• Frequency Reference
  • RFMXINSTR_ATTR_FREQUENCY_REFERENCE_SOURCE
  • RFMXINSTR_ATTR_FREQUENCY_REFERENCE_FREQUENCY
  • RFMXINSTR_ATTR_FREQUENCY_REFERENCE_EXPORTED_TERMINAL
• RF Attenuation
  • RFMXINSTR_ATTR_RF_ATTENUATION_AUTO
  • RFMXINSTR_ATTR_RF_ATTENUATION_VALUE
• Mechanical Attenuation
  • RFMXINSTR_ATTR_MECHANICAL_ATTENUATION_AUTO
  • RFMXINSTR_ATTR_MECHANICAL_ATTENUATION_VALUE
• LO
  • RFMXINSTR_ATTR_LO_LEAKAGE_AVOIDANCE_ENABLED
  • RFMXINSTR_ATTR_LO_SOURCE
  • RFMXINSTR_ATTR_LO_FREQUENCY
  • RFMXINSTR_ATTR_LO_EXPORT_ENABLED
  • RFMXINSTR_ATTR_LO2_EXPORT_ENABLED
  • RFMXINSTR_ATTR_LO_IN_POWER
  • RFMXINSTR_ATTR_LO_OUT_POWER
  • RFMXINSTR_ATTR_TUNING_SPEED
  • RFMXINSTR_ATTR_DOWNCONVERTER_FREQUENCY_OFFSET
  • RFMXINSTR_ATTR_DOWNCONVERTER_CENTER_FREQUENCY
  • RFMXINSTR_ATTR_LO_INJECTION_SIDE
  • RFMXINSTR_ATTR_LO_FREQUENCY_STEP_SIZE
  • RFMXINSTR_ATTR_LO_VCO_FREQUENCY_STEP_SIZE
  • RFMXINSTR_ATTR_LO_PLL_FRACTIONAL_MODE
• Trigger
  • RFMXINSTR_ATTR_TRIGGER_EXPORT_OUTPUT_TERMINAL
  • RFMXINSTR_ATTR_TRIGGER_TERMINAL_NAME
  • Start
    • RFMXINSTR_ATTR_START_TRIGGER_TYPE
    • Digital Edge Start Trigger
      • RFMXINSTR_ATTR_START_TRIGGER_DIGITAL_EDGE_SOURCE
      • RFMXINSTR_ATTR_START_TRIGGER_DIGITAL_EDGE
    • RFMXINSTR_ATTR_START_TRIGGER_EXPORT_OUTPUT_TERMINAL
    • RFMXINSTR_ATTR_START_TRIGGER_TERMINAL_NAME
  • Advance
    • RFMXINSTR_ATTR_ADVANCE_TRIGGER_TYPE
    • Digital Edge Advance Trigger
      • RFMXINSTR_ATTR_ADVANCE_TRIGGER_DIGITAL_EDGE_SOURCE
    • RFMXINSTR_ATTR_ADVANCE_TRIGGER_EXPORT_OUTPUT_TERMINAL
    • RFMXINSTR_ATTR_ADVANCE_TRIGGER_TERMINAL_NAME
• Event
  • Ready For Start
    • RFMXINSTR_ATTR_READY_FOR_START_EVENT_OUTPUT_TERMINAL
    • RFMXINSTR_ATTR_READY_FOR_START_EVENT_TERMINAL_NAME
  • Ready For Advance
    • RFMXINSTR_ATTR_READY_FOR_ADVANCE_EVENT_OUTPUT_TERMINAL
    • RFMXINSTR_ATTR_READY_FOR_ADVANCE_EVENT_TERMINAL_NAME
  • Ready For Reference
    • RFMXINSTR_ATTR_READY_FOR_REFERENCE_EVENT_OUTPUT_TERMINAL
    • RFMXINSTR_ATTR_READY_FOR_REFERENCE_EVENT_TERMINAL_NAME
  • End Of Record
    • RFMXINSTR_ATTR_END_OF_RECORD_EVENT_OUTPUT_TERMINAL
    • RFMXINSTR_ATTR_END_OF_RECORD_EVENT_TERMINAL_NAME
  • Done
    • RFMXINSTR_ATTR_DONE_EVENT_OUTPUT_TERMINAL
    • RFMXINSTR_ATTR_DONE_EVENT_TERMINAL_NAME
• Device Information
  • RFMXINSTR_ATTR_DEVICE_TEMPERATURE
  • RFMXINSTR_ATTR_DIGITIZER_TEMPERATURE
  • RFMXINSTR_ATTR_LO_TEMPERATURE
  • RFMXINSTR_ATTR_SERIAL_NUMBER
  • RFMXINSTR_ATTR_INSTRUMENT_MODEL
  • RFMXINSTR_ATTR_MODULE_REVISION
  • RFMXINSTR_ATTR_INSTRUMENT_FIRMWARE_REVISION
  • RFMXINSTR_ATTR_PRESELECTOR_PRESENT
  • RFMXINSTR_ATTR_RF_PREAMP_PRESENT
• LO Sharing
  • RFMXINSTR_ATTR_LO_SHARING_MODE
  • RFMXINSTR_ATTR_NUMBER_OF_LO_SHARING_GROUPS
• Recommended Settings
  • RFMXINSTR_ATTR_RECOMMENDED_ACQUISITION_TYPE
  • RFMXINSTR_ATTR_RECOMMENDED_CENTER_FREQUENCY
  • RFMXINSTR_ATTR_RECOMMENDED_NUMBER_OF_RECORDS
  • RFMXINSTR_ATTR_RECOMMENDED_TRIGGER_MINIMUM_QUIET_TIME
  • IQ
    • RFMXINSTR_ATTR_RECOMMENDED_IQ_ACQUISITION_TIME
    • RFMXINSTR_ATTR_RECOMMENDED_IQ_MINIMUM_SAMPLE_RATE
    • RFMXINSTR_ATTR_RECOMMENDED_IQ_PRE_TRIGGER_TIME
  • Spectral
    • RFMXINSTR_ATTR_RECOMMENDED_SPECTRAL_ACQUISITION_SPAN
    • RFMXINSTR_ATTR_RECOMMENDED_SPECTRAL_FFT_WINDOW
    • RFMXINSTR_ATTR_RECOMMENDED_SPECTRAL_RESOLUTION_BANDWIDTH

Data Type:	char []
Access:	read/write
Functions:	RFmxInstr_SetAttributeString RFmxInstr_GetAttributeString
Description:	Specifies the frequency reference source. You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector Strings topic for information about the string syntax. The default value for PXIe-5840 with PXIe-5653 is RefIn2, else the default value is OnboardClock. Supported devices: PXIe-5644/5645/5646, PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetFrequencyReferenceSource Set Function: RFmxInstr_SetFrequencyReferenceSource
Values:

RFMXINSTR_VAL_ONBOARD_CLOCK_STR (OnboardClock)	PXIe-5663/5663E: RFmx locks the PXIe-5663/5663E to the PXIe-5652 LO source onboard clock. Connect the REF OUT2 connector (if it exists) on the PXIe-5652 to the PXIe-5622 CLK IN terminal. On versions of the PXIe-5663/5663E that lack a REF OUT2 connector on the PXIe-5652, connect the REF IN/OUT connector on the PXIe-5652 to the PXIe-5622 CLK IN terminal. PXIe-5665: RFmx locks the PXIe-5665 to the PXIe-5653 LO source onboard clock. Connect the 100 MHz REF OUT terminal on the PXIe-5653 to the PXIe-5622 CLK IN terminal. PXIe-5668: Lock the PXIe-5668 to the PXIe-5653 LO SOURCE onboard clock. Connect the LO2 OUT connector on the PXIe-5606 to the CLK IN connector on the PXIe-5624. PXIe-5644/5645/5646, PXIe-5820/5840/5841: RFmx locks the device to its onboard clock. PXIe-5830/5831/5832: For the PXIe-5830, connect the PXIe-5820 REF IN connector to the PXIe-3621 REF OUT connector. For the PXIe-5831, connect the PXIe-5820 REF IN connector to the PXIe-3622 REF OUT connector. For PXIe-5832, connect the PXIe-5820 REF IN connector to the PXIe-3623 REF OUT connector. PXIe-5831 with PXIe-5653: Connect the PXIe-5820 REF IN connector to the PXIe-3622 REF OUT connector. Connect the PXIe-5653 REF OUT (10 MHz) connector to the PXIe-3622 REF IN connector. PXIe-5832 with PXIe-5653: Connect the PXIe-5820 REF IN connector to the PXIe-3623 REF OUT connector. Connect the PXIe-5653 REF OUT (10 MHz) connector to the PXIe-3623 REF IN connector. PXIe-5840 with PXIe-5653: Lock onto the PXIe-5653 onboard clock. Connect the REF OUT (10 MHz) connector on the PXIe-5653 to the PXIe-5840 REF IN connector. Configure open NI-RFSG sessions to the device to use RefIn for PXIe-5840 or RefIn2 for the PXIe-5840 with the PXIe-5653.
RFMXINSTR_VAL_REF_IN_STR (RefIn)	PXIe-5663/5663E: Connect the external signal to the PXIe-5652 REF IN/OUT connector. Connect the REF OUT2 connector (if it exists) on the PXIe-5652 to the PXIe-5622 CLK IN terminal. PXIe-5665: Connect the external signal to the PXIe-5653 REF IN connector. Connect the 100 MHz REF OUT terminal on the PXIe-5653 to the PXIe-5622 CLK IN connector. If your external clock signal frequency is set to a frequency other than 10 MHz, set the Frequency Reference Frequency attribute according to the frequency of your external clock signal. PXIe-5668: Connect the external signal to the PXIe-5653 REF IN connector. Connect the LO2 OUT on the PXIe-5606 to the CLK IN connector on the PXIe-5622. If your external clock signal frequency is set to a frequency other than 10 MHz, set the Frequency Reference Frequency attribute according to the frequency of your external clock signal. PXIe-5644/5645/5646, PXIe-5820/5840/5841: RFmx locks the device to the signal at the external REF IN connector. PXIe-5830/5831/5832: For PXIe-5830, connect the PXIe-5820 REF IN connector to the PXIe-3621 REF OUT connector. For PXIe-5831, connect the PXIe-5820 REF IN connector to the PXIe-3622 REF OUT connector. For PXIe-5832, connect the PXIe-5820 REF IN connector to the PXIe-3623 REF OUT connector. For PXIe-5830, lock the external signal to the PXIe-3621 REF IN connector. For PXIe-5831, lock the external signal to the PXIe-3622 REF IN connector. For PXIe-5832, lock the external signal to the PXIe-3623 REF IN connector. PXIe-5831 with PXIe-5653: Connect the PXIe-5820 REF IN connector to the PXIe-3622 REF OUT connector. Connect the PXIe-5653 REF OUT (10 MHz) connector to the PXIe-3622 REF IN connector. Lock the external signal to the PXIe-5653 REF IN connector. PXIe-5832 with PXIe-5653: Connect the PXIe-5820 REF IN connector to the PXIe-3623 REF OUT connector. Connect the PXIe-5653 REF OUT (10 MHz) connector to the PXIe-3623 REF IN connector. Lock the external signal to the PXIe-5653 REF IN connector. PXIe-5840 with PXIe-5653: Lock to the signal at the REF IN connector on the associated PXIe-5653. Connect the REF OUT (10 MHz) connector on the PXIe-5653 to the PXIe-5840 REF IN connector.
RFMXINSTR_VAL_PXI_CLK_STR (PXI_Clk)	PXIe-5668: Lock the PXIe-5653 to the PXI backplane clock. Connect the PXIe-5606 LO2 OUT to the LO2 IN connector on the PXIe-5624. PXIe-5644/5645/5646, PXIe-5663/5663E/5665, and PXIe-5820/5830/5831/5831 with PXIe-5653/5832/5832 with PXIe-5653/5840/5841/5840 with PXIe-5653: RFmx locks the device to the PXI backplane clock.
RFMXINSTR_VAL_CLK_IN_STR (ClkIn)	PXIe-5663/5663E: RFmx locks the PXIe-5663/5663E to an external 10 MHz signal. Connect the external signal to the PXIe-5622 CLK IN connector, and connect the PXIe-5622 CLK OUT connector to the FREQ REF IN connector on the PXIe-5652. PXIe-5665: RFmx locks the PXIe-5665 to an external 100 MHz signal. Connect the external signal to the PXIe-5622 CLK IN connector, and connect the PXIe-5622 CLK OUT connector to the REF IN connector on the PXIe-5653. Set the Frequency Reference Frequency attribute to 100 MHz. PXIe-5668: Lock the PXIe-5668 to an external 100 MHz signal. Connect the external signal to the CLK IN connector on the PXIe-5624, and connect the PXIe-5624 CLK OUT connector to the REF IN connector on the PXIe-5653. Set the Frequency Reference Frequency attribute to 100 MHz. PXIe-5644/5645/5646, PXIe-5820/5830/5831/5831 with PXIe-5653/5832/5832 with PXIe-5653/5840/5841/5840 with PXIe-5653: This configuration does not apply.
RFMXINSTR_VAL_REF_IN2_STR (RefIn2)	PXIe-5840 with PXIe-5653: RFmx locks the reference clock to the clock sourced at the PXIe-5840 REF IN terminal that is previously configured by an NI-RFSG session. Connect the PXIe-5840 REF OUT connector to the PXIe-5653 REF IN connector. Configure open NI-RFSG sessions to the device to use RefIn for the PXIe-5840 or OnboardClock for the PXIe-5840 with PXIe-5653. PXIe-5663/5663E/5665/5668, PXIe-5644/5645/5646, and PXIe-5820/5830/5831/5831 with PXIe-5653/5832/5832 with PXIe-5653/5840/5841: This configuration does not apply.
RFMXINSTR_VAL_PXI_CLK_MASTER_STR (PXI_ClkMaster)	PXIe-5831 with PXIe-5653: RFmx configures the PXIe-5653 to export the reference clock and configures the PXIe-5820 and PXIe-3622 to use PXI_Clk as the reference clock source. You must connect the PXIe-5653 REF OUT (10 MHz) connector to the PXI chassis REF IN connector. PXIe-5832 with PXIe-5653: RFmx configures the PXIe-5653 to export the reference clock and configures the PXIe-5820 and PXIe-3623 to use PXI_Clk as the reference clock source. You must connect the PXIe-5653 REF OUT (10 MHz) connector to the PXI chassis REF IN connector. PXIe-5840 with PXIe-5653: RFmx configures the PXIe-5653 to export the reference clock, and configures the PXIe-5840 to use PXI_Clk. For best performance, configure all other devices in the system to use PXI_Clk as the reference clock source. You must connect the PXIe-5653 REF OUT (10 MHz) connector to the PXIe-5840 REF IN connector for this configuration. PXIe-5663/5663E/5665/5668, PXIe-5644/5645/5646, PXIe-5820/5830/5831/5832/5840/5841: This configuration does not apply.

