NI RFSG Calibration Functions - ni/grpc-device GitHub Wiki

Calibration Functions

niRFSG_ClearSelfCalibrateRange

C Function Prototype

ViStatus niRFSG_ClearSelfCalibrateRange (ViSession vi);

Purpose

Clears the data obtained from the niRFSG_SelfCalibrateRange function.

Supported Devices: PXIe-5644/5645/5646, PXIe-5820/5830/5831/5832/5840/5841

Parameters

Input
Name Type Description
vi ViSession Identifies your instrument session. The ViSession handle is obtained from the niRFSG_init function or the niRFSG_InitWithOptions function and identifies a particular instrument session.

Return Value

Name Type Description
status ViStatus

Returns the status code of this operation. The status code either indicates success or describes an error or warning condition. Examine the status code from each call to an instrument driver function to determine if an error occurred.

To obtain a text description of the error code, call the niRFSG_GetError function.

The general meaning of the status code is as follows:

Value Meaning
0 Success
Positive Values Warnings
Negative Values Errors

| :- | :- | :- |

niRFSG_SelfCal

C Function Prototype

ViStatus niRFSG_SelfCal (ViSession vi);

Purpose

Performs an internal self-calibration on the device and associated modules that support self-calibration. If the calibration is successful, new calibration data and constants are stored in the onboard nonvolatile memory of the module.

Note Note  If there is an existing NI-RFSA session open for the same PXIe-5820/5830/5831/5832/5840/5841 while this function runs, it may remain open but cannot be used for operations that access the hardware, for example niRFSA_Commit or niRFSA_Initiate.
The PXIe-5841 maintains separate self-calibration data for both the PXIe-5841 standalone and when associated with the PXIe-5655. Use this function once for each intended configuration.

Supported Devices: PXI-5610, PXIe-5653, PXI-5670/5671, PXIe-5672/5673/5673E, PXIe-5820/5830/5831/5832/5840/5841

Parameters

Input
Name Type Description
vi ViSession Identifies your instrument session. The ViSession handle is obtained from the niRFSG_init function or the niRFSG_InitWithOptions function and identifies a particular instrument session.

Return Value

Name Type Description
status ViStatus

Returns the status code of this operation. The status code either indicates success or describes an error or warning condition. Examine the status code from each call to an instrument driver function to determine if an error occurred.

To obtain a text description of the error code, call the niRFSG_GetError function.

The general meaning of the status code is as follows:

Value Meaning
0 Success
Positive Values Warnings
Negative Values Errors

| :- | :- | :- |

niRFSG_SelfCalibrateRange

C Function Prototype

ViStatus niRFSG_SelfCalibrateRange (ViSession vi, ViInt64 stepsToOmit, ViReal64 minFrequency, ViReal64 maxFrequency, ViReal64 minPowerLevel, ViReal64 maxPowerLevel);

Purpose

Self-calibrates all configurations within the specified frequency and peak power level limits.

Self-calibration range data is valid until you restart the system or call the niRFSG_ClearSelfCalibrateRange function.

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

Note Note  This function does not update self-calibration date and temperature.
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.
Note Note  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 function runs.
Note Note  If there is an existing NI-RFSA session open for the same PXIe-5820/5830/5831/5832/5840/5841 while this function runs, it may remain open but cannot be used for operations that access the hardware, for example niRFSA_Commit or niRFSA_Initiate.
Supported Devices: PXIe-5644/5645/5646, PXIe-5820/5830/5831/5832/5840/5841

Parameters

Input
Name Type Description
vi ViSession Identifies your instrument session. The ViSession handle is obtained from the niRFSG_init function or the niRFSG_InitWithOptions function and identifies a particular instrument session.
stepsToOmit ViInt64

Specifies which calibration steps to skip during the self-calibration process. The default value is an empty array, which indicates that no calibration steps are omitted.

Defined Values:

NIRFSG_VAL_SELF_CAL_OMIT_NONE No calibration steps are omitted.
NIRFSG_VAL_SELF_CAL_LO_SELF_CAL Omits the LO Self Cal step. If you omit this step, the power level of the LO is not adjusted.
NIRFSG_VAL_SELF_CAL_POWER_LEVEL_ACCURACY Omits the Power Level Accuracy step. If you omit this step, the power level accuracy of the device is not adjusted.
NIRFSG_VAL_SELF_CAL_RESIDUAL_LO_POWER Omits the Residual LO Power step. If you omit this step, the Residual LO Power performance is not adjusted.
NIRFSG_VAL_SELF_CAL_IMAGE_SUPPRESSION Omits the Image Suppression step. If you omit this step, the Residual Sideband Image performance is not adjusted.
NIRFSG_VAL_SELF_CAL_SYNTHESIZER_ALIGNMENT Omits the Voltage Controlled Oscillator (VCO) Alignment step. If you omit this step, the LO PLL is not adjusted.


Default Value: NIRFSG_VAL_SELF_CAL_OMIT_NONE

minFrequency ViReal64 Specifies the minimum frequency to calibrate.
maxFrequency ViReal64 Specifies the maximum frequency to calibrate.
minPowerLevel ViReal64 Specifies the minimum power level to calibrate.
maxPowerLevel ViReal64 Specifies the maximum power level to calibrate.

Return Value

Name Type Description
status ViStatus

Returns the status code of this operation. The status code either indicates success or describes an error or warning condition. Examine the status code from each call to an instrument driver function to determine if an error occurred.

