NI RFmx SpecAn Spur Attributes - ni/grpc-device GitHub Wiki
- RFMXSPECAN_ATTR_SPUR_MEASUREMENT_ENABLED
-
Range
- RFMXSPECAN_ATTR_SPUR_NUMBER_OF_RANGES
- RFMXSPECAN_ATTR_SPUR_RANGE_ENABLED
- RFMXSPECAN_ATTR_SPUR_RANGE_START_FREQUENCY
- RFMXSPECAN_ATTR_SPUR_RANGE_STOP_FREQUENCY
- RBW Filter
- VBW Filter
- Sweep Time
- Detector
- Absolute Limit
- RFMXSPECAN_ATTR_SPUR_RANGE_RELATIVE_ATTENUATION
- RFMXSPECAN_ATTR_SPUR_RANGE_PEAK_THRESHOLD
- RFMXSPECAN_ATTR_SPUR_RANGE_PEAK_EXCURSION
- RFMXSPECAN_ATTR_SPUR_RANGE_NUMBER_OF_SPURS_TO_REPORT
- Averaging
- FFT
- RFMXSPECAN_ATTR_SPUR_TRACE_RANGE_INDEX
- RFMXSPECAN_ATTR_SPUR_AMPLITUDE_CORRECTION_TYPE
- RFMXSPECAN_ATTR_SPUR_ALL_TRACES_ENABLED
- RFMXSPECAN_ATTR_SPUR_NUMBER_OF_ANALYSIS_THREADS
- Results
Data Type: | int32 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeI32 RFmxSpecAn_GetAttributeI32 |
Description: | Specifies whether to enable the spurious emission (Spur) measurement. You do not need to use a selector string to read this result for default signal and result instance. Refer to the Selector Strings topic for information about the string syntax for named signals and results. The default value is RFMXSPECAN_VAL_FALSE. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetMeasurementEnabled Set Function: RFmxSpecAn_SpurSetMeasurementEnabled |
Data Type: | int32 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeI32 RFmxSpecAn_GetAttributeI32 |
Description: | Specifies the number of ranges. You do not need to use a selector string to configure or read this attribute for the default signal instance. Refer to the Selector Strings topic for information about the string syntax for named signals. The default value is 1. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetNumberOfRanges Set Function: RFmxSpecAn_SpurSetNumberOfRanges |
Data Type: | int32 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeI32 RFmxSpecAn_GetAttributeI32 |
Description: | Specifies whether to measure the spurious emissions (Spur) in the frequency range. Use 'range(n)' as the selector string to configure or read this attribute. The default value is RFMXSPECAN_VAL_SPUR_RANGE_ENABLED_TRUE. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetRangeEnabled Set Function: RFmxSpecAn_SpurSetRangeEnabled |
Values: |
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. |
Data Type: | float64 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeF64 RFmxSpecAn_GetAttributeF64 |
Description: | Specifies the start of the frequency range for the measurement. This value is expressed in Hz. Use 'range(n)' as the selector string to configure or read this attribute. The default value is 500 MHz. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetRangeStartFrequency Set Function: RFmxSpecAn_SpurSetRangeStartFrequency |
Data Type: | float64 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeF64 RFmxSpecAn_GetAttributeF64 |
Description: | Specifies the stop of the frequency range for the measurement. This value is expressed in Hz. Use 'range(n)' as the selector string to configure or read this attribute. The default value is 1.5 GHz. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetRangeStopFrequency Set Function: RFmxSpecAn_SpurSetRangeStopFrequency |
Data Type: | int32 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeI32 RFmxSpecAn_GetAttributeI32 |
Description: | Specifies whether the measurement computes the resolution bandwidth (RBW). Use 'range(n)' as the selector string to configure or read this attribute. The default value is RFMXSPECAN_VAL_SPUR_RBW_AUTO_TRUE. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetRangeRBWFilterAutoBandwidth Set Function: RFmxSpecAn_SpurSetRangeRBWFilterAutoBandwidth |
Values: |
RFMXSPECAN_VAL_SPUR_RBW_AUTO_FALSE (0) | The measurement uses the RBW that you specify in the RFMXSPECAN_ATTR_SPUR_RANGE_RBW_FILTER_BANDWIDTH attribute. |
---|---|
RFMXSPECAN_VAL_SPUR_RBW_AUTO_TRUE (1) | The measurement computes the RBW. |
Data Type: | float64 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeF64 RFmxSpecAn_GetAttributeF64 |