Data Type:	float64
Access:	read/write
Functions:	RFmxInstr_SetAttributeF64 RFmxInstr_GetAttributeF64
Description:	Specifies the Reference Clock rate, when the Frequency Reference Source attribute is set to ClkIn or RefIn. This value is expressed in Hz. You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector Strings topic for information about the string syntax. The default value is 10 MHz. Valid values PXIe-5644/5645/5646, PXIe-5663/5663E, PXIe-5820/5830/5831/5832/5840/5841 10 MHz PXIe-5665/5668 5 MHz to 100 MHz (inclusive), in increments of 1 MHz Supported devices: PXIe-5644/5645/5646, PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetFrequencyReferenceFrequency Set Function: RFmxInstr_SetFrequencyReferenceFrequency

Data Type:	char []
Access:	read/write
Functions:	RFmxInstr_SetAttributeString RFmxInstr_GetAttributeString
Description:	Specifies a comma-separated list of the terminals at which to export the frequency reference. This attribute is not supported on a MIMO session. You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector Strings topic for information about the string syntax. The default value is RFMXINSTR_VAL_NONE_STR. Supported devices: PXIe-5644/5645/5646, PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetFrequencyReferenceExportedTerminal Set Function: RFmxInstr_SetFrequencyReferenceExportedTerminal
Values:

RFMXINSTR_VAL_NONE_STR ()	The Reference Clock is not exported. This value is not valid for the PXIe-5644/5645/5646.
RFMXINSTR_VAL_REF_OUT_STR (RefOut)	Export the clock on the REF IN/OUT terminal on the PXIe-5652, the REF OUT terminals on the PXIe-5653, or the REF OUT terminal on the PXIe-5694, PXIe-5644/5645/5646, or PXIe-5820/5830/5831/5832/5840/5841.
RFMXINSTR_VAL_REF_OUT2_STR (RefOut2)	Export the clock on the REF OUT2 terminal on the PXIe-5652. This value is valid only for the PXIe-5663E.
RFMXINSTR_VAL_CLK_OUT_STR (ClkOut)	Export the Reference Clock on the CLK OUT terminal on the Digitizer. This value is not valid for the PXIe-5644/5645/5646 or PXIe-5820/5830/5831/5832/5840/5841.

Data Type:	int32
Access:	read/write
Functions:	RFmxInstr_SetAttributeI32 RFmxInstr_GetAttributeI32
Description:	Specifies whether RFmx computes the RF attenuation. If you set this attribute to True, RFmx chooses an attenuation setting based on the reference level configured on the personality. You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector Strings topic for information about the string syntax. The default value is RFMXINSTR_VAL_RF_ATTENUATION_AUTO_TRUE. Supported devices: PXIe-5663/5663E, PXIe-5665/5668 Get Function: RFmxInstr_GetRFAttenuationAuto Set Function: RFmxInstr_SetRFAttenuationAuto
Values:

RFMXINSTR_VAL_RF_ATTENUATION_AUTO_FALSE (0)	Specifies that RFmx uses the value configured using RF Attenuation Value attribute.
RFMXINSTR_VAL_RF_ATTENUATION_AUTO_TRUE (1)	Specifies that RFmx computes the RF attenuation.

Data Type:	float64
Access:	read/write
Functions:	RFmxInstr_SetAttributeF64 RFmxInstr_GetAttributeF64
Description:	Specifies the nominal attenuation setting for all attenuators before the first mixer in the RF signal chain. This value is expressed in dB. RFmx uses the value of this attribute as the attenuation setting when you set the RFMXINSTR_ATTR_RF_ATTENUATION_AUTO attribute to RFMXINSTR_VAL_RF_ATTENUATION_AUTO_FALSE. You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector Strings topic for information about the string syntax. PXIe-5663/5663E You can change the attenuation value to modify the amount of noise and distortion. Higher attenuation levels increase the noise level but decreases distortion; lower attenuation levels decrease the noise level but increases distortion. PXIe-5603/5605/5665/5668 Refer to the PXIe-5665 or the PXIe-5668 RF Attenuation and Signal Levels topic in the NI RF Vector Signal Analyzers Help for more information about configuring attenuation. The valid values for this attribute depend on the device configuration. Supported devices: PXIe-5663/5663E/5603/5605/5665/5668 Get Function: RFmxInstr_GetRFAttenuationValue Set Function: RFmxInstr_SetRFAttenuationValue

Data Type:	int32
Access:	read/write
Functions:	RFmxInstr_SetAttributeI32 RFmxInstr_GetAttributeI32
Description:	Specifies whether RFmx chooses an attenuation setting based on the hardware settings. You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector Strings topic for information about the string syntax. The default value is RFMXINSTR_VAL_MECHANICAL_ATTENUATION_AUTO_TRUE. Supported devices: PXIe-5663/5663E/5665/5668 Get Function: RFmxInstr_GetMechanicalAttenuationAuto Set Function: RFmxInstr_SetMechanicalAttenuationAuto
Values:

RFMXINSTR_VAL_MECHANICAL_ATTENUATION_AUTO_FALSE (0)	Specifies that RFmx uses the value configured in the Mechanical Attenuation Value attribute.
RFMXINSTR_VAL_MECHANICAL_ATTENUATION_AUTO_TRUE (1)	Specifies that the measurement computes the mechanical attenuation.

Data Type:	float64
Access:	read/write
Functions:	RFmxInstr_SetAttributeF64 RFmxInstr_GetAttributeF64
Description:	Specifies the level of mechanical attenuation for the RF path. This value is expressed in dB. RFmx uses the value of this attribute as the attenuation setting when you set the RFMXINSTR_ATTR_MECHANICAL_ATTENUATION_AUTO attribute to RFMXINSTR_VAL_MECHANICAL_ATTENUATION_AUTO_FALSE. You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector Strings topic for information about the string syntax. Valid valuesPXIe-5663/5663E0, 16PXIe-5665 (3.6 GHz)0, 10, 20, 30PXIe-5665 (14 GHz), PXIe-56680, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75 Supported devices: PXIe-5663/5663E, PXIe-5665, PXIe-5668 Get Function: RFmxInstr_GetMechanicalAttenuationValue Set Function: RFmxInstr_SetMechanicalAttenuationValue

Data Type:	int32
Access:	read/write
Functions:	RFmxInstr_SetAttributeI32 RFmxInstr_GetAttributeI32
Description:	Specifies whether to reduce the effects of the instrument leakage by placing the LO outside the band of acquisition. This attribute is ignored if: the bandwidth required by the measurement is more than the available instrument bandwidth after offsetting the LO. You set the Downconverter Center Frequency or Downconverter Frequency Offset attributes. When using a DPD applied signal for performing measurements like ModAcc, PvT, or TXP, you must set this attribute to False when the LO Source attribute is set to Automatic_SG_SA_Shared. You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector Strings topic for information about the string syntax. The default value for PXIe-5830/5831/5832/5840/5841 is True, else the default value is False. Supported devices: PXIe-5644/5645/5646, PXIe-5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetLOLeakageAvoidanceEnabled Set Function: RFmxInstr_SetLOLeakageAvoidanceEnabled
Values:

RFMXINSTR_VAL_LO_LEAKAGE_AVOIDANCE_ENABLED_FALSE (0)	RFmx does not modify the Downconverter Frequency Offset attribute.
RFMXINSTR_VAL_LO_LEAKAGE_AVOIDANCE_ENABLED_TRUE (1)	RFmx calculates the required LO offset based on the measurement configuration and appropriately sets the Downconverter Frequency Offset attribute.

