RFmxBT 20dBBandwidth 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 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 RFmxBT 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.

Peak Power returns the peak power of the measured spectrum. This value is expressed in dBm.

Bandwidth returns the 20dB bandwidth of the received signal. It is computed as the difference between High Frequency and Low Frequency parameters. This value is expressed in Hz.

High Frequency returns the highest frequency above the center frequency at which transmit power drops 20 dB below the peak power. This value is expressed in Hz.

Low Frequency returns the lowest frequency below the center frequency at which transmit power drops 20 dB below the peak power. This value is expressed in Hz.

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 RFmxBT 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 20dBBandwidth spectrum trace.

	x0 returns the start frequency. This value is expressed in Hz.
	dx returns the frequency bin spacing. This value is expressed in Hz.
	y returns the 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.