• RFmxSpecAn_SpurCfgNumberOfRanges
• RFmxSpecAn_SpurCfgRangeFrequency
• RFmxSpecAn_SpurCfgRangeRBWFilter
• RFmxSpecAn_SpurCfgRangeSweepTime
• RFmxSpecAn_SpurCfgRangeAbsoluteLimit
• RFmxSpecAn_SpurCfgRangeRelativeAttenuation
• RFmxSpecAn_SpurCfgRangeNumberOfSpursToReport
• RFmxSpecAn_SpurCfgTraceRangeIndex
• RFmxSpecAn_SpurCfgAveraging
• RFmxSpecAn_SpurCfgFFTWindowType
• RFmxSpecAn_SpurCfgRangePeakCriteria
• RFmxSpecAn_SpurCfgRangeDetector
• RFmxSpecAn_SpurCfgRangeVBWFilter
• Array Apis
  • RFmxSpecAn_SpurCfgRangeFrequencyArray
  • RFmxSpecAn_SpurCfgRangeRBWArray
  • RFmxSpecAn_SpurCfgRangeSweepTimeArray
  • RFmxSpecAn_SpurCfgRangeAbsoluteLimitArray
  • RFmxSpecAn_SpurCfgRangeRelativeAttenuationArray
  • RFmxSpecAn_SpurCfgRangeNumberOfSpursToReportArray
  • RFmxSpecAn_SpurCfgRangePeakCriteriaArray
  • RFmxSpecAn_SpurCfgRangeDetectorArray
  • RFmxSpecAn_SpurCfgRangeVBWFilterArray

int32 __stdcall RFmxSpecAn_SpurCfgNumberOfRanges (niRFmxInstrHandle instrumentHandle, char selectorString[], int32 numberOfRanges);

Configures the number of ranges.

Supported devices: PXIe-5665, PXIe-5668

Input
Name	Type	Description
instrumentHandle	niRFmxInstrHandle	Identifies the RFmx session. You can obtain this parameter from the RFmxSpecAn_Initialize) function.
selectorString	char[]	Comprises the signal name. If you do not specify the signal name, the default signal instance is used. Example: "" "signal::sig1" You can use the RFmxSpecAn_BuildSignalString) function to build the selector string).
numberOfRanges	int32	Specifies the number of ranges.

Name	Type	Description
status	int32	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 RFmx function to determine if an error has occurred. To obtain a text description of the status code and additional information about the error condition, call the RFmxSpecAn_GetError) function. The general meaning of the status code is as follows:

Value	Meaning
0	Success
Positive Values	Warnings
Negative Values	Errors

int32 __stdcall RFmxSpecAn_SpurCfgRangeFrequency (niRFmxInstrHandle instrumentHandle, char selectorString[], float64 startFrequency, float64 stopFrequency, int32 rangeEnabled);

Configures the frequency start and stop values of the range.

Use "range<n>" as the selector string to configure this function.

Supported devices: PXIe-5665, PXIe-5668

Input
Name	Type	Description
instrumentHandle	niRFmxInstrHandle	Identifies the RFmx session. You can obtain this parameter from the RFmxSpecAn_Initialize) function.
selectorString	char[]	Comprises the signal name and range number. If you do not specify the signal name, the default signal instance is used. Example: "range0" "signal::sig1/range0" You can use the RFmxSpecAn_BuildRangeString2) function to build the selector string).
startFrequency	float64	Specifies the start of the frequency range, in hertz (Hz), for the measurement.
stopFrequency	float64	Specifies the stop of the frequency range, in hertz (Hz), for the measurement.
rangeEnabled	int32	Specifies whether to measure the Spurs in the frequency range.

RFMXSPECAN_VAL_SPUR_RANGE_ENABLED_FALSE (0)	Disables the acquisition of the frequency range.
RFMXSPECAN_VAL_SPUR_RANGE_ENABLED_TRUE (1)	Enables measurement of Spurs in the frequency range.

Name	Type	Description
status	int32	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 RFmx function to determine if an error has occurred. To obtain a text description of the status code and additional information about the error condition, call the RFmxSpecAn_GetError) function. The general meaning of the status code is as follows:

Value	Meaning
0	Success
Positive Values	Warnings
Negative Values	Errors

int32 __stdcall RFmxSpecAn_SpurCfgRangeRBWFilter (niRFmxInstrHandle instrumentHandle, char selectorString[], int32 RBWAuto, float64 RBW, int32 RBWFilterType);

Configures the resolution bandwidth (RBW) filter.

Use "range<n>" as the selector string to configure this function.

Supported devices: PXIe-5665, PXIe-5668

Input
Name	Type	Description
instrumentHandle	niRFmxInstrHandle	Identifies the RFmx session. You can obtain this parameter from the RFmxSpecAn_Initialize) function.
selectorString	char[]	Comprises the signal name and range number. If you do not specify the signal name, the default signal instance is used. Example: "range0" "signal::sig1/range0" You can use the RFmxSpecAn_BuildRangeString2) function to build the selector string).
RBWAuto	int32	Specifies whether the measurement computes the RBW. Refer to the RBW and Sweep Time section in the Spectrum) topic for more information about RBW and sweep time.

RFMXSPECAN_VAL_SPUR_RBW_AUTO_FALSE (0)	The measurement uses the RBW that you specify in the RBW parameter.
RFMXSPECAN_VAL_SPUR_RBW_AUTO_TRUE (1)	The measurement computes the RBW.