Data Type:	char []
Access:	read/write
Functions:	RFmxInstr_SetAttributeString RFmxInstr_GetAttributeString
Description:	Specifies the local oscillator (LO) signal source used to downconvert the RF input signal. If this attribute is set to '' (empty string), RFmx uses the internal LO source. For PXIe-5830/5831/5832, if you want to configure or read on LO1 or LO2 channel, use 'lo1' or 'lo2' as part of the selector string. You do not need to use a selector string or use 'lo1, lo2' as part of the selector string if you want to configure this attribute for both channels. You can also use RFmxInstr_BuildLOString utility function to create the LO String. For all other devices, lo channel string is not allowed. If no signal downconversion is required, this attribute is ignored.This attribute is not supported on a MIMO session. You do not need to use a selector string, if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read on that signal instance. Refer to the Selector string topic for information about the string syntax. The default value is RFMXINSTR_VAL_LO_SOURCE_ONBOARD. Supported Devices: PXIe-5644/5645/5646, PXIe-5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetLOSource Set Function: RFmxInstr_SetLOSource
Values:

RFMXINSTR_VAL_LO_SOURCE_NONE (None)	Specifies that no LO source is required to downconvert the RF input signal.
RFMXINSTR_VAL_LO_SOURCE_ONBOARD (Onboard)	Specifies that the onboard synthesizer is used to generate the LO signal that downconverts the RF input signal.
RFMXINSTR_VAL_LO_SOURCE_LO_IN (LO_In)	Specifies that the LO source used to downconvert the RF input signal is connected to the LO IN connector on the front panel.
RFMXINSTR_VAL_LO_SOURCE_SECONDARY (Secondary)	Specifies that the LO source uses the PXIe-5830/5831/5832/5840 internal LO. This value is valid on only the PXIe-5840 with PXIe-5653, PXIe-5831 with PXIe-5653 (LO1 stage only), or PXIe-5832 with PXIe-5653 (LO1 stage only).
RFMXINSTR_VAL_LO_SOURCE_SG_SA_SHARED (SG_SA_Shared)	Specifies that the internal LO can be shared between RFmx and RFSG sessions. RFmx selects an internal synthesizer and the synthesizer signal is switched to both the RX and TX mixers. This value is valid only on PXIe-5830/5831/5832/5841.
RFMXINSTR_VAL_LO_SOURCE_AUTOMATIC_SG_SA_SHARED (Automatic_SG_SA_Shared)	Specifies whether RFmx automatically configures the signal analyzer to use the LO utilized by the signal generator on the same vector signal transceiver (VST) based on the configured measurements. When using instruments that do not have LOs with excellent phase noise and to minimize the contribution of the instrument's phase noise affecting your measurements, NI recommends to share the LO between the signal generator (SG) and the signal analyzer (SA). This value is recommended in test setups that use a VST with NI-RFSG to generate a signal at the DUT's input and RFmx to measure the signal at the DUT's output. This value automatically: determines whether the SG LO can be shared with SA based on the test instrument used, selected measurement, and the measurement settings.configures instrument specific attributes on SA to share the LO between the generator and analyzer, whenever possible. To enable automatically sharing SG LO with SA, you must first setup the required device specific physical connections mentioned below and then follow the steps in the recommended order. PXIe-5840/5841: SG LO is shared with SA via an external path. Hence, you must connect RF Out LO Out to RF In LO In using a cable. PXIe-5830/5831/5832: SG LO is shared with SA via an internal path. Hence, an external cable connection is not required. NI recommends the following order of steps: 1. Set LO Source attribute to Automatic SG SA Shared in NI-RFSG (or enable Automatic SG SA shared LO on NI-RFSG Playback Library) 2. Set RFMXINSTR_ATTR_LO_SOURCE attribute to RFMXINSTR_VAL_LO_SOURCE_AUTOMATIC_SG_SA_SHARED in RFmx 3. Configure any additional settings on RFSG and RFmx, including selecting waveforms 4. Initiate RFSG 5. Initiate RFmx. Note: When using a DPD applied signal for performing measurements like ModAcc, PvT, or TXP, you must set the RFMXINSTR_ATTR_LO_LEAKAGE_AVOIDANCE_ENABLED attribute to RFMXINSTR_VAL_FALSE and RFMXINSTR_ATTR_LO_SOURCE attribute to RFMXINSTR_VAL_LO_SOURCE_AUTOMATIC_SG_SA_SHARED. Refer to following functions for examples in RFmx WLAN and RFmx NR that show the behavior of Automatic SG SA Shared LO. (LabVIEW directory)\examples\RFmx\WLAN\RFmxWLAN FEM Test with Automatic SG SA Shared LO.vi(LabVIEW directory)\examples\RFmx\NR\RFmxNR FEM Test with Automatic SG SA Shared LO.vi This value is valid only on PXIe-5830/5831/5832/5840/5841.

Data Type:	float64
Access:	read/write
Functions:	RFmxInstr_SetAttributeF64 RFmxInstr_GetAttributeF64
Description:	Specifies the LO signal frequency for the configured center frequency. This value is expressed in Hz. If you are using the vector signal analyzer with an external LO, use this attribute to specify the LO frequency that the external LO source passes into the LO IN or LO1 IN connector on the RF downconverter front panel. If you are using an external LO, reading the value of this attribute after configuring the rest of the parameters returns the LO frequency needed by the device. You can set this attribute to the actual LO frequency because RFmx corrects for any difference between expected and actual LO frequencies. For PXIe-5830/5831/5832, if you want to configure or read on LO1 or LO2 channel, use 'lo1' or 'lo2' as part of the selector string. You do not need to use a selector string or use 'lo1, lo2' as part of the selector string if you want to configure this attribute for both channels. You can also use RFmxInstr_BuildLOString utility function to create the LO String. For all other devices, lo channel string is not allowed.This attribute is not supported on a MIMO session. You do not need to use a selector string, if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read on that signal instance. Refer to the Selector Strings topic for information about the string syntax. The default value is 0. Supported Devices: PXIe-5644/5645/5646, PXIe-5663/5663E/5665/5668, PXIe-5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetLOFrequency Set Function: RFmxInstr_SetLOFrequency

Data Type:	int32
Access:	read/write
Functions:	RFmxInstr_SetAttributeI32 RFmxInstr_GetAttributeI32
Description:	Specifies whether to enable the LO OUT terminals on the installed devices. For PXIe-5830/5831/5832, if you want to configure or read on LO1 or LO2 channel, use 'lo1' or 'lo2' as part of the selector string. You do not need to use a selector string or use 'lo1, lo2' as part of the selector string if you want to configure this attribute for both channels. You can also use RFmxInstr_BuildLOString utility function to create the LO String. For all other devices, lo channel string is not allowed.This attribute is not supported on a MIMO session. You do not need to use a selector string, if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read on that signal instance. Refer to the Selector string topic for information about the string syntax. TRUE Enables the LO OUT terminals. FALSE Disables the LO OUT terminals Default value:PXIe-5663/5663E: TRUE PXIe-5644/5645/5646, PXIe-5665/5668, PXIe-5830/5831/5832/5840/5841: FALSE Supported devices: PXIe-5644/5645/5646, PXIe-5663/5663E/5665/5668, PXIe-5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetLOExportEnabled Set Function: RFmxInstr_SetLOExportEnabled

Data Type:	int32
Access:	read/write
Functions:	RFmxInstr_SetAttributeI32 RFmxInstr_GetAttributeI32
Description:	Specifies whether to enable the LO2 OUT terminals in the installed devices. Set this attribute to Enabled to export the 4 GHz LO signal from the LO2 IN terminal to the LO2 OUT terminal. You can also export the LO2 signal by setting the RFMXINSTR_ATTR_LO_EXPORT_ENABLED attribute to TRUE. This attribute is not supported on a MIMO session. You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector Strings topic for information about the string syntax. The default value is RFMXINSTR_VAL_LO2_EXPORT_DISABLED. Supported Devices: PXIe-5665/5668 Get Function: RFmxInstr_GetLO2ExportEnabled Set Function: RFmxInstr_SetLO2ExportEnabled
Values:

RFMXINSTR_VAL_LO2_EXPORT_DISABLED (0)	Disables the LO2 OUT terminals.
RFMXINSTR_VAL_LO2_EXPORT_ENABLED (1)	Enables the LO2 OUT terminals.

Data Type:	float64
Access:	read/write
Functions:	RFmxInstr_SetAttributeF64 RFmxInstr_GetAttributeF64
Description:	Specifies the power level expected at the LO IN terminal when the RFMXINSTR_ATTR_LO_SOURCE attribute is set to RFMXINSTR_VAL_LO_SOURCE_LO_IN. This value is expressed in dBm. For PXIe-5830/5831/5832, if you want to configure or read on LO1 or LO2 channel, use 'lo1' or 'lo2' as part of the selector string. You do not need to use a selector string or use 'lo1, lo2' as part of the selector string if you want to configure this attribute for both channels. You can also use RFmxInstr_BuildLOString utility function to create the LO String. For all other devices, lo channel string is not allowed.This attribute is not supported on a MIMO session. You do not need to use a selector string, if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read on that signal instance. Refer to the Selector string topic for information about the string syntax. For PXIe-5644/5645/5646, this attribute is always read-only. The default value is 0. Supported devices: PXIe-5644/5645/5646, PXIe-5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetLOInPower Set Function: RFmxInstr_SetLOInPower

Data Type:	float64
Access:	read/write
Functions:	RFmxInstr_SetAttributeF64 RFmxInstr_GetAttributeF64
Description:	Specifies the power level of the signal at the LO OUT terminal when the RFMXINSTR_ATTR_LO_EXPORT_ENABLED attribute is set to TRUE. This value is expressed in dBm. For PXIe-5830/5831/5832, if you want to configure or read on LO1 or LO2 channel, use 'lo1' or 'lo2' as part of the selector string. You do not need to use a selector string or use 'lo1, lo2' as part of the selector string if you want to configure this attribute for both channels. You can also use RFmxInstr_BuildLOString utility function to create the LO String. For all other devices, lo channel string is not allowed. This attribute is not supported on a MIMO session. You do not need to use a selector string, if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read on that signal instance. Refer to the Selector string topic for information about the string syntax. The default value is 0. Supported devices: PXIe-5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetLOOutPower Set Function: RFmxInstr_SetLOOutPower

Data Type:	int32
Access:	read/write
Functions:	RFmxInstr_SetAttributeI32 RFmxInstr_GetAttributeI32
Description:	Makes tradeoffs between tuning speed and phase noise. This attribute is not supported if you are using an external LO. For PXIe-5830/5831/5832, if you want to configure or read on LO1 or LO2 channel, use 'lo1' or 'lo2' as part of the selector string. You do not need to use a selector string or use 'lo1, lo2' as part of the selector string if you want to configure this attribute for both channels. You can also use RFmxInstr_BuildLOString utility function to create the LO String. For all other devices, lo channel string is not allowed. This attribute is not supported on a MIMO session. You do not need to use a selector string, if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read on that signal instance. Refer to the Selector string topic for information about the string syntax.The PXIe-5830/5831/5832/5840/5841 supports only Medium for this attribute. Default value: Normal for PXIe-5663/5663E/5665/5668, Medium for PXIe-5644/5645/5646 and PXIe-5830/5831/5832/5840/5841 Supported devices: PXIe-5644/5645/5646, PXIe-5663/5663E/5665/5668, PXIe-5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetTuningSpeed Set Function: RFmxInstr_SetTuningSpeed
Values:

RFMXINSTR_VAL_TUNING_SPEED_NORMAL (0)	PXIe-5665/5668: Adjusts the YIG main coil on the LO for an underdamped response. PXIe-5663/5663E/5644/5645/5646, PXIe-5840/5841: Specifies that the RF downconverter module uses a narrow loop bandwidth.
RFMXINSTR_VAL_TUNING_SPEED_MEDIUM (1)	Specifies that the RF downconverter module uses a medium loop bandwidth. This value is not supported on PXIe-5663/5663E/5665/5668 devices.
RFMXINSTR_VAL_TUNING_SPEED_FAST (2)	PXIe-5665/5668: Adjusts the YIG main coil on the LO for an overdamped response. Setting this attribute to Fast allows the frequency to settle significantly faster for some frequency transitions at the expense of increased phase noise. PXIe-5663/5663E/5644/5645/5646: Specifies that the RF downconverter module uses a wide loop bandwidth.

