RFmxLTE ModAcc Fetch Subblock In-Band Emission Trace VI
- Updated2025-04-08
- 3 minute(s) read
Returns the in-band emission trace and the limit trace within the subblock aggregated bandwidth. The in-band emissions are a measure of the interference in the non-allocated resources blocks. The in-band emissions for various regions, such as general, carrier leakage, and I/Q image, are evaluated according to the method defined in the 3GPP 36.521 specification, and concatenated to form a composite trace. Limit trace is derived from the limits defined in section 6.5.2A.3 of the 3GPP TS 36.521 specification.
The VI result is valid only when you set the Link Direction property to Uplink and the Transmitter Architecture property to LO per Subblock.
Use "subblock<n>" as the selector string to read results from this VI.

Inputs/Outputs
![]() 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. ![]() 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. ![]() 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. ![]() Subblock In-Band Emission returns the array of the subblock in-band emission measurement trace. ![]() Subblock In-Band Emission Mask returns the array of the subblock in-band emission mask trace. ![]() Subblock In-Band Emission RB Indices returns the array of the resource block indices for the subblock in-band emission trace. It can have non integer values depending upon the spacing between carriers. ![]() error out contains error information. This output provides standard error out functionality. |