RBW	float64	Specifies the bandwidth, in hertz (Hz), of the RBW filter used to sweep the acquired offset segment, when you set the RBWAuto parameter to RFMXSPECAN_VAL_SPUR_RBW_AUTO_FALSE.
RBWFilterType	int32	Specifies the shape of the digital RBW filter.

RFMXSPECAN_VAL_SPUR_RBW_FILTER_TYPE_FFT_BASED (0)	No RBW filtering is performed.
RFMXSPECAN_VAL_SPUR_RBW_FILTER_TYPE_GAUSSIAN (1)	An RBW filter with a Gaussian response is applied.
RFMXSPECAN_VAL_SPUR_RBW_FILTER_TYPE_FLAT (2)	An RBW filter with a flat response is applied.
RFMXSPECAN_VAL_SPUR_RBW_FILTER_TYPE_SYNCH_TUNED_4 (3)	An RBW filter with a 4-pole synchronously-tuned response is applied.
RFMXSPECAN_VAL_SPUR_RBW_FILTER_TYPE_SYNCH_TUNED_5 (4)	An RBW filter with a 5-pole synchronously-tuned response is applied.

Name	Type	Description
status	int32	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 RFmx function to determine if an error has occurred. To obtain a text description of the status code and additional information about the error condition, call the RFmxSpecAn_GetError) function. The general meaning of the status code is as follows:

Value	Meaning
0	Success
Positive Values	Warnings
Negative Values	Errors

int32 __stdcall RFmxSpecAn_SpurCfgRangeSweepTime (niRFmxInstrHandle instrumentHandle, char selectorString[], int32 sweepTimeAuto, float64 sweepTimeInterval);

Configures the sweep time.

Use "range<n>" as the selector string to configure this function.

Supported devices: PXIe-5665, PXIe-5668

Input
Name	Type	Description
instrumentHandle	niRFmxInstrHandle	Identifies the RFmx session. You can obtain this parameter from the RFmxSpecAn_Initialize) function.
selectorString	char[]	Comprises the signal name and range number. If you do not specify the signal name, the default signal instance is used. Example: "range0" "signal::sig1/range0" You can use the RFmxSpecAn_BuildRangeString2) function to build the selector string).
sweepTimeAuto	int32	Specifies whether the measurement computes the sweep time.

RFMXSPECAN_VAL_SPUR_SWEEP_TIME_AUTO_FALSE (0)	The measurement uses the sweep time that you specify in the RFMXSPECAN_ATTR_SPUR_RANGE_SWEEP_TIME_INTERVAL) attribute.
RFMXSPECAN_VAL_SPUR_SWEEP_TIME_AUTO_TRUE (1)	The measurement calculates the sweep time based on the value of the RFMXSPECAN_ATTR_SPUR_RANGE_RBW_FILTER_BANDWIDTH) attribute.

sweepTimeInterval	float64	Specifies the sweep time, in seconds, when you set the sweepTimeAuto parameter to RFMXSPECAN_VAL_SPUR_SWEEP_TIME_AUTO_FALSE.

Name	Type	Description
status	int32	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 RFmx function to determine if an error has occurred. To obtain a text description of the status code and additional information about the error condition, call the RFmxSpecAn_GetError) function. The general meaning of the status code is as follows:

Value	Meaning
0	Success
Positive Values	Warnings
Negative Values	Errors

int32 __stdcall RFmxSpecAn_SpurCfgRangeAbsoluteLimit (niRFmxInstrHandle instrumentHandle, char selectorString[], int32 absoluteLimitMode, float64 absoluteLimitStart, float64 absoluteLimitStop);

Configures the absolute power limits corresponding to the beginning and end of the frequency range.

Use "range<n>" as the selector string to configure this function.

Supported devices: PXIe-5665, PXIe-5668

Input
Name	Type	Description
instrumentHandle	niRFmxInstrHandle	Identifies the RFmx session. You can obtain this parameter from the RFmxSpecAn_Initialize) function.
selectorString	char[]	Comprises the signal name and range number. If you do not specify the signal name, the default signal instance is used. Example: "range0" "signal::sig1/range0" You can use the RFmxSpecAn_BuildRangeString2) function to build the selector string).
absoluteLimitMode	int32	Specifies whether the absolute limit threshold is a flat line or a line with a slope.

RFMXSPECAN_VAL_SPUR_ABSOLUTE_LIMIT_MODE_MANUAL (0)	The line specified by the RFMXSPECAN_ATTR_SPUR_RANGE_ABSOLUTE_LIMIT_START) and RFMXSPECAN_ATTR_SPUR_RANGE_ABSOLUTE_LIMIT_STOP) attribute values as the two ends is considered as the mask.
RFMXSPECAN_VAL_SPUR_ABSOLUTE_LIMIT_MODE_COUPLE (1)	The two ends of the line are coupled to the value of the RFMXSPECAN_ATTR_SPUR_RANGE_ABSOLUTE_LIMIT_START attribute.

absoluteLimitStart	float64	Specifies the absolute power limit, in dBm, corresponding to the beginning of the frequency range. The value of this parameter is also set as the absolute power limit for the range when you set the absoluteLimitMode parameter to RFMXSPECAN_VAL_SPUR_ABSOLUTE_LIMIT_MODE_COUPLE.
absoluteLimitStop	float64	Specifies the absolute power limit, in dBm, corresponding to the end of the frequency range. This parameter is ignored when you set the absoluteLimitMode parameter to RFMXSPECAN_VAL_SPUR_ABSOLUTE_LIMIT_MODE_COUPLE.

