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Agilent X-Series Signal Generators SCPI Command Reference 313

Arb Commands

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

This command enables or disables the I/Q attenuation auto mode.

ON (1) This choice enables the attenuation auto mode which optimizes the modulator

attenuation for the current conditions.

OFF (0) This choice holds the attenuator at its current setting or at a selected value. Refer

to the :IQ:MODulation:ATTen command for setting the attenuation value.

*RST 1

Key Entry Modulator Atten Manual Auto

:MDEStination:AAMPlitude

Supported N5172B/82B

[:SOURce]:RADio:MTONe:ARB:MDEStination:AAMPlitude NONE|M1|M2|M3|M4

[:SOURce]:RADio:MTONe:ARB:MDEStination:AAMPlitude?

This command routes the selected marker to the Alternate Amplitude function. The NONE parameter

clears the marker for the Alternate Amplitude function.

*RST

NONE

:MDEStination:ALCHold

Supported N5172B/82B

CAUTION Incorrect automatic level control (ALC) sampling can create a sudden unleveled

condition that may create a spike in the RF output potentially damaging a DUT or

connected instrument. Ensure that you set markers to let the ALC sample over an

amplitude that accounts for the high power levels within the signal.

[:SOURce]:RADio:MTONe:ARB:MDEStination:ALCHold NONE|M1|M2|M3|M4

[:SOURce]:RADio:MTONe:ARB:MDEStination:ALCHold?

This command enables the marker ALC hold function for the selected marker. For setting markers,

see “:MARKer[:SET]” on page 283.

Use the ALC hold function when you have a waveform signal that incorporates idle periods, or when

the increased dynamic range encountered with RF blanking is not desired. The ALC leveling circuitry

responds to the marker signal during the marker pulse (marker signal high), averaging the modulated

signal level during this period.

The ALC hold function operates during the low periods of the marker signal. The marker polarity

determines when the marker signal is high. For a positive polarity, this is during the marker points.

For a negative polarity, this is when there are no marker points. For setting a marker’s polarity, see

:MPOLarity:MARKer1|2|3|4.

NOTE Do not use the ALC hold for more than 100 ms, because it can affect the waveform’s output

amplitude.

Key Entry None Marker 1 Marker 2 Marker 3 Marker 4

Agilent Technologies N5171B User Manual

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