RFmxBT_20dBBandwidthFetchMeasurement
- Updated2024-10-14
- 2 minute(s) read
RFmxBT_20dBBandwidthFetchMeasurement
int32 __stdcall RFmxBT_20dBBandwidthFetchMeasurement (niRFmxInstrHandle instrumentHandle, char selectorString[], float64 timeout, float64* peakPower, float64* bandwidth, float64* highFrequency, float64* lowFrequency);
Purpose
Fetches the 20dBBandwidth measurement results.
Parameters
| Input | ||
| Name | Type | Description |
| instrumentHandle | niRFmxInstrHandle | Specifies the instrument session. The RFmx driver obtains this parameter from the RFmxBT_Initialize function. |
| selectorString | char[] | 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. Example: "signal::sig1" "result::r1" "signal::sig1/result::r1" You can use the RFmxBT_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 |
| peakPower | float64* | Returns the peak power of the measured spectrum. This value is expressed in dBm.
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| bandwidth | float64* | Returns the 20dB bandwidth of the received signal. It is computed as the difference between highFrequency and lowFrequency parameters. This value is expressed in Hz.
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| highFrequency | float64* | 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.
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| lowFrequency | float64* | 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.
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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 RFmxBT_GetError function. The general meaning of the status code is as follows:
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