RFmxSpecAn_CCDFCfgRBWFilter
- Updated2025-10-13
- 2 minute(s) read
Configures the resolution bandwidth (RBW) filter to measure the power statistics of the signal as seen through this filter.
Syntax
int32 __stdcall RFmxSpecAn_CCDFCfgRBWFilter(niRFmxInstrHandle instrumentHandle, char selectorString[], float64 rbw, int32 rbwFilterType, float64 rrcAlpha)
Parameters
| Name | Direction | Type | Description | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| instrumentHandle | [in] | niRFmxInstrHandle | This parameter specifies the RFmx session refnum. Instrument Handle In is obtained from the RFmxInstr_Initialize function. | |||||||||||||||
| selectorString | [in] | char[] | This parameter specifies a Selector String comprising of the signal name. If you do not specify the signal name, the default signal instance is used. The default value is "" (empty string). Example: "" "signal::sig1" You can use the RFmxSpecAn_BuildSignalString function to build the selector string. | |||||||||||||||
| rbw | [in] | float64 | This parameter specifies the bandwidth, in Hz, of the resolution bandwidth (RBW) filter used to measure the signal. The default value is 100 kHz. | |||||||||||||||
| rbwFilterType | [in] | int32 | This parameter specifies the shape of the digital RBW filter. The default value is None.
| |||||||||||||||
| rrcAlpha | [in] | float64 | This parameter specifies the roll-off factor for the root-raised-cosine (RRC) filter. The default value is 0.1. |
Returns
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 RFmxSpecAn_GetError function.
The general meaning of the status code is as follows:
Value | Meaning |
|---|---|
0 | Success |
Positive Values | Warnings |
Negative Values | Errors |