Description: | Specifies the bandwidth of the resolution bandwidth (RBW) filter used to sweep the acquired signal, when you set the RFMXSPECAN_ATTR_SPUR_RANGE_RBW_FILTER_AUTO_BANDWIDTH attribute to False. Use 'range(n)' as the selector string to configure or read this attribute. The default value is 10 kHz. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetRangeRBWFilterBandwidth Set Function: RFmxSpecAn_SpurSetRangeRBWFilterBandwidth |
Data Type: | int32 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeI32 RFmxSpecAn_GetAttributeI32 |
Description: | Specifies the shape of the digital resolution bandwidth (RBW) filter. Use 'range(n)' as the selector string to configure or read this attribute. The default value is RFMXSPECAN_VAL_SPUR_RBW_FILTER_TYPE_GAUSSIAN. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetRangeRBWFilterType Set Function: RFmxSpecAn_SpurSetRangeRBWFilterType |
Values: |
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. |
Data Type: | int32 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeI32 RFmxSpecAn_GetAttributeI32 |
Description: | Specifies the bandwidth definition which you use to specify the value of the RFMXSPECAN_ATTR_SPUR_RANGE_RBW_FILTER_BANDWIDTH attribute. Use 'range(n)' as the selector string to configure or read this attribute. The default value is RFMXSPECAN_VAL_SPUR_RANGE_RBW_FILTER_BANDWIDTH_DEFINITION_3DB. Get Function: RFmxSpecAn_SpurGetRangeRBWFilterBandwidthDefinition Set Function: RFmxSpecAn_SpurSetRangeRBWFilterBandwidthDefinition |
Values: |
RFMXSPECAN_VAL_SPUR_RANGE_RBW_FILTER_BANDWIDTH_DEFINITION_3DB (0) | Defines the RBW in terms of the 3dB bandwidth of the RBW filter. When you set the RFMXSPECAN_ATTR_SPUR_RANGE_RBW_FILTER_TYPE attribute to RFMXSPECAN_VAL_SPUR_RBW_FILTER_TYPE_FFT_BASED, RBW is the 3dB bandwidth of the window specified by the RFMXSPECAN_ATTR_SPUR_FFT_WINDOW attribute. |
---|---|
RFMXSPECAN_VAL_SPUR_RANGE_RBW_FILTER_BANDWIDTH_DEFINITION_BIN_WIDTH (2) | Defines the RBW in terms of the spectrum bin width computed using FFT when you set the RFMXSPECAN_ATTR_SPUR_RANGE_RBW_FILTER_TYPE attribute to FFT Based. |
RFMXSPECAN_VAL_SPUR_RANGE_RBW_FILTER_BANDWIDTH_DEFINITION_ENBW (3) | Defines the RBW in terms of the ENBW bandwidth of the RBW filter. When you set the Spur RBW Filter Type attribute to FFT Based, RBW is the ENBW bandwidth of the window specified by the RFMXSPECAN_ATTR_SPUR_FFT_WINDOW attribute. |
Data Type: | int32 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeI32 RFmxSpecAn_GetAttributeI32 |
Description: | Specifies whether the video bandwidth (VBW) is expressed directly or computed based on the VBW to RBW ratio. Use 'range(n)' as the selector string to configure or read this attribute. The default value is RFMXSPECAN_VAL_SPUR_RANGE_VBW_FILTER_AUTO_BANDWIDTH_TRUE. Get Function: RFmxSpecAn_SpurGetRangeVBWFilterAutoBandwidth Set Function: RFmxSpecAn_SpurSetRangeVBWFilterAutoBandwidth |
Values: |
RFMXSPECAN_VAL_SPUR_RANGE_VBW_FILTER_AUTO_BANDWIDTH_FALSE (0) | Specify the video bandwidth in the RFMXSPECAN_ATTR_SPUR_RANGE_VBW_FILTER_BANDWIDTH attribute. The Spur VBW to RBW Ratio attribute 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 RFMXSPECAN_ATTR_SPUR_RANGE_RBW_FILTER_BANDWIDTH attribute. The value of the RFMXSPECAN_ATTR_SPUR_RANGE_VBW_FILTER_BANDWIDTH attribute is disregarded in this mode. |
Data Type: | float64 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeF64 RFmxSpecAn_GetAttributeF64 |
Description: | Specifies the video bandwidth (VBW) in Hz when you set the RFMXSPECAN_ATTR_SPUR_RANGE_VBW_FILTER_AUTO_BANDWIDTH attribute to RFMXSPECAN_VAL_SPUR_RANGE_VBW_FILTER_AUTO_BANDWIDTH_FALSE. Use 'range(n)' as the selector string to configure or read this attribute. The default value is 30000. Get Function: RFmxSpecAn_SpurGetRangeVBWFilterBandwidth Set Function: RFmxSpecAn_SpurSetRangeVBWFilterBandwidth |
Data Type: | float64 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeF64 RFmxSpecAn_GetAttributeF64 |
