RF:Frequency Settling Property

NI RF Signal Generators Help (NI-RFSG 18.1)


Edition Date: June 2018
Part Number: 371025V-01
View Product Info

Download Help (Windows Only)


NI-RFSG 18.1 Help
NI-RFSG 18.2.1 Help
NI-RFSG 19.1 Help

Short Name: Frequency Settling

Property of niRFSG

Configures the frequency settling time. Interpretation of this value depends on the Frequency Settling Units property.

Supported Devices: PXIe-5644/5645/5646, PXI/PXIe-5650/5651/5652, PXIe-5653/5654/5654 with PXIe-5696, PXIe-5673/5673E, PXIe-5840

Default Value: 1.0

Valid Values:

Frequency Settling Units Property Setting PXIe-5644/5645/5646, PXI/PXIe-5650/5651/5652, PXIe-5673/5673E PXIe-5653 PXIe-5654/5654 with PXIe-5696 PXIe-5840 PXIe-5840 with PXIe-56533
With PXIe-5840 internal LO With PXIe-5653 LO
Seconds After Lock 2 microseconds1 to 80 milliseconds, resolution of approximately 2 microseconds 2 microseconds1 to 80 milliseconds, resolution of approximately 2 microseconds Not supported 1 microsecond1 to 10 seconds, resolution of 1 microsecond 1 microsecond1 to 10 seconds, resolution of 1 microsecond 2 microseconds1 to 80 milliseconds, resolution of approximately 2 microseconds
Seconds After I/O 0 microseconds to 80 milliseconds, resolution of 1 microsecond 0 microseconds to 80 milliseconds, resolution of 1 microsecond 0 microseconds to 65,535 microseconds, resolution of 1 microsecond 0 microseconds to 10 seconds, resolution of 1 microsecond 0 microseconds to 10 seconds, resolution of 1 microsecond 0 microseconds to 80 milliseconds, resolution of 1 microsecond
Parts per million (PPM) (1E-6)2 1.0, 0.1, 0.01 1.0, 0.1, 0.01, 0.001 1.0, 0.1, 0.01 1.0 to 0.01 1.0 to 0.01 1.0 to 0.001

1To ensure that the PLL lock stabilizes when the Frequency Settling Units property is set to Seconds After Lock, NI recommends a settling time of 128 microseconds, minimum, if the Loop Bandwidth property is set to Narrow. NI recommends a settling time of 16 microseconds, minimum, if the Loop Bandwidth property is set to Wide.

2Any specified PPM value that is above the acceptable minimum value is coerced down to the closest valid value.

3The valid values for this configuration depend on the module used as the LO source. Refer to the LO Source property for more information.

Related Topics

Settling Times

Remarks

The following table lists the characteristics of this property.

Datatype fD
PermissionsRead/Write
High-level VIs N/A
Channel-based No
ResettableYes

WAS THIS ARTICLE HELPFUL?

Not Helpful