RFmxWCDMA_CfgExternalAttenuation
- Updated2024-10-14
- 1 minute(s) read
RFmxWCDMA_CfgExternalAttenuation
int32 __stdcall RFmxWCDMA_CfgExternalAttenuation (niRFmxInstrHandle instrumentHandle, char selectorString[], float64 externalAttenuation);
Purpose
Configures the external attenuation.
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. If you do not specify the signal name, the default signal instance is used. Example: "signal::sig1" You can use the RFmxWCDMA_BuildSignalString function to build the selector string. |
| externalAttenuation | float64 | Specifies the attenuation of a switch or cable connected to the RF IN connector of the signal analyzer.
For more information about attenuation, refer to the RF Attenuation and Signal Levels topic for your device in the NI RF Vector Signal Analyzers Help. This value is expressed in dB. |
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:
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