Description: | Specifies the VBW to RBW Ratio when you set the RFMXSPECAN_ATTR_SPUR_RANGE_VBW_FILTER_AUTO_BANDWIDTH attribute to RFMXSPECAN_VAL_SPUR_RANGE_VBW_FILTER_AUTO_BANDWIDTH_TRUE. Use 'range(n)' as the selector string to configure or read this attribute. The default value is 3. Get Function: RFmxSpecAn_SpurGetRangeVBWFilterVBWToRBWRatio Set Function: RFmxSpecAn_SpurSetRangeVBWFilterVBWToRBWRatio |
Data Type: | int32 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeI32 RFmxSpecAn_GetAttributeI32 |
Description: | Specifies whether the measurement computes the sweep time. Use 'range(n)' as the selector string to configure or read this attribute. The default value is RFMXSPECAN_VAL_SPUR_SWEEP_TIME_AUTO_TRUE. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetRangeSweepTimeAuto Set Function: RFmxSpecAn_SpurSetRangeSweepTimeAuto |
Values: |
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. |
Data Type: | float64 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeF64 RFmxSpecAn_GetAttributeF64 |
Description: | Specifies the sweep time when you set the RFMXSPECAN_ATTR_SPUR_RANGE_SWEEP_TIME_AUTO attribute to RFMXSPECAN_VAL_SPUR_SWEEP_TIME_AUTO_FALSE. This value is expressed in seconds. Use 'range(n)' as the selector string to configure or read this attribute. The default value is 0.001. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetRangeSweepTimeInterval Set Function: RFmxSpecAn_SpurSetRangeSweepTimeInterval |
Data Type: | int32 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeI32 RFmxSpecAn_GetAttributeI32 |
Description: | Specifies the type of detector to be used. Use 'range(n)' as the selector string to configure or read this attribute. Refer to Spectral Measurements topic for more information on detector types. The default value is RFMXSPECAN_VAL_SPUR_RANGE_DETECTOR_TYPE_NONE. Get Function: RFmxSpecAn_SpurGetRangeDetectorType Set Function: RFmxSpecAn_SpurSetRangeDetectorType |
Values: |
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 (2) | 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. |
Data Type: | int32 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeI32 RFmxSpecAn_GetAttributeI32 |
Description: | Specifies the number of range points after the detector is applied. Use 'range(n)' as the selector string to configure or read this attribute. The default value is 1001. Get Function: RFmxSpecAn_SpurGetRangeDetectorPoints Set Function: RFmxSpecAn_SpurSetRangeDetectorPoints |
Data Type: | int32 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeI32 RFmxSpecAn_GetAttributeI32 |
Description: | Specifies whether the absolute limit threshold is a flat line or a line with a slope. Use 'range(n)' as the selector string to configure or read this attribute. The default value is RFMXSPECAN_VAL_SPUR_ABSOLUTE_LIMIT_MODE_COUPLE. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetRangeAbsoluteLimitMode Set Function: RFmxSpecAn_SpurSetRangeAbsoluteLimitMode |
Values: |
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 threshold. |
---|---|
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. |
Data Type: | float64 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeF64 RFmxSpecAn_GetAttributeF64 |
Description: | Specifies the absolute power limit corresponding to the beginning of the frequency range. This value is expressed in dBm. This power limit is also set as the absolute power limit for the range when you set the RFMXSPECAN_ATTR_SPUR_RANGE_ABSOLUTE_LIMIT_MODE attribute to RFMXSPECAN_VAL_SPUR_ABSOLUTE_LIMIT_MODE_COUPLE. Use 'range(n)' as the selector string to configure or read this attribute. The default value is -10. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetRangeAbsoluteLimitStart Set Function: RFmxSpecAn_SpurSetRangeAbsoluteLimitStart |
Data Type: | float64 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeF64 RFmxSpecAn_GetAttributeF64 |
Description: | Specifies the absolute power limit corresponding to the end of the frequency range. This value is expressed in dBm. The measurement ignores this attribute when you set the RFMXSPECAN_ATTR_SPUR_RANGE_ABSOLUTE_LIMIT_MODE attribute to RFMXSPECAN_VAL_SPUR_ABSOLUTE_LIMIT_MODE_COUPLE. Use 'range(n)' as the selector string to configure or read this attribute. The default value is -10. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetRangeAbsoluteLimitStop Set Function: RFmxSpecAn_SpurSetRangeAbsoluteLimitStop |
