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int32 __stdcall RFmxDemod_CfgRF (niRFmxInstrHandle instrumentHandle, char selectorString, float64 centerFrequency, float64 referenceLevel, float64 externalAttenuation);
Configures the RF properties of the signal specified by the selector string.
|instrumentHandle||niRFmxInstrHandle||Specifies the RFmx session. You can obtain this parameter from the RFmxDemod_Initialize function.|
|selectorString||char||Comprises the signal name. If you do not specify the signal name, the default signal instance is used.
You can use the RFmxDemod_BuildSignalString function to build the selector string.
|centerFrequency||float64||Specifies the carrier frequency, in Hz, of the RF signal that needs to be acquired. The signal analyzer tunes to this frequency.|
|referenceLevel||float64||Specifies the reference level, which represents the maximum expected power of the RF input signal. This value is expressed in dBm for RF devices and Vpk-pk for baseband devices.|
|externalAttenuation||float64||Specifies the attenuation, in dB, of a switch (or cable) connected to the RF IN connector of the signal analyzer. For more information about attenuation, refer to the Attenuation and Signal Levels topic for your device in the NI RF Vector Signal Analyzers Help.|
|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 RFmxDemod_GetError function.
The general meaning of the status code is as follows: