Use the RFmxInstr properties to access options for configuring and fetching measurements.

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Advanced:Amplitude Settling
Specifies the amplitude settling accuracy value. This value is expressed in decibels. RFmx waits until the RF power attains the specified accuracy level after calling the RFmx Initiate VI.
Advanced:Channel Coupling
Specifies whether the RF IN connector is AC- or DC-coupled on the downconverter.
Advanced:Cleaner Spectrum
Specifies how to obtain the lowest noise floor or faster measurement speed.
Advanced:Common Mode Level (V)
Specifies the common-mode level presented at each differential input terminal. The common-mode level shifts both positive and negative terminals in the same direction. This must match the common-mode level of the device under test (DUT). This value is expressed in Volts.
Advanced:Digital Gain (dB)
Specifies the scaling factor applied to the time-domain voltage data in the digitizer. This value is expressed in dB. RFmx does not compensate for the specified digital gain.
Advanced:Digitizer Dither Enabled
Specifies whether dithering is enabled on the digitizer.
Advanced:Downconverter Gain (dB)
Returns the net signal gain for the device at the current RFmx settings and temperature. RFmx scales the acquired I/Q and spectrum data from the digitizer using the value of this property.
Advanced:Downconverter Preselector Enabled
Specifies whether the tunable preselector is enabled on the downconverter.
Advanced:FFT Width
Specifies the FFT width of the device. The FFT width is the effective bandwidth of the signal path during each signal acquisition.
Advanced:Frequency Settling
Specifies the value used for LO frequency settling.
Advanced:Frequency Settling Units
Specifies the delay duration units and interpretation for LO settling.
Advanced:IF Filter Bandwidth (Hz)
Specifies the IF filter path bandwidth for your device configuration.
Advanced:IF Output Power Level Offset
Specifies the power offset by which to adjust the default IF output power level. This value is expressed in dB.
Advanced:Input Isolation Enabled
Specifies whether input isolation is enabled.
Advanced:Mixer Level (dBm)
Specifies the mixer level. This value is expressed in dBm.
Advanced:Mixer Level Offset (dB)
Specifies the number of dB by which to adjust the device mixer level.
Advanced:Number of Raw IQ Records
Returns the number of raw IQ records to acquire to complete measurement averaging.
Advanced:OSP Delay Enabled
Specifies whether to enable the digitizer OSP block to delay Reference Triggers, along with the data samples, moving through the OSP block.
Advanced:Optimize Path For Signal Bandwidth
Optimizes RF path for the signal bandwidth that is centered on the IQ carrier frequency.
Advanced:Overflow Error Reporting
Configures error reporting for ADC and overflows occurred during onboard signal processing. Overflows lead to clipping of the waveform.
Advanced:Phase Offset
Specifies the offset to apply to the initial I and Q phases.
Advanced:Preamp Enabled
Specifies whether the RF preamplifier is enabled in the system.
Advanced:RF Attenuation Step Size (dB)
Specifies the step size for the RF attenuation level. This value is expressed in dB. The actual RF attenuation is coerced up to the next highest multiple of the specified step size. If the mechanical attenuators are not available to implement the coerced RF attenuation, the solid state attenuators are used.
Advanced:RF Highpass Filter Frequency (Hz)
Specifies the maximum corner frequency of the high pass filter in the RF signal path. The device uses the highest frequency high-pass filter option below or equal to the value you specify and returns a coerced value. Specifying a value of 0 disables high pass filtering silly. For multispan acquisitions, the device uses the appropriate filter for each subspan during acquisition, depending on the details of your application and the value you specify. In multispan acquisition spectrum applications, this property returns the value you specified rather than a coerced value if multiple high-pass filters are used during the acquisition.
Advanced:SMU Channel
Specifies the output channel to be used for noise figure (NF) measurement in RFmx.
Advanced:SMU Resource Name
Specifies the resource name assigned by Measurement and Automation Explorer (MAX) for NI Source Measure Units (SMU) which is used as the noise source power supply for Noise Figure (NF) measurement, for example, PXI1Slot3, where PXI1Slot3 is an instrument resource name. SMU Resource Name can also be a logical IVI name.
Advanced:Self Calibration:Self Cal Validity Check
Specifies whether the RFmx driver validates the self-calibration data.
Advanced:Self Calibration:Self Cal Validity Check Time Interval (s)
Specifies the minimum time between two self calibration validity checks. This value is expressed in seconds.
Advanced:Subspan Overlap
Use subspan overlap process to eliminate or reduce analyzer spurs. To enable this feature, specify a non-zero percentage overlap between consecutive subspans in a spectrum acquisition.
Advanced:Temperature Read Interval (s)
Specifies the minimum time difference between temperature sensor readings. This value is expressed in seconds.
Advanced:Thermal Correction Headroom Range (deg C)
Specifies the expected thermal operating range of the instrument from the self-calibration temperature returned from the Device Temperature property. This value is expressed in degree Celsius.
Advanced:Thermal Correction Temperature Resolution (deg C)
Specifies the temperature change required before RFmx recalculates the thermal correction settings when entering the running state. This value is expressed in degree Celsius.
Device Information:Device Temperature (deg C)
Returns the current temperature of the module. This value is expressed in degrees Celsius.
Device Information:Digitizer Temperature (deg C)
Returns the current temperature of the digitizer module. This value is expressed in degrees Celsius.
Device Information:Instrument Firmware Revision
Returns a string containing the firmware revision information of the RF downconverter for the composite device you are currently using.
Device Information:Instrument Model
Returns a string that contains the model number or name of the RF device that you are currently using.
Device Information:LO Temperature (deg C)
Returns the current temperature of the LO module associated with the device. This value is expressed in degrees Celsius.
Device Information:Module Revision
Returns the revision of the RF downconverter module.
Device Information:Preselector Present
Indicates whether a preselector is available on the RF downconverter module.
Device Information:RF Preamp Present
Indicates whether an RF preamplifier is available on the RF downconverter module.
Device Information:Serial Number
Returns the serial number of the RF downconverter module.
Event:Done:Output Terminal
Specifies the destination terminal for the Done event.
Event:Done:Terminal Name
Returns the fully qualified signal name as a string.
Event:End Of Record:Output Terminal
Specifies the destination terminal for the End of Record event.
Event:End Of Record:Terminal Name
Returns the fully qualified signal name as a string.
Event:Ready For Advance:Output Terminal
Specifies the destination terminal for the Ready for Advance event.
Event:Ready For Advance:Terminal Name
Returns the fully qualified signal name as a string.
Event:Ready For Reference:Output Terminal
Specifies the destination terminal for the Ready for Reference event.
Event:Ready For Reference:Terminal Name
Returns the fully qualified signal name as a string.
Event:Ready For Start:Output Terminal
Specifies the destination terminal for the Ready for Start event.
Event:Ready For Start:Terminal Name
Returns the fully qualified signal name as a string.
Frequency Reference:Exported Terminal
Specifies a comma-separated list of the terminals at which to export the frequency reference.
Frequency Reference:Frequency (Hz)
Specifies the Reference Clock rate, when the Frequency Reference Source property is set to ClkIn or RefIn. This value is expressed in Hz.
Frequency Reference:Source
Specifies the frequency reference source.
LO:Downconverter Center Frequency
Enables in-band retuning and specifies the current frequency of the RF downconverter. This value is expressed in Hz.
LO:Downconverter Frequency Offset (Hz)
Specifies an offset from the center frequency value for the downconverter. Use this property to offset the measurement away from the LO leakage or DC Offset of analyzers that use a direct conversion architecture. You must set this property to half the bandwidth or span of the measurement + guardband. The guardband is needed to ensure that the LO leakage is not inside the analog or digital filter rolloffs. This value is expressed in Hz.
LO:LO Export Enabled
Specifies whether to enable the LO OUT terminals on the installed devices.
LO:LO Frequency (Hz)
Specifies the LO signal frequency for the configured center frequency. This value is expressed in Hz.
LO:LO Frequency Step Size (Hz)
Specifies the step size for tuning the LO phase-locked loop (PLL).
LO:LO In Power (dBm)
Specifies the power level expected at the LO IN terminal when the LO Source property is set to LO_In. This value is expressed in dBm.
LO:LO Injection Side
Specifies the LO injection side.
LO:LO Leakage Avoidance Enabled
Specifies whether to reduce the effects of the instrument leakage by placing the LO outside the band of acquisition.
LO:LO Out Power (dBm)
Specifies the power level of the signal at the LO OUT terminal when the LO Export Enabled property is set to TRUE. This value is expressed in dBm.
LO:LO PLL Fractional Mode
Specifies whether to use fractional mode for the LO phase-locked loop (PLL).