Name	Type	Description
status	int32	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 RFmx function to determine if an error has occurred. To obtain a text description of the status code and additional information about the error condition, call the RFmxSpecAn_GetError) function. The general meaning of the status code is as follows:

Value	Meaning
0	Success
Positive Values	Warnings
Negative Values	Errors

int32 __stdcall RFmxSpecAn_SpurCfgRangeRelativeAttenuation (niRFmxInstrHandle instrumentHandle, char selectorString[], float64 relativeAttenuation);

Specifies the attenuation, in dB, relative to the external attenuation.

Use "range<n>" as the selector string to configure this function.

Supported devices: PXIe-5665, PXIe-5668

Input
Name	Type	Description
instrumentHandle	niRFmxInstrHandle	Identifies the RFmx session. You can obtain this parameter from the RFmxSpecAn_Initialize) function.
selectorString	char[]	Comprises the signal name and range number. If you do not specify the signal name, the default signal instance is used. Example: "range0" "signal::sig1/range0" You can use the RFmxSpecAn_BuildRangeString2) function to build the selector string).
relativeAttenuation	float64	Specifies the attenuation, in dB, relative to the external attenuation. Use this parameter to compensate for variations in external attenuation when the offset channels are spread wide in frequency.

Name	Type	Description
status	int32	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 RFmx function to determine if an error has occurred. To obtain a text description of the status code and additional information about the error condition, call the RFmxSpecAn_GetError) function. The general meaning of the status code is as follows:

Value	Meaning
0	Success
Positive Values	Warnings
Negative Values	Errors

int32 __stdcall RFmxSpecAn_SpurCfgRangeNumberOfSpursToReport (niRFmxInstrHandle instrumentHandle, char selectorString[], int32 numberOfSpursToReport);

Specifies the number of Spurs that the measurement must report in the frequency range.

Use "range<n>" as the selector string to configure this function.

Supported devices: PXIe-5665, PXIe-5668

Input
Name	Type	Description
instrumentHandle	niRFmxInstrHandle	Identifies the RFmx session. You can obtain this parameter from the RFmxSpecAn_Initialize) function.
selectorString	char[]	Comprises the signal name and range number. If you do not specify the signal name, the default signal instance is used. Example: "range0" "signal::sig1/range0" You can use the RFmxSpecAn_BuildRangeString2) function to build the selector string).
numberOfSpursToReport	int32	Specifies the number of Spurs that the measurement must report in the frequency range.

Name	Type	Description
status	int32	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 RFmx function to determine if an error has occurred. To obtain a text description of the status code and additional information about the error condition, call the RFmxSpecAn_GetError) function. The general meaning of the status code is as follows:

Value	Meaning
0	Success
Positive Values	Warnings
Negative Values	Errors

int32 __stdcall RFmxSpecAn_SpurCfgTraceRangeIndex (niRFmxInstrHandle instrumentHandle, char selectorString[], int32 traceRangeIndex);

Specifies the index of the range used to store and retrieve the spurious emission (Spur) trace.

Supported devices: PXIe-5665, PXIe-5668

Input
Name	Type	Description
instrumentHandle	niRFmxInstrHandle	Identifies the RFmx session. You can obtain this parameter from the RFmxSpecAn_Initialize) function.
selectorString	char[]	Comprises the signal name. If you do not specify the signal name, the default signal instance is used. Example: "" "signal::sig1" You can use the RFmxSpecAn_BuildSignalString) function to build the selector string).
traceRangeIndex	int32	Specifies the index of the range used to store and retrieve spurious emission (Spur) traces. This parameter is not used if you set the RFMXSPECAN_ATTR_SPUR_ALL_TRACES_ENABLED) attribute to RFMXSPECAN_VAL_FALSE. When you set this parameter to -1, the measurement stores and retrieves traces for all enabled ranges.

Name	Type	Description
status	int32	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 RFmx function to determine if an error has occurred. To obtain a text description of the status code and additional information about the error condition, call the RFmxSpecAn_GetError) function. The general meaning of the status code is as follows:

Value	Meaning
0	Success
Positive Values	Warnings
Negative Values	Errors

int32 __stdcall RFmxSpecAn_SpurCfgAveraging (niRFmxInstrHandle instrumentHandle, char selectorString[], int32 averagingEnabled, int32 averagingCount, int32 averagingType);

Configures averaging for the spurious emission (Spur) measurement.

Supported devices: PXIe-5665, PXIe-5668

Input
Name	Type	Description
instrumentHandle	niRFmxInstrHandle	Identifies the RFmx session. You can obtain this parameter from the RFmxSpecAn_Initialize) function.
selectorString	char[]	Comprises the signal name. If you do not specify the signal name, the default signal instance is used. Example: "" "signal::sig1" You can use the RFmxSpecAn_BuildSignalString) function to build the selector string).
averagingEnabled	int32	Specifies whether to enable averaging for the measurement.

RFMXSPECAN_VAL_SPUR_AVERAGING_ENABLED_FALSE (0)	The measurement is performed on a single acquisition.
RFMXSPECAN_VAL_SPUR_AVERAGING_ENABLED_TRUE (1)	The measurement uses the averagingCount parameter to calculate the number of acquisitions over which the measurement is averaged.

averagingCount	int32	Specifies the number of acquisitions used for averaging when you set the averagingEnabled parameter to RFMXSPECAN_VAL_SPUR_AVERAGING_ENABLED_TRUE.
averagingType	int32	Specifies the averaging type for averaging multiple spectrum acquisitions. The averaged spectrum is used for the measurement. Refer to the Averaging section of the Spectrum) topic for more information about averaging types.