To obtain a text description of the error code, call the niRFSG_GetError function.

The general meaning of the status code is as follows:

Value Meaning
0 Success
Positive Values Warnings
Negative Values Errors

| :- | :- | :- |

niRFSG_GetSelfCalibrationDateAndTime

C Function Prototype

ViStatus niRFSG_GetSelfCalibrationDateAndTime (ViSession vi, ViInt32 module, ViInt32* year, ViInt32* month, ViInt32* day, ViInt32* hour, ViInt32* minute, ViInt32* second);

Purpose

Returns the date and time of the last successful self-calibration. The time returned is 24-hour local time. For example, if the device was calibrated at 2:30 PM, this function returns 14 for the hours parameter and 30 for the minutes parameter.

Supported Devices: PXI-5610, PXIe-5644/5645/5646, PXIe-5653, PXI-5670/5671, PXIe-5672/5673/5673E, PXIe-5820/5830/5831/5832/5840/5841

Parameters

Input
Name Type Description
vi ViSession Identifies your instrument session. The ViSession handle is obtained from the niRFSG_init function or the niRFSG_InitWithOptions function and identifies a particular instrument session.
Module ViInt32* Specifies from which stand-alone module to retrieve the last successful self-calibration date and time.
Output
Name Type Description
year ViInt32* Returns the year of the last successful calibration.
month ViInt32* Returns the month of the last successful calibration.
day ViInt32* Returns the day of the last successful calibration.
hour ViInt32* Returns the hour of the last successful calibration.
minute ViInt32* Returns the minute of the last successful calibration.
second ViInt32* Returns the second of the last successful calibration.

Return Value

Name Type Description
status ViStatus

Returns the status code of this operation. The status code either indicates success or describes an error or warning condition. Examine the status code from each call to an instrument driver function to determine if an error occurred.

To obtain a text description of the error code, call the niRFSG_GetError function.

The general meaning of the status code is as follows:

Value Meaning
0 Success
Positive Values Warnings
Negative Values Errors

| :- | :- | :- |

niRFSG_GetSelfCalibrationTemperature

C Function Prototype

ViStatus niRFSG_GetSelfCalibrationTemperature (ViSession vi, ViInt32 module, ViReal64* temperature);

Purpose

Returns the temperature, in degrees Celsius, of the device at the last successful self-calibration.

Supported Devices: PXI-5610, PXIe-5653, PXI-5670/5671, PXIe-5672/5673/5673E, PXIe-5820/5830/5831 (IF only)/5832 (IF only)/5840/5841

Parameters

Input
Name Type Description
vi ViSession Identifies your instrument session. The ViSession handle is obtained from the niRFSG_init function or the niRFSG_InitWithOptions function and identifies a particular instrument session.
Module ViInt32

Specifies from which stand-alone module to retrieve the last successful self-calibration temperature.

Defined Values:

NIRFSG_VAL_PRIMARY_MODULE The stand-alone device or the main module in a multi-module device.
NIRFSG_VAL_AWG The AWG associated with the primary module.
NIRFSG_VAL_LO The LO associated with the primary module.

Default Value: NIRFSG_VAL_PRIMARY_MODULE

Output
Name Type Description
temperature ViReal64* Returns the temperature, in degrees Celsius, of the device at the last successful self-calibration.

Return Value

Name Type Description
status ViStatus

Returns the status code of this operation. The status code either indicates success or describes an error or warning condition. Examine the status code from each call to an instrument driver function to determine if an error occurred.

To obtain a text description of the error code, call the niRFSG_GetError function.

The general meaning of the status code is as follows:

Value Meaning
0 Success
Positive Values Warnings
Negative Values Errors

| :- | :- | :- |

niRFSG_GetExternalCalibrationLastDateAndTime

C Function Prototype

ViStatus niRFSG_GetExternalCalibrationLastDateAndTime (ViSession vi, ViInt32* year, ViInt32* month, ViInt32* day, ViInt32* hour, ViInt32* minute, ViInt32* second);

Purpose

Returns the date and time of the last successful external calibration. The time returned is 24-hour (military) local time; for example, if the device was calibrated at 2:30 PM, this function returns 14 for the hours parameter and 30 for the minutes parameter.

Supported Devices: PXI-5610, PXIe-5611, PXIe-5644/5645/5646, PXI/PXIe-5650/5651/5652, PXIe-5653/5654/5654, PXI-5670/5671, PXIe-5672/5673/5673E, PXIe-5696, PXIe-5820/5830/5831/5832/5840/5841

Parameters

Input
Name Type Description
vi ViSession Identifies your instrument session. The ViSession handle is obtained from the niRFSG_init function or the niRFSG_InitWithOptions function and identifies a particular instrument session.
Output
Name Type Description
year ViInt32* Returns the year of the last successful calibration.
month ViInt32* Returns the month of the last successful calibration.
day ViInt32* Returns the day of the last successful calibration.
hour ViInt32* Returns the hour of the last successful calibration.
minute ViInt32* Returns the minute of the last successful calibration.
second ViInt32* Returns the second of the last successful calibration.

Return Value

Name Type Description
status ViStatus

Returns the status code of this operation. The status code either indicates success or describes an error or warning condition. Examine the status code from each call to an instrument driver function to determine if an error occurred.

To obtain a text description of the error code, call the niRFSG_GetError function.

The general meaning of the status code is as follows:

Value Meaning
0 Success
Positive Values Warnings
Negative Values Errors

| :- | :- | :- |

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