LO:LO Source
Specifies the local oscillator (LO) signal source used to downconvert the RF input signal.
LO:LO2 Export Enabled
Specifies whether to enable the LO2 OUT terminals in the installed devices.
LO:Tuning Speed
Makes tradeoffs between tuning speed and phase noise.
LO:VCO Frequency Step Size (Hz)
Specifies the step size for tuning the internal voltage-controlled oscillator (VCO) used to generate the LO signal. The valid values for LO1 include 1 Hz to 50 MHz and for LO2 include 1 Hz to 100 MHz.
Load Configurations: Load Options
Specifies the configurations to skip while loading from a file using the RFmxInstr Load Configurations VI .
MIMO:LO Sharing Mode
Specifies the RFmx session with the respective LO sharing mode.
MIMO:LO Splitter:Loss:Frequency (Hz)
Specifies the frequencies corresponding to the insertion loss inherent to the RF Splitter, as specified by the LO Splitter Loss property. This value is expressed in Hz.
MIMO:LO Splitter:Loss:Loss (dB)
Specifies an array of the insertion losses inherent to the RF Splitter. This value is expressed in dB.
MIMO:Number of LO Sharing Groups
Specifies the RFmx session with the number of LO sharing groups.
Mechanical Attenuation:Auto
Specifies whether the RFmx driver chooses an attenuation setting based on the hardware settings.
Mechanical Attenuation:Value (dB)
Specifies the level of mechanical attenuation for the RF path. This value is expressed in dB.
RF Attenuation:Auto
Specifies whether the RFmx driver computes the RF attenuation.
RF Attenuation:Value (dB)
Specifies the nominal attenuation setting for all attenuators before the first mixer in the RF signal chain. This value is expressed in dB.
Recommended Settings:Acquisition Type
Returns the recommended acquisition type for the last committed measurement configuration.
Recommended Settings:Center Frequency (Hz)
Returns the recommended center frequency of the RF signal. This value is expressed in Hz.
Recommended Settings:IQ:Acquisition Time (s)
Returns the recommended acquisition time for I/Q acquisition. This value is expressed in seconds.
Recommended Settings:IQ:Minimum Sample Rate (Hz)
Returns the recommended minimum sample rate for I/Q acquisition. This value is expressed in Hz.
Recommended Settings:IQ:Pre Trigger Time (s)
Returns the recommended pretrigger time for I/Q acquisition. This value is expressed in seconds.
Recommended Settings:Number of Records
Returns the recommended number of records to acquire to complete measurement averaging.
Recommended Settings:Spectral:Acquisition Span (Hz)
Returns the recommended acquisition span for spectral acquisition. This value is expressed in Hz.
Recommended Settings:Spectral:FFT Window
Returns the recommended FFT window type for spectral acquisition.
Recommended Settings:Spectral:Resolution Bandwidth (Hz)
Returns the recommended FFT bin width for spectral acquisition. This value is expressed in Hz.
Recommended Settings:Trigger Min Quiet Time (s)
Returns the recommended minimum quiet time during which the signal level must be below the trigger value for triggering to occur. This value is expressed in seconds.
Selector String
Specifies the selector string used to access all subsequent selector string-based properties in this instance of the property node.
Trigger:Advance:Digital Edge:Source
Specifies the source terminal for the advance trigger.
Trigger:Advance:Export Output Terminal
Specifies the destination terminal for the exported advance trigger.
Trigger:Advance:Terminal Name
Returns the fully qualified signal name as a string.
Trigger:Advance:Type
Specifies whether the advance trigger is a digital edge or a software trigger.
Trigger:Export Output Terminal
Specifies the destination terminal for the exported Reference Trigger. You can also choose not to export any signal.
Trigger:Start:Digital Edge:Edge
Specifies the active edge for the start trigger. This property is used only when you set the Start Trigger Type property to Digital Edge.
Trigger:Start:Digital Edge:Source
Specifies the source terminal for the start trigger. This property is used only when you set the Start Trigger Type property to Digital Edge.
Trigger:Start:Export Output Terminal
Specifies the destination terminal for the exported start trigger.
Trigger:Start:Terminal Name
Returns the fully qualified signal name as a string.
Trigger:Start:Type
Specifies whether the start trigger is a digital edge or a software trigger.
Trigger:Terminal Name
Returns the fully qualified signal name as a string.

RFmx Instr LabVIEW Reference

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