RFmxWCDMA_OBWFetchMeasurement
- Updated2024-10-14
- 2 minute(s) read
RFmxWCDMA_OBWFetchMeasurement
int32 __stdcall RFmxWCDMA_OBWFetchMeasurement (niRFmxInstrHandle instrumentHandle, char selectorString[], float64 timeout, float64* occupiedBandwidth, float64* absolutePower, float64* startFrequency, float64* stopFrequency);
Purpose
Fetches the absolute and relative powers of the carrier for the OBW measurement. The relative power is relative to the total carrier power.
Parameters
| Input | ||
| Name | Type | Description |
| instrumentHandle | niRFmxInstrHandle | Specifies the instrument session. The RFmx driver obtains this parameter from the RFmxWCDMA_Initialize function. |
| selectorString | char[] | Specifies a selector string comprising of the signal name and 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. Example: "signal::sig1" "result::r1" "signal::sig1/result::r1" You can use the RFmxWCDMA_BuildSignalString function to build the selector string. |
| timeout | float64 | Specifies the timeout, in seconds, for fetching the specified measurement. Set this value to an appropriate time, longer than expected for fetching the measurement. A value of -1 specifies that the function waits until the measurement is complete. |
| Output | ||
| Name | Type | Description |
| occupiedBandwidth | float64* | Returns the bandwidth containing 99% of the total integrated power of the acquired signal, around the center of the
carriers.
|
| absolutePower | float64* | Returns the carrier power integrated over a bandwidth of 5 MHz. This value is expressed in dBm.
|
| startFrequency | float64* | Returns the start frequency of the occupiedBandwidth parameter.
|
| stopFrequency | float64* | Returns the stop frequency of the occupiedBandwidth parameter.
|
Return Value
| Name | Type | Description | ||||||||
| status | int32 | Returns the status code of this operation. The status code either indicates success or describes an error or warning condition. Examine the status code from each call to an RFmx function to determine if an error has occurred. To obtain a text description of the status code and additional information about the error condition, call the RFmxWCDMA_GetError function. The general meaning of the status code is as follows:
|
||||||||