niRFSG Self Calibrate Range VI

NI RF Signal Generators Help (NI-RFSG 18.1)


Edition Date: June 2018
Part Number: 371025V-01
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Self-calibrates all configurations within the specified frequency and peak power level limits.

NI recommends that no external signals are present on the RF In or IQ In ports during the calibration.

Supported Devices: PXIe-5644/5645/5646, PXIe-5820/5840

Details

niRFSG Self Calibrate Range

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instrument handle identifies your instrument session. instrument handle is obtained from either the niRFSG Initialize VI or the niRFSG Initialize With Options VI.

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steps to omit specifies which calibration steps to skip during the self-calibration process. The default value is an empty array, which specifies that all calibration steps are performed.

LO Self Cal Omits the LO Self Cal step. If you omit this step, the power level of the LO is not adjusted.
Power Level Accuracy Omits the Power Level Accuracy step. If you omit this step, the power level accuracy of the device is not adjusted.
Residual LO Power Omits the Residual LO Power step. If you omit this step, the Residual LO Power performance is not adjusted.
Image Suppression Omits the Image Suppression step. If you omit this step, the Residual Sideband Image performance is not adjusted.
Synthesizer Alignment Omits the Voltage Controlled Oscillator (VCO) Alignment step. If you omit this step, the LO PLL is not adjusted.
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min frequency specifies the minimum frequency to calibrate.

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max frequency specifies the maximum frequency to calibrate.

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min peak power level specifies the minimum power level to calibrate.

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max peak power level specifies the maximum power level to calibrate.

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error in describes error conditions that occur before this node runs. This input provides standard error in functionality.

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instrument handle out passes a reference to your instrument session to the next VI. instrument handle out is obtained from the niRFSG Initialize VI or the niRFSG Initialize With Options VI.

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error out contains error information. This output provides standard error out functionality.

Details

Recommendation for Best Results

For best results, NI recommends that you perform self-calibration without omitting any steps. However, if certain aspects of performance are less important for your application, you can omit certain steps for faster calibration.

Open NI-RFSA Sessions

  • If there is an existing NI-RFSA session open for the same PXIe-5644/5645/5646, it may remain open but cannot be used while this VI runs.
  • If there is an existing NI-RFSA session open for the same PXIe-5820/5840 while this VI runs, it may remain open but cannot be used for operations that access the hardware, for example niRFSA Commit or niRFSA Initiate.

Clearing Self Calibration Range Data

You can clear the self calibration range data by calling the niRFSG Clear Self Calibrate Range VI or by restarting the system.

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