Data Type: | float64 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeF64 RFmxSpecAn_GetAttributeF64 |
Description: | Specifies the attenuation relative to the external attenuation specified by the RFMXSPECAN_ATTR_EXTERNAL_ATTENUATION attribute. This value is expressed in dB. Use the Spur Range Rel Attn attribute to compensate for the variations in external attenuation when offset segments are spread wide in frequency. Use 'range(n)' as the selector string to configure or read this attribute. The default value is 0. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetRangeRelativeAttenuation Set Function: RFmxSpecAn_SpurSetRangeRelativeAttenuation |
Data Type: | float64 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeF64 RFmxSpecAn_GetAttributeF64 |
Description: | Specifies the threshold level above which the measurement detects spurs in the range that you specify using the RFMXSPECAN_ATTR_SPUR_RANGE_START_FREQUENCY and RFMXSPECAN_ATTR_SPUR_RANGE_STOP_FREQUENCY attributes. This value is expressed in dBm. Use 'range(n)' as the selector string to configure or read this attribute. The default value is -200. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetRangePeakThreshold Set Function: RFmxSpecAn_SpurSetRangePeakThreshold |
Data Type: | float64 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeF64 RFmxSpecAn_GetAttributeF64 |
Description: | Specifies the peak excursion value used to find the spurs in the spectrum. This value is expressed in dB. The signal should rise and fall by at least the peak excursion value, above the threshold, to be considered a spur. Use 'range(n)' as the selector string to configure or read this attribute. The default value is 0. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetRangePeakExcursion Set Function: RFmxSpecAn_SpurSetRangePeakExcursion |
Data Type: | int32 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeI32 RFmxSpecAn_GetAttributeI32 |
Description: | Specifies the number of spurious emissions (Spur) that the measurement should report in the frequency range. Use 'range(n)' as the selector string to configure or read this attribute. The default value is 10. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetRangeNumberOfSpursToReport Set Function: RFmxSpecAn_SpurSetRangeNumberOfSpursToReport |
Data Type: | int32 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeI32 RFmxSpecAn_GetAttributeI32 |
Description: | Specifies whether to enable averaging for the spurious emission (Spur) measurement. You do not need to use a selector string to configure or read this attribute for the default signal instance. Refer to the Selector Strings topic for information about the string syntax for named signals. The default value is RFMXSPECAN_VAL_SPUR_AVERAGING_ENABLED_FALSE. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetAveragingEnabled Set Function: RFmxSpecAn_SpurSetAveragingEnabled |
Values: |
RFMXSPECAN_VAL_SPUR_AVERAGING_ENABLED_FALSE (0) | The measurement is performed on a single acquisition. |
---|---|
RFMXSPECAN_VAL_SPUR_AVERAGING_ENABLED_TRUE (1) | The Spur measurement uses the RFMXSPECAN_ATTR_SPUR_AVERAGING_COUNT attribute as the number of acquisitions over which the Spur measurement is averaged. |
Data Type: | int32 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeI32 RFmxSpecAn_GetAttributeI32 |
Description: | Specifies the number of acquisitions used for averaging when you set the RFMXSPECAN_ATTR_SPUR_AVERAGING_ENABLED attribute to RFMXSPECAN_VAL_SPUR_AVERAGING_ENABLED_TRUE. You do not need to use a selector string to configure or read this attribute for the default signal instance. Refer to the Selector Strings topic for information about the string syntax for named signals. The default value is 10. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetAveragingCount Set Function: RFmxSpecAn_SpurSetAveragingCount |
Data Type: | int32 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeI32 RFmxSpecAn_GetAttributeI32 |