Data Type:	float64
Access:	read/write
Functions:	RFmxInstr_SetAttributeF64 RFmxInstr_GetAttributeF64
Description:	Specifies an offset from the center frequency value for the downconverter. Use this attribute to offset the measurement away from the LO leakage or DC Offset of analyzers that use a direct conversion architecture. You must set this attribute 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. NI recommends using the RFMXINSTR_ATTR_LO_LEAKAGE_AVOIDANCE_ENABLED attribute instead of the Downconverter Frequency Offset attribute. The RFMXINSTR_ATTR_LO_LEAKAGE_AVOIDANCE_ENABLED attribute automatically configures the Downconverter Frequency Offset attribute to an appropriate offset based on the bandwidth or span of the measurement.This attribute is not supported on a MIMO session. You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector Strings topic for information about the string syntax. Default values: For spectrum acquisition types, RFmx automatically calculates the default value to avoid residual LO power. For I/Q acquisition types, the default value is 0 Hz. If the center frequency is set to a non-multiple of LO Frequency Step Size attribute, this attribute is set to compensate for the difference. The following valid values correspond to their respective devices: PXIe-5646-100 MHz to +100 MHz PXIe-5830/5831/5832/5840/5841-500 MHz to +500 MHz Other devices-42 MHz to +42 MHz Supported Devices: PXIe-5644/5645/5646, PXIe-5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetDownconverterFrequencyOffset Set Function: RFmxInstr_SetDownconverterFrequencyOffset

Data Type:	float64
Access:	read/write
Functions:	RFmxInstr_SetAttributeF64 RFmxInstr_GetAttributeF64
Description:	Enables in-band retuning and specifies the current frequency of the RF downconverter. This value is expressed in Hz. After you set this attribute, the RF downconverter is locked to that frequency until the value is changed or the attribute is reset. Locking the downconverter to a fixed value allows frequencies within the instantaneous bandwidth of the downconverter to be measured without the overhead of retuning the LO and waiting for the LO to settle. This method is called in-band retuning and it has the highest benefit on analyzers that have larger LO settling times. After setting the downconverter center frequency, you can set the center frequency to the frequencies at which you want to take the measurements. If you want to avoid the LO leakage or DC offset of analyzers that use a direct conversion architecture, it is more convenient to use the RFMXINSTR_ATTR_DOWNCONVERTER_FREQUENCY_OFFSET or RFMXINSTR_ATTR_LO_LEAKAGE_AVOIDANCE_ENABLED attributes. If you set this attribute, any measurements outside the instantaneous bandwidth of the device are invalid. To disable in-band retuning, reset this attribute or call the RFmxInstr_ResettoDefault function.This attribute is not supported on a MIMO session. You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector Strings topic for information about the string syntax. The default value is the carrier frequency or spectrum center frequency. Valid Values: Any supported tuning frequency of the device. PXIe-5820: The only valid value for this attribute is 0 Hz. Supported devices: PXIe-5644/5645/5646, PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetDownconverterCenterFrequency Set Function: RFmxInstr_SetDownconverterCenterFrequency

Data Type:	int32
Access:	read/write
Functions:	RFmxInstr_SetAttributeI32 RFmxInstr_GetAttributeI32
Description:	Specifies the LO injection side. This attribute is not supported on a MIMO session.You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector Strings topic for information about the string syntax. PXIe-5663/5663E For frequencies below 517.5 MHz or above 6.4125 GHz, the LO injection side is fixed, and RFmx returns an error if you specify an incorrect value. If you do not configure this attribute, RFmx selects the default LO injection side based on the downconverter center frequency. Reset this attribute to return to automatic behavior. PXIe-5665 (3.6 GHz) Setting this attribute to Low Side is not supported for this device. PXIe-5665 (14 GHz) Setting this attribute to Low Side is supported for this device for frequencies greater than 4 GHz, but this configuration is not calibrated, and device specifications are not guaranteed. PXIe-5668 Setting this attribute to Low Side is supported for some frequencies in high band, varying by the final IF frequency. This configuration is not calibrated and device specifications are not guaranteed. Default value:PXIe-5663/5663E (frequencies ( 3.0 GHz): High SidePXIe-5663/5663E (frequencies )= 3.0 GHz): Low SidePXIe-5665/5668: High Side Supported devices: PXIe-5663/5663E/5665/5668 Get Function: RFmxInstr_GetLOInjectionSide Set Function: RFmxInstr_SetLOInjectionSide
Values:

RFMXINSTR_VAL_LO_INJECTION_HIGH_SIDE (0)	Configures the LO signal that the device generates at a frequency higher than the RF signal. This LO frequency is given by the following formula: fLO = fRF + fIF
RFMXINSTR_VAL_LO_INJECTION_LOW_SIDE (1)	Configures the LO signal that the device generates at a frequency lower than the RF signal. This LO frequency is given by the following formula: fLO = fRF - fIF

Data Type:	float64
Access:	read/write
Functions:	RFmxInstr_SetAttributeF64 RFmxInstr_GetAttributeF64
Description:	Specifies the step size for tuning the LO phase-locked loop (PLL). You can only tune the LO frequency in multiples of the LO Frequency Step Size attribute. Therefore, the LO frequency can be offset from the requested center frequency by as much as half of the LO Frequency Step Size attribute. This offset is corrected by digitally frequency shifting the LO frequency to the value requested in Downconverter Center Frequency attribute. For PXIe-5831 with PXIe-5653, PXIe-5832 with PXIe-5653, and PXIe-5840 with PXIe-5653, this attribute is ignored if PXIe-5653 is used as the LO source. The valid values for this attribute depend on the RFMXINSTR_ATTR_LO_PLL_FRACTIONAL_MODE attribute. PXIe-5644/5645/5646: If you set the RFMXINSTR_ATTR_LO_PLL_FRACTIONAL_MODE attribute to RFMXINSTR_VAL_LO_PLL_FRACTIONAL_MODE_DISABLED, the specified value is coerced to the nearest valid value. PXIe-5840: If you set the RFMXINSTR_ATTR_LO_PLL_FRACTIONAL_MODE attribute to RFMXINSTR_VAL_LO_PLL_FRACTIONAL_MODE_DISABLED, the specified value is coerced to the nearest valid value that is less than or equal to the desired step size. This attribute is not supported on a MIMO session. You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector Strings topic for information about the string syntax. RFMXINSTR_ATTR_LO_PLL_FRACTIONAL_MODE Attribute Setting LO Frequency Step Size Attribute Valid Values on PXIe-5644/5645 LO Frequency Step Size Attribute Valid Values on PXIe-5646 LO Frequency Step Size Attribute Valid Values on PXIe-5840/5841 LO Frequency Step Size Attribute Valid Values on PXIe-5830/5831/5832 LO1 LO2 Enabled 50 kHz to 24 MHz 50 kHz to 25 MHz 50 kHz to 100 MHz 8 Hz to 400 MHz 4 kHz to 400 MHz Disabled 4 MHz, 5 MHz, 6 MHz, 12 MHz, 24 MHz 2 MHz, 5 MHz, 10 MHz, 25 MHz 1 MHz, 5 MHz, 10 MHz, 25 MHz, 50 MHz, 100 MHz -- -- Default valuesPXIe-5644/5645/5646200 kHzPXIe-58302 MHz PXIe-5831/5832 (RF port)8 MHz PXIe-5831/5832 (IF port)2 MHz, 4 MHzPXIe-5840/5841500 kHzThe default value for PXIe-5831/5832 depends on the frequency range of the selected port for your instrument configuration. Use RFmxInstr Get Available Ports function to get the valid port names. Supported devices: PXIe-5644/5645/5646, PXIe-5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetLOFrequencyStepSize Set Function: RFmxInstr_SetLOFrequencyStepSize

Data Type:	float64
Access:	read/write
Functions:	RFmxInstr_SetAttributeF64 RFmxInstr_GetAttributeF64
Description:	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. Do not set this attribute with the LO Frequency Step Size attribute. This attribute is not supported on a MIMO session. You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector Strings topic for information about the string syntax. The default value is 1 MHz. Supported devices: PXIe-5830/5831/5832 Get Function: RFmxInstr_GetLOVCOFrequencyStepSize Set Function: RFmxInstr_SetLOVCOFrequencyStepSize

Data Type:	int32
Access:	read/write
Functions:	RFmxInstr_SetAttributeI32 RFmxInstr_GetAttributeI32
Description:	Specifies whether to use fractional mode for the LO phase-locked loop (PLL). Fractional mode provides a finer frequency step resolution, but may result in non harmonic spurs. Refer to the specifications document of your device for more information about fractional mode and non harmonic spurs. For PXIe-5830/5831/5832, if you want to configure or read on LO1 or LO2 channel, use 'lo1' or 'lo2' as part of the selector string. You do not need to use a selector string or use 'lo1, lo2' as part of the selector string if you want to configure this attribute for both channels. You can also use RFmxInstr_BuildLOString utility function to create the LO String. For all other devices, lo channel string is not allowed.This attribute is not supported on a MIMO session. You do not need to use a selector string, if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read on that signal instance. Refer to the Selector string topic for information about the string syntax. The RFMXINSTR_ATTR_LO_PLL_FRACTIONAL_MODE attribute is applicable only when using the internal LO. For PXIe-5831 with PXIe-5653, PXIe-5832 with PXIe-5653, and PXIe-5840 with PXIe-5653, this attribute is ignored if the PXIe-5653 is used as the LO source. The default value is RFMXINSTR_VAL_LO_PLL_FRACTIONAL_MODE_ENABLED. Supported devices: PXIe-5644/5645/5646, PXIe-5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetLOPLLFractionalMode Set Function: RFmxInstr_SetLOPLLFractionalMode
Values:

RFMXINSTR_VAL_LO_PLL_FRACTIONAL_MODE_DISABLED (0)	Indicates that the attribute is disabled.
RFMXINSTR_VAL_LO_PLL_FRACTIONAL_MODE_ENABLED (1)	Indicates that the attribute is enabled.

Data Type:	char []
Access:	read/write
Functions:	RFmxInstr_SetAttributeString RFmxInstr_GetAttributeString
Description:	Specifies the destination terminal for the exported Reference Trigger. You can also choose not to export any signal. This attribute is not supported on a MIMO session.You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector Strings topic for information about the string syntax. The default value is Do not export signal. Supported devices: PXIe-5644/5645/5646 and PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetTriggerExportOutputTerminal Set Function: RFmxInstr_SetTriggerExportOutputTerminal
Values:

RFMXINSTR_VAL_DO_NOT_EXPORT_STR ()	Does not export the signal.
RFMXINSTR_VAL_CLK_OUT_STR (ClkOut)	Exports the signal to the CLK OUT connector on the PXIe-5622/5624 front panel.
RFMXINSTR_VAL_REF_OUT_STR (RefOut)	Exports the signal to the REF IN/OUT terminal on PXIe-5652, and the REF OUT terminal on PXIe-5644/5645/5646 and PXIe-5820/5830/5831/5832/5840/5841.
RFMXINSTR_VAL_REF_OUT2_STR (RefOut2)	Exports the signal to the REF OUT2 terminal on the LO. This connector exists on only PXIe-5652.
RFMXINSTR_VAL_PFI0_STR (PFI0)	Exports the signal to the PFI 0 connector on PXIe-5142 and PXIe-5624.
RFMXINSTR_VAL_PFI1_STR (PFI1)	Exports the signal to the PFI 1 connector on PXIe-5142 and PXIe-5622.
RFMXINSTR_VAL_PXI_TRIG0_STR (PXI_Trig0)	Exports the signal to the PXI trigger line 0.
RFMXINSTR_VAL_PXI_TRIG1_STR (PXI_Trig1)	Exports the signal to the PXI trigger line 1.
RFMXINSTR_VAL_PXI_TRIG2_STR (PXI_Trig2)	Exports the signal to the PXI trigger line 2.
RFMXINSTR_VAL_PXI_TRIG3_STR (PXI_Trig3)	Exports the signal to the PXI trigger line 3.
RFMXINSTR_VAL_PXI_TRIG4_STR (PXI_Trig4)	Exports the signal to the PXI trigger line 4.
RFMXINSTR_VAL_PXI_TRIG5_STR (PXI_Trig5)	Exports the signal to the PXI trigger line 5.
RFMXINSTR_VAL_PXI_TRIG6_STR (PXI_Trig6)	Exports the signal to the PXI trigger line 6.
RFMXINSTR_VAL_PXI_TRIG7_STR (PXI_Trig7)	Exports the signal to the PXI trigger line 7.
RFMXINSTR_VAL_PXI_STAR_STR (PXI_STAR)	Exports the signal to the PXI star trigger line. This value is not valid for the PXIe-5644/5645/5646.
RFMXINSTR_VAL_PXIE_DSTARC_STR (PXIe_DStarC)	Exports the signal to the PXIe DStar C trigger line. This value is valid on only for PXIe-5820/5830/5831/5832/5840/5841.

Data Type:	char []
Access:	read only
Functions:	RFmxInstr_GetAttributeString
Description:	Returns the fully qualified signal name as a string. This attribute is not supported on a MIMO session. The standard format is as follows:PXIe-5820/5840/5841: /ModuleName/ai/0/RefTrigger, where ModuleName is the name of your device in MAX.PXIe-5830/5831/5832: /BasebandModule/ai/0/RefTrigger, where BasebandModule is the name of your device in MAX.All other devices: /DigitizerName/RefTrigger, where DigitizerName is the name of your associated digitizer module in MAX. You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector Strings topic for information about the string syntax. Supported devices: PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetTriggerTerminalName

Data Type:	int32
Access:	read/write
Functions:	RFmxInstr_SetAttributeI32 RFmxInstr_GetAttributeI32
Description:	Specifies whether the start trigger is a digital edge or a software trigger. You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector Strings topic for information about the string syntax. The default value is RFMXINSTR_VAL_START_TRIGGER_TYPE_NONE. Supported devices: PXIe-5644/5645/5646, PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetStartTriggerType Set Function: RFmxInstr_SetStartTriggerType
Values:

RFMXINSTR_VAL_START_TRIGGER_TYPE_NONE (0)	No start trigger is configured.
RFMXINSTR_VAL_START_TRIGGER_TYPE_DIGITAL_EDGE (1)	The start trigger is not asserted until a digital edge is detected. The source of the digital edge is specified by the RFMXINSTR_ATTR_START_TRIGGER_DIGITAL_EDGE_SOURCE attribute.
RFMXINSTR_VAL_START_TRIGGER_TYPE_SOFTWARE (3)	The start trigger is not asserted until a software trigger occurs. You can assert the software trigger by calling the RFmxInstr_SendSoftwareEdgeTrigger function.

Data Type:	char []
Access:	read/write
Functions:	RFmxInstr_SetAttributeString RFmxInstr_GetAttributeString
Description:	Specifies the source terminal for the start trigger. This attribute is used only when you set the RFMXINSTR_ATTR_START_TRIGGER_TYPE attribute to RFMXINSTR_VAL_START_TRIGGER_TYPE_DIGITAL_EDGE. You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector Strings topic for information about the string syntax. The default value of this attribute is '' (empty string). Supported devices: PXIe-5644/5645/5646, PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetStartTriggerDigitalEdgeSource Set Function: RFmxInstr_SetStartTriggerDigitalEdgeSource
Values:

RFMXINSTR_VAL_PFI0_STR (PFI0)	The trigger is received on PFI 0.
RFMXINSTR_VAL_PFI1_STR (PFI1)	The trigger is received on PFI 1.
RFMXINSTR_VAL_PXI_TRIG0_STR (PXI_Trig0)	The trigger is received on PXI trigger line 0.
RFMXINSTR_VAL_PXI_TRIG1_STR (PXI_Trig1)	The trigger is received on PXI trigger line 1.
RFMXINSTR_VAL_PXI_TRIG2_STR (PXI_Trig2)	The trigger is received on PXI trigger line 2.
RFMXINSTR_VAL_PXI_TRIG3_STR (PXI_Trig3)	The trigger is received on PXI trigger line 3.
RFMXINSTR_VAL_PXI_TRIG4_STR (PXI_Trig4)	The trigger is received on PXI trigger line 4.
RFMXINSTR_VAL_PXI_TRIG5_STR (PXI_Trig5)	The trigger is received on PXI trigger line 5.
RFMXINSTR_VAL_PXI_TRIG6_STR (PXI_Trig6)	The trigger is received on PXI trigger line 6.
RFMXINSTR_VAL_PXI_TRIG7_STR (PXI_Trig7)	The trigger is received on PXI trigger line 7.
RFMXINSTR_VAL_PXI_STAR_STR (PXI_STAR)	The trigger is received on the PXI star trigger line. This value is not valid for PXIe-5644/5645/5646.
RFMXINSTR_VAL_PXIE_DSTARB_STR (PXIe_DStarB)	The trigger is received on the PXIe DStar B trigger line. This value is valid only for PXIe-5820/5830/5831/5832/5840/5841.
RFMXINSTR_VAL_TIMER_EVENT (TimerEvent)	The trigger is received from the timer event. This value is valid only for PXIe-5820/5840/5841 and for digital edge advance triggers on PXIe-5663E/5665.

Data Type:	int32
Access:	read/write
Functions:	RFmxInstr_SetAttributeI32 RFmxInstr_GetAttributeI32
Description:	Specifies the active edge for the start trigger. This attribute is used only when you set the RFMXINSTR_ATTR_START_TRIGGER_TYPE attribute to RFMXINSTR_VAL_START_TRIGGER_TYPE_DIGITAL_EDGE. You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector Strings topic for information about the string syntax. The default value is RFMXINSTR_VAL_START_TRIGGER_DIGITAL_EDGE_RISING_EDGE. Supported devices: PXIe-5644/5645/5646, PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetStartTriggerDigitalEdge Set Function: RFmxInstr_SetStartTriggerDigitalEdge
Values:

RFMXINSTR_VAL_START_TRIGGER_DIGITAL_EDGE_RISING_EDGE (0)	The trigger asserts on the rising edge of the signal.
RFMXINSTR_VAL_START_TRIGGER_DIGITAL_EDGE_FALLING_EDGE (1)	The trigger asserts on the falling edge of the signal.

Data Type:	char []
Access:	read/write
Functions:	RFmxInstr_SetAttributeString RFmxInstr_GetAttributeString
Description:	Specifies the destination terminal for the exported start trigger. You can also choose not to export any signal. This attribute is not supported on a MIMO session. You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector Strings topic for information about the string syntax. The default value is Do not export signal. Supported devices: PXIe-5644/5645/5646, PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetStartTriggerExportOutputTerminal Set Function: RFmxInstr_SetStartTriggerExportOutputTerminal
Values:

RFMXINSTR_VAL_DO_NOT_EXPORT_STR ()	Does not export the signal.
RFMXINSTR_VAL_CLK_OUT_STR (ClkOut)	Exports the signal to the CLK OUT connector on the PXIe-5622/5624 front panel.
RFMXINSTR_VAL_REF_OUT_STR (RefOut)	Exports the signal to the REF IN/OUT terminal on PXIe-5652, and the REF OUT terminal on PXIe-5644/5645/5646 and PXIe-5820/5830/5831/5832/5840/5841.
RFMXINSTR_VAL_REF_OUT2_STR (RefOut2)	Exports the signal to the REF OUT2 terminal on the LO. This connector exists only on PXIe-5652.
RFMXINSTR_VAL_PFI0_STR (PFI0)	Exports the signal to the PFI 0 connector.
RFMXINSTR_VAL_PFI1_STR (PFI1)	Exports the signal to the PFI 1 connector on PXIe-5142 and PXIe-5622.
RFMXINSTR_VAL_PXI_TRIG0_STR (PXI_Trig0)	Exports the signal to the PXI trigger line 0.
RFMXINSTR_VAL_PXI_TRIG1_STR (PXI_Trig1)	Exports the signal to the PXI trigger line 1.
RFMXINSTR_VAL_PXI_TRIG2_STR (PXI_Trig2)	Exports the signal to the PXI trigger line 2.
RFMXINSTR_VAL_PXI_TRIG3_STR (PXI_Trig3)	Exports the signal to the PXI trigger line 3.
RFMXINSTR_VAL_PXI_TRIG4_STR (PXI_Trig4)	Exports the signal to the PXI trigger line 4.
RFMXINSTR_VAL_PXI_TRIG5_STR (PXI_Trig5)	Exports the signal to the PXI trigger line 5.
RFMXINSTR_VAL_PXI_TRIG6_STR (PXI_Trig6)	Exports the signal to the PXI trigger line 6.
RFMXINSTR_VAL_PXI_TRIG7_STR (PXI_Trig7)	Exports the signal to the PXI trigger line 7.
RFMXINSTR_VAL_PXI_STAR_STR (PXI_STAR)	Exports the signal to the PXI star trigger line. This value is not valid for PXIe-5644/5645/5646.
RFMXINSTR_VAL_PXIE_DSTARC_STR (PXIe_DStarC)	Exports the signal to the PXIe DStar C trigger line. This value is valid only for PXIe-5820/5830/5831/5832/5840/5841.

Data Type:	char []
Access:	read only
Functions:	RFmxInstr_GetAttributeString
Description:	Returns the fully qualified signal name as a string. The standard format is as follows:PXIe-5820/5840/5841: /ModuleName/ai/0/StartTrigger, where ModuleName is the name of your device in MAX.PXIe-5830/5831/5832: /BasebandModule/ai/0/StartTrigger, where BasebandModule is the name of your device in MAX.All other devices: /DigitizerName/StartTrigger, where DigitizerName is the name of your associated digitizer module in MAX.This attribute is not supported on a MIMO session. Supported devices: PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetStartTriggerTerminalName

Data Type:	int32
Access:	read/write
Functions:	RFmxInstr_SetAttributeI32 RFmxInstr_GetAttributeI32
Description:	Specifies whether the advance trigger is a digital edge or a software trigger. You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector Strings topic for information about the string syntax. The default value is RFMXINSTR_VAL_ADVANCE_TRIGGER_TYPE_NONE. Supported devices: PXIe-5644/5645/5646, PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetAdvanceTriggerType Set Function: RFmxInstr_SetAdvanceTriggerType
Values:

RFMXINSTR_VAL_ADVANCE_TRIGGER_TYPE_NONE (0)	No advance trigger is configured.
RFMXINSTR_VAL_ADVANCE_TRIGGER_TYPE_DIGITAL_EDGE (1)	The advance trigger is not asserted until a digital edge is detected. The source of the digital edge is specified with the RFMXINSTR_ATTR_ADVANCE_TRIGGER_DIGITAL_EDGE_SOURCE attribute.
RFMXINSTR_VAL_ADVANCE_TRIGGER_TYPE_SOFTWARE (3)	The advance trigger is not asserted until a software trigger occurs. You can assert the software trigger by calling the RFmxInstr_SendSoftwareEdgeTrigger function.

Data Type:	char []
Access:	read/write
Functions:	RFmxInstr_SetAttributeString RFmxInstr_GetAttributeString
Description:	Specifies the source terminal for the advance trigger. This attribute is used only when the RFMXINSTR_ATTR_ADVANCE_TRIGGER_TYPE attribute is set to RFMXINSTR_VAL_ADVANCE_TRIGGER_TYPE_DIGITAL_EDGE. You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector Strings topic for information about the string syntax. The default value of this attribute is '' (empty string). Supported devices: PXIe-5644/5645/5646, PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetAdvanceTriggerDigitalEdgeSource Set Function: RFmxInstr_SetAdvanceTriggerDigitalEdgeSource
Values:

RFMXINSTR_VAL_PFI0_STR (PFI0)	The trigger is received on PFI 0.
RFMXINSTR_VAL_PFI1_STR (PFI1)	The trigger is received on PFI 1.
RFMXINSTR_VAL_PXI_TRIG0_STR (PXI_Trig0)	The trigger is received on PXI trigger line 0.
RFMXINSTR_VAL_PXI_TRIG1_STR (PXI_Trig1)	The trigger is received on PXI trigger line 1.
RFMXINSTR_VAL_PXI_TRIG2_STR (PXI_Trig2)	The trigger is received on PXI trigger line 2.
RFMXINSTR_VAL_PXI_TRIG3_STR (PXI_Trig3)	The trigger is received on PXI trigger line 3.
RFMXINSTR_VAL_PXI_TRIG4_STR (PXI_Trig4)	The trigger is received on PXI trigger line 4.
RFMXINSTR_VAL_PXI_TRIG5_STR (PXI_Trig5)	The trigger is received on PXI trigger line 5.
RFMXINSTR_VAL_PXI_TRIG6_STR (PXI_Trig6)	The trigger is received on PXI trigger line 6.
RFMXINSTR_VAL_PXI_TRIG7_STR (PXI_Trig7)	The trigger is received on PXI trigger line 7.
RFMXINSTR_VAL_PXI_STAR_STR (PXI_STAR)	The trigger is received on the PXI star trigger line. This value is not valid for PXIe-5644/5645/5646.
RFMXINSTR_VAL_PXIE_DSTARB_STR (PXIe_DStarB)	The trigger is received on the PXIe DStar B trigger line. This value is valid only for PXIe-5820/5830/5831/5832/5840/5841.
RFMXINSTR_VAL_TIMER_EVENT (TimerEvent)	The trigger is received from the timer event. This value is valid only for PXIe-5820/5840/5841 and for digital edge advance triggers on PXIe-5663E/5665.

Data Type:	char []
Access:	read/write
Functions:	RFmxInstr_SetAttributeString RFmxInstr_GetAttributeString
Description:	Specifies the destination terminal for the exported advance trigger. You can also choose not to export any signal. This attribute is not supported on a MIMO session. You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector Strings topic for information about the string syntax. The default value is Do not export signal. Supported devices: PXIe-5644/5645/5646, PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetAdvanceTriggerExportOutputTerminal Set Function: RFmxInstr_SetAdvanceTriggerExportOutputTerminal
Values:

RFMXINSTR_VAL_DO_NOT_EXPORT_STR ()	Does not export the signal.
RFMXINSTR_VAL_CLK_OUT_STR (ClkOut)	Exports the signal to the CLK OUT connector on the PXIe-5622/5624 front panel.
RFMXINSTR_VAL_REF_OUT_STR (RefOut)	Exports the signal to the REF IN/OUT terminal on the PXIe-5652, and the REF OUT terminal on the PXIe-5644/5645/5646 and PXIe-5820/5830/5831/5832/5840/5841.
RFMXINSTR_VAL_REF_OUT2_STR (RefOut2)	Exports the signal to the REF OUT2 terminal on the LO. This connector exists only on PXIe-5652.
RFMXINSTR_VAL_PFI0_STR (PFI0)	Exports the signal to the PFI 0 connector.
RFMXINSTR_VAL_PFI1_STR (PFI1)	Exports the signal to the PFI 1 connector on PXIe-5142 and PXIe-5622.
RFMXINSTR_VAL_PXI_TRIG0_STR (PXI_Trig0)	Exports the signal to the PXI trigger line 0.
RFMXINSTR_VAL_PXI_TRIG1_STR (PXI_Trig1)	Exports the signal to the PXI trigger line 1.
RFMXINSTR_VAL_PXI_TRIG2_STR (PXI_Trig2)	Exports the signal to the PXI trigger line 2.
RFMXINSTR_VAL_PXI_TRIG3_STR (PXI_Trig3)	Exports the signal to the PXI trigger line 3.
RFMXINSTR_VAL_PXI_TRIG4_STR (PXI_Trig4)	Exports the signal to the PXI trigger line 4.
RFMXINSTR_VAL_PXI_TRIG5_STR (PXI_Trig5)	Exports the signal to the PXI trigger line 5.
RFMXINSTR_VAL_PXI_TRIG6_STR (PXI_Trig6)	Exports the signal to the PXI trigger line 6.
RFMXINSTR_VAL_PXI_TRIG7_STR (PXI_Trig7)	Exports the signal to the PXI trigger line 7.
RFMXINSTR_VAL_PXI_STAR_STR (PXI_STAR)	Exports the signal to the PXI star trigger line. This value is not valid for PXIe-5644/5645/5646.
RFMXINSTR_VAL_PXIE_DSTARC_STR (PXIe_DStarC)	Exports the signal to the PXIe DStar C trigger line. This value is valid only for PXIe-5820/5830/5831/5832/5840/5841.

Data Type:	char []
Access:	read only
Functions:	RFmxInstr_GetAttributeString
Description:	Returns the fully qualified signal name as a string. The standard format is as follows:PXIe-5820/5840/5841: /ModuleName/ai/0/AdvanceTrigger, where ModuleName is the name of your device in MAX.PXIe-5830/5831/5832: /BasebandModule/ai/0/AdvanceTrigger, where BasebandModule is the name of your device in MAX.All other devices: /DigitizerName/AdvanceTrigger, where DigitizerName is the name of your associated digitizer module in MAX.This attribute is not supported on a MIMO session. Supported devices: PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetAdvanceTriggerTerminalName

Data Type:	char []
Access:	read/write
Functions:	RFmxInstr_SetAttributeString RFmxInstr_GetAttributeString
Description:	Specifies the destination terminal for the Ready for Start event. This attribute is not supported on a MIMO session. You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector Strings topic for information about the string syntax. The default value is Do not export signal. Supported devices: PXIe-5644/5645/5646, PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetReadyForStartEventOutputTerminal Set Function: RFmxInstr_SetReadyForStartEventOutputTerminal
Values:

RFMXINSTR_VAL_DO_NOT_EXPORT_STR ()	Does not export the signal.
RFMXINSTR_VAL_CLK_OUT_STR (ClkOut)	Exports the signal to the CLK OUT connector on the PXIe-5622/5624 front panel.
RFMXINSTR_VAL_REF_OUT_STR (RefOut)	Exports the signal to the REF IN/OUT terminal on the PXIe-5652, and the REF OUT terminal on the PXIe-5644/5645/5646 and PXIe-5820/5830/5831/5832/5840/5841.
RFMXINSTR_VAL_REF_OUT2_STR (RefOut2)	Exports the signal to the REF OUT2 terminal on the LO. This connector exists only on PXIe-5652.
RFMXINSTR_VAL_PFI0_STR (PFI0)	Exports the signal to the PFI 0 connector.
RFMXINSTR_VAL_PFI1_STR (PFI1)	Exports the signal to the PFI 1 connector on PXIe-5142 and PXIe-5622.
RFMXINSTR_VAL_PXI_TRIG0_STR (PXI_Trig0)	Exports the signal to the PXI trigger line 0.
RFMXINSTR_VAL_PXI_TRIG1_STR (PXI_Trig1)	Exports the signal to the PXI trigger line 1.
RFMXINSTR_VAL_PXI_TRIG2_STR (PXI_Trig2)	Exports the signal to the PXI trigger line 2.
RFMXINSTR_VAL_PXI_TRIG3_STR (PXI_Trig3)	Exports the signal to the PXI trigger line 3.
RFMXINSTR_VAL_PXI_TRIG4_STR (PXI_Trig4)	Exports the signal to the PXI trigger line 4.
RFMXINSTR_VAL_PXI_TRIG5_STR (PXI_Trig5)	Exports the signal to the PXI trigger line 5.
RFMXINSTR_VAL_PXI_TRIG6_STR (PXI_Trig6)	Exports the signal to the PXI trigger line 6.
RFMXINSTR_VAL_PXI_TRIG7_STR (PXI_Trig7)	Exports the signal to the PXI trigger line 7.
RFMXINSTR_VAL_PXI_STAR_STR (PXI_STAR)	Exports the signal to the PXI star trigger line. This value is not valid for PXIe-5644/5645/5646.
RFMXINSTR_VAL_PXIE_DSTARC_STR (PXIe_DStarC)	Exports the signal to the PXIe DStar C trigger line. This value is valid only for PXIe-5820/5830/5831/5832/5840/5841.

Data Type:	char []
Access:	read only
Functions:	RFmxInstr_GetAttributeString
Description:	Returns the fully qualified signal name as a string. The standard format is as follows:PXIe-5820/5840/5841: /ModuleName/ai/0/ReadyForStartEvent, where ModuleName is the name of your device in MAX.PXIe-5830/5831/5832: /BasebandModule/ai/0/ReadyForStartEvent, where BasebandModule is the name of your device in MAX.All other devices: /DigitizerName/ReadyForStartEvent, where DigitizerName is the name of your associated digitizer module in MAX.This attribute is not supported on a MIMO session. Supported devices: PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetReadyForStartEventTerminalName

Data Type:	char []
Access:	read/write
Functions:	RFmxInstr_SetAttributeString RFmxInstr_GetAttributeString
Description:	Specifies the destination terminal for the Ready for Advance event. This attribute is not supported on a MIMO session. You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector Strings topic for information about the string syntax. The default value is Do not export signal. Supported devices: PXIe-5644/5645/5646, PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetReadyForAdvanceEventOutputTerminal Set Function: RFmxInstr_SetReadyForAdvanceEventOutputTerminal
Values:

RFMXINSTR_VAL_DO_NOT_EXPORT_STR ()	Does not export the signal.
RFMXINSTR_VAL_CLK_OUT_STR (ClkOut)	Exports the signal to the CLK OUT connector on the PXIe-5622/5624 front panel.
RFMXINSTR_VAL_REF_OUT_STR (RefOut)	Exports the signal to the REF IN/OUT terminal on the PXIe-5652, and the REF OUT terminal on the PXIe-5644/5645/5646 and PXIe-5820/5830/5831/5832/5840/5841.
RFMXINSTR_VAL_REF_OUT2_STR (RefOut2)	Exports the signal to the REF OUT2 terminal on the LO. This connector exists only on PXIe-5652.
RFMXINSTR_VAL_PFI0_STR (PFI0)	Exports the signal to the PFI 0 connector.
RFMXINSTR_VAL_PFI1_STR (PFI1)	Exports the signal to the PFI 1 connector on PXIe-5142 and PXIe-5622.
RFMXINSTR_VAL_PXI_TRIG0_STR (PXI_Trig0)	Exports the signal to the PXI trigger line 0.
RFMXINSTR_VAL_PXI_TRIG1_STR (PXI_Trig1)	Exports the signal to the PXI trigger line 1.
RFMXINSTR_VAL_PXI_TRIG2_STR (PXI_Trig2)	Exports the signal to the PXI trigger line 2.
RFMXINSTR_VAL_PXI_TRIG3_STR (PXI_Trig3)	Exports the signal to the PXI trigger line 3.
RFMXINSTR_VAL_PXI_TRIG4_STR (PXI_Trig4)	Exports the signal to the PXI trigger line 4.
RFMXINSTR_VAL_PXI_TRIG5_STR (PXI_Trig5)	Exports the signal to the PXI trigger line 5.
RFMXINSTR_VAL_PXI_TRIG6_STR (PXI_Trig6)	Exports the signal to the PXI trigger line 6.
RFMXINSTR_VAL_PXI_TRIG7_STR (PXI_Trig7)	Exports the signal to the PXI trigger line 7.
RFMXINSTR_VAL_PXI_STAR_STR (PXI_STAR)	Exports the signal to the PXI star trigger line. This value is not valid for PXIe-5644/5645/5646.
RFMXINSTR_VAL_PXIE_DSTARC_STR (PXIe_DStarC)	Exports the signal to the PXIe DStar C trigger line. This value is valid only for PXIe-5820/5830/5831/5832/5840/5841.