RFMXSPECAN_VAL_SPUR_AVERAGING_TYPE_RMS (0)	The power spectrum is linearly averaged. RMS averaging reduces signal fluctuations but not the noise floor.
RFMXSPECAN_VAL_SPUR_AVERAGING_TYPE_LOG (1)	The power spectrum is averaged in a logarithm scale.
RFMXSPECAN_VAL_SPUR_AVERAGING_TYPE_SCALAR (2)	The square root of the power spectrum is averaged.
RFMXSPECAN_VAL_SPUR_AVERAGING_TYPE_MAXIMUM (3)	The peak power in the spectrum at each frequency bin is retained from one acquisition to the next.
RFMXSPECAN_VAL_SPUR_AVERAGING_TYPE_MINIMUM (4)	The least power in the spectrum at each frequency bin is retained from one acquisition to the next.

Name	Type	Description
status	int32	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 RFmx function to determine if an error has occurred. To obtain a text description of the status code and additional information about the error condition, call the RFmxSpecAn_GetError) function. The general meaning of the status code is as follows:

Value	Meaning
0	Success
Positive Values	Warnings
Negative Values	Errors

int32 __stdcall RFmxSpecAn_SpurCfgFFTWindowType (niRFmxInstrHandle instrumentHandle, char selectorString[], int32 FFTWindow);

Configures the FFT window to obtain a spectrum for the spurious emission (Spur) measurement.

Supported devices: PXIe-5665, PXIe-5668

Input
Name	Type	Description
instrumentHandle	niRFmxInstrHandle	Identifies the RFmx session. You can obtain this parameter from the RFmxSpecAn_Initialize) function.
selectorString	char[]	Comprises the signal name. If you do not specify the signal name, the default signal instance is used. Example: "" "signal::sig1" You can use the RFmxSpecAn_BuildSignalString) function to build the selector string).
FFTWindow	int32	Specifies the FFT window type to use to reduce spectral leakage. Refer to the Window and FFT section of the Spectrum) topic for more information about FFT window types.

RFMXSPECAN_VAL_SPUR_FFT_WINDOW_NONE (0)	Analyzes transients for which duration is shorter than the window length. You can also use this window type to separate two tones with frequencies close to each other but with almost equal amplitudes.
RFMXSPECAN_VAL_SPUR_FFT_WINDOW_FLAT_TOP (1)	Measures single-tone amplitudes accurately.
RFMXSPECAN_VAL_SPUR_FFT_WINDOW_HANNING (2)	Analyzes transients for which duration is longer than the window length. You can also use this window type to provide better frequency resolution for noise measurements.
RFMXSPECAN_VAL_SPUR_FFT_WINDOW_HAMMING (3)	Analyzes closely-spaced sine waves.
RFMXSPECAN_VAL_SPUR_FFT_WINDOW_GAUSSIAN (4)	Provides a balance of spectral leakage, frequency resolution, and amplitude attenuation. This windowing is useful for time-frequency analysis.
RFMXSPECAN_VAL_SPUR_FFT_WINDOW_BLACKMAN (5)	Analyzes single tone because it has a low maximum side lobe level and a high side lobe roll-off rate.
RFMXSPECAN_VAL_SPUR_FFT_WINDOW_BLACKMAN_HARRIS (6)	Useful as a good general purpose window, having side lobe rejection >90dB and having a moderately wide main lobe.
RFMXSPECAN_VAL_SPUR_FFT_WINDOW_KAISER_BESSEL (7)	Separates two tones with frequencies close to each other but with widely-differing amplitudes.

Name	Type	Description
status	int32	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 RFmx function to determine if an error has occurred. To obtain a text description of the status code and additional information about the error condition, call the RFmxSpecAn_GetError) function. The general meaning of the status code is as follows:

Value	Meaning
0	Success
Positive Values	Warnings
Negative Values	Errors

int32 __stdcall RFmxSpecAn_SpurCfgRangePeakCriteria (niRFmxInstrHandle instrumentHandle, char selectorString[], float64 threshold, float64 excursion);

Configures the peak threshold and peak excursion criteria which a peak should meet to be classified as a spurious emission (Spur).

Input
Name	Type	Description
instrumentHandle	niRFmxInstrHandle	Identifies the RFmx session. You can obtain this parameter from the RFmxSpecAn_Initialize) function.
selectorString	char[]	Comprises the signal name and range number. If you do not specify the signal name, the default signal instance is used. Example: "range0" "signal::sig1/range0" You can use the RFmxSpecAn_BuildRangeString2) function to build the selector string).
threshold	float64	Specifies the threshold level, in dBm, above which the measurement detects spurs in the range.
excursion	float64	Specifies the peak excursion value, in dB, used to find the spurs in the spectrum. The signal should rise and fall by at least the peak excursion value, above the threshold, to be considered as a spur.

Name	Type	Description
status	int32	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 RFmx function to determine if an error has occurred. To obtain a text description of the status code and additional information about the error condition, call the RFmxSpecAn_GetError) function. The general meaning of the status code is as follows:

Value	Meaning
0	Success
Positive Values	Warnings
Negative Values	Errors

int32 __stdcall RFmxSpecAn_SpurCfgRangeDetector (niRFmxInstrHandle instrumentHandle, char selectorString[], int32 detectorType, int32 detectorPoints);

Configures the detector settings including detector type and the number of points to be detected. Use "range<n>" as the selector string to configure this function.

