RFmxLTE OBW Fetch (VI)

Instrument Handle In specifies the RFmx session refnum. Instrument Handle In is obtained from the RFmxInstr Initialize NIRFSA VI.

Timeout specifies the timeout for fetching the specified measurement. This value is expressed in seconds. Set this value to an appropriate time, longer than expected for fetching the measurement. A value of -1 specifies that the VI waits until the measurement is complete. The default value is 10.

Selector String specifies a selector string comprising of the signal name, result name, and subblock number. If you do not specify the signal name, the default signal instance is used. If you do not specify the result name, the default result instance is used. The default value is "subblock0".

Example:

"subblock0"

"signal::sig1/subblock0"

"result::r1/subblock0"

"signal::sig1/result::r1/subblock0"

You can use the RFmxLTE Build Subblock String VI to build the selector string.

error in describes error conditions that occur before this node runs. This input provides standard error in functionality.

Instrument Handle Out passes a reference to your RFmx session to the next VI.

Occupied Bandwidth returns the bandwidth that occupies 99 percentage of the total power of the signal within a carrier/subblock.

Absolute Power returns the power measured over the integration bandwidth of the carrier. The carrier power is reported in dBm when you set the ACP Pwr Units property to dBm, and in dBm/Hz when you set the ACP Pwr Units property to dBm/Hz.

Stop Frequency returns the stop frequency of the subblock. The occupied bandwidth of a carrier/subblock is calculated using the following equation:

Stop frequency - Start frequency = Occupied bandwidth.

Start Frequency returns the start frequency of the subblock. The occupied bandwidth of a carrier/subblock is calculated using the following equation:

Stop frequency - Start frequency = Occupied bandwidth.

error out contains error information. This output provides standard error out functionality.

Instrument Handle In specifies the RFmx session refnum. Instrument Handle In is obtained from the RFmxInstr Initialize NIRFSA VI.

Timeout specifies the timeout for fetching the specified measurement. This value is expressed in seconds. Set this value to an appropriate time, longer than expected for fetching the measurement. A value of -1 specifies that the VI waits until the measurement is complete. The default value is 10.

Selector String specifies a selector string comprising of the signal name and the result name. If you do not specify the signal name, the default signal instance is used. If you do not specify the result name, the default result instance is used. The default value is "" (empty string).

Example:

"signal::sig1"

"result::r1"

"signal::sig1/result::r1"

You can use the RFmxLTE Build Signal String VI to build the selector string.

error in describes error conditions that occur before this node runs. This input provides standard error in functionality.

Instrument Handle Out passes a reference to your RFmx session to the next VI.

Spectrum returns the spectrum.

	x0 returns the start frequency of the channel. This value is expressed in Hz.
	dx returns the frequency bin spacing. This value is expressed in Hz.
	y returns the array of averaged power measured at each frequency bin. This value is expressed in dBm.

error out contains error information. This output provides standard error out functionality.