Data Type:	char []
Access:	read only
Functions:	RFmxInstr_GetAttributeString
Description:	Returns the fully qualified signal name as a string. The standard format is as follows:PXIe-5820/5840/5841: /ModuleName/ai/0/ReadyForAdvanceEvent, where ModuleName is the name of your device in MAX.PXIe-5830/5831/5832: /BasebandModule/ai/0/ReadyForAdvanceEvent, where BasebandModule is the name of your device in MAX.All other devices: /DigitizerName/ReadyForAdvanceEvent, where DigitizerName is the name of your associated digitizer module in MAX.This attribute is not supported on a MIMO session. Supported devices: PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetReadyForAdvanceEventTerminalName

Data Type:	char []
Access:	read/write
Functions:	RFmxInstr_SetAttributeString RFmxInstr_GetAttributeString
Description:	Specifies the destination terminal for the Ready for Reference event. This attribute is not supported on a MIMO session. You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector Strings topic for information about the string syntax. The default value is Do not export signal. Supported devices: PXIe-5644/5645/5646, PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetReadyForReferenceEventOutputTerminal Set Function: RFmxInstr_SetReadyForReferenceEventOutputTerminal
Values:

RFMXINSTR_VAL_DO_NOT_EXPORT_STR ()	Does not export the signal.
RFMXINSTR_VAL_CLK_OUT_STR (ClkOut)	Exports the signal to the CLK OUT connector on the PXIe-5622/5624 front panel.
RFMXINSTR_VAL_REF_OUT_STR (RefOut)	Exports the signal to the REF IN/OUT terminal on the PXIe-5652, and the REF OUT terminal on the PXIe-5644/5645/5646 and PXIe-5820/5830/5831/5832/5840/5841.
RFMXINSTR_VAL_REF_OUT2_STR (RefOut2)	Exports the signal to the REF OUT2 terminal on the LO. This connector exists only on PXIe-5652.
RFMXINSTR_VAL_PFI0_STR (PFI0)	Exports the signal to the PFI 0 connector.
RFMXINSTR_VAL_PFI1_STR (PFI1)	Exports the signal to the PFI 1 connector on PXIe-5142 and PXIe-5622.
RFMXINSTR_VAL_PXI_TRIG0_STR (PXI_Trig0)	Exports the signal to the PXI trigger line 0.
RFMXINSTR_VAL_PXI_TRIG1_STR (PXI_Trig1)	Exports the signal to the PXI trigger line 1.
RFMXINSTR_VAL_PXI_TRIG2_STR (PXI_Trig2)	Exports the signal to the PXI trigger line 2.
RFMXINSTR_VAL_PXI_TRIG3_STR (PXI_Trig3)	Exports the signal to the PXI trigger line 3.
RFMXINSTR_VAL_PXI_TRIG4_STR (PXI_Trig4)	Exports the signal to the PXI trigger line 4.
RFMXINSTR_VAL_PXI_TRIG5_STR (PXI_Trig5)	Exports the signal to the PXI trigger line 5.
RFMXINSTR_VAL_PXI_TRIG6_STR (PXI_Trig6)	Exports the signal to the PXI trigger line 6.
RFMXINSTR_VAL_PXI_TRIG7_STR (PXI_Trig7)	Exports the signal to the PXI trigger line 7.
RFMXINSTR_VAL_PXI_STAR_STR (PXI_STAR)	Exports the signal to the PXI star trigger line. This value is not valid for PXIe-5644/5645/5646.
RFMXINSTR_VAL_PXIE_DSTARC_STR (PXIe_DStarC)	Exports the signal to the PXIe DStar C trigger line. This value is valid only for PXIe-5820/5830/5831/5832/5840/5841.

Data Type:	char []
Access:	read only
Functions:	RFmxInstr_GetAttributeString
Description:	Returns the fully qualified signal name as a string. The standard format is as follows:PXIe-5820/5840/5841: /ModuleName/ai/0/ReadyForReferenceEvent, where ModuleName is the name of your device in MAX.PXIe-5830/5831/5832: /BasebandModule/ai/0/ReadyForReferenceEvent, where BasebandModule is the name of your device in MAX.All other devices: /DigitizerName/ReadyForReferenceEvent, where DigitizerName is the name of your associated digitizer module in MAX.This attribute is not supported on a MIMO session. Supported devices: PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetReadyForReferenceEventTerminalName

Data Type:	char []
Access:	read/write
Functions:	RFmxInstr_SetAttributeString RFmxInstr_GetAttributeString
Description:	Specifies the destination terminal for the End of Record event. This attribute is not supported on a MIMO session. You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector Strings topic for information about the string syntax. The default value is Do not export signal. Supported devices: PXIe-5644/5645/5646, PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetEndOfRecordEventOutputTerminal Set Function: RFmxInstr_SetEndOfRecordEventOutputTerminal
Values:

RFMXINSTR_VAL_DO_NOT_EXPORT_STR ()	Does not export the signal.
RFMXINSTR_VAL_CLK_OUT_STR (ClkOut)	Exports the signal to the CLK OUT connector on the PXIe-5622/5624 front panel.
RFMXINSTR_VAL_REF_OUT_STR (RefOut)	Exports the signal to the REF IN/OUT terminal on the PXIe-5652, and the REF OUT terminal on the PXIe-5644/5645/5646 and PXIe-5820/5830/5831/5832/5840/5841.
RFMXINSTR_VAL_REF_OUT2_STR (RefOut2)	Exports the signal to the REF OUT2 terminal on the LO. This connector exists only on PXIe-5652.
RFMXINSTR_VAL_PFI0_STR (PFI0)	Exports the signal to the PFI 0 connector.
RFMXINSTR_VAL_PFI1_STR (PFI1)	Exports the signal to the PFI 1 connector on PXIe-5142 and PXIe-5622.
RFMXINSTR_VAL_PXI_TRIG0_STR (PXI_Trig0)	Exports the signal to the PXI trigger line 0.
RFMXINSTR_VAL_PXI_TRIG1_STR (PXI_Trig1)	Exports the signal to the PXI trigger line 1.
RFMXINSTR_VAL_PXI_TRIG2_STR (PXI_Trig2)	Exports the signal to the PXI trigger line 2.
RFMXINSTR_VAL_PXI_TRIG3_STR (PXI_Trig3)	Exports the signal to the PXI trigger line 3.
RFMXINSTR_VAL_PXI_TRIG4_STR (PXI_Trig4)	Exports the signal to the PXI trigger line 4.
RFMXINSTR_VAL_PXI_TRIG5_STR (PXI_Trig5)	Exports the signal to the PXI trigger line 5.
RFMXINSTR_VAL_PXI_TRIG6_STR (PXI_Trig6)	Exports the signal to the PXI trigger line 6.
RFMXINSTR_VAL_PXI_TRIG7_STR (PXI_Trig7)	Exports the signal to the PXI trigger line 7.
RFMXINSTR_VAL_PXI_STAR_STR (PXI_STAR)	Exports the signal to the PXI star trigger line. This value is not valid for PXIe-5644/5645/5646.
RFMXINSTR_VAL_PXIE_DSTARC_STR (PXIe_DStarC)	Exports the signal to the PXIe DStar C trigger line. This value is valid only for PXIe-5820/5830/5831/5832/5840/5841.

Data Type:	char []
Access:	read only
Functions:	RFmxInstr_GetAttributeString
Description:	Returns the fully qualified signal name as a string. The standard format is as follows:PXIe-5820/5840/5841: /ModuleName/ai/0/EndOfRecordEvent, where ModuleName is the name of your device in MAX.PXIe-5830/5831/5832: /BasebandModule/ai/0/EndOfRecordEvent, where BasebandModule is the name of your device in MAX.All other devices: /DigitizerName/EndOfRecordEvent, where DigitizerName is the name of your associated digitizer module in MAX.This attribute is not supported on a MIMO session. Supported devices: PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetEndOfRecordEventTerminalName

Data Type:	char []
Access:	read/write
Functions:	RFmxInstr_SetAttributeString RFmxInstr_GetAttributeString
Description:	Specifies the destination terminal for the Done event. This attribute is not supported on a MIMO session. You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector Strings topic for information about the string syntax. The default value is Do not export signal. Supported devices: PXIe-5644/5645/5646, PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetDoneEventOutputTerminal Set Function: RFmxInstr_SetDoneEventOutputTerminal
Values:

RFMXINSTR_VAL_DO_NOT_EXPORT_STR ()	Does not export the signal.
RFMXINSTR_VAL_CLK_OUT_STR (ClkOut)	Exports the signal to the CLK OUT connector on the PXIe-5622/5624 front panel.
RFMXINSTR_VAL_REF_OUT_STR (RefOut)	Exports the signal to the REF IN/OUT terminal on the PXIe-5652, and the REF OUT terminal on the PXIe-5644/5645/5646 and PXIe-5820/5830/5831/5832/5840/5841.
RFMXINSTR_VAL_REF_OUT2_STR (RefOut2)	Exports the signal to the REF OUT2 terminal on the LO. This connector exists only on PXIe-5652.
RFMXINSTR_VAL_PFI0_STR (PFI0)	Exports the signal to the PFI 0 connector.
RFMXINSTR_VAL_PFI1_STR (PFI1)	Exports the signal to the PFI 1 connector on PXIe-5142 and PXIe-5622.
RFMXINSTR_VAL_PXI_TRIG0_STR (PXI_Trig0)	Exports the signal to the PXI trigger line 0.
RFMXINSTR_VAL_PXI_TRIG1_STR (PXI_Trig1)	Exports the signal to the PXI trigger line 1.
RFMXINSTR_VAL_PXI_TRIG2_STR (PXI_Trig2)	Exports the signal to the PXI trigger line 2.
RFMXINSTR_VAL_PXI_TRIG3_STR (PXI_Trig3)	Exports the signal to the PXI trigger line 3.
RFMXINSTR_VAL_PXI_TRIG4_STR (PXI_Trig4)	Exports the signal to the PXI trigger line 4.
RFMXINSTR_VAL_PXI_TRIG5_STR (PXI_Trig5)	Exports the signal to the PXI trigger line 5.
RFMXINSTR_VAL_PXI_TRIG6_STR (PXI_Trig6)	Exports the signal to the PXI trigger line 6.
RFMXINSTR_VAL_PXI_TRIG7_STR (PXI_Trig7)	Exports the signal to the PXI trigger line 7.
RFMXINSTR_VAL_PXI_STAR_STR (PXI_STAR)	Exports the signal to the PXI star trigger line. This value is not valid for PXIe-5644/5645/5646.
RFMXINSTR_VAL_PXIE_DSTARC_STR (PXIe_DStarC)	Exports the signal to the PXIe DStar C trigger line. This value is valid only for PXIe-5820/5830/5831/5832/5840/5841.

Data Type:	char []
Access:	read only
Functions:	RFmxInstr_GetAttributeString
Description:	Returns the fully qualified signal name as a string. The standard format is as follows:PXIe-5820/5840/5841: /ModuleName/ai/0/DoneEvent, where ModuleName is the name of your device in MAX.PXIe-5830/5831/5832: /BasebandModule/ai/0/DoneEvent, where BasebandModule is the name of your device in MAX.All other devices: /DigitizerName/DoneEvent, where DigitizerName is the name of your associated digitizer module in MAX.This attribute is not supported on a MIMO session. Supported devices: PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetDoneEventTerminalName

Data Type:	float64
Access:	read only
Functions:	RFmxInstr_GetAttributeF64
Description:	Returns the current temperature of the module. This value is expressed in degrees Celsius. To use this attribute for PXIe-5830/5831/5832, you must first use the Selector string attribute to specify the name of the channel you are configuring. When you are reading the device temperature, you must specify the context in the Selector String input as 'module::(ModuleName)'. You can also use the RFmxInstr_BuildModuleString function to build the module string. For all other devices, the only valid value for the selector string is '' (empty string). On a MIMO session, use 'port::(deviceName)/(channelNumber)' as the selector string to read this attribute. You can use the RFmxInstr_BuildPortString2 function to build the selector string. For PXIe-5830/5831/5832, you must specify the context in the selector string input as port::(deviceName)/(channelNumber)/module::(moduleName). Refer to the following table to determine which strings are valid for your configuration. Hardware ModuleTRX Port TypeSelector StringPXIe-3621/3622/3623-if or '' (empty string)PXIe-5820-fpgaFirst connected mmRH-5582DIRECT TRX PORTS Onlyrf0SWITCHED TRX PORTS [0-7]rf0switch0SWITCHED TRX PORTS [8-15]rf0switch1Second connected mmRH-5582DIRECT TRX PORTS Onlyrf1SWITCHED TRX PORTS [0-7]rf1switch0SWITCHED TRX PORTS [8-15]rf1switch1 Supported devices: PXIe-5644/5645/5646, PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetDeviceTemperature

Data Type:	float64
Access:	read only
Functions:	RFmxInstr_GetAttributeF64
Description:	Returns the current temperature of the digitizer module. This value is expressed in degrees Celsius. On a MIMO session, use 'port::(deviceName)/(channelNumber)' as the Selector string to read this attribute. You can use the RFmxInstr_BuildPortString2 function to build the selector string.This attribute is not supported if you are using an external digitizer. Supported devices: PXIe-5644/5645/5646, PXIe-5663/5663E/5665/5668, PXIe-5820/5840/5841 Get Function: RFmxInstr_GetDigitizerTemperature

Data Type:	float64
Access:	read only
Functions:	RFmxInstr_GetAttributeF64
Description:	Returns the current temperature of the LO module associated with the device. This value is expressed in degrees Celsius. On a MIMO session, use 'port::(deviceName)/(channelNumber)' as the Selector string to read this attribute. You can use the RFmxInstr_BuildPortString2 function to build the selector string.This attribute is not supported if you are using an external LO. Supported devices: PXIe-5663/5663E/5665/5668, PXIe-5840/5841 Get Function: RFmxInstr_GetLOTemperature

