|NI-RFSG 18.1 Help|
|NI-RFSG 18.2.1 Help|
|NI-RFSG 19.1 Help|
Short Name: LO PLL Fractional Mode Enabled
Property of niRFSG
Specifies whether to use fractional mode for the local oscillator (LO) phase-locked loop (PLL). This property enables or disables fractional frequency tuning in the LO. Fractional mode provides a finer frequency step resolution and allows smaller values for the LO Frequency Step Size property. However, fractional mode may introduce non-harmonic spurs.
This property is valid only if you set the LO Source property to Onboard.
Supported Devices: PXIe-5644/5645/5646, PXIe-5840
Default Value: Enabled
Refer to the local oscillators topic appropriate to your device for more information about using fractional mode.
Disables fractional mode for the LO PLL.
Enables fractional mode for the LO PLL.
The following table lists the characteristics of this property.