Description: | Specifies the averaging type for averaging multiple spectrum acquisitions. The averaged spectrum is used for spurious emission (Spur) measurement. You do not need to use a selector string to configure or read this attribute for the default signal instance. Refer to the Selector Strings topic for information about the string syntax for named signals. The default value is RFMXSPECAN_VAL_SPUR_AVERAGING_TYPE_RMS. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetAveragingType Set Function: RFmxSpecAn_SpurSetAveragingType |
Values: |
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 logarithmic 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. |
Data Type: | int32 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeI32 RFmxSpecAn_GetAttributeI32 |
Description: | Specifies the FFT window type to use to reduce spectral leakage. You do not need to use a selector string to configure or read this attribute for the default signal instance. Refer to the Selector Strings topic for information about the string syntax for named signals. The default value is RFMXSPECAN_VAL_SPUR_FFT_WINDOW_FLAT_TOP. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetFFTWindow Set Function: RFmxSpecAn_SpurSetFFTWindow |
Values: |
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 greater than 90 dB 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. |
Data Type: | int32 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeI32 RFmxSpecAn_GetAttributeI32 |
Description: | Specifies the index of the range used to store and retrieve spurious emission (Spur) traces. This attribute is not used if you set the Spur All Traces Enabled Attribute to FALSE. When you set this attribute to -1, the measurement stores and retrieves traces for all enabled ranges. You do not need to use a selector string to configure or read this attribute for the default signal instance. Refer to the Selector Strings topic for information about the string syntax for named signals. The default value is -1. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetTraceRangeIndex Set Function: RFmxSpecAn_SpurSetTraceRangeIndex |
Data Type: | int32 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeI32 RFmxSpecAn_GetAttributeI32 |
Description: | Specifies whether the amplitude of the frequency bins, used in the measurement, is corrected for external attenuation at the RF center frequency, or at the individual frequency bins. Use the RFmxInstr_CfgExternalAttenuationTable function to configure the external attenuation table. You do not need to use a selector string to configure or read this attribute for the default signal instance. Refer to the Selector Strings topic for information about the string syntax for named signals. The default value is RFMXSPECAN_VAL_SPUR_AMPLITUDE_CORRECTION_TYPE_RF_CENTER_FREQUENCY. Get Function: RFmxSpecAn_SpurGetAmplitudeCorrectionType Set Function: RFmxSpecAn_SpurSetAmplitudeCorrectionType |
Values: |
RFMXSPECAN_VAL_SPUR_AMPLITUDE_CORRECTION_TYPE_RF_CENTER_FREQUENCY (0) | All the frequency bins in the spectrum are compensated with a single external attenuation value that corresponds to the RF center frequency. |
---|---|
RFMXSPECAN_VAL_SPUR_AMPLITUDE_CORRECTION_TYPE_SPECTRUM_FREQUENCY_BIN (1) | An individual frequency bin in the spectrum is compensated with the external attenuation value corresponding to that frequency. |
Data Type: | int32 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeI32 RFmxSpecAn_GetAttributeI32 |
Description: | Specifies whether to enable the traces to be stored and retrieved after performing the spurious emissions (Spur) measurement. You do not need to use a selector string to configure or read this attribute for the default signal instance. Refer to the Selector Strings topic for information about the string syntax for named signals. The default value is RFMXSPECAN_VAL_FALSE. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetAllTracesEnabled Set Function: RFmxSpecAn_SpurSetAllTracesEnabled |
Data Type: | int32 |
---|---|
Access: | read/write |
Functions: | RFmxSpecAn_SetAttributeI32 RFmxSpecAn_GetAttributeI32 |