Data Type:	char []
Access:	read only
Functions:	RFmxInstr_GetAttributeString
Description:	Returns the serial number of the RF downconverter module. For PXIe-5644/5645/5646 and PXIe-5820/5840/5841, this attribute returns the serial number of the VST module. For PXIe-5830/5831/5832, this attribute returns the serial number of PXIe-3621/3622/3623. On a MIMO session, use 'port::(deviceName)/(channelNumber)' as the Selector string to read this attribute. You can use the RFmxInstr_BuildPortString2 function to build the selector string. Supported devices: PXIe-5644/5645/5646, PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetSerialNumber

Data Type:	char []
Access:	read only
Functions:	RFmxInstr_GetAttributeString
Description:	Returns a string that contains the model number or name of the RF device that you are currently using. On a MIMO session, use 'port::(deviceName)/(channelNumber)' as the Selector string to read this attribute. You can use the RFmxInstr_BuildPortString2 function to build the selector string. Supported devices: PXIe-5644/5645/5646, PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetInstrumentModel

Data Type:	char []
Access:	read only
Functions:	RFmxInstr_GetAttributeString
Description:	Returns the revision of the RF downconverter module. On a MIMO session, use 'port::(deviceName)/(channelNumber)' as the Selector string to read this attribute. You can use the RFmxInstr_BuildPortString2 function to build the selector string. For PXIe-5644/5645/5646 and PXIe-5820/5830/5831/5832/5840/5841, this attribute returns the revision of the VST module. Supported devices: PXIe-5644/5645/5646, PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetModuleRevision

Data Type:	char []
Access:	read only
Functions:	RFmxInstr_GetAttributeString
Description:	Returns a string containing the firmware revision information of the RF downconverter for the composite device you are currently using. On a MIMO session, use 'port::(deviceName)/(channelNumber)' as the Selector string to read this attribute. You can use the RFmxInstr_BuildPortString2 function to build the selector string. Supported devices: PXIe-5663/5663E/5665/5668, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetInstrumentFirmwareRevision

Data Type:	int32
Access:	read only
Functions:	RFmxInstr_GetAttributeI32
Description:	Indicates whether a preselector is available on the RF downconverter module. On a MIMO session, use 'port::(deviceName)/(channelNumber)' as the Selector string to read this attribute. You can use the RFmxInstr_BuildPortString2 function to build the selector string. TRUE A preselector is available on the downconverter. FALSE No preselector is available on the downconverter. Supported devices: PXIe-5663/5663E/5665/5668, PXIe-5644/5645/5646, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetPreselectorPresent

Data Type:	int32
Access:	read only
Functions:	RFmxInstr_GetAttributeI32
Description:	Indicates whether an RF preamplifier is available on the RF downconverter module. On a MIMO session, use 'port::(deviceName)/(channelNumber)' as the Selector string to read this attribute. You can use the RFmxInstr_BuildPortString2 function to build the selector string. TRUE A preamplifier is available on the downconverter. FALSE No preamplifier is available on the downconverter. Supported devices: PXIe-5663/5663E/5665/5668, PXIe-5644/5645/5646, PXIe-5820/5830/5831/5832/5840/5841 Get Function: RFmxInstr_GetRFPreampPresent

Data Type:	int32
Access:	read/write
Functions:	RFmxInstr_SetAttributeI32 RFmxInstr_GetAttributeI32
Description:	Specifies the RFmx session with the respective LO sharing mode. The following figures illustrate different connection configuration topologies for different LO Sharing modes. You must set the RFMXINSTR_ATTR_NUMBER_OF_LO_SHARING_GROUPS attribute to 1 for the following LO connection configurations. You must set the RFMXINSTR_ATTR_NUMBER_OF_LO_SHARING_GROUPS attribute to 2 for the following LO connection configurations. The default value is RFMXINSTR_VAL_LO_SHARING_MODE_DISABLED. Get Function: RFmxInstr_GetLOSharingMode Set Function: RFmxInstr_SetLOSharingMode
Values:

RFMXINSTR_VAL_LO_SHARING_MODE_DISABLED (0)	LO Sharing is disabled.
RFMXINSTR_VAL_LO_SHARING_MODE_EXTERNAL_STAR (3)	The LO connection configuration is configured as External Star.
RFMXINSTR_VAL_LO_SHARING_MODE_EXTERNAL_DAISY_CHAIN (4)	The LO connection configuration is configured as External Daisy Chain.

Data Type:	int32
Access:	read/write
Functions:	RFmxInstr_SetAttributeI32 RFmxInstr_GetAttributeI32
Description:	Specifies the RFmx session with the number of LO sharing groups. The default value is 1. The valid values are 1 and 2. Get Function: RFmxInstr_GetNumberOfLOSharingGroups Set Function: RFmxInstr_SetNumberOfLOSharingGroups

Data Type:	int32
Access:	read only
Functions:	RFmxInstr_GetAttributeI32
Description:	Returns the recommended acquisition type for the last committed measurement configuration. This attribute is supported when 1. RFmxInstr Initialize function is called with option string 'AnalysisOnly=1'. 2. RFmxInstr Initialize function is called with option string 'AnalysisOnly=1;MaxNumWfms:n'. Use 'instr(n)' as the selector string to read this attribute. Get Function: RFmxInstr_GetRecommendedAcquisitionType
Values:

RFMXINSTR_VAL_RECOMMENDED_ACQUISITION_TYPE_IQ (0)	Indicates that the recommended acquisition type is I/Q. Use the Analyze (IQ) function to perform the measurement.
RFMXINSTR_VAL_RECOMMENDED_ACQUISITION_TYPE_SPECTRAL (1)	Indicates that the recommended acquisition type is Spectral. Use Analyze (Spectrum) function to perform the measurement.
RFMXINSTR_VAL_RECOMMENDED_ACQUISITION_TYPE_IQ_OR_SPECTRAL (2)	Indicates that the recommended acquisition type is I/Q or Spectral. Use either Analyze (IQ) or Analyze (Spectrum) function to perform the measurement.

Data Type:	float64
Access:	read only
Functions:	RFmxInstr_GetAttributeF64
Description:	Returns the recommended center frequency of the RF signal. This value is expressed in Hz. This attribute is supported when 1. RFmxInstr Initialize function is called with option string 'AnalysisOnly=1'. 2. RFmxInstr Initialize function is called with option string 'AnalysisOnly=1;MaxNumWfms:n'. Use 'instr(n)' as the selector string to read this attribute. Get Function: RFmxInstr_GetRecommendedCenterFrequency

Data Type:	int32
Access:	read only
Functions:	RFmxInstr_GetAttributeI32
Description:	Returns the recommended number of records to acquire to complete measurement averaging. This attribute is supported when 1. RFmxInstr Initialize function is called with option string 'AnalysisOnly=1'. 2. RFmxInstr Initialize function is called with option string 'AnalysisOnly=1;MaxNumWfms:n'. Use 'instr(n)' as the selector string to read this attribute. Get Function: RFmxInstr_GetRecommendedNumberOfRecords

Data Type:	float64
Access:	read only
Functions:	RFmxInstr_GetAttributeF64
Description:	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. This attribute is supported when 1. RFmxInstr Initialize function is called with option string 'AnalysisOnly=1'. 2. RFmxInstr Initialize function is called with option string 'AnalysisOnly=1;MaxNumWfms:n'. Use 'instr(n)' as the selector string to read this attribute. Get Function: RFmxInstr_GetRecommendedTriggerMinimumQuietTime

Data Type:	float64
Access:	read only
Functions:	RFmxInstr_GetAttributeF64
Description:	Returns the recommended acquisition time for I/Q acquisition. This value is expressed in seconds. This attribute is supported when 1. RFmxInstr Initialize function is called with option string 'AnalysisOnly=1'. 2. RFmxInstr Initialize function is called with option string 'AnalysisOnly=1;MaxNumWfms:n'. Use 'instr(n)' as the selector string to read this attribute. Get Function: RFmxInstr_GetRecommendedIQAcquisitionTime

Data Type:	float64
Access:	read only
Functions:	RFmxInstr_GetAttributeF64
Description:	Returns the recommended minimum sample rate for I/Q acquisition. This value is expressed in Hz. This attribute is supported when 1. RFmxInstr Initialize function is called with option string 'AnalysisOnly=1'. 2. RFmxInstr Initialize function is called with option string 'AnalysisOnly=1;MaxNumWfms:n'. Use 'instr(n)' as the selector string to read this attribute. Get Function: RFmxInstr_GetRecommendedIQMinimumSampleRate

Data Type:	float64
Access:	read only
Functions:	RFmxInstr_GetAttributeF64
Description:	Returns the recommended pretrigger time for I/Q acquisition. This value is expressed in seconds. This attribute is supported when 1. RFmxInstr Initialize function is called with option string 'AnalysisOnly=1'. 2. RFmxInstr Initialize function is called with option string 'AnalysisOnly=1;MaxNumWfms:n'. Use 'instr(n)' as the selector string to read this attribute. Get Function: RFmxInstr_GetRecommendedIQPreTriggerTime

Data Type:	float64
Access:	read only
Functions:	RFmxInstr_GetAttributeF64
Description:	Returns the recommended acquisition span for spectral acquisition. This value is expressed in Hz. This attribute is supported when 1. RFmxInstr Initialize function is called with option string 'AnalysisOnly=1'. 2. RFmxInstr Initialize function is called with option string 'AnalysisOnly=1;MaxNumWfms:n'. Use 'instr(n)' as the selector string to read this attribute. Get Function: RFmxInstr_GetRecommendedSpectralAcquisitionSpan

Data Type:	int32
Access:	read only
Functions:	RFmxInstr_GetAttributeI32
Description:	Returns the recommended FFT window type for spectral acquisition. This attribute is supported when 1. RFmxInstr Initialize function is called with option string 'AnalysisOnly=1'. 2. RFmxInstr Initialize function is called with option string 'AnalysisOnly=1;MaxNumWfms:n'. Use 'instr(n)' as the selector string to read this attribute. Get Function: RFmxInstr_GetRecommendedSpectralFFTWindow
Values:

RFMXINSTR_VAL_RECOMMENDED_SPECTRAL_FFT_WINDOW_NONE (0)	Indicates that the measurement does not use FFT windowing to reduce spectral leakage.
RFMXINSTR_VAL_RECOMMENDED_SPECTRAL_FFT_WINDOW_FLAT_TOP (1)	Indicates a Flat Top FFT window type.
RFMXINSTR_VAL_RECOMMENDED_SPECTRAL_FFT_WINDOW_HANNING (2)	Indicates a Hanning FFT window type.
RFMXINSTR_VAL_RECOMMENDED_SPECTRAL_FFT_WINDOW_HAMMING (3)	Indicates a Hamming FFT window type.
RFMXINSTR_VAL_RECOMMENDED_SPECTRAL_FFT_WINDOW_GAUSSIAN (4)	Indicates a Gaussian FFT window type.
RFMXINSTR_VAL_RECOMMENDED_SPECTRAL_FFT_WINDOW_BLACKMAN (5)	Indicates a Blackman FFT window type.
RFMXINSTR_VAL_RECOMMENDED_SPECTRAL_FFT_WINDOW_BLACKMAN_HARRIS (6)	Indicates a Blackman-Harris FFT window type.
RFMXINSTR_VAL_RECOMMENDED_SPECTRAL_FFT_WINDOW_KAISER_BESSEL (7)	Indicates a Kaiser-Bessel FFT window type.

Data Type:	float64
Access:	read only
Functions:	RFmxInstr_GetAttributeF64
Description:	Returns the recommended FFT bin width for spectral acquisition. This value is expressed in Hz. This attribute is supported when 1. RFmxInstr Initialize function is called with option string 'AnalysisOnly=1'. 2. RFmxInstr Initialize function is called with option string 'AnalysisOnly=1;MaxNumWfms:n'. Use 'instr(n)' as the selector string to read this attribute. Get Function: RFmxInstr_GetRecommendedSpectralResolutionBandwidth