Input
Name	Type	Description
instrumentHandle	niRFmxInstrHandle	Identifies the RFmx session. You can obtain this parameter from the RFmxSpecAn_Initialize) function.
selectorString	char[]	Comprises the signal name. If you do not specify the signal name, the default signal instance is used. Example: "" "signal::sig1" You can use the RFmxSpecAn_BuildSignalString) function to build the selector string).
detectorType	int32	Specifies the type of detector to be used.

RFMXSPECAN_VAL_SPUR_FFT_WINDOW_FLAT_TOP (0)	The detector is disabled.
RFMXSPECAN_VAL_SPUR_RANGE_DETECTOR_TYPE_NONE (0)	The detector is disabled.
RFMXSPECAN_VAL_SPUR_RANGE_DETECTOR_TYPE_SAMPLE (1)	The middle sample in the bucket is detected.
RFMXSPECAN_VAL_SPUR_RANGE_DETECTOR_TYPE_NORMAL (02	The maximum value of the samples within the bucket is detected if the signal only rises or if the signal only falls. If the signal, within a bucket, both rises and falls, then the maximum and minimum values of the samples are detected in alternate buckets.
RFMXSPECAN_VAL_SPUR_RANGE_DETECTOR_TYPE_PEAK (3)	The maximum value of the samples in the bucket is detected.
RFMXSPECAN_VAL_SPUR_RANGE_DETECTOR_TYPE_NEGATIVE_PEAK (4)	The minimum value of the samples in the bucket is detected.
RFMXSPECAN_VAL_SPUR_RANGE_DETECTOR_TYPE_AVERAGE_RMS (5)	The average RMS of all the samples in the bucket is detected.
RFMXSPECAN_VAL_SPUR_RANGE_DETECTOR_TYPE_AVERAGE_VOLTAGE (6)	The average voltage of all the samples in the bucket is detected.
RFMXSPECAN_VAL_SPUR_RANGE_DETECTOR_TYPE_AVERAGE_LOG (7)	The average log of all the samples in the bucket is detected.

detectorPoints	int32	Specifies the number of points after the detector is applied.

Name	Type	Description
status	int32	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 RFmx function to determine if an error has occurred. To obtain a text description of the status code and additional information about the error condition, call the RFmxSpecAn_GetError) function. The general meaning of the status code is as follows:

Value	Meaning
0	Success
Positive Values	Warnings
Negative Values	Errors

int32 __stdcall RFmxSpecAn_SpurCfgRangeVBWFilter (niRFmxInstrHandle instrumentHandle, char selectorString[], int32 VBWAuto, float64 VBW, float64 VBWToRBWRatio);

Configures the video bandwidth (VBW) settings including VBW Auto, VBW, and VBW to RBW ratio for the specified range. Use "range<n>" as the selector string to configure this function.

Input
Name	Type	Description
instrumentHandle	niRFmxInstrHandle	Identifies the RFmx session. You can obtain this parameter from the RFmxSpecAn_Initialize) function.
selectorString	char[]	Comprises the signal name. If you do not specify the signal name, the default signal instance is used. Example: "" "signal::sig1" You can use the RFmxSpecAn_BuildSignalString) function to build the selector string).
VBWAuto	int32	Specifies whether the VBW is expressed directly or computed based on VBW to RBW ratio. This value is expressed in Hz.

RFMXSPECAN_VAL_SPUR_RANGE_VBW_FILTER_AUTO_BANDWIDTH_FALSE (0)	Specify the video bandwidth in the VBW parameter. The VBW to RBW Ratio parameter is disregarded in this mode.
RFMXSPECAN_VAL_SPUR_RANGE_VBW_FILTER_AUTO_BANDWIDTH_TRUE (1)	Specify video bandwidth in terms of the VBW to RBW ratio. The value of the video bandwidth is then computed by using the RFMXSPECAN_ATTR_SPUR_RANGE_VBW_FILTER_VBW_TO_RBW_RATIO attribute and the Spur Range RBW attribute. The value of the Spur Range VBW attribute is disregarded in this mode.

VBW	float64	Specifies the video bandwidth when you set the VBWAuto parameter false. This value is expressed in Hz.
VBWToRBWRatio	float64	Specifies the VBW to RBW Ratio when you set the VBWAuto parameter to True.

Name	Type	Description
status	int32	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 RFmx function to determine if an error has occurred. To obtain a text description of the status code and additional information about the error condition, call the RFmxSpecAn_GetError) function. The general meaning of the status code is as follows:

Value	Meaning
0	Success
Positive Values	Warnings
Negative Values	Errors

int32 __stdcall RFmxSpecAn_SpurCfgRangeFrequencyArray (niRFmxInstrHandle instrumentHandle, char selectorString[], float64 startFrequency[], float64 stopFrequency[], int32 rangeEnabled[], int32 numberOfElements);

Configures the frequency start and stop values and specifies whether to enable measurement of the spurious emissions (Spur) in the frequency range.

