

:RAD:MTON:ARB:ALIG CENT

The preceding example aligns each of the multitones equidistant from the carrier frequency.

Key Entry Alignment Left Cent Right

:BASEband:FREQuency:OFFSet

Supported N5172B/82B

[:SOURce]:RADio:MTONe:ARB:BASeband:FREQuency:OFFSet <val><unit>

[:SOURce]:RADio:MTONe:ARB:BASeband:FREQuency:OFFSet?

This command offsets the baseband frequency relative to the carrier. The feature is useful for moving

the signal such that the carrier feed–through is not in the center.

The X- Series signal generator provides automatic DAC over–range protection when the offset value is

something other than 0 Hz. It scales down the playing I/Q data by 1/square root of 2.

*RST 0.000

Range +5.0E7 to –5.0E7 Hz

Key Entry Baseband Frequency Offset

:BASeband:FREQuency:OFFSet:PHASe:RESet

Supported N5172B/82B

[:SOURce]:RADio:MTONe:ARB:BASeband:FREQuency:OFFSet:PHASe:RESet

This command clears the phase accumulation and so zero phase shift.

Agilent Technologies N5171B User Manual

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