Vertical:Advanced:Minimum Adjacent Channel Power Ratio (dB) Property

Vertical:Advanced:Minimum Adjacent Channel Power Ratio (dB) Property

Short Name: Minimum ACPR

Property of niRFSA

Specifies the minimum adjacent channel power ratio (ACPR), in decibels, relative to the main channel reference level. This property configures NI-RFSA to optimize downconverter gain to measure a lower-power adjacent channel, adding gain only after filtering the main channel. The gain NI-RFSA applies is always less than or equal to the ACPR value you specify.

Note  For the PXIe-5665 (3.6 GHz), this property is supported only if you set the Device Instantaneous Bandwidth, Span, or IF Filter Bandwidth property to a value less than 300 kHz. For the PXIe-5665 (14 GHz), this property is supported for Device Instantaneous Bandwidth, Span, or IF Filter Bandwidth property values less than 300 kHz by using the 300 kHz IF filter, and it is supported for values between 300 kHz and 5 MHz by using the 5 MHz IF filter.

Note  NI-RFSA coerces this property to zero for the PXI-5600, PXIe-5601, and the PXIe-5667. For all other devices, read the coerced value of this property to determine the actual amount of gain applied.

Note  For the PXIe-5668, this property alters the IF Output Power Level property. This property will not affect the Reference Level property.

Default Value: 0

Supported Devices: PXI-5600, PXIe-5601/5603/5605/5606 (external digitizer mode), PXI-5661, PXIe-5663/5663E/5665/5667/5668

Remarks

The following table lists the characteristics of this property.

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