Supported devices: PXIe-5665, PXIe-5668

Input
Name	Type	Description
instrumentHandle	niRFmxInstrHandle	Identifies the RFmx session. You can obtain this parameter from the RFmxSpecAn_Initialize) function.
selectorString	char[]	Comprises the signal name. If you do not specify the signal name, the default signal instance is used. Example: "" "signal::sig1" You can use the RFmxSpecAn_BuildSignalString) function to build the selector string).
startFrequency	float64[]	Specifies the array of start frequencies of the frequency range, in hertz (Hz), for the measurement. Specify NULL if you do not want to set a value for this array.
stopFrequency	float64[]	Specifies the array of stop frequencies of the frequency range, in hertz (Hz), for the measurement. Specify NULL if you do not want to set a value for this array.
rangeEnabled	int32[]	Specifies whether to measure the Spurs in the frequency range.

RFMXSPECAN_VAL_SPUR_RANGE_ENABLED_FALSE (0)	Disables the acquisition of the frequency range.
RFMXSPECAN_VAL_SPUR_RANGE_ENABLED_TRUE (1)	Enables measurement of Spurs in the frequency range.

numberOfElements	int32	Specifies the number of elements in each array.

Name	Type	Description
status	int32	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 RFmx function to determine if an error has occurred. To obtain a text description of the status code and additional information about the error condition, call the RFmxSpecAn_GetError) function. The general meaning of the status code is as follows:

Value	Meaning
0	Success
Positive Values	Warnings
Negative Values	Errors

int32 __stdcall RFmxSpecAn_SpurCfgRangeRBWArray (niRFmxInstrHandle instrumentHandle, char selectorString[], int32 RBWAuto[], float64 RBW[], int32 RBWFilterType[], int32 numberOfElements);

Configures the resolution bandwidth (RBW) filter.

Supported devices: PXIe-5665, PXIe-5668

Input
Name	Type	Description
instrumentHandle	niRFmxInstrHandle	Identifies the RFmx session. You can obtain this parameter from the RFmxSpecAn_Initialize) function.
selectorString	char[]	Comprises the signal name. If you do not specify the signal name, the default signal instance is used. Example: "" "signal::sig1" You can use the RFmxSpecAn_BuildSignalString) function to build the selector string).
RBWAuto	int32[]	Specifies the array of RBWAuto which determines whether the measurement computes the RBW. Refer to the RBW and Sweep Time section in the Spectrum) topic for more information about RBW and sweep time. Specify NULL if you do not want to set a value for this array.

RFMXSPECAN_VAL_SPUR_RBW_AUTO_FALSE (0)	The measurement uses the RBW that you specify in the RBW parameter.
RFMXSPECAN_VAL_SPUR_RBW_AUTO_TRUE (1)	The measurement computes the RBW.

RBW	float64[]	Specifies the array of bandwidths, in hertz (Hz), of the RBW filter used to sweep the acquired range, when you set the RBWAuto parameter to RFMXSPECAN_VAL_SPUR_RBW_AUTO_FALSE. Specify NULL if you do not want to set a value for this array.
RBWFilterType	int32[]	Specifies the array of shapes of the digital RBW filter. Specify NULL if you do not want to set a value for this array.

RFMXSPECAN_VAL_SPUR_RBW_FILTER_TYPE_FFTBASED (0)	No RBW filtering is performed.
RFMXSPECAN_VAL_SPUR_RBW_FILTER_TYPE_GAUSSIAN (1)	An RBW filter with a Gaussian response is applied.
RFMXSPECAN_VAL_SPUR_RBW_FILTER_TYPE_FLAT (2)	An RBW filter with a flat response is applied.
RFMXSPECAN_VAL_SPUR_RBW_FILTER_TYPE_SYNCHTUNED4 (3)	An RBW filter with a 4-pole synchronously-tuned response is applied.
RFMXSPECAN_VAL_SPUR_RBW_FILTER_TYPE_SYNCHTUNED5 (4)	An RBW filter with a 5-pole synchronously-tuned response is applied.

numberOfElements	int32	Specifies the number of elements in each array.

Name	Type	Description
status	int32	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 RFmx function to determine if an error has occurred. To obtain a text description of the status code and additional information about the error condition, call the RFmxSpecAn_GetError) function. The general meaning of the status code is as follows:

Value	Meaning
0	Success
Positive Values	Warnings
Negative Values	Errors

int32 __stdcall RFmxSpecAn_SpurCfgRangeSweepTimeArray (niRFmxInstrHandle instrumentHandle, char selectorString[], int32 sweepTimeAuto[], float64 sweepTimeInterval[], int32 numberOfElements);

Configures the sweep time.

Supported devices: PXIe-5665, PXIe-5668

Input
Name	Type	Description
instrumentHandle	niRFmxInstrHandle	Identifies the RFmx session. You can obtain this parameter from the RFmxSpecAn_Initialize) function.
selectorString	char[]	Comprises the signal name. If you do not specify the signal name, the default signal instance is used. Example: "" "signal::sig1" You can use the RFmxSpecAn_BuildSignalString) function to build the selector string).
sweepTimeAuto	int32[]	Specifies whether the measurement computes the sweep time. Specify NULL if you do not want to set a value for this array.

RFMXSPECAN_VAL_SPUR_SWEEP_TIME_AUTO_FALSE (0)	The measurement uses the sweep time that you specify in the RFMXSPECAN_ATTR_SPUR_RANGE_SWEEP_TIME_INTERVAL) attribute.
RFMXSPECAN_VAL_SPUR_SWEEP_TIME_AUTO_TRUE (1)	The measurement calculates the sweep time based on the value of the RFMXSPECAN_ATTR_SPUR_RANGE_RBW_FILTER_BANDWIDTH) attribute.

sweepTimeInterval	float64[]	Specifies the array of sweep times, in seconds, when you set the sweepTimeAuto parameter to RFMXSPECAN_VAL_SPUR_SWEEP_TIME_AUTO_FALSE. Specify NULL if you do not want to set a value for this array.
numberOfElements	int32	Specifies the number of elements in each array.

