RFmxWLAN_OFDMModAccFetchPreamblePeakPowers802_11ac
- Updated2024-10-14
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RFmxWLAN_OFDMModAccFetchPreamblePeakPowers802_11ac
int32 __stdcall RFmxWLAN_OFDMModAccFetchPreamblePeakPowers802_11ac (niRFmxInstrHandle instrumentHandle, char selectorString[], float64 timeout, float64* VHTSIGAPeakPowerMaximum, float64* VHTSTFPeakPowerMaximum, float64* VHTLTFPeakPowerMaximum, float64* VHTSIGBPeakPowerMaximum);
Purpose
Fetches the peak power of the 802.11ac specific preamble fields.
Use "segment<n>/chain<k>" as the selector string to read results from this function.
Parameters
| Input | ||
| Name | Type | Description |
| instrumentHandle | niRFmxInstrHandle | Specifies the instrument session. The RFmx driver obtains this parameter from the RFmxWLAN_Initialize function. |
| selectorString | char[] | Specifies a selector string comprising of the signal name, result name, segment number, and chain 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. Example: "segment0/chain0" "signal::sig1/segment0/chain0" "signal::sig1/result::r1/segment0/chain0" "result::r1/segment0/chain0" You can use the RFmxWLAN_BuildChainString 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 |
| VHTSIGAPeakPowerMaximum | float64* | Returns the peak power of the VHT-SIG-A field. When you set the
RFMXWLAN_ATTR_OFDMMODACC_AVERAGING_ENABLED attribute to RFMXWLAN_VAL_OFDMMODACC_AVERAGING_ENABLED_TRUE, this attribute returns the maximum of the VHT-SIG-A field peak power results computed for each averaging count. This value is expressed in dBm.
|
| VHTSTFPeakPowerMaximum | float64* | Returns the peak power of the VHT-STF field. When you set the RFMXWLAN_ATTR_OFDMMODACC_AVERAGING_ENABLED attribute to RFMXWLAN_VAL_OFDMMODACC_AVERAGING_ENABLED_TRUE, this parameter returns the maximum of the VHT-STF peak power results computed for each averaging count. This value is expressed in dBm.
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| VHTLTFPeakPowerMaximum | float64* | Returns the peak power of the VHT-LTF field. When you set the RFMXWLAN_ATTR_OFDMMODACC_AVERAGING_ENABLED attribute to RFMXWLAN_VAL_OFDMMODACC_AVERAGING_ENABLED_TRUE, this parameter returns the maximum of the VHT-LTF peak power results computed for each averaging count. This value is expressed in dBm.
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| VHTSIGBPeakPowerMaximum | float64* | Returns the peak power of the VHT-SIG-B field. When you set the RFMXWLAN_ATTR_OFDMMODACC_AVERAGING_ENABLED attribute to RFMXWLAN_VAL_OFDMMODACC_AVERAGING_ENABLED_TRUE, this parameter returns the maximum of the VHT-SIG-B field peak power results computed for each averaging count. This value is expressed in dBm.
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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 RFmxWLAN_GetError function. The general meaning of the status code is as follows:
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