RF:Attenuator Hold Enabled Property

NI RF Signal Generators Help (NI-RFSG 18.1)

Edition Date: June 2018
Part Number: 371025V-01
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Short Name: Attenuator Hold Enabled

Property of niRFSG

Enables or disables attenuator hold. While this property is set to TRUE, changing the power level causes NI-RFSG to scale the digital data sent to the AWG instead of adjusting the attenuators. Changing power levels in this manner allows the device to increase or decrease the power level in more accurate increments but may affect signal-to-noise ratios (noise density).

Setting the Attenuator Hold Enabled property to TRUE limits the power levels that can be attained. With attenuator hold enabled, the power level must satisfy the following conditions:

  • Power level less than or equal to Attenuator Hold Max Power
  • Power level greater than or equal to (Attenuator Hold Max Power - 70 dB)
  • Power level greater than or equal to -145 dBm

To set this property, the NI-RFSG device must be in the Configuration state.

Note  The frequency cannot be changed on the PXI-5670/5671 or PXIe-5672 while the Attenuator Hold Enabled property is set to TRUE.

Supported Devices: PXI-5670/5671, PXIe-5672/5673/5673E

Default Value: FALSE

TRUE Enables attenuator hold.
FALSE Disables attenuator hold.

Related Topics

Attenuator Hold

Settling Times


The following table lists the characteristics of this property.

Datatype bool
High-level VIs N/A
Channel-based No


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