Name	Type	Description
status	int32	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 RFmx function to determine if an error has occurred. To obtain a text description of the status code and additional information about the error condition, call the RFmxSpecAn_GetError) function. The general meaning of the status code is as follows:

Value	Meaning
0	Success
Positive Values	Warnings
Negative Values	Errors

int32 __stdcall RFmxSpecAn_SpurCfgRangeAbsoluteLimitArray (niRFmxInstrHandle instrumentHandle, char selectorString[], int32 absoluteLimitMode[], float64 absoluteLimitStart[], float64 absoluteLimitStop[], int32 numberOfElements);

Configures the absolute power limits corresponding to the beginning and end of the frequency range and specifies whether the absolute limit threshold is a flat line or a line with a slope.

Supported devices: PXIe-5665, PXIe-5668

Input
Name	Type	Description
instrumentHandle	niRFmxInstrHandle	Identifies the RFmx session. You can obtain this parameter from the RFmxSpecAn_Initialize) function.
selectorString	char[]	Comprises the signal name. If you do not specify the signal name, the default signal instance is used. Example: "" "signal::sig1" You can use the RFmxSpecAn_BuildSignalString) function to build the selector string).
absoluteLimitMode	int32[]	Specifies whether the absolute limit threshold is a flat line or a line with a slope. Specify NULL if you do not want to set a value for this array.

RFMXSPECAN_VAL_SPUR_ABSOLUTE_LIMIT_MODE_MANUAL (0)	The line specified by the RFMXSPECAN_ATTR_SPUR_RANGE_ABSOLUTE_LIMIT_START) and RFMXSPECAN_ATTR_SPUR_RANGE_ABSOLUTE_LIMIT_STOP) attribute values as the two ends is considered as the mask.
RFMXSPECAN_VAL_SPUR_ABSOLUTE_LIMIT_MODE_COUPLE (1)	The two ends of the line are coupled to the value of the RFMXSPECAN_ATTR_SPUR_RANGE_ABSOLUTE_LIMIT_START attribute.

absoluteLimitStart	float64[]	Specifies the array of absolute power limits, in dBm, corresponding to the beginning of the frequency range. The value of this parameter is also set as the absolute power limit for the range when you set the absoluteLimitMode parameter to RFMXSPECAN_VAL_SPUR_ABSOLUTE_LIMIT_MODE_COUPLE. Specify NULL if you do not want to set a value for this array.
absoluteLimitStop	float64[]	Specifies the array of absolute power limits, in dBm, corresponding to the end of the frequency range. This parameter is ignored when you set the absoluteLimitMode parameter to RFMXSPECAN_VAL_SPUR_ABSOLUTE_LIMIT_MODE_COUPLE. Specify NULL if you do not want to set a value for this array.
numberOfElements	int32	Specifies the number of elements in each array.

Name	Type	Description
status	int32	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 RFmx function to determine if an error has occurred. To obtain a text description of the status code and additional information about the error condition, call the RFmxSpecAn_GetError) function. The general meaning of the status code is as follows:

Value	Meaning
0	Success
Positive Values	Warnings
Negative Values	Errors

int32 __stdcall RFmxSpecAn_SpurCfgRangeRelativeAttenuationArray (niRFmxInstrHandle instrumentHandle, char selectorString[], float64 relativeAttenuation[], int32 numberOfElements);

Specifies the attenuation, in dB, relative to the external attenuation.

Supported devices: PXIe-5665, PXIe-5668

Input
Name	Type	Description
instrumentHandle	niRFmxInstrHandle	Identifies the RFmx session. You can obtain this parameter from the RFmxSpecAn_Initialize) function.
selectorString	char[]	Comprises the signal name. If you do not specify the signal name, the default signal instance is used. Example: "" "signal::sig1" You can use the RFmxSpecAn_BuildSignalString) function to build the selector string).
relativeAttenuation	float64[]	Specifies an array of attenuation values, in dB, relative to the external attenuation. Use this parameter to compensate for the variations in external attenuation when offset channels are spread wide in frequency. Specify NULL if you do not want to set a value for this array.
numberOfElements	int32	Specifies the number of elements in each array.

Name	Type	Description
status	int32	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 RFmx function to determine if an error has occurred. To obtain a text description of the status code and additional information about the error condition, call the RFmxSpecAn_GetError) function. The general meaning of the status code is as follows:

Value	Meaning
0	Success
Positive Values	Warnings
Negative Values	Errors

int32 __stdcall RFmxSpecAn_SpurCfgRangeNumberOfSpursToReportArray (niRFmxInstrHandle instrumentHandle, char selectorString[], int32 numberOfSpursToReport[], int32 numberOfElements);

Specifies the number of Spurs that the measurement must report in the frequency range.

Supported devices: PXIe-5665, PXIe-5668

Input
Name	Type	Description
instrumentHandle	niRFmxInstrHandle	Identifies the RFmx session. You can obtain this parameter from the RFmxSpecAn_Initialize) function.
selectorString	char[]	Comprises the signal name. If you do not specify the signal name, the default signal instance is used. Example: "" "signal::sig1" You can use the RFmxSpecAn_BuildSignalString) function to build the selector string).
numberOfSpursToReport	int32[]	Specifies the array of number of Spurs that the measurement must report in the frequency range. Specify NULL if you do not want to set a value for this array.
numberOfElements	int32	Specifies the number of elements in each array.

