Vertical:Advanced:External Gain (dB) Property

Vertical:Advanced:External Gain (dB) Property

Short Name: External Gain

Property of niRFSA

Specifies the gain, in decibels, of a switch (or cable) connected before the RF IN connector of an NI-RFSA system. When you set this property, NI-RFSA calculates appropriate attenuator settings based on the value of this property and the value of the Reference Level property. In this case, NI-RFSA interprets the reference level as the maximum expected power level of the signal at the input of the external gain device. For more information about attenuation, refer to the Attenuation and Signal Levels topic for your device in the NI RF Vector Signal Analyzers Help.

Note  For the PXIe-5820, this property specifies the gain, in decibels, of a switch (or cable) connected before the IQ IN connector.

Note  For the PXIe-5645, this property is ignored if you are using the I/Q ports.

With this property set, NI-RFSA reads the IQ Power Edge Trigger Level property value as the power level at the input of the external gain device at which the NI-RFSA device should trigger.

Negative values indicate attenuation.

Default Value: 0

Supported Devices: PXIe-5601/5603/5605/5606 (external digitizer mode), PXIe-5644/5645/5646, PXIe-5663/5663E/5665/5667/5668, PXIe-5820/5830/5831/5832/5840/5841/5842

Remarks

The following table lists the characteristics of this property.

Datatype
Permissions	Read/Write
High-level VIs	N/A
Channel-based	No
Resettable	Yes