Description: | Specifies the maximum number of threads used for parallelism for spurious emission (Spur) measurement. The number of threads can range from 1 to the number of physical cores. The number of threads you set may not be used in calculations. The actual number of threads used depends on the problem size, system resources, data availability, and other considerations. You do not need to use a selector string to configure or read this attribute for the default signal instance. Refer to the Selector Strings topic for information about the string syntax for named signals. The default value is 1. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetNumberOfAnalysisThreads Set Function: RFmxSpecAn_SpurSetNumberOfAnalysisThreads |
Data Type: | int32 |
---|---|
Access: | read only |
Functions: | RFmxSpecAn_GetAttributeI32 |
Description: | Indicates the overall measurement status. You do not need to use a selector string to read this result for default signal and result instance. Refer to the Selector Strings topic for information about the string syntax for named signals and results. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetResultsMeasurementStatus |
Values: |
RFMXSPECAN_VAL_SPUR_MEASUREMENT_STATUS_FAIL (0) | A detected spur in the range is greater than the value of the Spur Results Spur Abs Limits attribute. |
---|---|
RFMXSPECAN_VAL_SPUR_MEASUREMENT_STATUS_PASS (1) | All detected spurs in the range are lower than the value of the Spur Results Spur Abs Limit attribute. |
Data Type: | int32 |
---|---|
Access: | read only |
Functions: | RFmxSpecAn_GetAttributeI32 |
Description: | Indicates the measurement status for the frequency range. Use 'range(n)' as the selector string to read this result. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetResultsRangeMeasurementStatus |
Values: |
RFMXSPECAN_VAL_SPUR_RANGE_STATUS_FAIL (0) | The amplitude of the detected spurs is greater than the value of the RFMXSPECAN_ATTR_SPUR_RESULTS_RANGE_ABSOLUTE_LIMIT attribute. |
---|---|
RFMXSPECAN_VAL_SPUR_RANGE_STATUS_PASS (1) | The amplitude of the detected spurs is lower than the value of the RFMXSPECAN_ATTR_SPUR_RESULTS_RANGE_ABSOLUTE_LIMIT attribute. |
Data Type: | int32 |
---|---|
Access: | read only |
Functions: | RFmxSpecAn_GetAttributeI32 |
Description: | Returns the number of detected spurious emissions (Spur) in the specified frequency range. Use 'range(n)' as the selector string to read this result. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetResultsRangeNumberOfDetectedSpurs |
Data Type: | float64 |
---|---|
Access: | read only |
Functions: | RFmxSpecAn_GetAttributeF64 |
Description: | Returns the frequency of the detected spurious emissions (Spur). This value is expressed in Hz. Use 'range(n)/spur(k)' as the selector string to read this result. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetResultsRangeFrequency |
Data Type: | float64 |
---|---|
Access: | read only |
Functions: | RFmxSpecAn_GetAttributeF64 |
Description: | Returns the difference between the amplitude and the absolute limit of the detected spurious emissions (Spur) at the Spur frequency. Use 'range(n)/spur(k)' as the selector string to read this result. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetResultsRangeMargin |
Data Type: | float64 |
---|---|
Access: | read only |
Functions: | RFmxSpecAn_GetAttributeF64 |
Description: | Returns the amplitude of the detected spurious emissions (Spur). This value is expressed in dBm. Use 'range(n)/spur(k)' as the selector string to read this result. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetResultsRangeAmplitude |
Data Type: | float64 |
---|---|
Access: | read only |
Functions: | RFmxSpecAn_GetAttributeF64 |
Description: | Returns the threshold used to calculate the margin of the detected spurious emissions (Spur). This value is expressed in dBm. The measurement calculates the threshold using the absolute limit line specified by the RFMXSPECAN_ATTR_SPUR_RANGE_ABSOLUTE_LIMIT_MODE attribute. Use 'range(n)/spur(k)' as the selector string to read this result. Supported devices: PXIe-5665/5668 Get Function: RFmxSpecAn_SpurGetResultsRangeAbsoluteLimit |