Name	Type	Description
status	int32	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 RFmx function to determine if an error has occurred. To obtain a text description of the status code and additional information about the error condition, call the RFmxSpecAn_GetError) function. The general meaning of the status code is as follows:

Value	Meaning
0	Success
Positive Values	Warnings
Negative Values	Errors

int32 __stdcall RFmxSpecAn_SpurCfgRangePeakCriteriaArray (niRFmxInstrHandle instrumentHandle, char selectorString[], float64 threshold [], float64 excursion [], int32 numberOfElements );

Configures arrays of peak threshold and peak excursion criteria which a peak should meet to be classified as a spurious emission (Spur).

Supported devices: PXIe-5665, PXIe-5668

Input
Name	Type	Description
instrumentHandle	niRFmxInstrHandle	Identifies the RFmx session. You can obtain this parameter from the RFmxSpecAn_Initialize) function.
selectorString	char[]	Comprises the signal name. If you do not specify the signal name, the default signal instance is used. Example: "" "signal::sig1" You can use the RFmxSpecAn_BuildSignalString) function to build the selector string).
threshold	float64[]	Specifies the array of threshold levels, in dBm, above which the measurement detects spurs in the range.
excursion	float64[]	Specifies the array of peak excursion values, in dB, used to find the spurs in the spectrum. The signal should rise and fall by at least the peak excursion value, above the threshold, to be considered as a spur.
numberOfElements	int32	Specifies the number of elements in each array.

Name	Type	Description
status	int32	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 RFmx function to determine if an error has occurred. To obtain a text description of the status code and additional information about the error condition, call the RFmxSpecAn_GetError) function. The general meaning of the status code is as follows:

Value	Meaning
0	Success
Positive Values	Warnings
Negative Values	Errors

int32 __stdcall RFmxSpecAn_SpurCfgRangeDetectorArray (niRFmxInstrHandle instrumentHandle, char selectorString[], int32 detectorType[], int32 detectorPoints[], int32 numberOfElements);

Configures an array of the detector settings including detector type and the number of points to be detected.

Input
Name	Type	Description
instrumentHandle	niRFmxInstrHandle	Identifies the RFmx session. You can obtain this parameter from the RFmxSpecAn_Initialize) function.
selectorString	char[]	Comprises the signal name. If you do not specify the signal name, the default signal instance is used. Example: "" "signal::sig1" You can use the RFmxSpecAn_BuildSignalString) function to build the selector string).
detectorType	int32[]	Specifies an array of the type of detector to be used.
detectorPoints	int32[]	Specifies an array of the number of points after the detector is applied.
numberOfElements	int32	Specifies the number of elements in each array.

Name	Type	Description
status	int32	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 RFmx function to determine if an error has occurred. To obtain a text description of the status code and additional information about the error condition, call the RFmxSpecAn_GetError) function. The general meaning of the status code is as follows:

Value	Meaning
0	Success
Positive Values	Warnings
Negative Values	Errors

int32 __stdcall RFmxSpecAn_SpurCfgRangeVBWFilterArray (niRFmxInstrHandle instrumentHandle, char selectorString[], int32 VBWAuto[], float64 VBW[], float64 VBWToRBWRatio[], int32 numberOfElements);

Configures an array of the VBW settings, including VBW Auto, VBW, and VBW to RBW ratio for the specified range.

Input
Name	Type	Description
instrumentHandle	niRFmxInstrHandle	Identifies the RFmx session. You can obtain this parameter from the RFmxSpecAn_Initialize) function.
selectorString	char[]	Comprises the signal name. If you do not specify the signal name, the default signal instance is used. Example: "" "signal::sig1" You can use the RFmxSpecAn_BuildSignalString) function to build the selector string).
VBWAuto	int32[]	Specifies whether the VBW is expressed directly or computed based on VBW to RBW ratio. This value is expressed in Hz.

RFMXSPECAN_VAL_SPUR_RANGE_VBW_FILTER_AUTO_BANDWIDTH_FALSE (0)	Specify the video bandwidth in the VBW parameter. The VBW to RBW Ratio parameter is disregarded in this mode.
RFMXSPECAN_VAL_SPUR_RANGE_VBW_FILTER_AUTO_BANDWIDTH_TRUE (1)	Specify video bandwidth in terms of the VBW to RBW ratio. The value of the video bandwidth is then computed by using the RFMXSPECAN_ATTR_SPUR_RANGE_VBW_FILTER_VBW_TO_RBW_RATIO attribute and the Spur Range RBW attribute. The value of the Spur Range VBW attribute is disregarded in this mode.

VBW	float64[]	Specifies the video bandwidth when you set the VBWAuto parameter false. This value is expressed in Hz.
VBWToRBWRatio	float64[]	Specifies the VBW to RBW Ratio when you set the VBWAuto parameter to True.
numberOfElements	int32	Specifies the number of elements in each array.

Name	Type	Description
status	int32	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 RFmx function to determine if an error has occurred. To obtain a text description of the status code and additional information about the error condition, call the RFmxSpecAn_GetError) function. The general meaning of the status code is as follows:

Value	Meaning
0	Success
Positive Values	Warnings
Negative Values	Errors