Acquisition:Spectrum:Subspan Overlap Property

Acquisition:Spectrum:Subspan Overlap Property

Short Name: Subspan Overlap

Property of niRFSA

Specifies the amount of overlap between consecutive subspans in a multispan spectrum acquisition. Overlapping subspans can reduce the power level of spurs in acquired data. The value you specify determines the amount of shift as a percentage of subspan width.

Specifying a value of 0 disables subspan overlap. In this case, NI-RFSA uses either a single-span acquisition or a multispan acquisition without overlap, depending on the frequency range requested and the current device settings.

Specifying a value greater than 0 causes NI-RFSA to use a multispan acquisition with the specified overlap even in situations in which it would normally use a single-span acquisition. NI-RFSA acquires data within the overlapped percentage and uses the minimum of the acquired values.

Note  NI-RFSA may apply further shifts to the specified value to accommodate fixed-frequency edges of components such as preselectors.

Valid Values:

PXIe-5665/5668: 0 to <100

PXIe-5820/5830/5831/5832/5840/5841: 0

PXIe-5842: 0, 50

Default Value: 0

Supported Devices: PXIe-5665/5668, 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